Change d4r license to GPL-3.0-only

- Set Disable.Watermark on the game path (the Linux shim already does);
  [DLSS] ShowWatermark = true keeps NVIDIA's stamp.

- Always write d4r\d4r_nvngx.log in player mode. It was skipped when the
  launcher gave the game a valid stderr pipe, e.g. Steam.

- Accept NVIDIA's 310.7.0 + _nvngx 32.0.15.9636 as "less tested" pins.
  Native kernels are still gated by PTX identity, so a different DLL
  falls back to translated kernels.

- Add d4r-check.ps1 (ok/MISSING/note lines with a fix for each; -Report
  writes a bug-report ZIP) with 15 fixture tests.

- package-windows-release.ps1: -Architectures subset, ships the check
  script, GPU registry and one GPU-query tool.

- Add a shorter WINDOWS_README.txt; trim README's Windows section and
  merge in the RX 9060 XT / distributor-DLL notes.

- Diagnostic probe accepts preset 12 (L).

Tested on RX 7700 XT without a game: loader and shim start-up, K and M
synthetic NGX frames with both DLL pairs (finite output, native kernels
used). Not tested in a game.

.gitattributes

@@ -0,0 +1,3 @@
+# Patches are applied with `git apply`, which fails on CRLF. Keep them LF even
+# where core.autocrlf=true (Windows checkouts).
+*.patch text eol=lf

.gitignore

@@ -15,6 +15,9 @@
 /traces/
 /build/
 /dist/
+/.tools/
+/external/
+/test-results/
 *.trace
 *.dump
 *.log

CMakeLists.txt

@@ -0,0 +1,324 @@
+cmake_minimum_required(VERSION 3.24)
+project(d4r_windows_diagnostics LANGUAGES C CXX)
+if(NOT WIN32 OR NOT CMAKE_SIZEOF_VOID_P EQUAL 8)
+  message(FATAL_ERROR "These diagnostics require native Windows x64")
+endif()
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(D4R_HIP_ROOT "$ENV{HIP_PATH}" CACHE PATH "One stable HIP SDK or TheRock installation")
+if(NOT D4R_HIP_ROOT AND EXISTS "C:/Program Files/AMD/ROCm/7.2")
+  set(D4R_HIP_ROOT "C:/Program Files/AMD/ROCm/7.2")
+endif()
+if(NOT EXISTS "${D4R_HIP_ROOT}/include/hip/hip_runtime_api.h")
+  message(FATAL_ERROR "Set D4R_HIP_ROOT to a Windows HIP SDK (headers and bin/clang++.exe required)")
+endif()
+find_program(D4R_HIP_CLANG NAMES clang++.exe PATHS "${D4R_HIP_ROOT}/bin" "${D4R_HIP_ROOT}/lib/llvm/bin" NO_DEFAULT_PATH REQUIRED)
+# Architecture parameterization adapted from realdody/d4r ae530b0.
+# Keep explicit subtargets: no gfx11 substitution or untested future gfx12 ISA.
+file(READ "${CMAKE_CURRENT_SOURCE_DIR}/tools/windows/gpu-targets.json" d4r_target_json)
+set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS tools/windows/gpu-targets.json)
+string(JSON d4r_target_count LENGTH "${d4r_target_json}" targets)
+math(EXPR d4r_target_last "${d4r_target_count} - 1")
+set(d4r_supported_targets)
+set(d4r_target_cpp_entries "")
+foreach(index RANGE ${d4r_target_last})
+  foreach(field architecture elfMachine isaMajor family)
+    string(JSON target_${field} GET "${d4r_target_json}" targets ${index} ${field})
+  endforeach()
+  list(APPEND d4r_supported_targets "${target_architecture}")
+  string(APPEND d4r_target_cpp_entries "  GpuTarget{\"${target_architecture}\", ${target_elfMachine}, ${target_isaMajor}, \"${target_family}\"},\n")
+endforeach()
+configure_file(tools/windows/gpu_targets.generated.h.in gpu_targets.generated.h @ONLY)
+include_directories("${CMAKE_CURRENT_BINARY_DIR}")
+set(D4R_GPU_ARCH "gfx1201" CACHE STRING "Native Windows package GPU target")
+set_property(CACHE D4R_GPU_ARCH PROPERTY STRINGS ${d4r_supported_targets})
+if(NOT D4R_GPU_ARCH IN_LIST d4r_supported_targets)
+  message(FATAL_ERROR "D4R_GPU_ARCH must be one of: ${d4r_supported_targets}")
+endif()
+add_compile_definitions(D4R_TARGET_ARCH="${D4R_GPU_ARCH}")
+configure_file(tools/windows/gpu-target.json.in gpu-target.json @ONLY)
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/gpu-target.json" DESTINATION .)
+install(FILES tools/windows/gpu-targets.json DESTINATION .)
+set(d4r_device_flags)
+if(D4R_GPU_ARCH MATCHES "^gfx11")
+  # Windows-only workaround informed by realdody/d4r 1897b4a. Keep the real
+  # gfx11 layout; do not route RDNA3 through gfx12 fragments.
+  list(APPEND d4r_device_flags -DD4R_WINDOWS_GFX11_LANE_EXCHANGE)
+endif()
+set(probe_object "${CMAKE_CURRENT_BINARY_DIR}/probe_${D4R_GPU_ARCH}.hsaco")
+add_custom_command(OUTPUT "${probe_object}"
+  COMMAND "${D4R_HIP_CLANG}" -x hip --offload-arch=${D4R_GPU_ARCH}
+    --offload-device-only --no-gpu-bundle-output -mno-wavefrontsize64
+    -nogpuinc -nogpulib -O2 "${CMAKE_CURRENT_SOURCE_DIR}/tools/windows/probe_kernel.hip"
+    -o "${probe_object}"
+  DEPENDS tools/windows/probe_kernel.hip VERBATIM)
+add_custom_target(d4r_probe_code_object ALL DEPENDS "${probe_object}")
+set(pixel_object "${CMAKE_CURRENT_BINARY_DIR}/pixel_convert_${D4R_GPU_ARCH}.hsaco")
+add_custom_command(OUTPUT "${pixel_object}"
+  COMMAND "${D4R_HIP_CLANG}" -x hip -std=c++17 --offload-arch=${D4R_GPU_ARCH}
+    --offload-device-only --no-gpu-bundle-output -mno-wavefrontsize64
+    -nogpuinc -nogpulib -O2 "${CMAKE_CURRENT_SOURCE_DIR}/tools/windows/pixel_convert_gfx1201.hip"
+    -o "${pixel_object}"
+  DEPENDS tools/windows/pixel_convert_gfx1201.hip tools/windows/pixel_format.h kernels/common/hip_device_minimal.h VERBATIM)
+add_custom_target(d4r_pixel_code_object ALL DEPENDS "${pixel_object}")
+set(wmma_object "${CMAKE_CURRENT_BINARY_DIR}/wmma_${D4R_GPU_ARCH}.hsaco")
+add_custom_command(OUTPUT "${wmma_object}"
+  COMMAND "${D4R_HIP_CLANG}" -x hip --offload-arch=${D4R_GPU_ARCH}
+    --offload-device-only --no-gpu-bundle-output -mno-wavefrontsize64
+    -nogpuinc -nogpulib -O2 ${d4r_device_flags} "${CMAKE_CURRENT_SOURCE_DIR}/tools/windows/wmma_gfx1201.hip"
+    -o "${wmma_object}"
+  DEPENDS tools/windows/wmma_gfx1201.hip kernels/common/wmma_backend.h
+    kernels/common/wmma_layout.h kernels/common/wave32_exchange.h VERBATIM)
+add_custom_target(d4r_wmma_code_object ALL DEPENDS "${wmma_object}")
+# K/M objects stay in experimental/, outside the ZLUDA native override
+# directory, until each layer and then the complete network pass replay.
+# M uses the existing FP16 widening baseline; native FP8 is not enabled here.
+set(native_objects)
+option(D4R_K_FP16_BASELINE "Round every K16 accumulation step like NVIDIA f16 WMMA" ON)
+option(D4R_M_FP16_BASELINE "Preserve M e4m3 quantisation and f16 accumulation per K32" ON)
+foreach(family k m)
+  file(GLOB native_sources CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/kernels/${family}/*.hip")
+  file(GLOB native_headers CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/kernels/${family}/*.h")
+  foreach(source IN LISTS native_sources)
+    get_filename_component(kernel_name "${source}" NAME_WE)
+    set(native_object "${CMAKE_CURRENT_BINARY_DIR}/${kernel_name}_${D4R_GPU_ARCH}.hsaco")
+    set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${source}")
+    file(READ "${source}" kernel_source)
+    string(REGEX MATCH "// d4r-build-flags: ([^\r\n]+)" flags_line "${kernel_source}")
+    set(native_flags)
+    if(family STREQUAL "k" AND D4R_K_FP16_BASELINE)
+      list(APPEND native_flags -DD4R_K_FP16_BASELINE)
+    endif()
+    if(family STREQUAL "m" AND D4R_M_FP16_BASELINE)
+      list(APPEND native_flags -DSWIN_EXACT -DSWIN_EXACT_PV)
+    endif()
+    if(flags_line)
+      separate_arguments(source_flags NATIVE_COMMAND "${CMAKE_MATCH_1}")
+      list(APPEND native_flags ${source_flags})
+    endif()
+    add_custom_command(OUTPUT "${native_object}"
+      COMMAND "${D4R_HIP_CLANG}" -x hip -std=c++17 --offload-arch=${D4R_GPU_ARCH}
+        --offload-device-only --no-gpu-bundle-output -mno-wavefrontsize64
+        -nogpuinc -nogpulib -O3 -DD4R_DEVICE_ONLY_MINIMAL ${d4r_device_flags} ${native_flags}
+        "${source}" -o "${native_object}"
+      DEPENDS "${source}" ${native_headers} kernels/common/wmma_layout.h kernels/common/wave32_exchange.h
+        kernels/common/hip_device_minimal.h VERBATIM)
+    list(APPEND native_objects "${native_object}")
+    install(FILES "${native_object}" DESTINATION "experimental/${family}")
+  endforeach()
+endforeach()
+add_custom_target(d4r_native_compile ALL DEPENDS ${native_objects})
+# Retain the old manual build target for existing scripts.
+add_custom_target(d4r_native_gfx1201_compile DEPENDS d4r_native_compile)
+foreach(probe gpu_inventory hip_gfx1201_probe gfx12_wmma_probe k_module_probe native_replay_probe cuda_driver_probe cuda_mma_probe cuda_image_probe d3d12_command_probe d3d12_pixel_probe d3d12_hip_interop_probe hip_stream_lifecycle_probe ngx_cuda_init_probe d3d12_dlss_probe)
+  add_executable(d4r_${probe} tools/windows/${probe}.cpp)
+  target_compile_definitions(d4r_${probe} PRIVATE WIN32_LEAN_AND_MEAN NOMINMAX __HIP_PLATFORM_AMD__)
+  target_include_directories(d4r_${probe} PRIVATE "${D4R_HIP_ROOT}/include")
+  target_link_libraries(d4r_${probe} PRIVATE version dbghelp)
+  if(MINGW)
+    target_link_options(d4r_${probe} PRIVATE -static)
+  endif()
+  if(MSVC)
+    target_compile_options(d4r_${probe} PRIVATE /W4 /EHsc)
+    set_property(TARGET d4r_${probe} PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+  else()
+    target_compile_options(d4r_${probe} PRIVATE -Wall -Wextra)
+  endif()
+  install(TARGETS d4r_${probe} RUNTIME DESTINATION bin)
+endforeach()
+foreach(probe binary16_probe gpu_target_probe)
+  add_executable(d4r_${probe} tools/windows/${probe}.cpp)
+  if(MINGW)
+    target_link_options(d4r_${probe} PRIVATE -static)
+  elseif(MSVC)
+    set_property(TARGET d4r_${probe} PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+  endif()
+  install(TARGETS d4r_${probe} RUNTIME DESTINATION bin)
+endforeach()
+add_dependencies(d4r_gpu_target_probe d4r_probe_code_object d4r_pixel_code_object)
+set(D4R_MINHOOK_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/external/MinHook" CACHE PATH "MinHook 1.3.4 source checkout")
+if(NOT EXISTS "${D4R_MINHOOK_ROOT}/include/MinHook.h")
+  message(FATAL_ERROR "Clone MinHook v1.3.4 into external/MinHook or set D4R_MINHOOK_ROOT")
+endif()
+add_subdirectory("${D4R_MINHOOK_ROOT}" "${CMAKE_CURRENT_BINARY_DIR}/minhook" EXCLUDE_FROM_ALL)
+add_library(d4r_nvngx_windows SHARED tools/windows/d4r_nvngx_windows.cpp tools/windows/d3d12_command_hooks.cpp)
+add_dependencies(d4r_nvngx_windows d4r_pixel_code_object)
+set_target_properties(d4r_nvngx_windows PROPERTIES PREFIX "" OUTPUT_NAME "d4r_nvngx")
+target_compile_definitions(d4r_nvngx_windows PRIVATE WIN32_LEAN_AND_MEAN NOMINMAX __HIP_PLATFORM_AMD__)
+target_include_directories(d4r_nvngx_windows PRIVATE "${D4R_HIP_ROOT}/include")
+target_link_libraries(d4r_nvngx_windows PRIVATE version dbghelp d3d12 dxguid minhook bcrypt)
+install(FILES "${D4R_MINHOOK_ROOT}/LICENSE.txt" DESTINATION licenses RENAME MinHook.txt)
+if(MINGW)
+  target_link_options(d4r_nvngx_windows PRIVATE -static)
+endif()
+install(TARGETS d4r_nvngx_windows RUNTIME DESTINATION bin)
+# Target-independent _nvngx.dll of drag-in releases: loads _nvngx_<arch>.dll
+# for the game's actual HIP architecture. Its own D4R_TARGET_ARCH is unused.
+add_library(d4r_nvngx_loader SHARED tools/windows/d4r_nvngx_loader.cpp)
+set_target_properties(d4r_nvngx_loader PROPERTIES PREFIX "" OUTPUT_NAME "d4r_nvngx_loader")
+target_compile_definitions(d4r_nvngx_loader PRIVATE WIN32_LEAN_AND_MEAN NOMINMAX __HIP_PLATFORM_AMD__)
+target_include_directories(d4r_nvngx_loader PRIVATE "${D4R_HIP_ROOT}/include")
+target_link_libraries(d4r_nvngx_loader PRIVATE version dbghelp)
+if(MINGW)
+  target_link_options(d4r_nvngx_loader PRIVATE -static)
+endif()
+install(TARGETS d4r_nvngx_loader RUNTIME DESTINATION bin)
+if(MSVC)
+  target_sources(d4r_ngx_cuda_init_probe PRIVATE tools/d4r_ngx_param_msvc.cpp tools/d4r_ngx_param_host.cpp)
+  target_sources(d4r_d3d12_dlss_probe PRIVATE tools/d4r_ngx_param_msvc.cpp tools/d4r_ngx_param_host.cpp)
+  target_sources(d4r_nvngx_windows PRIVATE tools/d4r_ngx_param_msvc.cpp tools/d4r_ngx_param_host.cpp)
+else()
+  find_program(D4R_CLANG_CL NAMES clang-cl.exe PATHS "${D4R_HIP_ROOT}/bin" "${D4R_HIP_ROOT}/lib/llvm/bin" NO_DEFAULT_PATH REQUIRED)
+  set(ngx_parameter_object "${CMAKE_CURRENT_BINARY_DIR}/ngx_parameter_msvc.obj")
+  add_custom_command(OUTPUT "${ngx_parameter_object}"
+    COMMAND "${D4R_CLANG_CL}" /c /O2 /Zl /GS- /GR- /EHs-c-
+      "${CMAKE_CURRENT_SOURCE_DIR}/tools/d4r_ngx_param_msvc.cpp" "/Fo${ngx_parameter_object}"
+    DEPENDS tools/d4r_ngx_param_msvc.cpp VERBATIM)
+  set_source_files_properties("${ngx_parameter_object}" PROPERTIES GENERATED TRUE EXTERNAL_OBJECT TRUE)
+  target_sources(d4r_ngx_cuda_init_probe PRIVATE "${ngx_parameter_object}" tools/d4r_ngx_param_host.cpp)
+  target_sources(d4r_d3d12_dlss_probe PRIVATE "${ngx_parameter_object}" tools/d4r_ngx_param_host.cpp)
+  target_sources(d4r_nvngx_windows PRIVATE "${ngx_parameter_object}" tools/d4r_ngx_param_host.cpp)
+endif()
+add_library(d4r_nvapi_trace SHARED tools/windows/nvapi_trace.cpp)
+set_target_properties(d4r_nvapi_trace PROPERTIES PREFIX "" OUTPUT_NAME "nvapi64"
+  ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/nvapi-trace"
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/nvapi-trace")
+target_compile_definitions(d4r_nvapi_trace PRIVATE WIN32_LEAN_AND_MEAN NOMINMAX)
+target_link_libraries(d4r_nvapi_trace PRIVATE version dbghelp)
+if(MINGW)
+  target_link_options(d4r_nvapi_trace PRIVATE -static)
+endif()
+install(TARGETS d4r_nvapi_trace RUNTIME DESTINATION nvapi-trace)
+add_library(d4r_nvapi_compat SHARED tools/windows/nvapi_trace.cpp)
+set_target_properties(d4r_nvapi_compat PROPERTIES PREFIX "" OUTPUT_NAME "nvapi64"
+  ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/nvapi-compat"
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/nvapi-compat")
+target_compile_definitions(d4r_nvapi_compat PRIVATE WIN32_LEAN_AND_MEAN NOMINMAX __HIP_PLATFORM_AMD__ D4R_NVAPI_COMPAT)
+target_include_directories(d4r_nvapi_compat PRIVATE "${D4R_HIP_ROOT}/include")
+target_link_libraries(d4r_nvapi_compat PRIVATE version dbghelp)
+if(MINGW)
+  target_link_options(d4r_nvapi_compat PRIVATE -static)
+endif()
+install(TARGETS d4r_nvapi_compat RUNTIME DESTINATION nvapi-compat)
+target_link_libraries(d4r_d3d12_hip_interop_probe PRIVATE d3d12 dxgi dxguid)
+target_link_libraries(d4r_d3d12_dlss_probe PRIVATE d3d12 dxgi dxguid d3dcompiler)
+add_executable(d4r_debug_launcher tools/windows/debug_launcher.cpp)
+target_include_directories(d4r_debug_launcher PRIVATE tools/windows)
+target_link_libraries(d4r_debug_launcher PRIVATE version dbghelp)
+install(TARGETS d4r_debug_launcher RUNTIME DESTINATION bin)
+target_link_libraries(d4r_d3d12_command_probe PRIVATE d3d12 dxgi dxguid)
+target_link_libraries(d4r_d3d12_pixel_probe PRIVATE d3d12 dxgi dxguid)
+add_dependencies(d4r_d3d12_pixel_probe d4r_pixel_code_object)
+add_dependencies(d4r_d3d12_command_probe d4r_nvngx_windows)
+set(D4R_AGILITY_ROOT "" CACHE PATH "Optional unpacked Microsoft.Direct3D.D3D12 1.619.5 debug SDK")
+if(EXISTS "${D4R_AGILITY_ROOT}/build/native/bin/x64/d3d12SDKLayers.dll")
+  add_executable(d4r_d3d12_command_debug_probe EXCLUDE_FROM_ALL tools/windows/d3d12_command_probe.cpp)
+  target_compile_definitions(d4r_d3d12_command_debug_probe PRIVATE WIN32_LEAN_AND_MEAN NOMINMAX __HIP_PLATFORM_AMD__ D4R_DIAGNOSTIC_AGILITY)
+  target_include_directories(d4r_d3d12_command_debug_probe PRIVATE "${D4R_HIP_ROOT}/include")
+  target_link_libraries(d4r_d3d12_command_debug_probe PRIVATE version dbghelp d3d12 dxgi dxguid)
+  if(MINGW)
+    target_link_options(d4r_d3d12_command_debug_probe PRIVATE -static)
+  endif()
+  foreach(dll D3D12Core.dll d3d12SDKLayers.dll)
+    configure_file("${D4R_AGILITY_ROOT}/build/native/bin/x64/${dll}" "${CMAKE_CURRENT_BINARY_DIR}/debug-d3d12/${dll}" COPYONLY)
+  endforeach()
+  configure_file("${D4R_AGILITY_ROOT}/LICENSE.txt" "${CMAKE_CURRENT_BINARY_DIR}/debug-d3d12/LICENSE.txt" COPYONLY)
+endif()
+add_dependencies(d4r_hip_gfx1201_probe d4r_probe_code_object)
+add_dependencies(d4r_gfx12_wmma_probe d4r_wmma_code_object)
+add_dependencies(d4r_k_module_probe d4r_native_compile)
+install(FILES "${probe_object}" DESTINATION bin)
+install(FILES "${pixel_object}" DESTINATION bin)
+install(FILES "${wmma_object}" DESTINATION bin)
+install(FILES scripts/windows/test-windows-rdna4.ps1 DESTINATION .)
+install(FILES scripts/windows/gpu-target.ps1 DESTINATION .)
+install(FILES scripts/windows/gpu-preflight.ps1 DESTINATION .)
+install(FILES scripts/windows/test-gpu-target-contract.ps1 DESTINATION .)
+install(FILES scripts/windows/test-k-replay.ps1 DESTINATION .)
+install(FILES scripts/windows/test-k-captures.ps1 DESTINATION .)
+install(FILES scripts/windows/test-native-overrides.ps1 DESTINATION .)
+install(FILES tools/windows/k_layer_validate.py DESTINATION .)
+install(FILES tools/windows/k_replay_validate.py DESTINATION .)
+install(FILES tools/windows/k_ptx_validate.py DESTINATION .)
+install(FILES tools/windows/frame_compare.py DESTINATION .)
+install(FILES tools/windows/m_replay_validate.py DESTINATION .)
+install(FILES tools/windows/m_ptx_validate.py DESTINATION .)
+install(FILES tools/windows/m_temporal_validate.py tools/windows/m_capture_compare.py DESTINATION .)
+install(FILES scripts/windows/test-m-replay.ps1 DESTINATION .)
+install(FILES scripts/windows/test-m-captures.ps1 DESTINATION .)
+install(FILES kernels/tools/pwin_model.py kernels/tools/pwin_check.py kernels/tools/ptxsim.py
+  kernels/tools/extract_dlss_ptx.py kernels/tools/kernel_manifest.py DESTINATION reference)
+install(FILES kernels/tools/model_enc3.py kernels/tools/swin_model.py kernels/tools/swin_check.py DESTINATION reference)
+install(FILES docs/windows-rdna4-port.md DESTINATION docs)
+install(FILES docs/windows-gpu-support.md DESTINATION docs)
+include(CTest)
+add_test(NAME binary16_rounding COMMAND d4r_binary16_probe)
+set_tests_properties(binary16_rounding PROPERTIES TIMEOUT 30 LABELS "software;numerics")
+add_test(NAME gpu_target_contract COMMAND d4r_gpu_target_probe "${probe_object}" "${pixel_object}")
+set_tests_properties(gpu_target_contract PROPERTIES TIMEOUT 30 LABELS "software;architecture")
+find_program(D4R_POWERSHELL NAMES pwsh.exe powershell.exe REQUIRED)
+add_test(NAME gpu_target_script_contract COMMAND "${D4R_POWERSHELL}" -NoProfile -File
+  "${CMAKE_CURRENT_SOURCE_DIR}/scripts/windows/test-gpu-target-contract.ps1"
+  -PackageRoot "${CMAKE_CURRENT_BINARY_DIR}" -CodeObject "${probe_object}")
+set_tests_properties(gpu_target_script_contract PROPERTIES TIMEOUT 30 LABELS "software;architecture")
+add_test(NAME d3d12_gpu_pixel_formats COMMAND d4r_d3d12_pixel_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "${pixel_object}" --iterations 2)
+set_tests_properties(d3d12_gpu_pixel_formats PROPERTIES TIMEOUT 120 LABELS "hardware;${D4R_GPU_ARCH};formats")
+add_test(NAME d3d12_gpu_enhanced_formats COMMAND d4r_d3d12_pixel_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "${pixel_object}" --interop-mode enhanced --iterations 2)
+set_tests_properties(d3d12_gpu_enhanced_formats PROPERTIES TIMEOUT 120 LABELS "hardware;${D4R_GPU_ARCH};formats;enhanced_barriers")
+add_test(NAME d3d12_command_backend COMMAND d4r_d3d12_command_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "$<TARGET_FILE:d4r_nvngx_windows>" --interop-mode indirect --iterations 32)
+set_tests_properties(d3d12_command_backend PROPERTIES TIMEOUT 120 LABELS "hardware;d3d12;command_lists;lifetime")
+add_test(NAME d3d12_command_initial_pso COMMAND d4r_d3d12_command_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "$<TARGET_FILE:d4r_nvngx_windows>" --interop-mode initial-pso --iterations 32)
+set_tests_properties(d3d12_command_initial_pso PROPERTIES TIMEOUT 120 LABELS "hardware;d3d12;command_lists;lifetime")
+add_test(NAME d3d12_command_root_reset_warp COMMAND d4r_d3d12_command_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "$<TARGET_FILE:d4r_nvngx_windows>" --interop-mode indirect-root-reset --iterations 32)
+set_tests_properties(d3d12_command_root_reset_warp PROPERTIES TIMEOUT 120 LABELS "software;d3d12;command_lists;lifetime"
+  ENVIRONMENT "D4R_COMMAND_PROBE_WARP=1;D4R_COMMAND_PROBE_NO_HIP=1")
+add_test(NAME hip_gfx1201 COMMAND d4r_hip_gfx1201_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "${probe_object}")
+set_tests_properties(hip_gfx1201 PROPERTIES TIMEOUT 90 LABELS "hardware;${D4R_GPU_ARCH}")
+add_test(NAME gfx12_wmma COMMAND d4r_gfx12_wmma_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "${wmma_object}" --iterations 16)
+set_tests_properties(gfx12_wmma PROPERTIES TIMEOUT 90 LABELS "hardware;${D4R_GPU_ARCH};wmma")
+foreach(layer enc1 enc2)
+  add_test(NAME k_${layer}_execution COMMAND d4r_k_module_probe
+    --hip-root "${D4R_HIP_ROOT}"
+    --module "${CMAKE_CURRENT_BINARY_DIR}/dltss_pwin_${layer}_layer_${D4R_GPU_ARCH}.hsaco"
+    --kernel-name ${layer})
+  set_tests_properties(k_${layer}_execution PROPERTIES TIMEOUT 90 LABELS "hardware;${D4R_GPU_ARCH};k_execution")
+endforeach()
+add_test(NAME d3d12_hip_interop COMMAND d4r_d3d12_hip_interop_probe
+  --hip-root "${D4R_HIP_ROOT}" --module "${probe_object}" --iterations 32)
+set_tests_properties(d3d12_hip_interop PROPERTIES TIMEOUT 120 LABELS "hardware;interop")
+add_test(NAME d3d12_hip_map_lifetime COMMAND d4r_d3d12_hip_interop_probe
+  --hip-root "${D4R_HIP_ROOT}" --interop-mode map --iterations 64)
+set_tests_properties(d3d12_hip_map_lifetime PROPERTIES TIMEOUT 120 LABELS "hardware;interop;lifetime")
+set(D4R_ZLUDA_ROOT "" CACHE PATH "Local Windows ZLUDA directory (nvcuda.dll)")
+if(EXISTS "${D4R_ZLUDA_ROOT}/nvcuda.dll")
+  foreach(context primary created)
+    add_test(NAME cuda_${context} COMMAND d4r_cuda_driver_probe
+      --hip-root "${D4R_HIP_ROOT}" --cuda-dll "${D4R_ZLUDA_ROOT}/nvcuda.dll"
+      --context ${context} --iterations 32)
+    set_tests_properties(cuda_${context} PROPERTIES TIMEOUT 180 LABELS "hardware;zluda")
+  endforeach()
+  if(EXISTS "${D4R_ZLUDA_ROOT}/build-info.json")
+    add_test(NAME cuda_f16_mma_reference COMMAND d4r_cuda_mma_probe
+      --hip-root "${D4R_HIP_ROOT}" --cuda-dll "${D4R_ZLUDA_ROOT}/nvcuda.dll")
+    set_tests_properties(cuda_f16_mma_reference PROPERTIES TIMEOUT 120
+      LABELS "hardware;zluda;mma;reference"
+      ENVIRONMENT "D4R_ZLUDA_WMMA=1;D4R_ZLUDA_WMMA_F16_REFERENCE=1")
+    add_test(NAME cuda_images COMMAND d4r_cuda_image_probe
+      --hip-root "${D4R_HIP_ROOT}" --cuda-dll "${D4R_ZLUDA_ROOT}/nvcuda.dll" --iterations 32)
+    set_tests_properties(cuda_images PROPERTIES TIMEOUT 90 LABELS "hardware;zluda;descriptors")
+    add_test(NAME cuda_images_async COMMAND d4r_cuda_image_probe
+      --hip-root "${D4R_HIP_ROOT}" --cuda-dll "${D4R_ZLUDA_ROOT}/nvcuda.dll" --iterations 32)
+    set_tests_properties(cuda_images_async PROPERTIES TIMEOUT 90 LABELS "hardware;zluda;descriptors;async"
+      ENVIRONMENT "D4R_DIAG_ASYNC_ARRAY_COPY=1")
+    add_test(NAME d3d12_cuda_images COMMAND d4r_d3d12_dlss_probe
+      --hip-root "${D4R_HIP_ROOT}" --cuda-dll "${D4R_ZLUDA_ROOT}/nvcuda.dll" --interop-mode images --iterations 1)
+    set_tests_properties(d3d12_cuda_images PROPERTIES TIMEOUT 90 LABELS "hardware;interop;zluda;descriptors")
+  endif()
+endif()

LICENSE

@@ -1,73 +1,674 @@
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+if any, to sign a "copyright disclaimer" for the program, if necessary.
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+<https://www.gnu.org/licenses/>.
+
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+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
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+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

NOTICE

@@ -1,7 +1,8 @@
 d4r
 Copyright 2026 countervolts
 
-This product is licensed under the Apache License, Version 2.0 (see LICENSE), except for the files
+This product is licensed under the GNU General Public License, version 3 only
+(GPL-3.0-only; see LICENSE), except for the files
 listed below.
 
 patches/zluda/*.patch

README.md

@@ -8,6 +8,12 @@ Preset L is NVIDIA's DLSS 4.5 model for Ultra Performance, especially at 4K. Set
 
 **Proof of concept:** d4r shows that DLSS can run on an AMD GPU, but it is not really that practical for everyday use yet. It has been tested on one GPU in a handful of games and depends on unreleased patches to ZLUDA and vkd3d-proton.
 
+**Windows (experimental):** d4r also runs natively on Windows 11, in D3D12 games, with no Wine or Proton. It supports the DLSS 4 (K) and DLSS 4.5 (M) models. Installing works like the Linux release: extract the ZIP into the game folder, copy in two NVIDIA files, and edit `d4r\d4r.ini`. See [the Windows guide](packaging/windows/WINDOWS_README.txt); `d4r\d4r-check.ps1` checks an install and writes a bug-report ZIP.
+
+Only the Radeon RX 9070 XT (gfx1201) has been tested on real hardware here. Its backend checks pass for K and M in Silent Hill 2 and Cyberpunk 2077 at 4K; those runs are correctness checks, not FPS benchmarks, and Windows performance is still under development. Community logs from an RX 9060 XT (gfx1200) show native K/M execution and finite output in Cyberpunk and Dawnwalker, but texture/LOD and motion artifacts are still reported, so that is backend coverage and not completed image-quality validation. The other targets (RDNA3 `gfx1100..gfx1103`, RDNA3.5 `gfx1150..gfx1154`) are compile-tested only. Windows preset E and L are not available. NVIDIA DLLs are supplied by you and are never part of the repository; the quick launcher can use a distributor-supplied DLL pair, but that packaging support does not establish redistribution permission.
+
+More: [Windows GPU coverage](docs/windows-gpu-support.md), [measurements](docs/windows-performance.md), [build and validation notes](docs/windows-rdna4-port.md), and the [diagnostic launcher](docs/windows-game.md) and [quick test](docs/windows-quick-test.txt) used for bug reports.
+
 See [supported games](SUPPORTED_GAMES.md) for the tested games and DLSS models.
 
 > **Not affiliated with NVIDIA or AMD.**
@@ -154,6 +160,6 @@ Gameplay recordings of each DLSS model at the Quality, Performance and Ultra Per
 
 ## License
 
-Apache License 2.0 (see [LICENSE](LICENSE)). The patches in `patches/` are offered under the licenses of the projects they modify: ZLUDA (Apache-2.0 or MIT) and vkd3d-proton (LGPL-2.1). See [NOTICE](NOTICE).
+GNU General Public License, version 3 only (GPL-3.0-only; see [LICENSE](LICENSE)). The patches in `patches/` are offered under the licenses of the projects they modify: ZLUDA (Apache-2.0 or MIT) and vkd3d-proton (LGPL-2.1). See [NOTICE](NOTICE).
 
 To contact me my discord is `._ayo`.

docs/windows-game.md

@@ -0,0 +1,143 @@
+# Native Windows RDNA3 / RDNA4 game development package
+
+Validated hardware: Windows 11 x64 / Radeon RX 9070 XT / gfx1201. Native K and
+M transformer kernels pass standalone D3D12 + OptiScaler checks. Silent Hill 2
+K now renders real menu frames and M renders a saved gameplay level with
+GPU NaN/Inf checks. Both K and M pass 3840x2160 output on this machine.
+Cyberpunk 2077 2.31 also reaches saved gameplay with K and M at 3840x2160:
+all required native transformer layers execute and output checks pass.
+The [port notes](windows-rdna4-port.md) record session counts and limitations.
+Performance measurements and their controls are recorded in
+[windows-performance.md](windows-performance.md). This is a
+development package; no NVIDIA proprietary DLL is included.
+
+Experimental builds also accept gfx1100..gfx1103 (RDNA3), gfx1150..gfx1154
+(RDNA3.5) and gfx1200 (for example RX 9060/9060 XT). These targets are
+**compile-tested only**; no physical validation here has been performed.
+RX 9070 and other gfx1201 cards also remain untested. Use a package built for
+the GPU's actual HIP architecture: its `gpu-target.json`, host shim and ELF
+code objects must agree. Installation/runtime reject mixed targets. See
+[windows-gpu-support.md](windows-gpu-support.md) for separate-target build
+commands, the fork review and the first hardware diagnostic gate.
+
+Before changing game files, the runner inventories HIP devices without
+executing kernels. It rejects another architecture's package and a local
+D3D12 proxy identifying itself as vkd3d/Wine, producing one diagnostic ZIP.
+RX 9060 XT needs gfx1200: the old gfx1201-only package fails before DLSS
+initialization on it. Use native D3D12. On an untested GPU, start with
+synchronous K and output diagnostics. The ordinary launcher does not attach
+a debugger. `-CaptureExceptions` is an explicit developer option; games with
+anti-debug protection can refuse it.
+
+Numeric CUDA driver NGX initialization searches for `nvngx_dlss.dll` beside
+the calling d4r shim. The installer stages your local feature DLL in `d4r/`
+and the original NVIDIA core in `d4r/vendor/`. `Libraries.NvngxDlssPath` is
+the feature directory. Keeping the feature DLL only in `vendor/` causes
+`BAD00004` (FeatureNotFound) in numeric-ID games such as Cyberpunk.
+
+Build the shim/diagnostics, corrected ZLUDA, K/M native objects and patched
+OptiScaler using the scripts in `scripts/windows`, then run:
+
+```powershell
+.\scripts\windows\package-windows-game.ps1 -ArchivePath "$PWD\dist\windows-rdna4-game.zip"
+```
+
+The package pins TheRock 10.2.0a20260929 because its Windows external-memory
+mapping lifetime passes the repeated import/release test. Stable HIP 7.2 has
+a reproduced mapped-view leak; see `docs/windows-rdna4-port.md` for the source
+fix, exact dependency versions, validation and complete build commands.
+The ZIP contains only manifest-listed files, including a snapshot of committed
+d4r source. Private NVIDIA-derived objects, caches and diagnostic captures are
+excluded. Original FP8 M and the optional hardware-packing variant pass strict
+replay/network tests but do not establish a full-network speedup, so the game
+package retains its FP16-equivalent M baseline.
+
+Run a D3D12 game without anti-cheat using your locally supplied NVIDIA DLLs:
+
+```powershell
+.\dist\windows-rdna4-game\windows-game.ps1 -GameExe "D:\Games\SILENT HILL 2\SHProto\Binaries\Win64\SHProto-Win64-Shipping.exe" -NgxCore "C:\Users\Administrator\d4r\_nvngx.dll" -DlssDll "C:\Users\Administrator\d4r\nvngx_dlss.dll" -Preset 11
+```
+
+Use `-Preset 13` for M. The validated manifest requires DLSS 310.9.1 with the
+recorded SHA256; other feature DLLs require regenerating and validating the
+native manifest. Select an upscaler supported by OptiScaler in the game.
+The script installs `dxgi.dll`, an explicit DLSS configuration and a private
+`d4r` runtime directory, and captures stdout/stderr, exit code, loaded DLL paths,
+driver information and OptiScaler logs. Ordinary runs use a process job without
+an attached debugger. Add `-CaptureExceptions` to capture exception events and
+minidumps when reproducing a crash. A local
+ZIP bundle is printed at exit. `-RunSeconds 120` bounds a diagnostic run;
+the normal default allows you to play until you close the game.
+
+For the Silent Hill 2 startup black-screen investigation, add
+`-DiagnosticResolution 1280x720`. This backs up its two graphics configuration
+files, temporarily selects a window at that resolution, and restores the
+original bytes after the test. It does not change progression saves. First-use
+PTX compilation can be slow; `-CacheDirectory <existing-ZLUDA-cache>` reuses
+modules with matching GPU, codegen switches and ZLUDA binary fingerprint.
+
+Add `-ValidateOutput` to scan the entire RGBA16F DLSS output for NaN/Inf on
+the GPU before returning it to D3D12. Only two diagnostic counters (8 bytes)
+are read by the CPU; image data remains in VRAM. Validation failures are
+reported explicitly. Disable this diagnostic when measuring production speed.
+
+`-ProfileStages` records CPU completion time for seven interop/NGX stages,
+command-list split/replay, submitted state publication and suffix completion.
+The recording interval measures NGX calls on the recording thread, not Present.
+`-ProfileKernels` enables synchronizing HIP-event kernel profiling and changes
+frame scheduling; use it separately from a production FPS measurement.
+`-ProfileCommandHooks` samples one in 64 D3D12 interceptions to distinguish
+tracking/lock waits from driver calls. It is disabled in ordinary runs.
+`-ProfileCudaApi` aggregates existing CUDA API host durations without adding
+HIP events or synchronization. `-UncachedInteropLists` restores per-frame
+copy-list allocation for comparison with the normal safely reused lists.
+`-ProfileGpuBoundary` requires `-AsyncInterop` and measures D3D12 GPU intervals
+around the input/output copies and external fence. It reads 32 timestamp bytes
+only after existing completion, with no extra CPU wait. Its external interval
+includes HIP and scheduling; it is not an isolated transformer kernel time.
+The runner drains stdout/stderr concurrently as raw bytes; the earlier
+line-oriented PowerShell collector imposed large per-frame delays. The optional
+ZLUDA kernel profiler is for diagnostics only. Measurements and reproduction
+commands are in [windows-performance.md](windows-performance.md).
+
+`-AsyncInterop` enables the experimental K scheduling path. Submission queues
+the current frame's input/output dependencies and returns while a CUDA worker
+executes DLSS. Owned command memory is retained until GPU completion; feature
+release and resource reconfiguration wait for pending consumers. It passes
+the standalone queued-frame and Release/CreateFeature exact-output regression,
+but remains opt-in while game stability and performance are checked. It
+currently requires one D3D12 command queue. This switch is independent of
+profiling and output scans; omit those diagnostics for a production FPS run.
+
+Ordinary runs use OptiScaler info logging and suppress successful HIP/CUDA API
+messages. Errors, GPU identity, imports, frame records and native/translated
+kernel launches remain logged. `-VerboseRuntime` enables all API and frontend
+trace messages when investigating a failure. Numerical relaxation flags are
+cleared in the child process; FP16 rounding and subnormals stay enabled.
+
+The optional K output-store optimization is built locally from your NVIDIA DLL
+with `build-native-texture.ps1` and checked by `test-native-texture.ps1`;
+commands and measurements are in [windows-performance.md](windows-performance.md).
+Add `-LocalTextureKernels "C:\Users\Administrator\d4r\build\private-textures-gfx1201"`
+to the game command to install it. The object/manifest hashes and DLSS identity
+must match validation. These generated objects contain NVIDIA code, remain
+private, and are excluded from the distributable package. Ordinary launches
+inherit the game's resolution/window settings; the default argument is `-dx12`.
+
+Original files are backed up before replacement. Restore with:
+
+```powershell
+.\dist\windows-rdna4-game\windows-game.ps1 -Action restore -GameExe "D:\Games\SILENT HILL 2\SHProto\Binaries\Win64\SHProto-Win64-Shipping.exe"
+```
+
+Restore refuses to overwrite files changed since installation. Backups and
+diagnostic results are retained. The script does not change progression saves,
+system DLLs, driver settings or security settings. All runtime work is native
+Windows. Colour, depth, motion, exposure and output cross APIs through VRAM
+and shared D3D12 fences; the backend waits for the current frame and never
+uses a previous-frame fallback.
+
+OptiScaler source modifications are GPL-3.0 and exported under
+`source-patches/optiscaler`. ZLUDA source modifications are exported under
+`source-patches/zluda`; the LLVM gfx1154 backport is under
+`source-patches/zluda-llvm`. Dependency license texts and build hashes are included.

docs/windows-gpu-support.md

@@ -0,0 +1,189 @@
+# Experimental Windows RDNA3 / RDNA4 coverage
+
+The shim, diagnostics, native K/M kernels and game installer accept the
+targets below, with one package per actual ISA. **Only RX 9070 XT has physical
+validation here.** Community RX 9060 XT / gfx1200 logs now show K/M backend
+execution in Cyberpunk and Dawnwalker with all required native layers and
+finite output. Visual issues remain reported and are not resolved by those
+checks. All other targets are experimental and compile-tested; their DLSS,
+interop and performance remain unverified.
+
+| Family | Target | Examples / scope |
+| --- | --- | --- |
+| RDNA3 | gfx1100 | RX 7900 family; same-target workstation GPUs |
+| RDNA3 | gfx1101 | RX 7700 / 7700 XT / 7800 XT; same-target mobile/workstation GPUs |
+| RDNA3 | gfx1102 | RX 7600 / 7600 XT; same-target mobile/workstation GPUs |
+| RDNA3 | gfx1103 | RDNA3 integrated graphics |
+| RDNA3.5 | gfx1150, gfx1151, gfx1152, gfx1153, gfx1154 | Corresponding integrated graphics targets |
+| RDNA4 | gfx1200 | RX 9060 / 9060 XT; same-target GPUs |
+| RDNA4 | gfx1201 | RX 9070 / 9070 XT / 9070 GRE; same-target GPUs |
+
+Names and IDs follow [LLVM processors](https://llvm.org/docs/AMDGPUUsage.html#processors)
+and [ELF ABI](https://llvm.org/docs/AMDGPUUsage.html#amdgpu-elf-header-e-flags).
+`tools/windows/gpu-targets.json` supplies CMake-generated C++, PowerShell and
+the private texture builder. Selection uses HIP's real `gcnArchName` and the
+D3D12 adapter LUID, including systems with several GPUs sharing a target.
+Marketing names do not control eligibility.
+
+All listed RDNA3/RDNA3.5/RDNA4 targets with existing gfx11/gfx12 WMMA contracts
+are included. TBD RDNA4m gfx1170..gfx1172 and gfx12.5 gfx1250/gfx1251 are
+different ISA groups and excluded. Unknown future targets need explicit review.
+Check [AMD's Windows matrix](https://rocm.docs.amd.com/projects/radeon-ryzen/en/latest/docs/compatibility/compatibilityrad/windows/windows_compatibility.html)
+for driver/runtime eligibility. Compiler support cannot supply missing Windows
+driver support or external-memory APIs, especially on APUs.
+
+## Installation and diagnostics
+
+Use the actual target's archive: **gfx1200 for RX 9060 XT**, for example.
+Metadata, host target and every ELF target must agree. Runtime/scripts reject
+mixed targets and never rename targets, rewrite ELF IDs or set
+`HSA_OVERRIDE_GFX_VERSION`. Legacy metadata-free packages remain gfx1201 only.
+
+Before changing game files, `windows-game.ps1` now runs a read-only HIP
+inventory and checks the target and wave32. Inventory allocates no GPU buffers
+and runs no kernels; success is discovery, not validation. Failure prints one
+ZIP containing stdout/stderr, exit code, runtime/DLL and driver details. A local
+`d3d12.dll` identifying itself as vkd3d/Wine is rejected before install. Restore
+the game's native D3D12 installation; the script never loads or removes that
+proxy itself. Begin synchronously on an untested GPU:
+
+```powershell
+.\windows-game.ps1 -GameExe "D:\Games\Example\Game.exe" -NgxCore "C:\LocalDLLs\_nvngx.dll" -DlssDll "C:\LocalDLLs\nvngx_dlss.dll" -Preset 11 -ValidateOutput -CaptureExceptions
+```
+
+The local DLLs must match the documented NGX version and DLSS 310.9.1 SHA256
+in `package.json`. NVIDIA DLLs are never distributed. Retain the printed ZIP
+on failure. Async K and performance are subsequent gates; gfx1201-specific
+FP8, arithmetic and tuning experiments remain separate.
+
+## Issue #10 review, 2026-10-02
+
+Reviewed [comment 5952822115](https://github.com/countervolts/d4r/issues/10#issuecomment-5952822115),
+including all 32 attached text logs from eight attempts. HIP discovers
+**RX 9060 XT / gfx1200** successfully. Every attempt fails with the old shim's
+**"No selected gfx1201 device"** rejection; OptiScaler reports `support=false`
+/ `BAD00002`. None reaches `D4R_RUNTIME` initialization or native transformer
+execution. These logs do not demonstrate a K/M kernel crash. Use the gfx1200
+package instead of overriding architecture. Three attempts also load
+vkd3d-proton 3.1.0 from a local D3D12 proxy, outside this Windows backend.
+
+The new packages/preflight address the identified failures. They do not prove
+those games work on RX 9060 XT; a new native-D3D12 run on that GPU is required.
+Raw community logs and personal directory paths stay local.
+
+## Community retest, 2026-10-03
+
+[Comment 5962444244](https://github.com/countervolts/d4r/issues/10#issuecomment-5962444244)
+uses the corrected `52d9872` package / `3d62b98` binaries on RX 9060 XT
+(`gfx1200`, 16 GB). Cyberpunk K/M complete 4,365 / 1,751 session frames;
+Dawnwalker K/M complete 6,713 / 1,690. Every frame has a finite-output GPU
+check, all required native layers execute and all four sessions exit normally.
+The logs record zero backend failures, previous-frame outputs and CPU image
+copies. This is community backend coverage, not a reference-image comparison:
+the tester reports texture/LOD and motion-related artifacts. All four runs use
+the HDR network input/output path, unlike the local Cyberpunk LDR validation.
+
+Spider-Man 2 crashes with `0xc0000005` before any completed DLSS frame;
+its nonstandard launch is not evidence of a transformer kernel failure.
+Assassin's Creed exits with zero frames and Streamline logs repeated internal
+minidumps; its clean process exit is still inconclusive. Their causes remain
+open without a stack trace. The Witcher 3 log in
+[comment 5962808629](https://github.com/countervolts/d4r/issues/10#issuecomment-5962808629)
+selects the gfx1200 d4r shim instead of the original NGX core (its SHA256
+matches the shipped shim exactly), and the installer correctly refuses
+before modifying the game. It does not establish a Witcher runtime failure.
+
+## Build
+
+Prepare dependencies following `windows-rdna4-port.md`. Default: gfx1201.
+Select another target explicitly and keep separate directories:
+
+```powershell
+$arch = 'gfx1101'  # for example RX 7800 XT
+$diag = "$PWD\dist\windows-$arch-diagnostics"
+.\scripts\windows\build-windows-rdna4.ps1 -RuntimeProfile therock -GpuArch $arch -ZludaRoot "$PWD\dist\zluda-windows-final" -BuildDirectory "$PWD\build\windows-$arch" -InstallDirectory $diag
+.\scripts\windows\stage-native-k.ps1 -DlssDll "$PWD\nvngx_dlss.dll" -PackageRoot $diag
+.\scripts\windows\stage-native-m.ps1 -DlssDll "$PWD\nvngx_dlss.dll" -PackageRoot $diag
+.\scripts\windows\package-windows-game.ps1 -DiagnosticRoot $diag -GpuArch $arch -PackageRoot "$PWD\dist\windows-$arch-game" -ArchivePath "$PWD\dist\windows-$arch-game.zip"
+```
+
+Rebuild diagnostics for the new inventory executable. The package keeps strict
+K FP16 and M FP16-equivalent baselines; native M FP8 remains disabled. CMake:
+`-DD4R_GPU_ARCH=gfx1101`. Some source/executable names retain gfx1201/gfx12 for
+compatibility; actual targets follow the selected architecture.
+
+One command compiles all eleven targets without GPU workloads:
+
+```powershell
+.\scripts\windows\build-windows-gpu-matrix.ps1 -ZludaRoot "$PWD\dist\zluda-windows-final"
+```
+
+Add `-PackageGames -DlssDll "$PWD\nvngx_dlss.dll" -ArchiveDirectory "$PWD\dist\windows-gpu-archives"`
+to stage/archive all packages after committing source and preparing OptiScaler.
+Use `-GpuArchitectures gfx1100,gfx1101,gfx1102,gfx1200,gfx1201` for a subset.
+Per-target logs and `matrix-build.json` distinguish compilation from execution.
+The supplied DLL generates manifests locally and is never copied into archives.
+
+Rebuild LLVM/ZLUDA when updating from an older package: the old LLVM 22 backend
+does not recognize gfx1154 even though Clang 24 compiles native objects for it.
+`build-zluda-llvm.ps1` now applies the source backport in `patches/zluda-llvm`
+automatically; relink with `build-zluda-windows.ps1` afterward. Compiler base
+and patch hashes are recorded in the ZLUDA build metadata and included in game
+packages. The expected patched LLVM submodule appears modified in its parent
+checkout; its complete source delta is exported, not a binary target override.
+
+For a compilation gate requiring neither a GPU nor NVIDIA DLLs, run:
+
+```powershell
+.\scripts\windows\test-zluda-target-compilation.ps1 -ZludaRoot "$PWD\dist\zluda-windows-final"
+```
+
+All 33 public PTX compilations pass for the eleven targets: Driver API pattern,
+FP16 MMA strict reference and explicit WMMA modes, with correct ELF targets
+and wave32. The gfx12 strict F16 reference intentionally retains its existing
+double-precision helper; the separate WMMA mode checks code generation only.
+It does not enable relaxed arithmetic in game packages or validate numerical
+results on other GPUs. The original gfx1154 compiler abort is preserved locally
+in `build/llvm-gfx1154/before.log`; the regression results are in
+`test-results/windows-gpu-coverage/zluda-offline`.
+
+## Fork adaptation
+
+Reviewed [realdody's branch](https://github.com/realdody/d4r/tree/windows-rdna3)
+at `ae530b0f53ed5c0bb87558dd7c20f619e014e4fd` and the newer
+[`1897b4a` correction](https://github.com/realdody/d4r/commit/1897b4afa79832bd879234cfb37e7c1468db5cde).
+Earlier MSVC binary16 and generated `BOOL` fixes remain. The earlier forced
+gfx12 fragment layout is not used.
+
+The newer fork reports Windows gfx1101 `permlanex16` returning its own lane,
+duplicating even K values into odd slots. This port adapts that finding into
+`kernels/common/wave32_exchange.h`: a Windows/gfx11-only per-wave LDS exchange,
+with native gfx11 layout, generic x/y/z indexing, 2 KiB scratch (512 threads
+maximum), volatile accesses and wave fences/barriers protecting scratch reuse.
+It covers K/M fragment conversions and other K half-wave exchanges. gfx12 and
+Linux keep the original instruction path. The raw gfx11 probe uses its actual
+intrinsic/layout, without a forced gfx12 shim.
+
+The fork reports RX 7800 XT enc1/enc2 identity/nonzero/reference checks. Those
+are **the author's results**, not validation of this adaptation or full K/M
+here. LDS exchange, full network, translated CUDA, accuracy, interop and speed
+still need physical gfx11 testing. Credit: realdody <dodobozicek@gmail.com>.
+
+## Results and next hardware gate
+
+All eleven targets compile the complete MinGW host build and 19 device objects
+with TheRock `10.2.0a20260929`, HIP `7.17.26386`, Clang 24. Software target
+contracts inspect actual ELF objects without other-target GPU launches.
+RX 9070 XT passes all 20 CTest gates after these changes. K/M full-frame and
+package checks are recorded in `windows-rdna4-port.md`. Local logs are in
+`build/windows-gpu-coverage` and `test-results/windows-gpu-coverage`.
+
+The first hardware gate on another GPU needs no NVIDIA DLL:
+
+```powershell
+.\scripts\windows\test-windows-rdna4.ps1 -RuntimeProfile therock -PackageRoot "$PWD\dist\windows-gfx1101-diagnostics" -ZludaRoot "$PWD\dist\zluda-windows-final"
+```
+
+Success requires exit 0, correct actual target, exact HIP/PTX/WMMA/pixel checks
+and stable interop lifetime. Failure prints one ZIP. Full K/M reference,
+temporal, DLSS and game validation remain subsequent gates.

docs/windows-performance.md

@@ -0,0 +1,810 @@
+# Windows RDNA4 measurements
+
+Hardware: RX 9070 XT / gfx1201, Windows 11, display driver 32.0.31041.1004.
+Runtime: TheRock 10.2.0a20260929, HIP 7.17.26386; ZLUDA b0161a4 with
+`D4R_ZLUDA_WMMA=1`, FP8 widening, native FP8 disabled, f16 reference rounding.
+
+The original serializing profiler uses HIP events on the actual launch stream, including
+separate measurements of one-time weight preparation. It synchronizes each
+sampled launch and changes scheduling: these numbers are not application FPS.
+HIP occupancy predictions are not measured hardware occupancy. The native
+objects' actual wave32, LDS, VGPR/SGPR and spill counts are available in
+`llvm-readobj --notes` and can be attached to the JSON report. Memory bandwidth
+and WMMA utilization were not measured; no utilization is inferred from timing.
+
+The identical four-frame standalone D3D12/OptiScaler workloads output 512x288.
+Summing the measured main-kernel event times and dividing by four gives:
+
+| Preset | Fully translated, ms/frame | Native FP16-equivalent, ms/frame |
+| --- | ---: | ---: |
+| K | 157.745441 | 0.684675 |
+| M | 7.428538 | 1.566500 |
+
+Both rows include translated input/output tails. Native overrides cover all
+11 K layers and five M layers; M's tube layer executes six times per frame.
+M native and translated RGB are bit-exact, with max absolute/relative error 0.
+K native remains bit-exact against its independently validated native control;
+fully translated K has the previously documented arithmetic differences.
+All outputs are finite. These are reference-correct codegen settings, not
+measurements of a relaxed fast-math translated configuration.
+
+M's first profiled Evaluate includes about 0.9 seconds of host initialization;
+the four-sample CPU mean must not be treated as steady-state latency. Its
+median Evaluate host completion is 4.855 ms. GPU events and prep phases are
+reported separately in the raw JSON.
+
+The initial game runner used PowerShell line-oriented output redirection.
+It heavily throttled verbose stdout/stderr. The runner now concurrently drains
+raw byte streams using the same approach as the standalone diagnostics.
+
+| Silent Hill 2 stage, CPU mean | Initial capture, ms | Raw-byte capture with HIP profiler, ms |
+| --- | ---: | ---: |
+| Input fence wait | 5.641 | 0.833 |
+| Input conversion and CUDA array upload | 13.196 | 0.668 |
+| NGX Evaluate host call | 25.715 | 3.350 |
+| NGX all-stream completion | 1.846 | 0.033 |
+| Output CUDA array download | 4.288 | 0.167 |
+| Output conversion and shared fence signal | 1.500 | 0.033 |
+
+The first run additionally scanned every output (10.142 ms in that throttled
+capture); the kernel-profiling run disables that scan. Both use a temporary
+1280x720 window and current-frame VRAM interop. These are separate menu/game
+runs, not a controlled whole-game FPS comparison. No synchronization was
+removed to obtain the improvement. The raw-byte profiling run completed
+2345 K frames, with no d4r failure, CPU image copy or previous-frame output.
+
+Reproduce native or translated measurements with locally supplied NVIDIA DLLs
+at the repository root and the separately built profiling runtime:
+
+```powershell
+.\scripts\windows\profile-windows-rdna4.ps1 -Preset 11
+.\scripts\windows\profile-windows-rdna4.ps1 -Preset 11 -Translated
+.\scripts\windows\profile-windows-rdna4.ps1 -Preset 13
+.\scripts\windows\profile-windows-rdna4.ps1 -Preset 13 -Translated
+```
+
+`profile_report.py <results-directory> --output profile.json` summarizes raw
+CPU stages and every kernel's event time, launch geometry, registers, private
+memory, LDS and predicted blocks per multiprocessor. Add
+`--metadata-directory <directory-of-llvm-readobj-notes>` for native wave sizes
+and compiler spill counts. Reports and proprietary workload inputs remain local.
+
+Native FP8 remains a separate optional experiment; the package uses the
+validated FP16-equivalent baseline. Its later checks and timings are below.
+
+## K host synchronization and asynchronous submission
+
+Current priority is K performance. The user's synchronous 4K reading is
+49–51 FPS / 53% GPU utilization, versus approximately 80+ FPS / 100% with
+FSR4. These readings do not identify a CPU hardware limit or provide a
+controlled same-scene comparison. M/FP8 optimization is deferred.
+
+ZLUDA candidate `a1c506f` adds `D4R_ZLUDA_PROFILE_API`, enabled by the game
+runner's `-ProfileCudaApi`. It measures existing API host durations, aggregates
+per thread and logs every two seconds without HIP events or additional waits.
+The synchronous control shows five `cuCtxSynchronize` calls per frame with
+about 3.9 ms aggregate host time. CUDA launch host overhead is approximately
+0.46 ms per frame. Cached copy-list setup is only 0.011 ms median. These host
+measurements include GPU waits and must not be added to GPU kernel times.
+
+| K/4K command submission, CPU median | Synchronous | First async | Async without CUDA mutex |
+| --- | ---: | ---: | ---: |
+| Entire submission, ms | 10.512 | 2.676 | 0.181 |
+| DLSS boundary, ms | 10.083 | 2.604 | 0.124 |
+| Consumer suffix completion, ms | 0.350 | 0.005 | 0.004 |
+
+The first async game run completes 9481 finite frames; the user reports
+60 FPS / 63% GPU. The mutex-free run crashes during feature recreation after
+366 finite frames, so its submission timing is not a successful gameplay
+benchmark. The standalone burst/recreate reproducer subsequently identifies
+caller-owned GPU backing freed after ReleaseFeature returns. Waiting for
+pending D3D12 consumers in ReleaseFeature fixes the reproducer: all twelve
+sync/async test frames pass, and corresponding RGB outputs are exact. Game
+stability and FPS must be checked separately on the fixed build.
+
+The fixed game retest on 2026-10-02 completes 16941 K/4K frames, all finite,
+including feature recreation and color-format reimports, with zero backend
+failures. The user reports 62 FPS / 63% GPU. Median CPU submission is
+0.197 ms, NGX host completion on the worker is 4.400 ms and output validation
+is 0.380 ms. The 10.162 ms median worker input wait includes queued game
+rendering. These results establish a stable five-minute test of this fix,
+not a conclusion about the remaining GPU idle time or FSR4 performance.
+
+`-AsyncInterop` is opt-in. It queues input/output fences on the submission
+thread, executes CUDA on a worker and retires owned command memory by GPU
+completion. Three copy slots bound outstanding ownership. The queue consumes
+the output of the same frame, with no CPU image copy. The worker's input wait
+includes its lead behind submitted rendering and is not a CPU submission
+stall. Neither that duration nor the NGX recording interval measures Present
+latency. Reconfiguration waits for all consumers; ordinary submission does not
+hold the CUDA mutex. The experimental runtime currently supports one queue.
+
+```powershell
+.\scripts\windows\test-async-k.ps1
+```
+
+The test generates fresh synchronous controls, submits three frames without
+intermediate CPU completion, and repeats while releasing/recreating the DLSS
+feature with work pending. Results include exact RGB comparisons, finite GPU
+scans, stdout/stderr, exceptions and runtime provenance. To include the local
+validated output-store optimization, pass its combined native directory with
+`-NativeRoot`; proprietary objects remain local.
+
+`-ProfileGpuBoundary` (requires `-AsyncInterop`) adds D3D12 timestamps before
+and after the VRAM input/output copies. Resolved results are read only once
+the copy slot's existing fence completes; 32 diagnostic bytes per frame are
+read and no new completion wait is added. `external_span_ms` spans HIP and
+host/driver scheduling across the external fence. `between_boundaries_ms`
+also includes game rendering, and `input_interval_ms` is not Present timing.
+These queries obey the queue's timestamp ordering and add GPU commands; they
+are disabled for an ordinary FPS run. GPU clock behavior during idle can
+affect intervals; no hardware occupancy is inferred. Timestamp semantics:
+[Microsoft D3D12 timing](https://learn.microsoft.com/en-us/windows/win32/direct3d12/timing).
+
+The timestamp-enabled 4K burst/recreation gate completes twelve frames, all
+finite; all six async RGB outputs still match their fresh controls exactly.
+Each async mode emits all three timing records, including the final frame
+at feature release. Results: `test-results/k-async-gpu-boundary-4k`.
+All sixteen CTest gates pass on the rebuilt shim. Reproduce with:
+
+```powershell
+.\scripts\windows\test-async-k.ps1 -ProfileGpuBoundary
+```
+
+The 2026-10-02 game timestamp run completes 9384 K/4K frames without backend
+errors (`test-results/silent-hill2-k-gpu-boundary-4k`). Median GPU intervals:
+input copies 0.061 ms, external span 5.586 ms, output copy 0.208 ms, entire
+boundary 5.856 ms, between boundaries 9.512 ms. Median input interval is
+15.383 ms. Output scans and serializing kernel events are off. This locates
+the remaining time outside the small D3D12 copies; it does not prove whether
+that time is game GPU work, CPU waits or context scheduling.
+
+### Present and GPU-busy capture
+
+`capture-presentmon.ps1` attaches the official PresentMon 2.6.0 x64 CLI to
+one running game process. It verifies SHA256
+`b2a706bc6ad475749e3b7e3409263aa1e6906d45bdcf993f6dbc0f660188f1af`,
+uses a unique ETW session and stops at its time bound/process exit, without
+replacing any existing trace or installing a service. It saves CSV, console
+output, driver version, target PID and the HWS registry setting. The default
+downloads the pinned CLI into `.tools` if needed. Run elevated when ETW access
+requires it; no driver or security setting is changed.
+
+```powershell
+.\scripts\windows\capture-presentmon.ps1 -Seconds 30
+python .\tools\windows\profile_report.py <capture-directory> --output profile.json
+```
+
+Keep the game foreground and use the same scene/quality setting for comparison.
+The report separates swapchains and preserves missing metrics. Present FPS
+comes from present intervals, rather than NGX recording timestamps. GPU
+busy/wait are ETW estimates, not a hardware sensor percentage; CPU busy is
+frame work/wait attribution before Present, not physical CPU utilization.
+HWS and cross-API context attribution can affect accuracy. Metric definitions:
+[PresentMon console documentation](https://github.com/GameTechDev/PresentMon/blob/v2.6.0/README-ConsoleApplication.md).
+
+The initial 60-second trace captures 2172 presents during a changing
+Independent Flip / Composed Flip session, with mean present interval
+27.593 ms (36.241 FPS), mean GPU busy 18.759 ms and GPU wait 2.303 ms.
+This is not a controlled capture of the user's 62 FPS scene and is excluded
+from speedup conclusions. Its containing game run completes 9627 K/4K frames
+without backend errors; ordinary recording intervals later return to about
+16 ms. A stable foreground-scene capture is needed before optimizing from
+the ETW metrics. Raw files: `test-results/silent-hill2-k-presentmon-4k`.
+
+The following 30-second capture starts after the user confirms the same
+foreground scene is ready. All 1902 presents use Hardware Independent Flip
+and SyncInterval 0; input/output resolution remains 2259x1271 -> 3840x2160.
+The mean present interval is 15.730 ms (**63.574 FPS**). PresentMon estimates
+mean GPU busy/wait at 14.504/1.110 ms, GPU time at 15.614 ms and CPU wait at
+0.052 ms. These frame-attributed metrics do not equal a hardware utilization
+sensor and do not establish a physical CPU limit. FSR4 has not been captured
+in this same scene, so its previously reported 80+ FPS remains a user reading.
+Raw files: `test-results/silent-hill2-k-steady-profile-4k`.
+
+The containing ten-minute diagnostic completes 36591 K frames, with zero
+backend failures, CPU image copies, previous-frame outputs or recorded game
+crashes. It deliberately stops at its time bound. Output scans and serializing
+kernel events are off. Whole-run median boundary timestamps measure input
+copies 0.063 ms, external span 5.399 ms and output copies 0.212 ms. The external
+span includes HIP execution and host/driver scheduling, not only transformer
+arithmetic. These medians cover the whole run; the PresentMon numbers above
+come from the explicitly selected 30-second scene.
+
+### Deferred kernel events and batched inputs
+
+The new optional `-ProfileKernelsDeferred` samples every seventeenth launch
+by default (`-KernelProfileEvery`). Its thread-local pool is bounded to 64
+event pairs. It queries ready events before selected launches and after the
+application's existing context synchronization, reusing a pair only after
+reading its old timestamps. It adds no explicit event/stream/device completion
+wait; timestamps, queries and logging still add overhead. Stream capture and
+legacy default-stream launches are skipped by default. `-ProfileLegacyStream`
+allows the latter explicitly, retaining their legacy cross-stream ordering.
+This opt-in is necessary to profile this DLSS K binary, whose measured launches
+use the legacy default stream. `completion_ms` now denotes collection lag for
+deferred records. The report separates serializing/deferred records and retains
+invalid timestamps and skipped samples outside kernel timing statistics.
+
+HIP 7.17.26386 reports some negative elapsed times in the tiny queued PTX
+diagnostic, including intervals exceeding one microsecond. These are logged as
+`D4R_KERNEL_PROFILE_INVALID`; they are not clamped or used as valid GPU samples.
+The cause is not established, and nonnegative samples alone cannot prove a
+runtime's timestamp accuracy. The diagnostic verifies all 516 PTX launches
+across primary/created contexts and individual/queued submission, checks final
+device output and guards, accounts for every collected event and verifies safe
+default-stream skipping. Results: `test-results/zluda-deferred-profile-final-ptx`.
+The same diagnostic with stable HIP SDK 7.2 also verifies all 516 outputs and
+reproduces negative intervals (`test-results/zluda-deferred-profile-stable-ptx`).
+A native K dec4 sample is negative too; this is not confined to tiny PTX kernels.
+Do not infer hardware/kernel utilization or a speedup from these event samples.
+HIP event semantics: [AMD event management](https://rocm.docs.amd.com/projects/HIP/en/latest/reference/hip_runtime_api/modules/event_management.html).
+
+The opt-in `-BatchInputCopies` (`D4R_BATCH_INPUT_COPIES=1`) enqueues native
+pixel decoding and device-to-array input copies on the shared HIP/ZLUDA legacy
+default stream. One all-stream completion remains before NGX can use any input
+on its own streams. The independent D3D12 input-fence check, NGX completion and
+same-frame output dependency remain. Output transfers retain their existing
+completion. Every image stays in VRAM. The ZLUDA implementation adds
+`cuMemcpy2DAsync_v2` using `hipMemcpyParam2DAsync`; format-80 array emulation
+is explicitly rejected because its synchronous implementation uses temporary
+host storage. The Windows path supplies canonical FP16/FP32 arrays instead.
+This experiment remains disabled by default. Correctness checks pass, but the
+controlled game comparison below shows only a small frame-time difference.
+
+```powershell
+.\scripts\windows\test-deferred-kernel-profile.ps1
+.\scripts\windows\test-async-k.ps1 -BatchInputCopies -ProfileGpuBoundary -ZludaRoot "$PWD\dist\zluda-windows-deferred-profile"
+```
+
+The rebuilt Windows shim and new ZLUDA pass all seventeen CTest gates,
+including the added asynchronous pitched FP16/FP32 array-copy test and
+padding checks. Completed boundary timestamps are also read before reuse if
+the copy fence advances between the first completion scan and slot selection;
+this prevents diagnostic records being overwritten without adding a wait.
+
+The depth/stencil and packed-format burst/recreation gates pass 24 full K/4K
+frames. All twelve candidate RGB outputs match fresh unbatched synchronous
+controls exactly, with finite RGBA. The former also enables deferred legacy
+events; invalid timestamps remain separate. These short correctness fixtures
+include initialization and do not establish steady-state FPS or a copy-stage
+speedup. Raw results: `test-results/k-batch-deferred-4k` and
+`test-results/k-batch-packed-4k`. ZLUDA candidate source is `67127dd`, isolated
+in `dist/zluda-windows-deferred-profile`; patches 0016/0017 and all preceding
+patches apply to the clean pinned base. The public prerelease is unchanged.
+After committing/rebuilding ZLUDA with a clean worktree, the twelve-frame
+four-way K/4K gate passes again with exact candidate RGB and finite RGBA
+(`test-results/k-batch-committed-source-4k`). This warms the committed runtime's
+JIT cache before the game comparison.
+
+The following user-confirmed 30-second foreground-scene capture contains 1925
+presents at **64.265 FPS**, versus the previous unbatched run's 63.574 FPS.
+Both use 2259x1271 -> 3840x2160, Independent Flip and SyncInterval 0, without
+kernel-event profiling, output scans or attached debuggers. Mean present time
+is 15.561 versus 15.730 ms, a 0.169 ms difference. This single pair does not
+establish repeatability or a large performance improvement. The containing
+ten-minute candidate run completes 35673 K frames with zero backend failures,
+CPU image copies, previous-frame outputs or recorded game crashes. Whole-run
+median input preparation drops from 0.482 to 0.332 ms; median external span
+is 5.438 versus 5.399 ms. Whole-run stages are not the selected PresentMon
+window. No GPU utilization conclusion is drawn from ETW estimates. Results:
+`test-results/silent-hill2-k-batch-inputs-4k`. The K performance gate stays open.
+
+### AMD driver telemetry
+
+A separate read-only diagnostic polls the installed driver's ADLX base C
+interfaces for device-wide usage, core/VRAM clocks, board power and temperatures.
+It adds no work to game queues and changes no tuning setting. Build it locally
+using the official SDK pinned at `32b5a740d42295c5dfe9026b9f52683da0f3af91`:
+
+```powershell
+.\scripts\windows\build-gpu-telemetry.ps1
+.\scripts\windows\capture-presentmon.ps1 -Seconds 30 -GpuTelemetry
+```
+
+The SDK retains its own AMD license; SDK headers, implementations, driver DLLs
+and the SDK-dependent executable are excluded from public game packages.
+The probe is independently written and uses the documented C ABI, including
+with LLVM-MinGW. It loads `amdadlx64.dll` only from Windows System32 and
+releases acquired interfaces before ADLX termination/unload. GPU selection
+must match exactly one device (`-GpuName` selects a different name substring).
+The process exits at its bound or target process exit. The capture retains
+CSV, raw stderr, exit/timeout, driver DLL version/hash and SDK build identity.
+No optional telemetry failure is silently converted to a valid measurement.
+
+CSV records independent host UTC/QPC timestamps and the driver's raw sample
+timestamp. On this installed ADLX 1.5.0.124, the latter is uptime despite the
+SDK description of epoch time; do not interpret it as UTC. Unsupported metrics
+are blank, zero utilization/clock remains valid, and the report uses each
+driver timestamp once. Device-wide usage is distinct from PresentMon's
+per-process frame attribution and is not measured WMMA occupancy. ADLX API:
+[AMD GPU metrics sample](https://gpuopen.com/manuals/adlx/adlx-c__perf_g_p_u_metrics/).
+
+The initial idle-device smoke test captures six valid polls, selects the real
+RX 9070 XT and terminates ADLX successfully. Board power/core clock/usage
+and temperatures are available; `GPUPower` is unsupported and stays absent
+from the report. The first poll costs roughly 10 ms for initialization;
+subsequent polls are about 0.08 ms at 500 ms intervals. This idle smoke test
+does not establish game clocks, utilization or an overhead-free benchmark.
+Results: `test-results/gpu-telemetry-smoke`.
+
+The subsequent combined-capture smoke test collects 246 presents and ten
+ADLX polls and exits cleanly (`test-results/gpu-telemetry-capture-smoke`).
+It includes startup/scene changes and is excluded from FPS comparisons.
+After the user confirms the foreground comparison scene, the 30-second run
+with detailed d4r stages/boundary timestamps disabled records **64.661 FPS**
+over 1935 presents. ADLX's sixty polls report mean usage **93.183%**, core
+clock **3124.667 MHz**, board power **316.717 W**, temperature 57 C and hotspot
+82.9 C. Mean PresentMon GPU busy/wait is 14.551/0.800 ms. All presents retain
+Independent Flip / SyncInterval 0. This records high device-wide driver usage
+in this run; the user identified the earlier 63% reading as Task Manager.
+It is not the same measurement as ADLX device-wide usage. Do not infer a physical CPU
+limit, isolated shader occupancy or a FSR4 speed comparison. Query overhead
+is median 0.094 ms per 500 ms poll, with a roughly 12 ms first query. Results:
+`test-results/silent-hill2-k-telemetry-unprofiled-4k`. The game stability
+summary completes 37187 K frames with zero backend failures, CPU image copies,
+previous-frame outputs or recorded crashes, stopping at its ten-minute bound.
+Remaining K work now prioritizes transformer/output-kernel cost; frame
+scheduling remains measured.
+
+### Rejected packed FP16 accumulator experiment
+
+An isolated `D4R_K_F16_WMMA` enc1 build uses gfx12's documented packed FP16
+C/D intrinsic, retaining the current operand/accumulator lane mapping. It
+removes most conversion instructions (1066 static F16/F32 conversions become
+two) and reduces main-kernel VGPRs from 218 to 201; LDS remains 24576 bytes,
+with zero spills. These are compiler/ISA counts, not GPU time or occupancy.
+The candidate is rejected before moving to another layer: its real replay
+changes 1187603 half codes in the output allocation, max absolute difference
+0.0390625 from the validated baseline. All values are finite. Against the
+current twelve-window NumPy reference, PSNR drops from baseline 93.7527 dB
+to 69.2377 dB; max absolute error rises from 0.0078125 to 0.0390625.
+The original comparison incorrectly selected a pre-normalization-fix saved
+output (78.7702 dB); a fresh replay matches `k-real-strict-dual-reference/enc1`
+exactly and supplies the corrected baseline here. The rejection still holds.
+Two independent PTX windows give 70.4022/70.08 dB. These pass the existing
+coarse reference thresholds but do not satisfy this optimization's baseline
+preservation gate. No game installation or performance claim follows.
+
+A public 64-matrix primitive reproducer isolates the difference to direct
+instruction arithmetic. The packed intrinsic and the layout adapter agree
+bit-for-bit. Direct FP16 output differs from FP32 WMMA rounded once to FP16
+even after one K16 step (1674 of 4096 elements, max absolute 0.00390625).
+After eight steps, 2874 elements differ, max absolute 0.0625. This rules out
+the adapter packing as the source of this fixture's difference; the hardware
+internal accumulation/rounding cause is not established. Production K keeps
+its existing FP32-instruction/FP16-rounding baseline and the experimental flag
+is off in every normal build. Results: `test-results/k-f16-wmma-enc1` and
+`test-results/wmma-f16-arithmetic-compare-fixed`.
+The finished `test-wmma-f16.ps1` repeats the same 64-case result. Rebuilding
+every ordinary K/M object leaves all sixteen byte-identical; all seventeen
+CTest gates pass and enc1 still compiles for gfx1101 (compile-only). Logs:
+`test-results/wmma-f16-script-check` and `test-results/k-f16-baseline-ctest.log`.
+
+```powershell
+.\scripts\windows\test-wmma-f16.ps1
+.\scripts\windows\build-native-k-f16-wmma.ps1 -Layer enc1
+```
+
+The first command compiles and runs the public arithmetic diagnostic without
+NVIDIA inputs. Its success means the reproducer executed correctly, not that
+the two instruction paths are equivalent; JSON retains `baselineEquivalent`
+and `gameOptimizationAccepted`. The second compiles the rejected experiment
+in a separate directory and generates no override manifest. Intrinsic API:
+[Clang gfx12 FP16 WMMA](https://clang.llvm.org/docs/AMDGPUBuiltinReference.html#builtin-amdgcn-wmma-f16-16x16x16-f16-w32-gfx12).
+
+### Controlled native replay timings
+
+`native_replay_probe` now supports `--benchmark-timing events|dispatch` and
+`--benchmark-batch 1..256`. Dispatch mode uses the documented
+`hipExtModuleLaunchKernel` start/stop events, with work-item dimensions derived
+from each module's launch metadata and flags zero. It does not change wave
+order or arithmetic. Control/candidate can have different native block/grid
+metadata; each launch uses its own geometry. The default remains event markers.
+
+Each AB/BA sample restores captured inputs outside timing, submits a series,
+waits for its end event, and logs both the event interval and independent host
+launch-to-completion interval divided by launch count. These are isolated
+diagnostics: batch intervals include dispatch/queue gaps and are not exclusive
+instruction execution times, frame latency, or game FPS. Zero, negative,
+nonfinite or event intervals exceeding the enclosing host interval are retained
+as `D4R_REPLAY_PROFILE_INVALID` and excluded. Reports keep timing sources,
+batch counts and log files separate, retaining host statistics and invalid
+samples; no partially valid pair is accepted by the benchmark runner.
+
+The new runner first executes fresh ordinary control/candidate replays and
+compares every allocation's SHA256 before timing. It stops at any mismatch,
+then checks the control output again after every benchmark. A successful
+timing run does not replace the independent NumPy/PTX correctness gates.
+Captured weights/IR and GPU outputs remain private.
+
+```powershell
+.\scripts\windows\benchmark-native-replay.ps1 -Module "$PWD\build\native-k-gfx1201\dltss_pwin_enc1_layer.hsaco" -Candidate "$PWD\build\native-k-gfx1201\dltss_pwin_enc1_layer.hsaco" -FixtureDirectory "$PWD\test-results\ngx-k-fp16-fenced-capture\replay\replay-000001-dltss_pwin_enc1_layer"
+```
+
+The same-module enc1 control has all exact allocations and 32 valid pairs per
+mode. Median per-launch times at the captured 512x288 workload are 0.054850 ms
+with separate single-launch events and 0.089700 ms with single-launch dispatch
+events. At batch 64 they converge to 0.048213/0.048017 ms. Thus dispatch events
+alone do not remove timing overhead; use the batch/host cross-check. All eleven
+K same-module controls pass sixteen pairs at batch 64 in both modes, including
+dec4. This does not fix or explain the previously recorded negative ZLUDA
+timestamps. Results: `test-results/k-replay-timing-methods` and
+`test-results/k-all-layers-batch-profile`.
+
+One-frame standalone K/4K HDR captures provide actual enc0/enc1/dec0 inputs.
+Each harness run uses the eleven validated native layers and private output
+tail, passes the finite-output scan and completes without network fallback. At this
+synthetic resolution enc1 uses a 61x35 grid; this workload is distinct from
+the game's 2259x1271 input. Experiments retain F32 WMMA instructions and strict
+FP16 rounding. `build-native-k-experiment.ps1` builds separate objects and no
+override manifest; no experimental object is installed by the game runner.
+
+CU/WGP and non-temporal load/store/both on enc1 preserve every allocation but
+do not improve its paired 4K timings. Position-only token tiling also preserves
+outputs: enc1 with two tiles and shared V spills four VGPRs and is about 9%
+slower; one-tile shared V has no measured gain. The two-tile shared-V enc0 run
+initially has a roughly 4% lower median paired ratio amid scheduling variance.
+A repeat with 64 AB/BA pairs at batch 64 gives control/candidate medians
+0.297060/0.282559 ms (events) and 0.299988/0.285011 ms (dispatch), with median
+paired ratios 0.950863/0.952240. A 512x288 replay independently gives ratios
+0.950396/0.952582. Both tested dec0 shared-V variants are slower or indistinguishable.
+
+Enc0 now selects shared V for the gfx12 strict baseline, preserving the existing
+two-token tiles, F32 WMMA and FP16 rounding. Gfx11 and arithmetic experiments
+retain their prior selection. `D4R_K_PRIVATE_V` restores the previous enc0 for
+comparison; the build helper exposes `-PrivateValues`. The exact CMake-produced
+object also passes a fresh 4K replay and 32 paired batch-64 samples, with ratios
+0.955418/0.948494. Its ELF hash differs from the experimental object; `.text`
+and `.rodata` match exactly, and numerical validation is repeated on the actual
+object. The other fifteen ordinary K/M objects remain byte-identical.
+Gfx1101 enc0/enc1 compile-only controls retain identical code and constant
+sections to their original sources; no RDNA3 hardware execution is claimed.
+
+Full K controls/candidates complete sixteen 4K frames, and twelve more with
+the game's 2259x1271 input and 3840x2160 output. Every compared RGB half code
+matches, all RGBA scans are finite. Results: `test-results/k-enc0-shared-full-4k`,
+`k-enc0-shared-full-game-input`, `k-4k-enc0-pos2-shared-repeat`,
+`k-enc0-pos2-shared-small` and `k-enc0-default-shared-4k`. The saving is about
+0.015 ms for enc0 in the isolated 4K replay, not 5% application FPS.
+
+The separate `D4R_K_PACKED_ACC` experiment stores already-rounded accumulators
+as half vectors between steps, widening for each unchanged F32 WMMA and
+rounding its F32 output back to half. The ordinary `acc8v` alias remains F32.
+Enc0/enc1/dec0 4K replays match every allocation exactly. Enc1 main VGPRs fall
+218 -> 195, LDS remains 24576 bytes and spills stay zero, but paired GPU time
+does not improve; enc0 is about 4% slower and dec0 about 1% slower. Combining
+packed storage with enc1 two-tile shared V is about 13% slower. The flag remains
+off. Smaller register counts alone are not evidence of an optimization.
+Raw results are under `test-results/k-4k-*-packed-acc` and
+`test-results/k-4k-enc1-pos2-shared-packed`.
+
+A direct recompilation of the private output tail's optimized LLVM IR with
+TheRock Clang 24 fails in instruction selection with `unsupported library
+call operation` (driver exit 1, backend exit 70, exception 0xE0000046). The generated crash
+reproducer/log are retained locally; strict FP is not removed to work around
+this. The working LLVM 22 output object remains selected. The HDR tail's
+metadata is wave32, 133 VGPRs, 6912 LDS bytes and no spills; LDR uses 128 VGPRs
+with the same LDS and no spills. These are static resource counts, not actual
+occupancy. Compiler scheduling hints are documented in the
+[LLVM AMDGPU backend guide](https://llvm.org/docs/AMDGPUUsage.html#llvm-ir-attributes).
+
+### Private output-tail WGP experiment
+
+ZLUDA source `fb0adc8714f57647320f0601533ec50331e378b0`, patch 0018, adds
+opt-in `D4R_ZLUDA_WGP=1`. It changes only CU/WGP placement for gfx11/gfx12,
+preserving wave size and arithmetic. The ordinary runtime stays in CU mode.
+The offline texture builder accepts `-ShaderMode wgp` and verifies `-cumode`
+on the emitted kernel before accepting the object. The compiled output-tail
+objects carry this mode independently of the runtime's environment variable.
+These NVIDIA-derived objects remain private; the public package excludes them.
+
+The matched K/4K comparison uses identical public network objects and the
+existing validated CU output kernels as control. Both HDR and LDR complete
+eight frames per variant; repeating with candidate-first order completes
+sixteen frames per variant. All 96 control/candidate frames are finite, and
+all 48 candidate RGB outputs exactly match their fresh controls. Every frame
+has a native output-tail hit and a valid serializing event measurement.
+
+| Output-tail median, ms | CU, first run | WGP, first run | CU, reverse order | WGP, reverse order |
+| --- | ---: | ---: | ---: | ---: |
+| LDR | 1.864650 | 1.703100 | 1.840260 | 1.687500 |
+| HDR | 2.012301 | 1.883395 | 2.016020 | 1.869250 |
+
+These are separate-process serializing diagnostic measurements, not paired
+resident-module timings or game FPS. Unchanged network kernels also vary
+between processes. The repeat indicates a candidate worth testing in the
+game; it does not establish a frame-rate improvement. Results:
+`test-results/k-output-wgp-reference-4k-clean-env` and
+`k-output-wgp-reference-4k-reverse`.
+The game-sized WGP async burst/recreate gate completes twelve frames, all
+finite; all six async RGB outputs match fresh sync controls exactly, with
+no CPU image copy or aged output (`k-output-wgp-async-game-input`).
+The exact CMake shared-V enc0 and WGP output tails together also pass twelve
+game-sized async/burst/recreation frames, with all six async RGB images exact
+(`k-enc0-shared-wgp-async-game-input`). Default selection of private output
+objects remains CU until a game comparison establishes the candidate's effect.
+
+### Combined K game check
+
+The private WGP outputs are rebuilt from clean ZLUDA source `fb0adc8`; both
+object hashes match the earlier validated experimental objects. A final
+2259x1271 -> 3840x2160 comparison completes twelve finite control/candidate
+frames, all six candidate RGB outputs exact, with all expected native hits and
+valid timings (`k-output-wgp-clean-source-final-4k`). This supplies clean build
+provenance without changing the tested binary identities.
+
+The subsequent Silent Hill 2 game check combines the exact CMake shared-V enc0
+and those private WGP outputs. Package source is clean `68b551b`; the runtime
+remains the validated `67127dd` ZLUDA build with its warm cache, while the
+offline output objects carry WGP placement. DLSS is the locally provided
+310.9.1.0 DLL. Async interop and batched GPU inputs are enabled; debugger,
+serializing/deferred kernel profiling, detailed stage/boundary timestamps and
+output scans are disabled.
+
+After the user confirms the stationary foreground comparison scene, thirty
+seconds capture 1954 presents: **65.250 FPS**, mean/median/p95 frame intervals
+15.326/15.318/16.306 ms. Every present uses Hardware Independent Flip with
+SyncInterval 0. PresentMon mean GPU busy/wait is 14.403/0.807 ms. Sixty unique
+ADLX polls record **93.500%** mean device usage, **3118.400 MHz** core,
+2505 MHz VRAM and **318.817 W** board power, with 57 C temperature and 82.9 C
+hotspot. Median telemetry query time is 0.083 ms per 500 ms poll.
+
+The preceding accepted scene capture was 64.661 FPS: the new result is only
+0.589 FPS higher, about 0.91%, with mean frame interval 0.139 ms shorter.
+This is one historical control and one candidate capture, without a fresh
+repeated game A/B. It does not establish a reproducible gain or isolate enc0
+from output placement. WGP remains an optional experiment, and the overall
+K performance gate stays open.
+
+The full bounded run completes **35664 K frames** and **427968 native
+launches**, including feature recreation and color-format reimports. There
+are zero backend errors, CPU image copies, previous-frame outputs or recorded
+crashes. `diagnostic_timeout` denotes the intentional ten-minute stop.
+Numerical game scans are off, so the game's zero reported nonfinite count is
+not a NaN/Inf validation result; use the separate finite/exact-frame gates.
+Raw capture, environment, package identities and summary remain in
+`test-results/silent-hill2-k-vshare-wgp-4k` and its diagnostic ZIP.
+
+```powershell
+.\scripts\windows\build-zluda-windows.ps1 -InstallRoot "$PWD\dist\zluda-windows-wgp-experiment"
+.\scripts\windows\build-native-texture.ps1 -DlssDll "$PWD\nvngx_dlss.dll" -ZludaRoot "$PWD\dist\zluda-windows-wgp-experiment" -ShaderMode wgp -OutputDirectory "$PWD\build\private-textures-wgp-gfx1201"
+.\scripts\windows\build-native-texture.ps1 -DlssDll "$PWD\nvngx_dlss.dll" -ZludaRoot "$PWD\dist\zluda-windows-wgp-experiment" -ShaderMode wgp -Kernel hiluma_engine_output_depthreg_mvhi_ldr_max_v2_rel -OutputDirectory "$PWD\build\private-textures-wgp-gfx1201"
+.\scripts\windows\test-native-texture.ps1 -TextureRoot "$PWD\build\private-textures-wgp-gfx1201" -ControlTextureRoot "$PWD\build\private-textures-gfx1201" -ZludaRoot "$PWD\dist\zluda-windows-deferred-profile" -OutputResolution 3840x2160
+```
+
+The compiler placement unit passes, all seventeen hardware/software CTest gates
+pass on the clean source build with ordinary CU defaults, and the six ZLUDA
+gates also pass with WGP explicitly enabled. All seventeen patches (0002..0018)
+apply to the clean pinned base `ee2f25a`. The numerical benchmark's rejected
+F16 candidate stops after its two ordinary reference replays with differing
+output and no timing samples (`k-replay-rejected-f16-gate-fixed`).
+
+### Diagnostic environment and input dimensions
+
+Some PowerShell/.NET hosts preserve removed process variables as empty strings.
+Presence-based Rust diagnostic flags then select deferred profiling, while
+empty codegen values can disable WMMA. The probe/game child environments now
+omit empty `D4R_` keys; the probe restores codegen defaults for null or empty
+values. Disabled WGP is also omitted so older runtimes keep their warm cache.
+The texture test requires valid timing records instead of silently accepting
+a profiling-free comparison. The initial candidate attempt times out during
+NGX initialization with no accepted frame; later pre-fix comparisons have
+correct RGB but no accepted GPU timings. Their logs remain in
+`k-output-wgp-reference-small`, `k-output-wgp-reference-small-fixed` and
+`k-output-wgp-reference-4k-fixed`; they are excluded from the table above.
+
+The D3D12 harness now supports `--ngx-input-resolution WIDTHxHEIGHT`, exposed
+as `-NgxInputResolution` in the probe runner and `-InputResolution` in the
+texture/async gates. Output defaults and limits remain unchanged. This allows
+the game's non-aligned input dimensions without inventing a larger output.
+An initial attempt using 4518x2542 output is rejected by the harness's existing
+range guard before GPU initialization; it is not a GPU or enc0 failure.
+
+### Rejected K input-rounding overrides
+
+The remaining translated K input is about 0.34-0.40 ms in the earlier
+game-sized standalone profile. The private builder now exposes the existing
+surface-store/rounding recipe for both tested input variants. These inputs
+have **zero surface stores**: the actual change replaces eight round-half-away
+idioms with the existing recipe, avoiding constrained arithmetic lowering.
+It is not a native surface-store saving. Build metadata records the recipe's
+counts and refuses a no-op override.
+
+CU and WGP input objects are built from the same clean `fb0adc8` ZLUDA source.
+Both retain accuracy mode and wave32; native FP8 remains disabled. The full
+pipeline control and candidate share all thirteen other code objects,
+including the same private WGP output tails. Only the two input overrides
+are added. Four frames per variant at 512x288, then eight per variant at
+2259x1271 -> 3840x2160 in CU mode, then eight in WGP mode with candidate-first
+order complete **80 finite control/candidate frames**. All forty candidate
+RGB images match exactly. Every expected input launch and valid serializing
+timing is checked; raw logs and module SHA256 values are retained.
+
+| Input median, ms | Translated, CU test | Native CU | Translated, WGP test | Native WGP |
+| --- | ---: | ---: | ---: | ---: |
+| LDR / regular depth / high-resolution MV | 0.350050 | 0.359425 | 0.351000 | 0.358800 |
+| HDR / inverted depth / low-resolution MV | 0.512300 | 0.556350 | 0.412650 | 0.552100 |
+
+These are separate-process diagnostic measurements with eight samples each;
+other unchanged kernels also vary between processes. Neither input candidate
+shows a saving. Both are rejected for game installation and default packaging;
+the validated game configuration keeps translated input. Results:
+`test-results/k-input-native-stores-small` (initial filename; no stores were
+replaced), `k-input-rounding-cu-game-input`,
+`k-input-rounding-wgp-game-input-reverse` and
+`k-input-rounding-experiment-summary.json`.
+
+The comparison script's `-KernelStage input` selects the input hit/timing gate.
+`-CommonTextureRoot` holds output objects identical in both processes; staged
+object hashes are recorded. The ordinary output gate now accepts a translated
+control when its object is absent, while still requiring a native candidate.
+Rebuilding the two original WGP output objects preserves their SHA256 values;
+the default translated-output comparison also passes four finite frames and
+two exact candidate RGB images
+(`k-output-recipe-translated-control-regression`). Input objects remain private
+and are excluded by the game's existing output-only installation allowlist.
+
+Reproduce the WGP experiment with locally built, validated output tails:
+
+```powershell
+foreach ($kernel in @('hiluma_engine_input_depthinv_mvlo_hdr_v2_rel', 'hiluma_engine_input_depthreg_mvhi_ldr_v2_rel')) {
+    .\scripts\windows\build-native-texture.ps1 -DlssDll "$PWD\nvngx_dlss.dll" -ZludaRoot "$PWD\dist\zluda-windows-wgp-experiment" -ShaderMode wgp -Kernel $kernel -OutputDirectory "$PWD\build\private-input-textures-wgp-gfx1201"
+}
+.\scripts\windows\test-native-texture.ps1 -KernelStage input -TextureRoot "$PWD\build\private-input-textures-wgp-gfx1201" -CommonTextureRoot "$PWD\build\private-textures-wgp-gfx1201" -ZludaRoot "$PWD\dist\zluda-windows-deferred-profile" -InputResolution 2259x1271 -OutputResolution 3840x2160 -Iterations 8 -CandidateFirst -OutputDirectory "$PWD\test-results\k-input-rounding-wgp-retest"
+```
+
+Further game coverage (HIP kernel profiling disabled, GPU output checks enabled):
+M at 1920x1080 completes 4833 frames, all finite. K at 3840x2160 completes
+4685 frames, all finite. Neither has a backend failure, CPU image copy or an
+aged-frame fallback. Their mean interop/NGX CPU stages total about 13.6 and
+10.1 ms respectively; these are different scenes, not a K/M comparison.
+
+The no-debugger K/4K run completes 5774 frames, with 5774 finite output scans
+and 63514 native transformer launches. The user reports 38-42 FPS. Additional
+CPU measurements exclude replay/publication as the main cause of low FPS:
+
+| CPU measurement | Mean, ms | Median, ms |
+| --- | ---: | ---: |
+| Command split setup | 0.284 | 0.275 |
+| State replay within split setup | 0.025 | 0.023 |
+| Submitted texture state publication | 0.029 | 0.029 |
+| Consumer suffix completion | 0.405 | 0.409 |
+| NGX recording interval | 27.474 | 28.466 |
+
+Recording intervals are between NGX recording calls on the same thread, not
+DXGI Present times. The interval includes rendering and application scheduling.
+A second K/4K run with the attached debugger completes 3567 frames without
+failure, with median recording interval 30.091 ms. The runs include different
+menu/game states; this does not establish a precise debugger FPS speedup.
+Its sparse debugger events also rule out a per-kernel OutputDebugString storm.
+An earlier control that stayed on the startup screen completed zero DLSS frames
+and is excluded. Normal game launches now omit the attached debugger; crash
+diagnostics remain available with `-CaptureExceptions`.
+
+The 2961-frame 4K K profile identifies the translated output tail as its largest
+kernel: 4.401670 ms mean GPU time, versus about 2.875 ms for all eleven native
+transformer layers combined. Ported upstream's texture-store recipe to native
+Windows. It retains accuracy mode, wave32, FP16 subnormals and f16 reference
+accumulation; native FP8 remains disabled.
+
+Both output variants execute on every checked frame and match the previous
+RGB output bit-exactly: eight consecutive 512x288 frames per variant, then
+three consecutive 3840x2160 frames per variant. All RGBA components are finite.
+Identical synthetic inputs and public NGX flags give these 4K event times
+(three samples each; host initialization and readback are outside the event):
+
+| K output variant | Translated mean, ms | Native stores mean, ms |
+| --- | ---: | ---: |
+| LDR, regular depth, high-resolution MV | 2.907823 | 1.803233 |
+| HDR, inverted depth, low-resolution MV | 2.978547 | 2.088347 |
+
+A subsequent game run executes 6221 frames with the native HDR output tail,
+zero backend failures and mean tail GPU time 1.801918 ms. The earlier game
+profile's 4.401670 ms is from a different scene/scheduling state; use the
+identical-input table for the controlled comparison, not an inferred FPS
+multiplier. This profiled game run did not enable the NaN scan.
+
+Reproduce the private texture build and full-frame comparisons:
+
+```powershell
+.\scripts\windows\build-native-texture.ps1 -DlssDll "$PWD\nvngx_dlss.dll"
+.\scripts\windows\build-native-texture.ps1 -DlssDll "$PWD\nvngx_dlss.dll" -Kernel hiluma_engine_output_depthreg_mvhi_ldr_max_v2_rel
+.\scripts\windows\test-native-texture.ps1 -OutputResolution 3840x2160 -Iterations 3
+```
+
+These objects contain code derived from the locally supplied NVIDIA PTX. They
+stay in ignored local directories and are excluded from the public package.
+The installer accepts them with `-LocalTextureKernels` only after validation,
+checking the exact DLL identity, object and manifest hashes. M retains its
+independently validated FP16-equivalent baseline.
+
+The following no-debugger K/4K run completes 9982 frames and 9982 finite GPU
+scans. Kernel event profiling is disabled; the validated private output tail
+executes natively. The user reports 43-47 FPS. Mean NGX recording interval is
+21.867 ms. No backend failure, CPU image copy or previous-frame output occurs.
+
+Random one-in-64 hook samples then identify contention in the shared routing
+table used by every intercepted D3D12 command. Per-thread weak lookup caches
+now bypass that table on repeated calls to a list. Table mutations invalidate
+cache generations; Reset/address reuse cannot route to a previous suffix, and
+thread caches do not retain game resources. The per-list and submission locks
+remain. A GPU regression resets and re-splits the exact same list with changed
+root constants twice per iteration, checking both prefix and suffix results.
+
+| Sampled command-hook access | Shared table | Per-thread weak cache |
+| --- | ---: | ---: |
+| Busiest recording thread, mean us/call | 0.203 | 0.066 |
+| Estimated access + capture across threads, ms/s | 977.528 | 233.606 |
+
+The latter estimate includes lock waits summed across concurrently running
+threads, not CPU execution time or serial frame latency. The two game runs
+have different thread populations (31 versus 29); there is no identical frame
+trace. Generated forwarding methods have separate driver/capture markers;
+special-case hooks contribute access samples but lack those body markers.
+
+With the cache, 4770 complete K/4K frames and finite GPU scans pass, with zero
+backend failures, CPU image copies or previous-frame output. Median NGX
+recording interval is 19.473 ms. The user reports 49-51 FPS and 53% GPU usage
+in the previously measured scene. These user readings are separate from the
+sampled hook estimates and do not establish isolated WMMA utilization.
+All sixteen CTest gates pass, including 64 same-object Reset/split checks in
+each physical command-backend test and the software indirect-root regression.
+Use `-ProfileCommandHooks -ProfileStages` to collect samples; the sampler is
+disabled for ordinary play.
+
+Native M FP8 was subsequently compiled and tested on this gfx1201. ISA confirms
+`v_wmma_f32_16x16x16_fp8_fp8`, with packed e4m3 weight images; exact FP16
+attention/PV remains. All logical outputs and merges in forty recorded launches
+match the previously NumPy-validated FP16 baseline byte-for-byte. Full DLSS RGB
+also matches exactly: four 512x288 LDR frames and four 3840x2160 HDR frames,
+all RGBA finite. This establishes correctness for those fixtures, not a speedup.
+
+The original software operand packing makes the FP8 network slower in the
+four-frame 4K test: sum of five main-kernel event means (tube weighted six times)
+is 27.789640 ms versus FP16's 23.550875 ms. A paired in-process replay confirms
+the regression without relying solely on separate process timings. Both modules
+and prepared weights remain resident, 512 launches warm the GPU, then sixty-four
+AB/BA pairs time the same restored input using HIP events. Diagnostic CPU input
+restoration is outside the timed event and is unrelated to game VRAM interop.
+
+Added opt-in `D4R_FP8_HW_PACK`: native packed conversion of already quantised
+operands replaces software exponent/subnormal reconstruction. It preserves all
+254 finite OCP e4m3 encodings, including signed zero, in an exhaustive GPU check.
+All forty recorded launches still match exactly. Four complete 4K HDR frames
+also match FP16 RGB exactly with finite RGBA. ISA confirms both packed converts
+and FP8 WMMA. The baseline build's sixteen objects remain byte-identical.
+
+| Paired replay median, ms | FP16 (software-packing test) | FP8 software packing | FP16 (hardware-packing test) | FP8 hardware packing |
+| --- | ---: | ---: | ---: | ---: |
+| enc1 | 0.175450 | 0.217050 | 0.175100 | 0.177700 |
+| enc2 | 0.141350 | 0.164550 | 0.132550 | 0.131550 |
+| enc3 tube | 0.108000 | 0.112000 | 0.107600 | 0.099850 |
+| dec2 | 0.129900 | 0.146000 | 0.143250 | 0.140850 |
+| dec1 | 0.169650 | 0.194450 | 0.154250 | 0.156550 |
+
+These are two paired tests on the captured 512x288 workload. Medians avoid large
+isolated scheduling outliers; raw per-pair ratios are retained. They identify a
+substantial cost in software packing but do not establish an overall FPS gain.
+The separately run four-frame 4K hardware-packing network mean is 24.603463 ms;
+it still does not beat the measured FP16 total. Default packaging retains FP16.
+Hardware counters for bandwidth or WMMA utilization were not measured.
+
+Reproduce the isolated build, encoding/replay checks and paired timings using
+the existing private validated captures; no source editing is required:
+
+```powershell
+.\scripts\windows\build-native-m-fp8.ps1 -DlssDll "$PWD\nvngx_dlss.dll" -HardwarePacking
+.\scripts\windows\test-native-m-fp8.ps1 -ModuleDirectory "$PWD\build\native-m-fp8-hardware-pack" -CaptureDirectory "$PWD\test-results\ngx-m-exact-pv-capture\captures" -BaselineValidation "$PWD\test-results\m-native-exact-pv-temporal-reference\summary.json" -Benchmark
+```
+
+Omit `-HardwarePacking` to compile the original FP8 experiment. The replay
+validator stops at the first mismatch, retains GPU stdout/stderr/exit code and
+hashes every compared logical output. `profile_report.py` accepts replay logs
+and reports per-pair GPU time and candidate/control ratios. This experiment is
+not installed by the game runner or substituted silently for the baseline.
+The conversion builtin is listed in the official
+[Clang AMDGPU builtin reference](https://clang.llvm.org/docs/AMDGPUBuiltinReference.html#builtin-amdgcn-cvt-pk-fp8-f32).
+
+References: [HIP events](https://rocmdocs.amd.com/projects/HIP/en/develop/doxygen/html/group___event.html),
+[HIP occupancy API](https://rocm.docs.amd.com/projects/HIP/en/latest/doxygen/html/group___occupancy.html).

docs/windows-quick-test.txt

@@ -0,0 +1,62 @@
+D4R WINDOWS QUICK TEST -- READ THIS FIRST
+
+This is an EXPERIMENTAL Windows 11 D3D12 build for RDNA3 / RDNA3.5 / RDNA4.
+Only RX 9070 XT has been tested here. Other cards may fail.
+The package detects the real GPU automatically. Do not rename any DLLs.
+
+1. EXTRACT THE WHOLE ZIP to a normal writable folder, e.g. Desktop\d4r-test.
+   Do not run it inside the ZIP. Do not copy files into the game manually.
+   Already installed an older test? Close the game and run RESTORE-GAME.cmd
+   from that old package first, then extract this version to a new folder.
+
+2. CLOSE YOUR GAME. If your distributor included the validated NVIDIA DLL pair,
+   it is selected automatically; you only need to choose the game executable.
+   Otherwise have these TWO ORIGINAL NVIDIA files ready:
+   _nvngx.dll       version 32.0.16.1714
+   nvngx_dlss.dll   version 310.9.1
+   The xdfnx-dev public test ZIP does not include them. Other versions are rejected.
+   The small _nvngx.dll inside this package is d4r, NOT the original NVIDIA file.
+
+3. DOUBLE-CLICK START-K.cmd. Pick the actual game .exe when asked.
+   If asked, pick your two NVIDIA DLLs. These choices are remembered for the next run.
+   Next time, press Enter for the same game, or C to choose another.
+   If Steam/Epic is needed, keep it open. Choose a D3D12 game without anti-cheat.
+   If a launcher opens, type C and choose the real game executable next time.
+
+4. IN THE GAME, select DLSS if available, otherwise FSR/XeSS for OptiScaler.
+   Leave frame generation OFF. First launch can compile for several minutes.
+   Keep the console open. Play for 30 seconds, check the image, then EXIT THE GAME.
+   START-M.cmd tests DLSS 4.5 preset M; START-K.cmd tests DLSS 4 preset K.
+
+5. SEND THE SINGLE ZIP shown as "SEND THIS ONE FILE" in the console.
+   It is also in the results folder. Tell us your GPU, game, K/M and image result:
+   "correct image", "black screen", "crash" or "visual corruption".
+   A passing backend log does not automatically prove the image is correct.
+   Logs can contain local paths. Review them before posting them publicly.
+
+TO UNINSTALL: close the game and double-click RESTORE-GAME.cmd.
+Original replaced files are backed up and restored; changed files are preserved.
+Restore the previous game BEFORE choosing a different game for the next test.
+Always launch tests through START-K/M.cmd, not the usual game shortcut.
+
+IF SOMETHING FAILS:
+- Wrong NVIDIA DLL: select the exact versions above on the next run.
+- No supported GPU / HIP failure: send the ZIP; do not spoof the GPU architecture.
+- vkd3d/Wine detected: use the game's original native Windows D3D12 files.
+- Access denied: extract to a writable folder. Do not disable system security.
+- Do not start a second test while the first game is running.
+
+No HIP SDK installation is required; the isolated runtime is included.
+This uses synchronous interop and output checks. No debugger is attached by default.
+Exit codes and loaded DLLs are logged. A debugger is only an explicit developer option.
+Your local DLSS DLL is staged beside the d4r shim automatically.
+It is a correctness diagnostic, NOT an FPS benchmark or an optimized daily-use build.
+Colour, depth, motion and output remain in VRAM in the runtime fast path.
+
+Runtime files are in files/. Cache/settings are created in work/.
+Licenses are in licenses/. Corresponding sources are a SEPARATE release download;
+testers do not need to download or build them. NVIDIA DLLs, when supplied by a
+distributor, keep their separate license and are not part of the GPL source archive.
+
+Report: https://github.com/countervolts/d4r/issues/10
+Source: https://github.com/xdfnx-dev/d4r

kernels/common/hip_device_minimal.h

@@ -0,0 +1,43 @@
+#pragma once
+
+// Device-only Windows HIP build shim. The diagnostic/kernel code objects are
+// compiled with -nogpuinc/-nogpulib; no host HIP or C++ standard library is
+// needed. Definitions below mirror public HIP qualifiers and LLVM AMDGPU
+// work-item/grid builtins. The normal Linux HIP include path is untouched.
+#define __device__ __attribute__((device))
+#define __host__ __attribute__((host))
+#define __global__ __attribute__((global))
+#define __shared__ __attribute__((shared))
+#define __constant__ __attribute__((constant))
+#define __forceinline__ __attribute__((always_inline)) inline
+#define __launch_bounds__(n) __attribute__((amdgpu_flat_work_group_size(1, n)))
+
+struct d4r_device_dim3 { unsigned x, y, z; };
+// Public HIP vector storage ABI used by M's packed global/LDS accesses.
+struct alignas(8) uint2 { unsigned x, y; };
+struct alignas(16) uint4 { unsigned x, y, z, w; };
+static_assert(sizeof(uint2) == 8 && alignof(uint2) == 8, "HIP uint2 ABI");
+static_assert(sizeof(uint4) == 16 && alignof(uint4) == 16, "HIP uint4 ABI");
+__device__ __forceinline__ d4r_device_dim3 d4r_thread_idx() {
+    return {__builtin_amdgcn_workitem_id_x(), __builtin_amdgcn_workitem_id_y(),
+        __builtin_amdgcn_workitem_id_z()};
+}
+__device__ __forceinline__ d4r_device_dim3 d4r_block_idx() {
+    return {__builtin_amdgcn_workgroup_id_x(), __builtin_amdgcn_workgroup_id_y(),
+        __builtin_amdgcn_workgroup_id_z()};
+}
+__device__ __forceinline__ d4r_device_dim3 d4r_grid_dim() {
+    return {__builtin_amdgcn_grid_size_x() / __builtin_amdgcn_workgroup_size_x(),
+        __builtin_amdgcn_grid_size_y() / __builtin_amdgcn_workgroup_size_y(),
+        __builtin_amdgcn_grid_size_z() / __builtin_amdgcn_workgroup_size_z()};
+}
+#define threadIdx d4r_thread_idx()
+#define blockIdx d4r_block_idx()
+#define gridDim d4r_grid_dim()
+__device__ __attribute__((convergent, always_inline)) inline void __syncthreads() {
+    // Match HIP __work_group_barrier: execution rendezvous alone does not
+    // publish LDS stores or prevent loads moving across the barrier.
+    __builtin_amdgcn_fence(__ATOMIC_RELEASE, "workgroup");
+    __builtin_amdgcn_s_barrier();
+    __builtin_amdgcn_fence(__ATOMIC_ACQUIRE, "workgroup");
+}

kernels/common/wave32_exchange.h

@@ -0,0 +1,31 @@
+#pragma once
+#include <stdint.h>
+
+// Windows gfx11 portability workaround informed by realdody/d4r 1897b4a.
+// The reported permlanex16 failure duplicates the even K value into the odd
+// slot. Retain the native gfx11 layout and exchange through per-wave LDS.
+// Other platforms and gfx12 keep their original instruction sequence.
+__attribute__((device, always_inline)) static inline uint32_t d4r_wave32_other_half(uint32_t value)
+{
+#if defined(D4R_WINDOWS_GFX11_LANE_EXCHANGE) && defined(__GFX11__)
+    __attribute__((shared)) volatile uint32_t scratch[512];
+    const uint32_t tid = __builtin_amdgcn_workitem_id_x() + __builtin_amdgcn_workgroup_size_x() *
+        (__builtin_amdgcn_workitem_id_y() + __builtin_amdgcn_workgroup_size_y() * __builtin_amdgcn_workitem_id_z());
+    // All native K/M launch bounds are <=512. Do not silently corrupt LDS if
+    // this helper is later reused by a larger workgroup.
+    if (tid >= 512) __builtin_trap();
+    scratch[tid] = value;
+    __builtin_amdgcn_fence(__ATOMIC_RELEASE, "wavefront");
+    __builtin_amdgcn_wave_barrier();
+    __builtin_amdgcn_fence(__ATOMIC_ACQUIRE, "wavefront");
+    const uint32_t result = scratch[tid ^ 16u];
+    // Protect scratch reuse by the next exchange in this wave. No block-wide
+    // rendezvous: different waves can reach GEMMs in a different order.
+    __builtin_amdgcn_fence(__ATOMIC_RELEASE, "wavefront");
+    __builtin_amdgcn_wave_barrier();
+    __builtin_amdgcn_fence(__ATOMIC_ACQUIRE, "wavefront");
+    return result;
+#else
+    return __builtin_amdgcn_permlanex16(value, value, 0x76543210u, 0xfedcba98u, false, false);
+#endif
+}

kernels/common/wmma_backend.h

@@ -0,0 +1,57 @@
+#pragma once
+#include <stdint.h>
+#include "wave32_exchange.h"
+
+// d4r's gfx11 interface: each lane supplies 16 FP16 K operands. The 8 FP32
+// outputs have logical row 2*i + lane/16 and logical column lane%16.
+// gfx12 consumes only 8 FP16 operands per lane and emits 8 consecutive rows
+// per lane group. Keep the old interface for K/M/texture call sites until their
+// surrounding fragments are ported and validated individually.
+using d4r_wmma_h16 = _Float16 __attribute__((ext_vector_type(16)));
+using d4r_wmma_h8 = _Float16 __attribute__((ext_vector_type(8)));
+using d4r_wmma_f8 = float __attribute__((ext_vector_type(8)));
+
+__attribute__((device, always_inline)) static inline float d4r_wmma_other_half(float value)
+{
+    const uint32_t bits = __builtin_bit_cast(uint32_t, value);
+    const uint32_t swapped = d4r_wave32_other_half(bits);
+    return __builtin_bit_cast(float, swapped);
+}
+
+__attribute__((device, always_inline)) static inline d4r_wmma_f8
+d4r_wmma_legacy_layout(d4r_wmma_h16 a, d4r_wmma_h16 b, d4r_wmma_f8 c)
+{
+#if defined(__gfx1200__) || defined(__gfx1201__)
+    const uint32_t group = __builtin_amdgcn_mbcnt_lo(~0u, 0u) >> 4;
+    d4r_wmma_h8 a12, b12;
+    d4r_wmma_f8 c12;
+    d4r_wmma_f8 remote_c;
+#pragma unroll
+    for (int i = 0; i < 8; ++i)
+        remote_c[i] = d4r_wmma_other_half(c[i]);
+#pragma unroll
+    for (int i = 0; i < 8; ++i) {
+        a12[i] = a[8u * group + i];
+        b12[i] = b[8u * group + i];
+        const uint32_t row = 8u * group + i;
+        const uint32_t old_index = row >> 1;
+        c12[i] = (row & 1u) == group ? c[old_index] : remote_c[old_index];
+    }
+    const d4r_wmma_f8 d12 = __builtin_amdgcn_wmma_f32_16x16x16_f16_w32_gfx12(a12, b12, c12);
+    d4r_wmma_f8 result, remote_d;
+#pragma unroll
+    for (int i = 0; i < 8; ++i)
+        remote_d[i] = d4r_wmma_other_half(d12[i]);
+#pragma unroll
+    for (int i = 0; i < 8; ++i) {
+        const uint32_t row = 2u * i + group;
+        const uint32_t new_index = row & 7u;
+        result[i] = (row >> 3) == group ? d12[new_index] : remote_d[new_index];
+    }
+    return result;
+#elif defined(__GFX11__)
+    return __builtin_amdgcn_wmma_f32_16x16x16_f16_w32(a, b, c);
+#else
+#error "d4r WMMA backend requires a validated gfx11 or gfx12 target"
+#endif
+}

kernels/common/wmma_layout.h

@@ -18,6 +18,7 @@
 // Only clang builtins are used (the texture tails compile with -nogpuinc -nogpulib).
 #pragma once
 #include <stdint.h>
+#include "wave32_exchange.h"
 
 #ifndef D4R_WMMA_LAYOUT
 #if defined(__GFX12__)
@@ -56,7 +57,7 @@ WM_FN uint32_t wm_half()
 // value of the lane with the same index in the other half of the wave
 WM_FN uint32_t wm_other_half(uint32_t v)
 {
-    return __builtin_amdgcn_permlanex16(v, v, 0x76543210u, 0xfedcba98u, false, false);
+    return d4r_wave32_other_half(v);
 }
 WM_FN float wm_other_half_f(float v)
 {
@@ -229,6 +230,20 @@ WM_FN wm_f8v wm_mma(const wm_op& a, const wm_op& b, wm_f8v c)
 {
     return __builtin_amdgcn_wmma_f32_16x16x16_f16_w32_gfx12(__builtin_bit_cast(wm_h8, a), __builtin_bit_cast(wm_h8, b), c);
 }
+#ifdef D4R_K_F16_WMMA
+// Rejected K experiment: direct packed F16 changes the arithmetic on gfx1201.
+// The public WMMA reproducer and enc1 replay are in tools/windows and docs.
+// Experimental gfx12 packed FP16 C/D. K's strict baseline enters each K16
+// step with an already FP16-rounded accumulator. Keep the existing logical
+// eight-row contract; only this instruction/register representation changes.
+WM_FN wm_f8v wm_mma_f16_step(const wm_op& a, const wm_op& b, wm_f8v c)
+{
+    const wm_h8 hc = __builtin_convertvector(c, wm_h8);
+    const wm_h8 hd = __builtin_amdgcn_wmma_f16_16x16x16_f16_w32_gfx12(
+        __builtin_bit_cast(wm_h8, a), __builtin_bit_cast(wm_h8, b), hc);
+    return __builtin_convertvector(hd, wm_f8v);
+}
+#endif
 #else
 WM_FN wm_f8v wm_mma11(const wm_u8v& a, const wm_u8v& b, wm_f8v c)
 {

kernels/k/dltss_pwin_dec0_layer.hip

@@ -1,5 +1,10 @@
 // CU mode: the waves of a window share one L0 cache (1-6% faster here; slower in the wide layers)
 // d4r-build-flags: -mcumode
 #define PWIN_F32ACC
+#ifndef D4R_K_POS_MT
+#define D4R_K_POS_MT 2
+#elif !defined(__GFX12__) || !defined(D4R_K_FP16_BASELINE)
+#error "experimental position token tiling requires gfx12 strict K baseline"
+#endif
 #include "pwin_pos.h"
-POS_DECODER(dltss_pwin_dec0_layer, 2, 32, 64, 40, 48, 2)
+POS_DECODER(dltss_pwin_dec0_layer, 2, 32, 64, 40, 48, D4R_K_POS_MT)

kernels/k/dltss_pwin_enc0_layer.hip

@@ -1,5 +1,19 @@
 // CU mode: the waves of a window share one L0 cache (1-6% faster here; slower in the wide layers)
 // d4r-build-flags: -mcumode
 #define PWIN_F32ACC
+#ifndef D4R_K_POS_MT
+#define D4R_K_POS_MT 2
+#elif !defined(__GFX12__) || !defined(D4R_K_FP16_BASELINE)
+#error "experimental position token tiling requires gfx12 strict K baseline"
+#endif
+// Reuse V across the window's waves. Paired gfx1201 replays retain every half
+// code and reduce enc0 time by about 5%; gfx11 and arithmetic experiments keep
+// their previous path. D4R_K_PRIVATE_V supplies the original A/B control.
+#if defined(__GFX12__) && defined(D4R_K_FP16_BASELINE) && !defined(D4R_K_PRIVATE_V) && \
+    !defined(D4R_K_PACKED_ACC) && !defined(D4R_K_F16_WMMA)
+#ifndef POS_VSHARE
+#define POS_VSHARE
+#endif
+#endif
 #include "pwin_pos.h"
-POS_ENCODER(dltss_pwin_enc0_layer, 2, 32, 64, 16, 2)
+POS_ENCODER(dltss_pwin_enc0_layer, 2, 32, 64, 16, D4R_K_POS_MT)

kernels/k/dltss_pwin_enc1_layer.hip

@@ -1,5 +1,16 @@
 // CU mode: the waves of a window share one L0 cache (1-6% faster here; slower in the wide layers)
 // d4r-build-flags: -mcumode
 #define PWIN_F32ACC
+#ifdef D4R_K_ENC1_POS_MT
+#if !defined(__GFX12__) || !defined(D4R_K_FP16_BASELINE)
+#error "experimental enc1 token tiling requires gfx12 strict K baseline"
+#endif
+#if D4R_K_ENC1_POS_MT != 1 && D4R_K_ENC1_POS_MT != 2 && D4R_K_ENC1_POS_MT != 4
+#error "enc1 token tiles per wave must be 1, 2 or 4"
+#endif
+#include "pwin_pos.h"
+POS_ENCODER(dltss_pwin_enc1_layer, 2, 64, 64, 0, D4R_K_ENC1_POS_MT)
+#else
 #include "pwin_layer.h"
 PWIN_ENCODER_POS(dltss_pwin_enc1_layer, 2, 64, 64, true)
+#endif

kernels/k/pwin_common.h

@@ -7,7 +7,11 @@
 // output channel wm_acc_row(i) of the 16-channel tile ("D^T"); ../common/wmma_layout.h has the per-target
 // register layouts (gfx11: channel 2i + (l >> 4); gfx12: channel i + 8 (l >> 4)).
 #pragma once
+#ifdef D4R_DEVICE_ONLY_MINIMAL
+#include "../common/hip_device_minimal.h"
+#else
 #include <hip/hip_runtime.h>
+#endif
 #include <stdint.h>
 #include "../common/wmma_layout.h"
 #if defined(D4R_ACCURACY) && defined(PWIN_F32ACC)
@@ -19,6 +23,16 @@ typedef _Float16 half_t;
 typedef _Float16 hv2 __attribute__((ext_vector_type(2)));
 typedef _Float16 h16 __attribute__((ext_vector_type(16)));
 typedef float f8v __attribute__((ext_vector_type(8)));
+#ifdef D4R_K_PACKED_ACC
+#if !defined(__GFX12__) || !defined(D4R_K_FP16_BASELINE) || defined(D4R_K_F16_WMMA)
+#error "packed accumulator storage requires gfx12 strict F32 WMMA baseline"
+#endif
+// Keep already-rounded values packed between steps. Every matrix instruction
+// still uses F32 C/D and rounds once to half afterwards, like the baseline.
+typedef _Float16 acc8v __attribute__((ext_vector_type(8)));
+#else
+typedef f8v acc8v;
+#endif
 typedef uint32_t u8v __attribute__((ext_vector_type(8)));
 typedef uint32_t u4v __attribute__((ext_vector_type(4)));
 
@@ -29,27 +43,86 @@ __device__ __forceinline__ uint32_t lane_id()
 
 typedef wm_op op_t; // WMMA operand: u8v (gfx11) or u4v (gfx12)
 
+// The CUDA fragment reduction rounds products and every tree node to f16.
+// A float sum of the squared halves changes rsqrt and can amplify differences
+// through attention. The strict baseline preserves its channel grouping.
+template <int C>
+__device__ __forceinline__ half_t l2_sum(const half_t* row)
+{
+#ifdef D4R_K_FP16_BASELINE
+    static_assert(C % 32 == 0 && C <= 160, "audited K channel counts");
+    hv2 partial[4];
+#pragma unroll
+    for (int t = 0; t < 4; ++t)
+    {
+        hv2 halves[2];
+#pragma unroll
+        for (int parity = 0; parity < 2; ++parity)
+        {
+            hv2 pairs[C / 32];
+#pragma unroll
+            for (int group = 0; group < C / 32; ++group)
+            {
+                const hv2 a = *(const hv2*)(row + 2 * t + 8 * parity + 32 * group);
+                const hv2 b = *(const hv2*)(row + 2 * t + 8 * parity + 32 * group + 16);
+                pairs[group] = (a * a) + (b * b);
+            }
+            hv2 value = pairs[0];
+            if constexpr (C >= 64) value = value + pairs[1];
+            if constexpr (C == 96) value = value + pairs[2];
+            if constexpr (C >= 128) value = value + (pairs[2] + pairs[3]);
+            if constexpr (C == 160) value = value + pairs[4];
+            halves[parity] = value;
+        }
+        partial[t] = halves[0] + halves[1];
+    }
+    const hv2 sum = (partial[0] + partial[1]) + (partial[2] + partial[3]);
+    return sum[0] + sum[1];
+#else
+    float sum = 0;
+#pragma unroll
+    for (int c = 0; c < C; ++c) sum += (float)(half_t)(row[c] * row[c]);
+    return (half_t)sum;
+#endif
+}
+
 // one k16 step with the f16 accumulator of NVIDIA's f16 wmma (rounded after the step)
 // PWIN_F32ACC: keep the accumulator in f32 through the chain (rounded to f16 where the values are used)
-__device__ __forceinline__ f8v mma16(const op_t& a, const op_t& b, f8v c)
+__device__ __forceinline__ acc8v mma16(const op_t& a, const op_t& b, acc8v c)
 {
+#ifdef D4R_K_PACKED_ACC
+    const f8v fc = __builtin_convertvector(c, f8v);
+    const f8v d = wm_mma(a, b, fc);
+    return __builtin_convertvector(d, acc8v);
+#elif defined(D4R_K_F16_WMMA)
+#if !defined(__GFX12__) || D4R_WMMA_LAYOUT != 12 || !defined(D4R_K_FP16_BASELINE)
+#error "experimental packed F16 WMMA requires gfx12 native layout and strict K baseline"
+#endif
+    return wm_mma_f16_step(a, b, c);
+#else
     f8v d = wm_mma(a, b, c);
-#ifndef PWIN_F32ACC
+#if !defined(PWIN_F32ACC) || defined(D4R_K_FP16_BASELINE)
 #pragma unroll
     for (int i = 0; i < 8; ++i)
         d[i] = (float)(half_t)d[i];
 #endif
     return d;
+#endif
 }
 
-__device__ __forceinline__ f8v splat8(float v)
+__device__ __forceinline__ acc8v splat8(float v)
 {
-    return (f8v){v, v, v, v, v, v, v, v};
+#ifdef D4R_K_PACKED_ACC
+    const half_t h = (half_t)v;
+    return (acc8v){h, h, h, h, h, h, h, h};
+#else
+    return (acc8v){v, v, v, v, v, v, v, v};
+#endif
 }
 
 __device__ __forceinline__ uint32_t other_half(uint32_t v)
 {
-    return __builtin_amdgcn_permlanex16(v, v, 0x76543210u, 0xfedcba98u, false, false);
+    return wm_other_half(v);
 }
 
 __device__ __forceinline__ uint32_t pack2(half_t lo, half_t hi)
@@ -73,9 +146,14 @@ __device__ __forceinline__ op_t operand_from_dt(const half_t own[8])
     return wm_op_from_acc(own);
 }
 
-__device__ __forceinline__ op_t operand_from_f8(f8v d)
+__device__ __forceinline__ op_t operand_from_f8(acc8v d)
 {
+#ifdef D4R_K_PACKED_ACC
+    const half_t h[8] = {d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7]};
+    return wm_op_from_acc(h);
+#else
     return wm_op_from_f8(d);
+#endif
 }
 
 // element c (0..15) of a row of 16 halves (VALU code; not a WMMA operand)

kernels/k/pwin_layer.h

@@ -163,7 +163,7 @@ __device__ __forceinline__ half_t gelu(half_t x)
 }
 
 // gelu of 8 accumulator values as 4 packed f16 pairs (the same f16 operations as gelu(), element-wise)
-__device__ __forceinline__ void gelu8(const f8v& d, half_t g[8])
+__device__ __forceinline__ void gelu8(const acc8v& d, half_t g[8])
 {
     const hv2 k1 = (hv2)(half_t)__builtin_bit_cast(float, 0x3ED306EBu), k2 = (hv2)(half_t)__builtin_bit_cast(float, 0x3DA60DD6u);
 #pragma unroll
@@ -259,17 +259,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
 
     STAMP(1);
     // ---- L2 norm: h1 = x0 * (rsqrt(sum x0^2) * gamma1) -> hb
-    float ss = 0.0f;
-    for (int kt = 0; kt < KT; ++kt)
-    {
-        const u8v xv = lds_row16(arow + 16 * kt);
-#pragma unroll
-        for (int c = 0; c < 16; ++c)
-        {
-            const half_t v = op_get(xv, c);
-            ss += (float)(half_t)(v * v);
-        }
-    }
+    const half_t ss = l2_sum<C>(arow);
     const half_t r16 = (half_t)__builtin_amdgcn_rsqf((float)(half_t)ss);
     for (int kt = (int)hf; kt < KT; kt += 2)
     {
@@ -293,7 +283,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
         block_sync(); // V of all 64 tokens is computed by every wave from hb
     STAMP(2);
     // ---- attention, one head at a time; the output projection accumulates head by head
-    f8v acc[KT];
+    acc8v acc[KT];
 #pragma unroll
     for (int nt = 0; nt < KT; ++nt)
 {
@@ -320,7 +310,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
 #pragma unroll
             for (int nt = 0; nt < 2; ++nt)
             {
-                f8v d = splat8(0.0f);
+                acc8v d = splat8(0.0f);
                 for (int ks = 0; ks < KT; ++ks)
                     d = mma16(op_lds(&hb[16 * wv + m][16 * ks]), op_img(img, (L::T_QKV + ((h * 3 + 2) * KT + ks) * 2 + nt) * 16 + m), d);
                 op_img_store(&vsh[h][nt][0][0], wv * 16 + m, operand_from_f8(d));
@@ -343,7 +333,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
         {
         op_t qop[2];
         // six independent chains (Q, K, V x 2 n-tiles), each over kt in order
-        f8v dq[6];
+        acc8v dq[6];
 #pragma unroll
         for (int u = 0; u < 6; ++u)
             dq[u] = splat8(0.0f);
@@ -359,7 +349,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
 #pragma unroll
             for (int nt = 0; nt < 2; ++nt)
             {
-                const f8v d = dq[2 * j + nt];
+                const acc8v d = dq[2 * j + nt];
                 if (j == 0)
                     qop[nt] = operand_from_f8(d);
                 else if (j == 1)
@@ -380,7 +370,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
         for (int kt = 0; kt < 4; ++kt)
         {
             const u4v bi = bias[((h * 4 + wv) * 4 + kt) * 32 + l];
-            f8v d;
+            acc8v d;
 #pragma unroll
             for (int i = 0; i < 4; ++i)
             {
@@ -414,7 +404,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
 #pragma unroll
         for (int nt = 0; nt < 2; ++nt)
         {
-            f8v d = splat8(0.0f);
+            acc8v d = splat8(0.0f);
 #pragma unroll
             for (int kt = 0; kt < 4; ++kt)
             {
@@ -472,7 +462,7 @@ __device__ void pwin_core(const PwinParams& p, const u8v* __restrict__ img, cons
 #pragma unroll
         for (int hn = 0; hn < 2; ++hn)
         {
-            f8v d;
+            acc8v d;
 {
 
     half_t vv_[8];
@@ -565,7 +555,7 @@ __device__ void pwin_encoder(const PwinParams& p0, const u8v* __restrict__ img,
 #pragma unroll
             for (int nt = 0; nt < C / 16; ++nt)
             {
-                f8v d;
+                acc8v d;
                 {
                     half_t vv_[8];
                     dvec8(p0.w, 32 * nt, vv_);
@@ -613,7 +603,7 @@ __device__ void pwin_encoder(const PwinParams& p0, const u8v* __restrict__ img,
     const uint8_t* w = p.w;
     for (int vt = wv; vt < L::PMT; vt += 4)
     {
-        f8v d;
+        acc8v d;
 {
 
     half_t vv_[8];
@@ -763,7 +753,7 @@ __device__ void pwin_decoder(const PwinParams& p, const u8v* __restrict__ img, c
         for (int nt = 0; nt < C / 16; ++nt)
         {
             const int gnt = wv * (C / 16) + nt; // expand output column tile
-            f8v d;
+            acc8v d;
 {
 
     half_t vv_[8];
@@ -800,7 +790,7 @@ __device__ void pwin_decoder(const PwinParams& p, const u8v* __restrict__ img, c
 #pragma unroll
         for (int nt = 0; nt < L::NOUTA / 16; ++nt)
         {
-            f8v d;
+            acc8v d;
 {
 
     half_t vv_[8];

kernels/k/pwin_pos.h

@@ -8,6 +8,7 @@ __device__ void pos_core(const PwinParams& p, const u8v* __restrict__ img, const
                          half_t (*act)[L::C], half_t (*hb)[L::C])
 {
     constexpr int C = L::C, KT = L::KT, H = L::H, NW = 4 / MT;
+    static_assert(MT == 1 || MT == 2 || MT == 4, "position token tiles per wave");
     static_assert(L::POS, "position-only attention layers");
     const uint32_t l = lane_id(), m = l & 15, hf = l >> 4;
     const int wv = threadIdx.z;
@@ -19,18 +20,7 @@ __device__ void pos_core(const PwinParams& p, const u8v* __restrict__ img, const
     {
         const half_t* arow = act[16 * (wv * MT + mi) + m];
         half_t* hrow = hb[16 * (wv * MT + mi) + m];
-        float ss = 0.0f;
-#pragma unroll
-        for (int kt = 0; kt < KT; ++kt)
-        {
-            const u8v xv = lds_row16(arow + 16 * kt);
-#pragma unroll
-            for (int c = 0; c < 16; ++c)
-            {
-                const half_t v = op_get(xv, c);
-                ss += (float)(half_t)(v * v);
-            }
-        }
+        const half_t ss = l2_sum<C>(arow);
         const half_t r16 = (half_t)__builtin_amdgcn_rsqf((float)(half_t)ss);
         for (int kt = (int)hf; kt < KT; kt += 2)
         {
@@ -48,7 +38,7 @@ __device__ void pos_core(const PwinParams& p, const u8v* __restrict__ img, const
     STAMP(2);
 
     // ---- attention: O = P V per head (P from the table), output projection accumulated head by head
-    f8v acc[MT][KT];
+    acc8v acc[MT][KT];
 #pragma unroll
     for (int nt = 0; nt < KT; ++nt)
     {
@@ -75,7 +65,7 @@ __device__ void pos_core(const PwinParams& p, const u8v* __restrict__ img, const
             for (int mi = 0; mi < MT; ++mi)
             {
                 const int kt = wv * MT + mi;
-                f8v d = splat8(0.0f);
+                acc8v d = splat8(0.0f);
 #pragma unroll
                 for (int ks = 0; ks < KT; ++ks)
                     d = mma16(op_lds(&hb[16 * kt + m][16 * ks]), op_img(img, (L::T_QKV + ((h * 3 + 2) * KT + ks) * 2 + nt) * 16 + m), d);
@@ -93,7 +83,7 @@ __device__ void pos_core(const PwinParams& p, const u8v* __restrict__ img, const
 #pragma unroll
             for (int kt = 0; kt < 4; ++kt)
             {
-                f8v d = splat8(0.0f);
+                acc8v d = splat8(0.0f);
 #pragma unroll
                 for (int ks = 0; ks < KT; ++ks)
                     d = mma16(op_lds(&hb[16 * kt + m][16 * ks]), op_img(img, (L::T_QKV + ((h * 3 + 2) * KT + ks) * 2 + nt) * 16 + m), d);
@@ -112,7 +102,7 @@ __device__ void pos_core(const PwinParams& p, const u8v* __restrict__ img, const
 #pragma unroll
             for (int nt = 0; nt < 2; ++nt)
             {
-                f8v d = splat8(0.0f);
+                acc8v d = splat8(0.0f);
 #pragma unroll
                 for (int kt = 0; kt < 4; ++kt)
                     d = mma16(vtop[nt][kt], pop[kt], d);
@@ -167,7 +157,7 @@ __device__ void pos_core(const PwinParams& p, const u8v* __restrict__ img, const
         {
             half_t bb[8];
             dvec8(w, L::B1 + 64 * c + 32 * hn, bb);
-            f8v d[MT];
+            acc8v d[MT];
 #pragma unroll
             for (int mi = 0; mi < MT; ++mi)
 #pragma unroll
@@ -242,7 +232,7 @@ __device__ void pos_encoder(const PwinParams& p0, const u8v* __restrict__ img, c
             {
                 half_t vv[8];
                 dvec8(p0.w, 32 * nt, vv);
-                f8v d;
+                acc8v d;
 #pragma unroll
                 for (int i = 0; i < 8; ++i)
                     d[i] = (float)vv[i];
@@ -289,7 +279,7 @@ __device__ void pos_encoder(const PwinParams& p0, const u8v* __restrict__ img, c
     {
         half_t vv[8];
         dvec8(p.w, L::PMB + 32 * vt, vv);
-        f8v d;
+        acc8v d;
 #pragma unroll
         for (int i = 0; i < 8; ++i)
             d[i] = (float)vv[i];
@@ -333,7 +323,7 @@ __device__ void pos_decoder(const PwinParams& p, const u8v* __restrict__ img, co
                 const int gnt = q * (C / 16) + nt;
                 half_t vv[8];
                 dvec8(p.w, L::EXPB + 32 * gnt, vv);
-                f8v d;
+                acc8v d;
 #pragma unroll
                 for (int i = 0; i < 8; ++i)
                     d[i] = (float)vv[i];
@@ -364,7 +354,7 @@ __device__ void pos_decoder(const PwinParams& p, const u8v* __restrict__ img, co
         {
             half_t vv[8];
             dvec8(q.w, L::HB + 32 * nt, vv);
-            f8v d;
+            acc8v d;
 #pragma unroll
             for (int i = 0; i < 8; ++i)
                 d[i] = (float)vv[i];

kernels/k/pwin_wide.h

@@ -38,17 +38,7 @@ __device__ void wide_core(const PwinParams& p, const u8v* __restrict__ img, cons
     half_t* hrow = hb[tok];
 
     // ---- L2 norm: h1 = x0 * (rsqrt(sum x0^2) * gamma1) -> hb (all groups of a token tile compute the sum)
-    float ss = 0.0f;
-    for (int kt = 0; kt < KT; ++kt)
-    {
-        const u8v xv = lds_row16(arow + 16 * kt);
-#pragma unroll
-        for (int c = 0; c < 16; ++c)
-        {
-            const half_t v = op_get(xv, c);
-            ss += (float)(half_t)(v * v);
-        }
-    }
+    const half_t ss = l2_sum<C>(arow);
     const half_t r16 = (half_t)__builtin_amdgcn_rsqf((float)(half_t)ss);
     for (int kt = 2 * g + (int)hf; kt < KT; kt += 2 * NG)
     {
@@ -78,7 +68,7 @@ __device__ void wide_core(const PwinParams& p, const u8v* __restrict__ img, cons
     block_sync(); // hb complete, R free
 
     // ---- attention: NG heads per round; the output projection accumulates head by head
-    f8v acc[NTL];
+    acc8v acc[NTL];
 #pragma unroll
     for (int j = 0; j < NTL; ++j)
     {
@@ -103,7 +93,7 @@ __device__ void wide_core(const PwinParams& p, const u8v* __restrict__ img, cons
         if (h < H)
         {
             // six independent chains (Q, K, V x 2 n-tiles), each over kt in order
-            f8v dq[6];
+            acc8v dq[6];
 #pragma unroll
             for (int u = 0; u < 6; ++u)
                 dq[u] = splat8(0.0f);
@@ -119,7 +109,7 @@ __device__ void wide_core(const PwinParams& p, const u8v* __restrict__ img, cons
 #pragma unroll
                 for (int nt = 0; nt < 2; ++nt)
                 {
-                    const f8v d = dq[2 * j + nt];
+                    const acc8v d = dq[2 * j + nt];
                     if (j == 0)
                         qop[nt] = operand_from_f8(d);
                     else if (j == 1)
@@ -143,7 +133,7 @@ __device__ void wide_core(const PwinParams& p, const u8v* __restrict__ img, cons
             for (int kt = 0; kt < 4; ++kt)
             {
                 const u4v bi = bias[((h * 4 + t) * 4 + kt) * 32 + l];
-                f8v d;
+                acc8v d;
 #pragma unroll
                 for (int i = 0; i < 4; ++i)
                 {
@@ -176,7 +166,7 @@ __device__ void wide_core(const PwinParams& p, const u8v* __restrict__ img, cons
 #pragma unroll
             for (int nt = 0; nt < 2; ++nt)
             {
-                f8v d = splat8(0.0f);
+                acc8v d = splat8(0.0f);
 #pragma unroll
                 for (int kt = 0; kt < 4; ++kt)
                     d = mma16(op_lds(&vt[g][16 * nt + m][16 * kt]), pop[kt], d);
@@ -243,7 +233,7 @@ __device__ void wide_core(const PwinParams& p, const u8v* __restrict__ img, cons
         {
             if (c >= L::NMLP)
                 break;
-            f8v d;
+            acc8v d;
             {
                 half_t vv[8];
                 dvec8(w, L::B1 + 64 * c + 32 * hn, vv);
@@ -339,7 +329,7 @@ __device__ void wide_encoder(const PwinParams& p, const u8v* __restrict__ img, c
     const uint8_t* w = p.w;
     for (int vt = wv; vt < L::PMT; vt += 4 * NG)
     {
-        f8v d;
+        acc8v d;
         {
             half_t vv[8];
             dvec8(w, L::PMB + 32 * vt, vv);
@@ -392,7 +382,7 @@ __device__ void wide_decoder(const PwinParams& p, const u8v* __restrict__ img, c
         for (int nt = g; nt < C / 16; nt += NG)
         {
             const int gnt = q * (C / 16) + nt;
-            f8v d;
+            acc8v d;
             {
                 half_t vv[8];
                 dvec8(p.w, L::EXPB + 32 * gnt, vv);

kernels/m/swin_block.h

@@ -5,7 +5,24 @@
 //   CIN  patch-expand input channels (0 = none): decoder input = f16(q8(expand(low-res CIN)) + skip)
 #pragma once
 #include "swin_common.h"
-#include <type_traits>
+#ifdef D4R_SWIN_DIAGNOSTICS
+extern "C" {
+__device__ int d4r_swin_debug_block[2] = {0, 4};
+__device__ half_t d4r_swin_debug_values[4 * 64 * 128];
+}
+template <int C, int AST> __device__ __forceinline__ void swin_snapshot(
+    const half_t* activation, int stage, int bx, int by, int tid, bool pair_order) {
+    if (bx == d4r_swin_debug_block[0] && by == d4r_swin_debug_block[1] && tid < 64)
+        for (int c = 0; c < C; ++c)
+            d4r_swin_debug_values[(stage * 64 + tid) * 128 + c] =
+                activation[tid * AST + (pair_order ? gperm(c) : apos(c))];
+    __syncthreads();
+}
+#endif
+
+// Immediate lane masks need only a compile-time integer, not the host C++
+// standard library (which is absent from device-only Windows HIP builds).
+template <int Mask> struct SwinLaneMask { static constexpr int value = Mask; };
 
 template <int C, int NW, int NPM, int CIN = 0> struct SwinLayout
 {
@@ -76,7 +93,12 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
     static_assert(NW % NH == 0 && NW / NH <= 4, "waves per head");
     constexpr int NPL = L::NPL, NT = L::NT, INNER = L::INNER;
     constexpr int AST = (C > INNER ? C : INNER) + 8;
-    constexpr int GST = 40, QST = 40, PST = 24;
+    constexpr int GST = 40, PST = 24;
+#ifdef SWIN_EXACT_PV
+    constexpr int QST = 56;
+#else
+    constexpr int QST = 40;
+#endif
 #ifndef SWIN_MLP_R
 #define SWIN_MLP_R(NW) ((NW) / 2)
 #endif
@@ -291,6 +313,9 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
     __syncthreads();
 
     // ------------------------------------------------ stage 2: Q/V projection + attention (wave = head)
+#ifdef D4R_SWIN_DIAGNOSTICS
+    swin_snapshot<C, AST>(A, 0, bx, by, tid, false);
+#endif
     {
         constexpr int MW = 4 / (NW / NH); // windows per wave
         const int h = NW == NH ? wv : wv % NH, m0 = NW == NH ? 0 : MW * (wv / NH);
@@ -387,16 +412,23 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
                 auto xr = [](hv2 v, auto mask) {
                     return __builtin_bit_cast(hv2, xor_lane<decltype(mask)::value>(__builtin_bit_cast(uint32_t, v)));
                 };
-                const hv2 v1 = wg[k] + xr(wg[k], std::integral_constant<int, 8>{});
-                const hv2 v2 = v1 + xr(v1, std::integral_constant<int, 2>{});
-                const hv2 v3 = v2 + xr(v2, std::integral_constant<int, 4>{});
-                const hv2 sum = v3 + xr(v3, std::integral_constant<int, 1>{});
+                const hv2 v1 = wg[k] + xr(wg[k], SwinLaneMask<8>{});
+                const hv2 v2 = v1 + xr(v1, SwinLaneMask<2>{});
+                const hv2 v3 = v2 + xr(v2, SwinLaneMask<4>{});
+                const hv2 sum = v3 + xr(v3, SwinLaneMask<1>{});
                 const hv2 rinv = {f16(1.0f / (float)sum[0]), f16(1.0f / (float)sum[1])};
                 const hv2 pw = wg[k] * rinv;
                 Qs[mrow(2 * k) * PST + l16] = pw[0];
                 Qs[mrow(2 * k + 1) * PST + l16] = pw[1];
             }
             wave_sync();
+#ifdef SWIN_EXACT_PV
+            half_t* Vs = Qs + 16 * PST;
+            for (int nt = 0; nt < 2; ++nt)
+                for (int i = 0; i < 8; ++i)
+                    Vs[mrow(i) * 32 + 16 * nt + l16] = vp[m][nt][i / 2][i & 1];
+            wave_sync();
+#endif
             const sop pa = lds16(Qs + l16 * PST);
 #pragma unroll
             for (int nt = 0; nt < 2; ++nt)
@@ -419,7 +451,19 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
                 }
                 const h16 vb = __builtin_bit_cast(h16, vw);
 #endif
-                const f8v o = wmma(pa, vb, splat(0.0f));
+                f8v o = wmma(pa, vb, splat(0.0f));
+#ifdef SWIN_EXACT_PV
+                // FP16 P/V products need more than 24 significant bits in a
+                // cancellation-heavy dot. An f32 WMMA can round to the wrong
+                // FP16 neighbour at a midpoint, then flip the FP8 output code.
+                // This baseline sums the 16 FP16 products before one FP16 round.
+                for (int i = 0; i < 8; ++i) {
+                    double dot = 0.0;
+                    for (int k = 0; k < 16; ++k)
+                        dot += (double)Qs[mrow(i) * PST + k] * (double)Vs[k * 32 + 16 * nt + l16];
+                    o[i] = (float)(half_t)dot;
+                }
+#endif
                 const int ocol = apos(32 * h + ginv(16 * nt + l16));
 #pragma unroll
                 for (int i = 0; i < 8; i += 2)
@@ -435,6 +479,9 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
     __syncthreads();
 
     // ------------------------------------------------ stage 3: output projection + residual
+#ifdef D4R_SWIN_DIAGNOSTICS
+    swin_snapshot<INNER, AST>(A, 3, bx, by, tid, false);
+#endif
 #pragma unroll
     for (int kc = 0; kc < NH; ++kc)
     {
@@ -468,6 +515,11 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
     if (tid < 64)
     {
         // the row as 128-bit LDS loads: element 8 j + c of n8 tile j
+#ifdef D4R_SWIN_DIAGNOSTICS
+        if (bx == d4r_swin_debug_block[0] && by == d4r_swin_debug_block[1])
+            for (int c = 0; c < C; ++c)
+                d4r_swin_debug_values[(64 + tid) * 128 + c] = A[tid * AST + gperm(c)];
+#endif
         h8 row[L::NT8];
 #pragma unroll
         for (int j = 0; j < L::NT8; ++j)
@@ -526,6 +578,9 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
     __syncthreads();
 
     // ------------------------------------------------ stage 4: MLP, R chunks per round
+#ifdef D4R_SWIN_DIAGNOSTICS
+    swin_snapshot<C, AST>(A, 2, bx, by, tid, false);
+#endif
     {
         constexpr int WPC = NW / R, MPW = 4 / WPC; // waves per chunk, fc1 m tiles per wave
         const int cw = wv / WPC, mb = MPW * (wv % WPC);
@@ -715,7 +770,16 @@ __device__ __forceinline__ void swin_block(const CommonParams& p, const TubePara
                 if (MX < 0 || MX >= W2 || MY < 0 || MY >= H2)
                     continue;
                 p.p48[((size_t)((ch >> 5) * H2 + MY) * W2 + MX) * 32 + (ch & 31)] =
-                    (uint8_t)enc8(y[j].get(i));
+                    (uint8_t)enc8(
+#ifdef SWIN_EXACT
+                        // The audited 310.9 patch-merge path bounds the f16
+                        // result to +/- 2*pi before e4m3 quantisation.
+                        __builtin_elementwise_max(__builtin_elementwise_min(y[j].get(i), (half_t)6.283185307179586f),
+                                                  (half_t)-6.283185307179586f)
+#else
+                        y[j].get(i)
+#endif
+                    );
             }
         }
     }

kernels/m/swin_common.h

@@ -6,7 +6,11 @@
 // D4R_FP8_WMMA (gfx12 layout only): the GEMMs whose operands are both e4m3 values run as native FP8 WMMAs on
 // e4m3 bytes (weights prepared as bytes, activations encoded when loaded); P V stays f16.
 #pragma once
+#ifdef D4R_DEVICE_ONLY_MINIMAL
+#include "../common/hip_device_minimal.h"
+#else
 #include <hip/hip_runtime.h>
+#endif
 #include <stdint.h>
 #include "../common/wmma_layout.h"
 #ifdef D4R_ACCURACY
@@ -269,11 +273,25 @@ __device__ __forceinline__ sop lds16(const half_t* p)
 // e4m3 bytes of an f16 operand whose values are e4m3 values (K order kept: byte j = element j)
 __device__ __forceinline__ gop to_fp8(sop v)
 {
+#if defined(D4R_FP8_HW_PACK) && defined(__GFX12__)
+    // Inputs already contain exact e4m3 values. gfx12's native packed convert
+    // avoids the software subnormal/sign/exponent reconstruction below. Keep
+    // opt-in until all finite encodings and layer/network outputs pass replay.
+    gop result;
+#pragma unroll
+    for (int word = 0; word < 2; ++word) {
+        int packed = __builtin_amdgcn_cvt_pk_fp8_f32((float)v[4 * word], (float)v[4 * word + 1], 0, false);
+        packed = __builtin_amdgcn_cvt_pk_fp8_f32((float)v[4 * word + 2], (float)v[4 * word + 3], packed, true);
+        result[word] = (uint32_t)packed;
+    }
+    return result;
+#else
     uint32_t c[4];
 #pragma unroll
     for (int j = 0; j < 4; ++j)
         c[j] = codes8x2((hv2){v[2 * j], v[2 * j + 1]});
     return (u2v){__builtin_amdgcn_perm(c[1], c[0], 0x06040200u), __builtin_amdgcn_perm(c[3], c[2], 0x06040200u)};
+#endif
 }
 // f32 += A B over 16 K for e4m3 operands
 __device__ __forceinline__ f8v wmma8(gop a, gop b, f8v c)

kernels/tex/make_ptx.py

@@ -209,8 +209,9 @@ def replace_rz_round(lines):
 
 
 ENC0_REF = "rrlite_enc0_4x4_mvhi_hdr_folded"
-# the other flag combinations of the kernels whose only native part is the surface-store rewrite
+# Surface-store and round-idiom recipes for the other flag combinations.
 SUST_ONLY_RE = re.compile(r"^(hiluma_engine_output_depth(inv|reg)_mv(hi|lo)_(hdr|ldr)(_max)?_v[12]_rel|"
+                          r"hiluma_engine_input_depth(inv|reg)_mv(hi|lo)_(hdr|ldr)_v2_rel|"
                           r"rrlite_post_3_[12]_mv(hi|lo)_(hdr|ldr)(_folded)?|"
                           r"rrlite_enc0_4x4_mv(hi|lo)_(hdr|ldr)|rrlite_dec0_4x4|"
                           r"rrlite_downsample_kernel_(static|dynamic)_(hdr|ldr))$")
@@ -277,7 +278,7 @@ def kernel_spec(name):
     if ENC0_RE.match(name):
         return enc0_variant(name)
     if SUST_ONLY_RE.match(name):
-        return dict(file="", sust=True, extern="", rz_round=name.startswith("hiluma_engine_output"))
+        return dict(file="", sust=True, extern="", rz_round=name.startswith("hiluma_engine_"))
     sys.exit(f"make_ptx: no recipe for {name}")
 
 

kernels/tools/ptxsim.py

@@ -96,7 +96,8 @@ def split_args(s):
 
 
 def parse_kernel(path, name):
-    src = open(path).read()
+    with open(path) as file:
+        src = file.read()
     i = src.index('.entry ' + name + '(')
     j = src.find('\n.visible', i + 10)
     j = len(src) if j < 0 else j
@@ -340,12 +341,11 @@ class Block:
         steps = 0
         while pc < len(stmts):
             st = stmts[pc]
-            for l in st.labels:
-                if l in pending:
-                    active |= pending.pop(l)
+            if pc in pending:
+                active |= pending.pop(pc)
             if not active.any():
-                # jump to the nearest label someone waits at
-                targets = sorted(self.labels[l] for l in pending)
+                # Reconverge at either a forward target or a loop fallthrough.
+                targets = sorted(pending)
                 if not targets:
                     break
                 pc = targets[0]
@@ -365,10 +365,16 @@ class Block:
                     if not taking.any():
                         pc += 1
                         continue
-                    raise NotImplementedError('divergent backward branch at ' + st.text)
+                    # Lanes finishing a loop wait at its fallthrough while the
+                    # other lanes execute their remaining iterations. Their
+                    # registers and memory writes stay masked until reconvergence.
+                    pending[pc + 1] = pending.get(pc + 1, np.zeros(self.T, bool)) | (active & ~taking)
+                    active = taking.copy()
+                    pc = target
+                    continue
                 active = active & ~taking
                 if taking.any():
-                    pending[st.args[0]] = pending.get(st.args[0], np.zeros(self.T, bool)) | taking
+                    pending[target] = pending.get(target, np.zeros(self.T, bool)) | taking
                 pc += 1
                 continue
             if mask.any() or st.op.startswith(('mma', 'shfl', 'movmatrix', 'bar')):

kernels/tools/pwin_model.py

@@ -6,6 +6,38 @@ import numpy as np
 
 F16, F32, F64 = np.float16, np.float32, np.float64
 
+# Legacy replay reports retain their original approximate norm by default.
+# Windows strict K validation selects the PTX fragment's rounded reduction.
+NORM_FRAGMENT_ORDER = False
+
+
+def norm_rows(x):
+    if not NORM_FRAGMENT_ORDER:
+        return f16(np.sum(x.astype(F32).astype(F64) ** 2, axis=1))
+    tokens, channels = x.shape
+    assert channels in (32, 64, 96, 128, 160)
+    square = f16(x.astype(F64) ** 2)
+    partial = []
+    for lane in range(4):
+        halves = []
+        for parity in range(2):
+            pairs = [add16(square[:, 2 * lane + 8 * parity + 32 * g:2 * lane + 8 * parity + 32 * g + 2],
+                           square[:, 2 * lane + 8 * parity + 32 * g + 16:2 * lane + 8 * parity + 32 * g + 18])
+                     for g in range(channels // 32)]
+            value = pairs[0]
+            if channels >= 64:
+                value = add16(value, pairs[1])
+            if channels == 96:
+                value = add16(value, pairs[2])
+            if channels >= 128:
+                value = add16(value, add16(pairs[2], pairs[3]))
+            if channels == 160:
+                value = add16(value, pairs[4])
+            halves.append(value)
+        partial.append(add16(halves[0], halves[1]))
+    total = add16(add16(partial[0], partial[1]), add16(partial[2], partial[3]))
+    return add16(total[:, 0], total[:, 1])
+
 
 class Dump:
     def __init__(self, d):
@@ -181,7 +213,7 @@ def pwin_enc2(P, bx, by, pm_order=((0, 0), (0, 1), (1, 0), (1, 1)), b2_in_c0=Tru
     """logical enc2 layer (H 2, C 64 -> merged 96) for one window; returns (y [64 x 64], merged [16 x 96])"""
     C, H, Dh = 64, 2, 32
     x0 = load_window(P, bx, by, C)
-    s = f16(np.sum(x0.astype(F32).astype(F64) ** 2, axis=1))
+    s = norm_rows(x0)
     r = rsqrt16(s)
     h1 = mul16(x0, mul16(r[:, None], vec(P, 0, C)[None, :]))
     Os = []
@@ -248,7 +280,7 @@ def swin_core(P, L, x0, dbg=None, posattn=False):
     """norm -> attention -> Wo + residual -> MLP (+ residual): the block output y [64 x C]"""
     C, H = L.C, L.H
     NCH = C // 32
-    s = f16(np.sum(x0.astype(F32).astype(F64) ** 2, axis=1))
+    s = norm_rows(x0)
     r = rsqrt16(s)
     h1 = mul16(x0, mul16(r[:, None], vec(P, L.G1, C)[None, :]))
     Os = []

kernels/tools/swin_check.py

@@ -23,6 +23,10 @@ import swin_model as sm  # noqa: E402
 LAYERS = {'enc1': (64, 2, 96, 0), 'enc2': (96, 4, 128, 0), 'enc3_tube': (128, 4, 0, 0), 'dec2': (96, 4, 0, 128),
           'dec1': (64, 2, 0, 96)}
 
+# Preserve the existing Linux oracle by default; Windows strict replay enables
+# the audited 310.9 f16 patch-merge bound before final e4m3 quantisation.
+CLAMP_PATCH_MERGE = False
+
 
 def blocks(grid, n, seed=1):
     gx, gy = grid[0], grid[1]
@@ -47,7 +51,11 @@ def model_block(P, layer, bx, by):
             Wg = me.E4M3[P.wbuf[sm.woff_table(PM0 + g * 128 * C, 512, 64 * C, 4 * C, 32)]]
             bias = P.f16vec(PM0 + 4 * C * NPM + 64 * g, 32)
             cols.append(me.mma_chain(A, Wg, C0=np.broadcast_to(bias, (16, 32)).copy()))
-        merged = me.q8(sm.pair_to_nat(np.concatenate(cols, axis=1)))
+        merged = sm.pair_to_nat(np.concatenate(cols, axis=1))
+        if CLAMP_PATCH_MERGE:
+            limit = me.f16(2 * np.pi)
+            merged = np.clip(merged, -limit, limit)
+        merged = me.q8(merged)
     return out, merged
 
 

kernels/tools/swin_model.py

@@ -98,7 +98,7 @@ def layout(C, heads, pre=0):
     L['end'] = M0 + 66 * C + 64 + (64 * C + 64) * (NC - 1)
     return L
 
-def swin_block(P, x0, C, heads, pre=0):
+def swin_block(P, x0, C, heads, pre=0, stages=None):
     """x0: 64 x C natural (f16 values). Returns (x2 pair order, out natural fp8 values)."""
     fp8 = lambda T: E4M3[P.wbuf[T]]
     L = layout(C, heads, pre)
@@ -116,6 +116,8 @@ def swin_block(P, x0, C, heads, pre=0):
         Wo[32 * s:32 * s + 32] = woff_table(L['head'][s] + 64 * C + 512, 0, 512, 32, C)
     x1 = mma_chain(pair_to_nat(q8(O)), fp8(Wo), C0=f16(nat_to_pair(x0) + P.f16vec(L['bo'], C)[None, :]))
     h2 = pair_to_nat(rms_from_sum(x1, tree_norm2(x1), P.f16vec(L['g2'], C)))
+    if stages is not None:
+        stages.update(h1=h1, x1=pair_to_nat(x1), h2=h2, O=pair_to_nat(q8(O)))
     x2 = f16(x1 + P.f16vec(L['b2'], C)[None, :])
     idx = gp(np.arange(32))
     for c, B1 in enumerate(L['b1']):

packaging/D4R_README.txt

@@ -128,7 +128,7 @@ cache in ~/.cache/d4r can be deleted too.
 
 Licenses
 --------
-d4r is Apache License 2.0. The release also contains ZLUDA (Apache 2.0 or MIT), vkd3d-proton
+d4r is GNU General Public License, version 3 only (GPL-3.0-only). The release also contains ZLUDA (Apache 2.0 or MIT), vkd3d-proton
 (LGPL 2.1, patched) and OptiScaler 0.9.4 (GPL 3.0, unmodified). d4r/source/SOURCES.txt says where
 each file comes from, and d4r/licenses has the license texts. d4r is not affiliated with NVIDIA,
 AMD or the OptiScaler project.

packaging/RELEASE_NOTES.md

@@ -58,6 +58,6 @@ The rebuilt runtime may compile a new kernel cache on first start. `sh d4r/d4r-c
 
 ## Licenses
 
-d4r is Apache 2.0. ZLUDA, LLVM, vkd3d-proton, OptiScaler, and the bundled ROCm libraries retain their respective licenses in `d4r/licenses`; sources and patches are listed in `d4r/source`. NVIDIA's libraries and texture kernels compiled from its code are not covered by those licenses. d4r is not affiliated with NVIDIA or AMD.
+d4r is GNU General Public License, version 3 only (GPL-3.0-only). ZLUDA, LLVM, vkd3d-proton, OptiScaler, and the bundled ROCm libraries retain their respective licenses in `d4r/licenses`; sources and patches are listed in `d4r/source`. NVIDIA's libraries and texture kernels compiled from its code are not covered by those licenses. d4r is not affiliated with NVIDIA or AMD.
 
 The attached `.sha256` file contains the ZIP's checksum.

packaging/SOURCES.txt

@@ -1,7 +1,7 @@
 d4r @VERSION@: where every file in this release comes from
 ============================================================
 
-Built from source by d4r (Apache License 2.0, d4r/licenses/d4r-LICENSE.txt):
+Built from source by d4r (GPL-3.0-only, d4r/licenses/d4r-LICENSE.txt):
   d4r/nvngx.dll          NGX shim            tools/d4r_nvngx_shim.cpp in the d4r repository
   d4r/nvcuda.dll         Wine CUDA bridge    tools/wine_nvcuda_bridge.c
   d4r/kernels/           native RDNA3/RDNA4 kernels for the DLSS 4 and 4.5 network layers, kernels/k and kernels/m

packaging/windows/OptiScaler.ini

@@ -0,0 +1,27 @@
+; OptiScaler settings for the d4r Windows drag-in release. Values not listed keep OptiScaler's
+; defaults. The DLSS model is chosen in d4r\d4r.ini, not here.
+[Upscalers]
+Dx12Upscaler=dlss
+[FrameGen]
+Enabled=false
+FGInput=nofg
+FGOutput=nofg
+[DLSS]
+Enabled=true
+AllowExternalBackend=true
+RenderPresetOverride=false
+UseGenericAppIdWithDlss=false
+[Libraries]
+; Relative to this folder (needs d4r's OptiScaler with patch 0006).
+NvngxPath=d4r
+NvngxDlssPath=d4r
+NvngxFeaturePath=d4r
+[Hotfix]
+RestoreComputeSignature=false
+RestoreGraphicSignature=false
+ExtendedStateRestore=false
+[Log]
+LogToFile=true
+LogLevel=2
+[Menu]
+DisableSplash=true

packaging/windows/WINDOWS_README.txt

@@ -0,0 +1,63 @@
+d4r for Windows: NVIDIA DLSS on AMD Radeon RDNA3 and RDNA4
+===========================================================
+
+d4r runs NVIDIA's own DLSS (DLSS 4 by default) on a Radeon GPU in DirectX 12 games. OptiScaler
+(included) catches the game's upscaler calls and hands them to d4r.
+
+This is an early release. Only the Radeon RX 9070 XT has been tested on real hardware; every other
+GPU in this release is compile-tested. SUPPORTED_GAMES.md in the source repository lists the
+tested games. Expect problems.
+
+What you need
+-------------
+- Windows 11, a Radeon RX 7000 or RX 9000 series GPU, a current AMD Adrenalin driver.
+- A DirectX 12 game without anti-cheat (OptiScaler injects a DLL; it can get an account banned).
+- Two files from NVIDIA, which this ZIP does not include:
+    nvngx_dlss.dll  version 310.9.1 (tested) or 310.7.0. Many games ship one in their folder;
+                    right-click > Properties > Details shows the version.
+    _nvngx.dll      version 32.0.16.1714 (tested) or 32.0.15.9636. It is part of an NVIDIA display
+                    driver package: extract the installer with 7-Zip and search for _nvngx.dll.
+
+Install
+-------
+1. Extract this ZIP into the folder that holds the game's main .exe. For Unreal Engine games that
+   is <game>\<Project>\Binaries\Win64, next to <Project>-Win64-Shipping.exe.
+   If the folder already has a dxgi.dll or OptiScaler.ini (another OptiScaler install), or a
+   d3d12.dll from a Linux install, move those out first.
+2. Copy nvngx_dlss.dll into the d4r folder and _nvngx.dll into d4r\ngx.
+3. Optional: check the install. In the game folder, open PowerShell and run
+       powershell -ExecutionPolicy Bypass -File d4r\d4r-check.ps1
+4. Start the game from Steam, Epic or a shortcut as usual. In its graphics settings choose DLSS
+   (or FSR 3.1/XeSS if DLSS is hidden; OptiScaler then feeds DLSS). Keep frame generation off.
+   Press Insert in game for OptiScaler's menu.
+
+The first time DLSS starts, the game can freeze for several minutes while DLSS's GPU kernels are
+compiled. They are cached in %LOCALAPPDATA%\d4r\cache, so later starts are quick.
+
+Settings
+--------
+Edit d4r\d4r.ini (it is commented) and restart the game. Each game has its own copy.
+- Model: K (DLSS 4, default) or M (DLSS 4.5, heavier). Select the quality mode in the game.
+- AsyncInterop, ValidateOutput, Log: for testing and bug reports; the defaults are the tested setting.
+OptiScaler's own settings (overlay, render ratios) are in OptiScaler.ini.
+
+If something goes wrong
+-----------------------
+- Run d4r\d4r-check.ps1: it prints ok / MISSING / note lines with the fix for each problem.
+- d4r\d4r_nvngx.log is rewritten at every launch. A line "d4r: DLSS disabled: ..." says why.
+- DLSS missing in the menu and no d4r_nvngx.log: the files are not next to the game's main .exe.
+- For a bug report run  d4r\d4r-check.ps1 -Report  and send the ZIP it puts on your Desktop,
+  with your GPU, the game, the model and what the image looked like. Logs can contain folder names.
+- Not supported: frame generation, ray reconstruction, DirectX 11, Vulkan, models E and L.
+
+Uninstall
+---------
+Delete dxgi.dll, OptiScaler.ini, OptiScaler.log (if present), WINDOWS_README.txt and the d4r folder
+from the game folder. The cache in %LOCALAPPDATA%\d4r can be deleted too. Nothing else was changed.
+
+Licenses
+--------
+d4r is GNU General Public License, version 3 only (GPL-3.0-only). This ZIP also contains ZLUDA (Apache 2.0 or MIT), OptiScaler (GPL 3.0,
+patched; the patches are in the source repository), and AMD's HIP runtime. d4r\licenses has the
+texts. d4r is not affiliated with NVIDIA, AMD or the OptiScaler project. NVIDIA's files are yours
+to supply, under NVIDIA's terms.

packaging/windows/d4r.ini

@@ -0,0 +1,41 @@
+; d4r settings for this game (Windows). This file lives in the game's d4r folder and applies to
+; this game only. Edit it with Notepad, save, and restart the game. Mistakes are reported in
+; d4r\d4r_nvngx.log and by d4r-check.ps1; an invalid value falls back to the default shown here.
+;
+; Only settings that exist and are checked on Windows are listed. The Linux settings for other
+; models, kernels and interop are not available here.
+
+[DLSS]
+; DLSS model:
+;
+; Model | DLSS | Recommended modes          | Notes
+; ------+------+----------------------------+--------------------------------------
+; K     | 4    | DLAA / Quality / Balanced  | Default; faster
+; M     | 4.5  | Performance                | More demanding
+;
+; Select the quality mode (Quality, Performance, ...) in the game or the OptiScaler menu (Insert).
+; Models E and L are not available on Windows.
+Model = K
+; NVIDIA's library stamps "DLSS SDK - DO NOT DISTRIBUTE" over the image; d4r turns that off.
+; true shows it.
+ShowWatermark = false
+
+[Interop]
+; Experimental: lets the game continue while DLSS runs on the GPU instead of waiting for it.
+; Requires a game that uses one D3D12 command queue. Off is the tested setting. Whether it is
+; faster depends on the game and has not been measured broadly; turn it off if the game crashes,
+; stutters or shows a wrong image.
+AsyncInterop = false
+
+[Debug]
+; Check every DLSS output for invalid values (NaN/Inf) on the GPU. Costs some speed; use it only
+; when reporting a problem.
+ValidateOutput = false
+; normal: errors and a summary in d4r\d4r_nvngx.log. verbose: every API call and kernel launch
+; (large log; use it only when asked for a bug report).
+Log = normal
+
+[Paths]
+; Folder for the compiled DLSS kernels. auto = %LOCALAPPDATA%\d4r\cache. The first launch fills it
+; and can take several minutes; later launches are quick.
+CacheDir = auto

patches/optiscaler/0001-windows-external-d4r-backend.patch

@@ -0,0 +1,328 @@
+From 33bbac250ac7e2ca4eff67e8817ada9dad578208 Mon Sep 17 00:00:00 2001
+From: Codex <codex@localhost>
+Date: Thu, 1 Oct 2026 16:10:08 +0300
+Subject: [PATCH] Support explicitly selected Windows d4r DLSS backend on
+ physical AMD adapters
+
+---
+ OptiScaler/Config.cpp                         |  3 ++
+ OptiScaler/Config.h                           |  1 +
+ OptiScaler/OptiScaler.vcxproj                 |  4 +--
+ OptiScaler/State.h                            |  1 +
+ OptiScaler/Util.cpp                           | 12 +++++--
+ OptiScaler/dllmain.cpp                        | 33 +++++++++++++++++--
+ OptiScaler/hooks/LibraryLoad_Hooks.cpp        | 17 ++++++++++
+ OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp         | 17 ++++++++++
+ OptiScaler/misc/IdentifyGpu.cpp               | 20 +++++++++++
+ OptiScaler/proxies/NVNGX_Proxy.h              |  5 ++-
+ OptiScaler/upscalers/FeatureProvider_Dx12.cpp | 10 ++++++
+ 11 files changed, 115 insertions(+), 8 deletions(-)
+
+diff --git a/OptiScaler/Config.cpp b/OptiScaler/Config.cpp
+index d8c62d3..f444387 100644
+--- a/OptiScaler/Config.cpp
++++ b/OptiScaler/Config.cpp
+@@ -323,6 +323,7 @@ bool Config::Reload(std::filesystem::path iniPath)
+         {
+             // Don't enable again if set false because of no nvngx found
+             DLSSEnabled.set_from_config(readBool("DLSS", "Enabled"));
++            DLSSAllowExternalBackend.set_from_config(readBool("DLSS", "AllowExternalBackend"));
+             UseGenericAppIdWithDlss.set_from_config(readBool("DLSS", "UseGenericAppIdWithDlss"));
+ 
+             RenderPresetOverride.set_from_config(readBool("DLSS", "RenderPresetOverride"));
+@@ -1168,6 +1169,8 @@ bool Config::SaveIni()
+     // DLSS
+     {
+         ini.SetValue("DLSS", "Enabled", GetBoolValue(Instance()->DLSSEnabled.value_for_config()).c_str());
++        ini.SetValue("DLSS", "AllowExternalBackend",
++                     GetBoolValue(Instance()->DLSSAllowExternalBackend.value_for_config()).c_str());
+         ini.SetValue("DLSS", "RenderPresetOverride",
+                      GetBoolValue(Instance()->RenderPresetOverride.value_for_config()).c_str());
+         ini.SetValue("DLSS", "RenderPresetForAll",
+diff --git a/OptiScaler/Config.h b/OptiScaler/Config.h
+index 4ab62a4..0caf8c8 100644
+--- a/OptiScaler/Config.h
++++ b/OptiScaler/Config.h
+@@ -275,6 +275,7 @@ class Config
+ 
+     // DLSS
+     CustomOptional<bool> DLSSEnabled { true };
++    CustomOptional<bool> DLSSAllowExternalBackend { false };
+     CustomOptional<bool> RenderPresetOverride { false };
+     CustomOptional<uint32_t> RenderPresetForAll { 0 };
+     CustomOptional<uint32_t> RenderPresetDLAA { 0 };
+diff --git a/OptiScaler/OptiScaler.vcxproj b/OptiScaler/OptiScaler.vcxproj
+index 24ca80b..dfbfc97 100644
+--- a/OptiScaler/OptiScaler.vcxproj
++++ b/OptiScaler/OptiScaler.vcxproj
+@@ -236,7 +236,7 @@
+       <SubSystem>Windows</SubSystem>
+       <EnableCOMDATFolding>true</EnableCOMDATFolding>
+       <OptimizeReferences>true</OptimizeReferences>
+-      <GenerateDebugInformation>false</GenerateDebugInformation>
++      <GenerateDebugInformation>true</GenerateDebugInformation>
+       <EnableUAC>false</EnableUAC>
+       <AdditionalDependencies>winhttp.lib;WindowsApp.lib;Dbghelp.lib;dxgi.lib;d3d11.lib;d3d12.lib;vulkan-1.lib;dxguid.lib;freetype.lib;ffx_fsr2_api_x64.lib;ffx_fsr2_api_dx11_x64.lib;ffx_fsr2_api_dx12_x64.lib;ffx_fsr2_api_vk_x64.lib;ffx_fsr2_212_api_dx12_x64.lib;ffx_fsr2_212_api_vk_x64.lib;ffx_fsr2_212_api_x64.lib;d3dcompiler.lib;ffx_backend_dx11_x64.lib;ffx_fsr3_x64.lib;ffx_frameinterpolation_x64.lib;ffx_fsr3upscaler_x64.lib;ffx_opticalflow_x64.lib;%(AdditionalDependencies)</AdditionalDependencies>
+       <ModuleDefinitionFile>Source.def</ModuleDefinitionFile>
+@@ -873,4 +873,4 @@ copy NUL "$(SolutionDir)x64\Release\a\!! EXTRACT ALL FILES TO GAME FOLDER !!" /Y
+   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+   <ImportGroup Label="ExtensionTargets">
+   </ImportGroup>
+-</Project>
+\ No newline at end of file
++</Project>
+diff --git a/OptiScaler/State.h b/OptiScaler/State.h
+index 42164de..84f8263 100644
+--- a/OptiScaler/State.h
++++ b/OptiScaler/State.h
+@@ -265,6 +265,7 @@ class State
+     int dlssgDetectedInterpolationCount = 0;
+ 
+     // DLSS
++    bool dlssExternalBackend = false;
+     bool dlssPresetsOverriddenExternally = false;
+     bool dlssPresetsOverridenByOpti = false;
+     uint32_t dlssRenderPresetExternal = 0;
+diff --git a/OptiScaler/Util.cpp b/OptiScaler/Util.cpp
+index f7ac6fa..7367a91 100644
+--- a/OptiScaler/Util.cpp
++++ b/OptiScaler/Util.cpp
+@@ -486,8 +486,16 @@ bool Util::GetFileVersion(std::wstring dllPath, version_t* fileVersionOut, versi
+ 
+ bool Util::IsSubpath(const std::filesystem::path& path, const std::filesystem::path& base)
+ {
+-    auto rel = std::filesystem::relative(path, base);
+-    auto first = *rel.begin();
++    // Called by LdrLoadDll hooks: relative()/weakly_canonical() perform file
++    // queries, can re-enter the hooks, and throw when an optional directory or
++    // a bare DLL search name cannot be resolved. This is a lexical routing
++    // check, not a filesystem access control decision.
++    auto normalizedPath = std::filesystem::path(ToLower(path.lexically_normal().wstring()));
++    auto normalizedBase = std::filesystem::path(ToLower(base.lexically_normal().wstring()));
++    auto rel = normalizedPath.lexically_relative(normalizedBase);
++    if (rel.empty())
++        return false;
++    const auto first = *rel.begin();
+     return first != "." && first != "..";
+ }
+ 
+diff --git a/OptiScaler/dllmain.cpp b/OptiScaler/dllmain.cpp
+index cba14b1..b4b786e 100644
+--- a/OptiScaler/dllmain.cpp
++++ b/OptiScaler/dllmain.cpp
+@@ -948,7 +948,7 @@ static void CheckWorkingMode()
+ 
+     // NVAPI
+     // Doesn't seem to like GetModuleHandle for some reason, so call our load to make sure
+-    if (GetDllNameWModule(&nvapiNamesW) != nullptr)
++    if (!State::Instance().dlssExternalBackend && GetDllNameWModule(&nvapiNamesW) != nullptr)
+     {
+         // This hooks nvapi as well when possible
+         auto nvapi64 = LibraryLoadHooks::LoadNvApi();
+@@ -1958,7 +1958,33 @@ BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserv
+             return nvidiaDetected;
+         };
+ 
+-        bool possibleNvidia = isNvidiaViaNvapi();
++        // Opt in only to a configured, versioned Windows d4r backend. The
++        // marker performs no HIP/NGX initialization under DLL_PROCESS_ATTACH.
++        // GPU support is still checked by its public NGX requirements API.
++        if (Config::Instance()->DLSSEnabled.value_or_default() &&
++            Config::Instance()->DLSSAllowExternalBackend.value_or_default() &&
++            Config::Instance()->NvngxPath.has_value())
++        {
++            auto backendPath = std::filesystem::path(Config::Instance()->NvngxPath.value()) / L"_nvngx.dll";
++            if (backendPath.is_absolute())
++            {
++                auto module = NtdllProxy::LoadLibraryExW_Ldr(backendPath.c_str(), nullptr,
++                    LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR | LOAD_LIBRARY_SEARCH_DEFAULT_DIRS);
++                if (module)
++                {
++                    using BackendVersion = unsigned (*)();
++                    auto version = reinterpret_cast<BackendVersion>(
++                        KernelBaseProxy::GetProcAddress_()(module, "d4r_WindowsBackendVersion"));
++                    State::Instance().dlssExternalBackend = version && version() == 1;
++                    NtdllProxy::FreeLibrary_Ldr(module);
++                }
++            }
++            if (State::Instance().dlssExternalBackend)
++                spdlog::info("Validated external Windows d4r DLSS backend; retaining physical GPU identity");
++            else
++                spdlog::error("AllowExternalBackend requires an absolute NvngxPath containing Windows d4r ABI 1");
++        }
++        bool possibleNvidia = !State::Instance().dlssExternalBackend && isNvidiaViaNvapi();
+ 
+         spdlog::info("");
+         spdlog::info("Check for DLSS files");
+@@ -1992,7 +2018,8 @@ BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserv
+             State::Instance().NVNGX_DLSSG_Path = Util::FindFilePath(exePath, "nvngx_dlssg.dll");
+ 
+         // Not 100% accurate for Nvidia cards without DLSS
+-        if (Config::Instance()->DLSSEnabled.value_or_default() && possibleNvidia)
++        if (Config::Instance()->DLSSEnabled.value_or_default() &&
++            (possibleNvidia || State::Instance().dlssExternalBackend))
+         {
+             if (State::Instance().NVNGX_DLSS_Path.has_value())
+             {
+diff --git a/OptiScaler/hooks/LibraryLoad_Hooks.cpp b/OptiScaler/hooks/LibraryLoad_Hooks.cpp
+index 90bdb89..108ea5b 100644
+--- a/OptiScaler/hooks/LibraryLoad_Hooks.cpp
++++ b/OptiScaler/hooks/LibraryLoad_Hooks.cpp
+@@ -46,6 +46,18 @@ HMODULE LibraryLoadHooks::LoadLibraryCheckW(std::wstring libName, LPCWSTR lpLibF
+ {
+     auto libNameA = wstring_to_string(libName);
+ 
++    // The external D3D12 shim itself uses a locally supplied CUDA NGX core.
++    // Keep that exact absolute path distinct from game-facing NGX interception.
++    if (State::Instance().dlssExternalBackend)
++    {
++        wchar_t corePath[32768] {};
++        const auto length = GetEnvironmentVariableW(L"D4R_NGX_CORE", corePath, 32768);
++        if (length && length < 32768 &&
++            Util::ToLower(std::filesystem::path(libName).lexically_normal().wstring()) ==
++                Util::ToLower(std::filesystem::path(corePath).lexically_normal().wstring()))
++            return nullptr;
++    }
++
+ #ifdef LOG_LIB_OPERATIONS
+     LOG_TRACE("{}", libNameA);
+ #endif
+@@ -132,6 +144,11 @@ HMODULE LibraryLoadHooks::LoadLibraryCheckW(std::wstring libName, LPCWSTR lpLibF
+     // NvApi64.dll
+     if (CheckDllNameW(&libName, &nvapiNamesW))
+     {
++        // An explicit external CUDA backend owns its NVAPI topology provider.
++        // Returning OptiScaler's fake-NVAPI would replace that provider and can
++        // recurse into DXGI while the NGX loader holds the loader lock.
++        if (State::Instance().dlssExternalBackend)
++            return nullptr; // Continue through the original loader.
+         LOG_INFO("{} call!", libNameA);
+ 
+         return LibraryLoadHooks::LoadNvApi();
+diff --git a/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp b/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
+index 68e1b42..89c9ba8 100644
+--- a/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
++++ b/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
+@@ -687,6 +687,7 @@ static NVSDK_NGX_Result TryCreateOptiFeature(ID3D12GraphicsCommandList* InCmdLis
+     }
+ 
+     // Assign handle
++    const bool allocatedHandle = *OutHandle == nullptr;
+     if (*OutHandle == nullptr)
+         *OutHandle = new NVSDK_NGX_Handle { handleId };
+     else
+@@ -705,6 +706,16 @@ static NVSDK_NGX_Result TryCreateOptiFeature(ID3D12GraphicsCommandList* InCmdLis
+     }
+     else
+     {
++        if (state.dlssExternalBackend && upscalerBackend == Upscaler::DLSS)
++        {
++            LOG_ERROR("External DLSS initialization failed; refusing FSR fallback");
++            if (shouldRestoreSigs)
++                D3D12Hooks::RestoreRoot(InCmdList);
++            D3D12Hooks::SetRootSignatureTracking(true);
++            Dx12Contexts.erase(handleId);
++            if (allocatedHandle) { delete *OutHandle; *OutHandle = nullptr; }
++            return NVSDK_NGX_Result_Fail;
++        }
+         LOG_ERROR("Feature '{}' initialization failed falling back to FSR 2.1.2", UpscalerDisplayName(upscalerBackend));
+         state.newBackend = Upscaler::FSR21;
+         state.changeBackend[handleId] = true;
+@@ -1027,6 +1038,12 @@ static NVSDK_NGX_Result TryEvaluateOptiFeature(ID3D12GraphicsCommandList* InCmdL
+     // Fallback to FSR 2.1.2 if feature failed to initialize and user didn't explicitly request it
+     if (!feature->IsInited() && cfg.Dx12Upscaler.value_or_default() != Upscaler::FSR21)
+     {
++        if (state.dlssExternalBackend && cfg.Dx12Upscaler.value_or_default() == Upscaler::DLSS)
++        {
++            LOG_ERROR("External DLSS feature is not initialized; refusing FSR fallback");
++            D3D12Hooks::SetRootSignatureTracking(true);
++            return NVSDK_NGX_Result_Fail;
++        }
+         LOG_WARN("Feature '{}' failed to initialize. Falling back to FSR 2.1.2", feature->Name());
+         ImGui::InsertNotification({ ImGuiToastType::Warning, 10000, "Falling back to FSR 2.1.2" });
+ 
+diff --git a/OptiScaler/misc/IdentifyGpu.cpp b/OptiScaler/misc/IdentifyGpu.cpp
+index 3877f9f..6c05904 100644
+--- a/OptiScaler/misc/IdentifyGpu.cpp
++++ b/OptiScaler/misc/IdentifyGpu.cpp
+@@ -8,6 +8,7 @@
+ #include <proxies/D3d12_Proxy.h>
+ #include "nvapi/NvApiTypes.h"
+ #include <hooks/Amdxc64_Hooks.h>
++#include <proxies/NVNGX_Proxy.h>
+ 
+ using Microsoft::WRL::ComPtr;
+ 
+@@ -187,6 +188,25 @@ std::vector<GpuInformation> IdentifyGpu::checkGpuInfo()
+ 
+     for (auto& gpuInfo : localCachedInfo)
+     {
++        if (State::Instance().dlssExternalBackend && !gpuInfo.softwareAdapter)
++        {
++            // Query the configured D3D12 backend outside DLL_PROCESS_ATTACH.
++            // Preserve vendor/device/architecture data obtained from DXGI.
++            auto requirements = NVNGXProxy::D3D12_GetFeatureRequirements();
++            ComPtr<IDXGIAdapter1> physicalAdapter;
++            if (requirements && SUCCEEDED(factory->EnumAdapterByLuid(gpuInfo.luid, IID_PPV_ARGS(&physicalAdapter))))
++            {
++                NVSDK_NGX_FeatureDiscoveryInfo discovery {};
++                discovery.SDKVersion = NVSDK_NGX_Version_API;
++                discovery.FeatureID = NVSDK_NGX_Feature_SuperSampling;
++                NVSDK_NGX_FeatureRequirement supported {};
++                const auto result = requirements(physicalAdapter.Get(), &discovery, &supported);
++                gpuInfo.dlssCapable = result == NVSDK_NGX_Result_Success &&
++                    supported.FeatureSupported == NVSDK_NGX_FeatureSupportResult_Supported;
++                LOG_INFO("External D3D12 DLSS backend: {} support={} result={:X}",
++                         gpuInfo.name, gpuInfo.dlssCapable, (unsigned) result);
++            }
++        }
+         if (gpuInfo.vendorId == VendorId::Nvidia)
+         {
+             queryNvapi(gpuInfo);
+diff --git a/OptiScaler/proxies/NVNGX_Proxy.h b/OptiScaler/proxies/NVNGX_Proxy.h
+index f6c08e5..7892009 100644
+--- a/OptiScaler/proxies/NVNGX_Proxy.h
++++ b/OptiScaler/proxies/NVNGX_Proxy.h
+@@ -500,7 +500,10 @@ class NVNGXProxy
+         {
+             LOG_INFO("Getting nvngx method addresses");
+ 
+-            HookNgxApi(_module.dll);
++            // The external bridge reports physical adapter support itself.
++            // Do not overwrite its unsupported result with NVIDIA spoofing.
++            if (!State::Instance().dlssExternalBackend)
++                HookNgxApi(_module.dll);
+ 
+             _module.D3D11_Init =
+                 (PFN_D3D11_Init) KernelBaseProxy::GetProcAddress_()(_module.dll, "NVSDK_NGX_D3D11_Init");
+diff --git a/OptiScaler/upscalers/FeatureProvider_Dx12.cpp b/OptiScaler/upscalers/FeatureProvider_Dx12.cpp
+index d738498..1191b29 100644
+--- a/OptiScaler/upscalers/FeatureProvider_Dx12.cpp
++++ b/OptiScaler/upscalers/FeatureProvider_Dx12.cpp
+@@ -42,6 +42,11 @@ bool FeatureProvider_Dx12::GetFeature(Upscaler upscaler, UINT handleId, NVSDK_NG
+         break;
+ 
+     case Upscaler::DLSS:
++        if (state.dlssExternalBackend && (!primaryGpu.dlssCapable || !state.NVNGX_DLSS_Path.has_value()))
++        {
++            LOG_ERROR("Configured external D3D12 DLSS backend is unavailable; refusing FSR fallback");
++            return false;
++        }
+         if (primaryGpu.dlssCapable && state.NVNGX_DLSS_Path.has_value())
+         {
+             *feature = std::make_unique<DLSSFeatureDx12>(handleId, parameters);
+@@ -77,6 +82,11 @@ bool FeatureProvider_Dx12::GetFeature(Upscaler upscaler, UINT handleId, NVSDK_NG
+ 
+     if (!loaded)
+     {
++        if (state.dlssExternalBackend && upscaler == Upscaler::DLSS)
++        {
++            LOG_ERROR("External D3D12 DLSS module failed to load; refusing FSR fallback");
++            return false;
++        }
+         // Fail after the constructor
+         ImGui::InsertNotification({ ImGuiToastType::Warning, 10000, "Falling back to FSR 2.1.2" });
+         *feature = std::make_unique<FSR2FeatureDx12_212>(handleId, parameters);
+-- 
+2.55.0.windows.5
+

patches/optiscaler/0002-early-d3d12-command-backend.patch

@@ -0,0 +1,45 @@
+From 7ed1f1d66b430ba35a197fbd9880cd6a76af8f06 Mon Sep 17 00:00:00 2001
+From: Codex <codex@localhost>
+Date: Thu, 1 Oct 2026 16:45:01 +0300
+Subject: [PATCH] Install the external d4r command backend before NGX
+ initialization
+
+---
+ OptiScaler/hooks/D3D12_Hooks.cpp | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+diff --git a/OptiScaler/hooks/D3D12_Hooks.cpp b/OptiScaler/hooks/D3D12_Hooks.cpp
+index 29c0bec..3b757be 100644
+--- a/OptiScaler/hooks/D3D12_Hooks.cpp
++++ b/OptiScaler/hooks/D3D12_Hooks.cpp
+@@ -14,6 +14,7 @@
+ #include <proxies/IGDExt_Proxy.h>
+ #include <proxies/Streamline_Proxy.h>
+ #include <proxies/KernelBase_Proxy.h>
++#include <proxies/NVNGX_Proxy.h>
+ 
+ #include <detours/detours.h>
+ 
+@@ -2230,6 +2231,19 @@ static void HookToDevice(ID3D12Device* InDevice)
+     if (Util::CheckForRealObject(__FUNCTION__, InDevice, (IUnknown**) &realDevice))
+         pVTable = *(PVOID**) realDevice;
+ 
++    if (State::Instance().dlssExternalBackend)
++    {
++        // Capture command signatures/resources created before the game's NGX
++        // Init. Install before adding OptiScaler's own method trampolines.
++        using InstallCommandBackend = unsigned (*)(ID3D12Device*);
++        auto install = reinterpret_cast<InstallCommandBackend>(KernelBaseProxy::GetProcAddress_()(
++            NVNGXProxy::NVNGXModule(), "d4r_D3D12_InstallCommandBackend"));
++        auto result = install ? install(realDevice ? realDevice : InDevice) : 0;
++        LOG_INFO("External d4r command backend installed at device discovery: result={:X}", result);
++        if (result != 1)
++            LOG_ERROR("External d4r early command tracking failed; DLSS initialization must be checked");
++    }
++
+     // hudless
+     o_D3D12DeviceRelease = (PFN_Release) pVTable[2];
+     o_CreateSampler = (PFN_CreateSampler) pVTable[22];
+-- 
+2.55.0.windows.5
+

patches/optiscaler/0003-legacy-project-initialization.patch

@@ -0,0 +1,37 @@
+From 09488c47855aadbf85f68ab8c72c0f3ac5f915e9 Mon Sep 17 00:00:00 2001
+From: Codex <codex@localhost>
+Date: Thu, 1 Oct 2026 17:01:32 +0300
+Subject: [PATCH] Preserve legacy ProjectID initialization in the external
+ backend
+
+---
+ OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp b/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
+index 89c9ba8..1f723f1 100644
+--- a/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
++++ b/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
+@@ -313,6 +313,8 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D12_Init_ProjectID(const char* InProj
+ 
+             if (result == NVSDK_NGX_Result_Success)
+                 NVNGXProxy::SetDx12Inited(true);
++            else if (State::Instance().dlssExternalBackend)
++                return result;
+         }
+     }
+ 
+@@ -343,6 +345,10 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D12_Init_with_ProjectID(
+ {
+     LOG_FUNC();
+ 
++    if (State::Instance().dlssExternalBackend)
++        return NVSDK_NGX_D3D12_Init_ProjectID(InProjectId, InEngineType, InEngineVersion,
++                                               InApplicationDataPath, InDevice, InSDKVersion, InFeatureInfo);
++
+     LOG_INFO("InProjectId: {0}", InProjectId);
+     LOG_INFO("InEngineType: {0}", (int) InEngineType);
+     LOG_INFO("InEngineVersion: {0}", InEngineVersion);
+-- 
+2.55.0.windows.5
+

patches/optiscaler/0004-serialize-device-hook-installation.patch

@@ -0,0 +1,34 @@
+diff --git a/OptiScaler/hooks/D3D12_Hooks.cpp b/OptiScaler/hooks/D3D12_Hooks.cpp
+index 3b757be..05fc194 100644
+--- a/OptiScaler/hooks/D3D12_Hooks.cpp
++++ b/OptiScaler/hooks/D3D12_Hooks.cpp
+@@ -2217,11 +2217,20 @@ static HRESULT hkD3D12GetInterface(REFCLSID rclsid, REFIID riid, void** ppvDebug
+     return result;
+ }
+ 
++// Device discovery and NGX initialization can overlap. Installing d4r's
++// command hooks can also create a device and re-enter this function. Never
++// overwrite live Detours trampolines from a second installation attempt.
++static std::recursive_mutex deviceHookMutex;
++static bool deviceHookInstalling = false;
+ static void HookToDevice(ID3D12Device* InDevice)
+ {
+-    if (o_CreateSampler != nullptr || InDevice == nullptr)
++    std::lock_guard<std::recursive_mutex> lock(deviceHookMutex);
++    if (o_CreateSampler != nullptr || InDevice == nullptr || deviceHookInstalling)
+         return;
+ 
++    deviceHookInstalling = true;
++    struct InstallationGuard { ~InstallationGuard() { deviceHookInstalling = false; } } installationGuard;
++
+     LOG_DEBUG("Dx12");
+ 
+     // Get the vtable pointer
+@@ -2334,6 +2343,7 @@ static void HookToDevice(ID3D12Device* InDevice)
+ 
+ static void UnhookDevice()
+ {
++    std::lock_guard<std::recursive_mutex> lock(deviceHookMutex);
+     LOG_FUNC();
+ 
+     DetourTransactionBegin();

patches/optiscaler/0005-forward-numeric-init-errors.patch

@@ -0,0 +1,22 @@
+diff --git a/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp b/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
+index 1f723f1..ef5ec77 100644
+--- a/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
++++ b/OptiScaler/inputs/NVNGX_DLSS_Dx12.cpp
+@@ -184,6 +184,8 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D12_Init_Ext(unsigned long long InApp
+ 
+             if (result == NVSDK_NGX_Result_Success)
+                 NVNGXProxy::SetDx12Inited(true);
++            else if (State::Instance().dlssExternalBackend)
++                return result;
+         }
+         else
+         {
+@@ -254,6 +256,8 @@ NVSDK_NGX_API NVSDK_NGX_Result NVSDK_NGX_D3D12_Init(unsigned long long InApplica
+ 
+             if (result == NVSDK_NGX_Result_Success)
+                 NVNGXProxy::SetDx12Inited(true);
++            else if (State::Instance().dlssExternalBackend)
++                return result;
+         }
+     }
+ 

patches/optiscaler/0006-relative-d4r-library-paths.patch

@@ -0,0 +1,30 @@
+Subject: [PATCH] Resolve relative d4r library paths against the OptiScaler folder
+
+Lets a drag-in d4r install ship OptiScaler.ini with NvngxPath=d4r instead of
+an absolute path that only an installer could know. Absolute paths behave
+exactly as before.
+---
+diff --git a/OptiScaler/Config.cpp b/OptiScaler/Config.cpp
+--- a/OptiScaler/Config.cpp
++++ b/OptiScaler/Config.cpp
+@@ -787,9 +787,17 @@
+         {
+             MainDllPath.set_from_config(readWString("Libraries", "OptiDllPath"));
+ 
+-            NvngxPath.set_from_config(readWString("Libraries", "NvngxPath"));
+-            NVNGX_DLSS_Library.set_from_config(readWString("Libraries", "NvngxDlssPath"));
+-            DLSSFeaturePath.set_from_config(readWString("Libraries", "NvngxFeaturePath"));
++            // A relative library folder (d4r drag-in installs use "d4r") is resolved
++            // against this DLL's folder, as LogFileName is. Absolute paths are unchanged.
++            auto libraryPath = [](std::optional<std::wstring> value) -> std::optional<std::wstring>
++            {
++                if (!value.has_value() || value->empty() || std::filesystem::path(*value).is_absolute())
++                    return value;
++                return (Util::DllPath().parent_path() / *value).lexically_normal().wstring();
++            };
++            NvngxPath.set_from_config(libraryPath(readWString("Libraries", "NvngxPath")));
++            NVNGX_DLSS_Library.set_from_config(libraryPath(readWString("Libraries", "NvngxDlssPath")));
++            DLSSFeaturePath.set_from_config(libraryPath(readWString("Libraries", "NvngxFeaturePath")));
+             NvapiDllPath.set_from_config(readWString("Libraries", "NvapiPath"));
+ 
+             FfxDx12Path.set_from_config(readWString("Libraries", "FfxDx12Path"));

patches/optiscaler/README.md

@@ -0,0 +1,62 @@
+# Explicit Windows d4r backend
+
+Base: OptiScaler `45a2001303ddff632e279f77aef85ceede5832cb` (2026-09-30).
+
+`0004` serializes D3D12 device hook installation/removal and guards recursive
+device discovery while the d4r command backend installs. The previous frontend
+can start two installations, fail a Detours transaction with `0x10dd`, clear
+live original-function pointers and call null. This was reproduced in the
+numeric-ID standalone harness; no game was required.
+
+`0005` propagates numeric Init/Init_Ext failures for the explicitly selected
+external backend, matching the existing ProjectID behavior. FeatureNotFound
+must fail initialization instead of being hidden until repeated CreateFeature
+attempts. `Libraries.NvngxDlssPath` takes a directory, not the DLL filename;
+the Windows installer and standalone runner now use that directory.
+The modifications to OptiScaler are GPL-3.0, matching its upstream license.
+No NVIDIA DLL is supplied or patched.
+
+`0001` introduces `[DLSS] AllowExternalBackend=true`, default false. Set
+`[Libraries] NvngxPath` to the absolute directory containing the Windows d4r
+shim as `_nvngx.dll`. Discovery requires its GPU-free ABI-1 marker. Physical
+adapter support is queried through the bridge's D3D12 requirements API after
+DLL startup; vendor, LUID and HIP architecture are retained.
+
+The configured `D4R_NGX_CORE` absolute path bypasses game-facing NGX DLL
+redirection. The external backend loads its own NVAPI provider. An explicitly
+selected external DLSS backend reports initialization/load errors instead of
+silently switching to FSR. The patch fixes the upstream loader's filesystem
+exception by making IsSubpath a lexical check, and retains a PDB for diagnosis.
+
+`0002` installs the command backend at D3D12 device discovery, before NGX Init
+and before OptiScaler's own method hooks. Command signatures created during
+game startup therefore retain their public argument descriptions for replay.
+The standalone runner's `-EarlyIndirectProbe` exercises this startup order.
+
+`0003` preserves the Project ID and engine identity through OptiScaler's
+older `Init_with_ProjectID` entry point used by its XeSS/FSR inputs. It also
+propagates an explicit external backend initialization failure. Reproduce
+with the D3D12 runner's `-NgxAbi project-legacy`.
+
+Build with Microsoft Build Tools 2022, v143 and Windows SDK 10.0.26100:
+
+```powershell
+.\scripts\windows\build-optiscaler-windows.ps1
+```
+
+The script clones the pinned source if absent, checks/applies the patch,
+initializes pinned submodules, invokes MSBuild and writes the DLL, PDB, license
+and build metadata into `dist/optiscaler-windows-d4r`. Existing source is not
+reset. The upstream packaging post-build event is disabled for this build.
+The official bootstrapper is https://aka.ms/vs/17/release/vs_buildtools.exe;
+install the `Microsoft.VisualStudio.Workload.VCTools`,
+`Microsoft.VisualStudio.Component.VC.Tools.x86.x64` and
+`Microsoft.VisualStudio.Component.Windows11SDK.26100` components. The audited
+local build uses MSVC 14.44.35207 / Build Tools 17.14.
+
+For standalone verification add
+`-OptiScalerDll <absolute-dist-path>/OptiScaler.dll -CaptureExceptions`
+to the documented K/M runner. Its private INI selects DLSS, disables frame
+generation and keeps RestoreComputeSignature, RestoreGraphicSignature and
+ExtendedStateRestore false. Use `-RequireNativeNetwork`; finite output alone
+cannot distinguish DLSS from an unwanted FSR replacement.

patches/rocm/0001-external-memory-view-ownership.patch

@@ -0,0 +1,25 @@
+From: d4r Windows port
+Subject: [PATCH] Backport AMD external-memory view ownership fix to ROCm 7.2
+
+Upstream fix: ROCm/clr 529f6b1641de436dafbb095d5438b0fbf773765d
+(ROCm/rocm-systems #3528). Already present in current upstream.
+The constructor owns reference 1. MemObjMap does not retain the view;
+hipFree removes the entry and releases reference 1. The extra retain
+leaks the view and its parent imported allocation.
+
+Hardware regression: d4r_d3d12_hip_interop_probe --interop-mode map
+--iterations 64. Windows SDK 7.2.60201 leaks one HANDLE / 256 KiB each
+cycle; tested TheRock 10.2.0a20260929 (HIP 7.17.26386) stays bounded.
+This patch is for rebuilding old runtime sources, never binary patching.
+
+diff --git a/hipamd/src/hip_memory.cpp b/hipamd/src/hip_memory.cpp
+--- a/hipamd/src/hip_memory.cpp
++++ b/hipamd/src/hip_memory.cpp
+@@ -179,7 +179,6 @@ hipError_t hipExternalMemoryGetMappedBuffer(void** devPtr, hipExternalMemory_t extMem,
+   // Map the device memory to the user pointer
+   *devPtr = reinterpret_cast<void*>(devMem->virtualAddress());
+   amd::MemObjMap::AddMemObj(*devPtr, view);
+-  view->retain();
+ 
+   HIP_RETURN(hipSuccess);
+ }

patches/zluda-llvm/0001-backport-gfx1154.patch

@@ -0,0 +1,128 @@
+diff --git a/llvm/include/llvm/BinaryFormat/ELF.h b/llvm/include/llvm/BinaryFormat/ELF.h
+index e619b186d..dd3e9d92b 100644
+--- a/llvm/include/llvm/BinaryFormat/ELF.h
++++ b/llvm/include/llvm/BinaryFormat/ELF.h
+@@ -856,7 +856,7 @@ enum : unsigned {
+   EF_AMDGPU_MACH_AMDGCN_GFX11_GENERIC   = 0x054,
+   EF_AMDGPU_MACH_AMDGCN_GFX1152         = 0x055,
+   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X56   = 0x056,
+-  EF_AMDGPU_MACH_AMDGCN_RESERVED_0X57   = 0x057,
++  EF_AMDGPU_MACH_AMDGCN_GFX1154         = 0x057,
+   EF_AMDGPU_MACH_AMDGCN_GFX1153         = 0x058,
+   EF_AMDGPU_MACH_AMDGCN_GFX12_GENERIC   = 0x059,
+   EF_AMDGPU_MACH_AMDGCN_GFX1251         = 0x05a,
+diff --git a/llvm/include/llvm/TargetParser/TargetParser.h b/llvm/include/llvm/TargetParser/TargetParser.h
+index aad985926..c0aaa465b 100644
+--- a/llvm/include/llvm/TargetParser/TargetParser.h
++++ b/llvm/include/llvm/TargetParser/TargetParser.h
+@@ -109,6 +109,7 @@ enum GPUKind : uint32_t {
+   GK_GFX1151,
+   GK_GFX1152,
+   GK_GFX1153,
++  GK_GFX1154,
+ 
+   GK_GFX1200,
+   GK_GFX1201,
+diff --git a/llvm/lib/Object/ELFObjectFile.cpp b/llvm/lib/Object/ELFObjectFile.cpp
+index f9fda2346..70ddaae22 100644
+--- a/llvm/lib/Object/ELFObjectFile.cpp
++++ b/llvm/lib/Object/ELFObjectFile.cpp
+@@ -591,6 +591,8 @@ StringRef ELFObjectFileBase::getAMDGPUCPUName() const {
+     return "gfx1152";
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1153:
+     return "gfx1153";
++  case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1154:
++    return "gfx1154";
+ 
+   // AMDGCN GFX12.
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1200:
+diff --git a/llvm/lib/ObjectYAML/ELFYAML.cpp b/llvm/lib/ObjectYAML/ELFYAML.cpp
+index d9cce1eb7..7936876f4 100644
+--- a/llvm/lib/ObjectYAML/ELFYAML.cpp
++++ b/llvm/lib/ObjectYAML/ELFYAML.cpp
+@@ -632,6 +632,7 @@ void ScalarBitSetTraits<ELFYAML::ELF_EF>::bitset(IO &IO,
+     BCaseMask(EF_AMDGPU_MACH_AMDGCN_GFX1151, EF_AMDGPU_MACH);
+     BCaseMask(EF_AMDGPU_MACH_AMDGCN_GFX1152, EF_AMDGPU_MACH);
+     BCaseMask(EF_AMDGPU_MACH_AMDGCN_GFX1153, EF_AMDGPU_MACH);
++    BCaseMask(EF_AMDGPU_MACH_AMDGCN_GFX1154, EF_AMDGPU_MACH);
+     BCaseMask(EF_AMDGPU_MACH_AMDGCN_GFX1200, EF_AMDGPU_MACH);
+     BCaseMask(EF_AMDGPU_MACH_AMDGCN_GFX1201, EF_AMDGPU_MACH);
+     BCaseMask(EF_AMDGPU_MACH_AMDGCN_GFX1250, EF_AMDGPU_MACH);
+diff --git a/llvm/lib/Target/AMDGPU/GCNProcessors.td b/llvm/lib/Target/AMDGPU/GCNProcessors.td
+index c6fb31f9c..5d21894a3 100644
+--- a/llvm/lib/Target/AMDGPU/GCNProcessors.td
++++ b/llvm/lib/Target/AMDGPU/GCNProcessors.td
+@@ -304,7 +304,12 @@ def : ProcessorModel<"gfx1153", GFX11SpeedModel,
+   FeatureISAVersion11_5_3.Features
+ >;
+ 
+-// [gfx1100, gfx1101, gfx1102, gfx1103, gfx1150, gfx1151, gfx1152, gfx1153]
++// Backported from LLVM 7a0829e41228: actual gfx1154 features and identity.
++def : ProcessorModel<"gfx1154", GFX11SpeedModel,
++  FeatureISAVersion11_5_Common.Features
++>;
++
++// [gfx1100, gfx1101, gfx1102, gfx1103, gfx1150, gfx1151, gfx1152, gfx1153, gfx1154]
+ def : ProcessorModel<"gfx11-generic", GFX11SpeedModel,
+   FeatureISAVersion11_Generic.Features
+ >;
+diff --git a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp
+index 5a0857322..c506fc308 100644
+--- a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp
++++ b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp
+@@ -114,6 +114,7 @@ StringRef AMDGPUTargetStreamer::getArchNameFromElfMach(unsigned ElfMach) {
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1151: AK = GK_GFX1151; break;
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1152: AK = GK_GFX1152; break;
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1153: AK = GK_GFX1153; break;
++  case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1154: AK = GK_GFX1154; break;
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1200: AK = GK_GFX1200; break;
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1201: AK = GK_GFX1201; break;
+   case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1250: AK = GK_GFX1250; break;
+@@ -201,6 +202,7 @@ unsigned AMDGPUTargetStreamer::getElfMach(StringRef GPU) {
+   case GK_GFX1151: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1151;
+   case GK_GFX1152: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1152;
+   case GK_GFX1153: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1153;
++  case GK_GFX1154: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1154;
+   case GK_GFX1200: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1200;
+   case GK_GFX1201: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1201;
+   case GK_GFX1250: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1250;
+diff --git a/llvm/lib/TargetParser/TargetParser.cpp b/llvm/lib/TargetParser/TargetParser.cpp
+index 34b09b14b..39acbb942 100644
+--- a/llvm/lib/TargetParser/TargetParser.cpp
++++ b/llvm/lib/TargetParser/TargetParser.cpp
+@@ -172,6 +172,7 @@ constexpr GPUInfo AMDGCNGPUs[] = {
+     {{"gfx1151"},   {"gfx1151"}, GK_GFX1151, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32|FEATURE_WAVE32|FEATURE_WGP},
+     {{"gfx1152"},   {"gfx1152"}, GK_GFX1152, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32|FEATURE_WAVE32|FEATURE_WGP},
+     {{"gfx1153"},   {"gfx1153"}, GK_GFX1153, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32|FEATURE_WAVE32|FEATURE_WGP},
++    {{"gfx1154"},   {"gfx1154"}, GK_GFX1154, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32|FEATURE_WAVE32|FEATURE_WGP},
+     {{"gfx1200"},   {"gfx1200"}, GK_GFX1200, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32|FEATURE_WAVE32|FEATURE_WGP},
+     {{"gfx1201"},   {"gfx1201"}, GK_GFX1201, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32|FEATURE_WAVE32|FEATURE_WGP},
+     {{"gfx1250"},   {"gfx1250"}, GK_GFX1250, FEATURE_FAST_FMA_F32|FEATURE_FAST_DENORMAL_F32|FEATURE_WAVE32},
+@@ -328,6 +329,7 @@ AMDGPU::IsaVersion AMDGPU::getIsaVersion(StringRef GPU) {
+   case GK_GFX1151: return {11, 5, 1};
+   case GK_GFX1152: return {11, 5, 2};
+   case GK_GFX1153: return {11, 5, 3};
++  case GK_GFX1154: return {11, 5, 4};
+   case GK_GFX1200: return {12, 0, 0};
+   case GK_GFX1201: return {12, 0, 1};
+   case GK_GFX1250: return {12, 5, 0};
+@@ -475,6 +477,7 @@ static void fillAMDGCNFeatureMap(StringRef GPU, const Triple &T,
+     Features["atomic-fmin-fmax-global-f32"] = true;
+     break;
+   case GK_GFX1153:
++  case GK_GFX1154:
+   case GK_GFX1152:
+   case GK_GFX1151:
+   case GK_GFX1150:
+diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
+index ab9331690..0ade2d412 100644
+--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
++++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
+@@ -1655,6 +1655,7 @@ const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
+   ENUM_ENT(EF_AMDGPU_MACH_AMDGCN_GFX1151, "gfx1151"),                          \
+   ENUM_ENT(EF_AMDGPU_MACH_AMDGCN_GFX1152, "gfx1152"),                          \
+   ENUM_ENT(EF_AMDGPU_MACH_AMDGCN_GFX1153, "gfx1153"),                          \
++  ENUM_ENT(EF_AMDGPU_MACH_AMDGCN_GFX1154, "gfx1154"),                          \
+   ENUM_ENT(EF_AMDGPU_MACH_AMDGCN_GFX1200, "gfx1200"),                          \
+   ENUM_ENT(EF_AMDGPU_MACH_AMDGCN_GFX1201, "gfx1201"),                          \
+   ENUM_ENT(EF_AMDGPU_MACH_AMDGCN_GFX1250, "gfx1250"),                          \

patches/zluda-llvm/README.md

@@ -0,0 +1,24 @@
+# LLVM source patches for the Windows compiler
+
+Base: ZLUDA's LLVM submodule `ff4dc1f7c9e1c64d4d69e40f4ed30c2280a96dfd`
+(LLVM 22). `build-zluda-llvm.ps1` applies these patches idempotently before
+building. ZLUDA's parent source patches remain in `patches/zluda`.
+
+`0001-backport-gfx1154.patch` adapts official LLVM
+[`7a0829e41228`](https://github.com/llvm/llvm-project/commit/7a0829e41228513299c5108685b0bc127463c6a1)
+to the older parser/ELF structures. It adds actual gfx1154 processor features,
+ISA 11.5.4, parser identity and ELF machine 0x57. It does not map gfx1154 onto
+another CPU, patch binary headers or alter existing processors' features.
+LLVM's gfx1154 uses `FeatureISAVersion11_5_Common` and the GFX11 speed model.
+LLVM code remains Apache-2.0 WITH LLVM-exception (see the dependency license).
+
+The prior offline compiler aborts on a public PTX pattern for gfx1154 with
+unrecognized-processor diagnostics and exit `0xC0000409`. After rebuilding
+LLVM, rebuild/relink ZLUDA and its offline emitter; changing native Clang
+objects alone cannot fix the translated PTX path. Run
+`scripts/windows/test-zluda-target-compilation.ps1` to compile the public
+Driver API pattern and FP16 MMA fixtures (strict/reference and WMMA modes)
+for every target without GPU work. All 33 compilations pass with correct ELF
+targets and wave32. Strict gfx12 F16 reference retains its prior FP64 helper;
+WMMA mode here is a compilation check, not a default arithmetic change.
+This checks code generation and ELF identity, not hardware execution/numerics.

patches/zluda/0008-native-windows-build.patch

@@ -0,0 +1,203 @@
+Windows LLVM-MinGW build, portable helper assertions and optional diagnostic UI.
+Apply after upstream d4r patches 0002 through 0007, on ZLUDA ee2f25a.
+
+diff --git a/ext/highs-sys/build.rs b/ext/highs-sys/build.rs
+--- a/ext/highs-sys/build.rs
++++ b/ext/highs-sys/build.rs
+@@ -66,11 +66,12 @@
+     let linux = target.contains("linux");
+     let mingw = target.contains("pc-windows-gnu");
+     if apple {
+         println!("cargo:rustc-link-lib=dylib=c++");
+     } else if linux || mingw {
+-        println!("cargo:rustc-link-lib=dylib=stdc++");
++        let cxx_library = env::var("CXXSTDLIB").unwrap_or_else(|_| "stdc++".to_owned());
++        println!("cargo:rustc-link-lib=dylib={cxx_library}");
+     }
+     println!("cargo:rerun-if-changed=../HiGHS/highs/interfaces/highs_c_api.h");
+ 
+     true
+ }
+diff --git a/ext/hip_runtime-sys/build.rs b/ext/hip_runtime-sys/build.rs
+--- a/ext/hip_runtime-sys/build.rs
++++ b/ext/hip_runtime-sys/build.rs
+@@ -1,8 +1,12 @@
+ fn main() {
+     if cfg!(windows) {
+-        println!("cargo:rustc-link-arg=/DELAYLOAD:amdhip64_7.dll");
++        if std::env::var("CARGO_CFG_TARGET_ENV").as_deref() == Ok("gnu") {
++            println!("cargo:rustc-link-arg=-Wl,--delayload=amdhip64_7.dll");
++        } else {
++            println!("cargo:rustc-link-arg=/DELAYLOAD:amdhip64_7.dll");
++        }
+     } else {
+         println!("cargo:rustc-link-lib=dylib=amdhip64");
+         println!("cargo:rustc-link-search=native=/opt/rocm/lib/");
+     }
+ }
+diff --git a/llvm_zluda/build.rs b/llvm_zluda/build.rs
+--- a/llvm_zluda/build.rs
++++ b/llvm_zluda/build.rs
+@@ -19,10 +19,18 @@
+ 
+ fn main() {
+     let bc_path1 = "src/device-libs/ockl.bc";
+     println!("cargo:rerun-if-changed={}", bc_path1);
+     check_lfs_file(bc_path1);
++
++    println!("cargo:rerun-if-env-changed=ZLUDA_LLVM_BUILD_DIR");
++    if let Some(directory) = env::var_os("ZLUDA_LLVM_BUILD_DIR") {
++        let llvm_build_path = PathBuf::from(directory);
++        println!("cargo:build-path={}", llvm_build_path.display());
++        link_prebuilt_llvm(&llvm_build_path);
++        return;
++    }
+ 
+     let mut cmake = Config::new(r"../ext/llvm-project/llvm");
+     try_use_sccache(&mut cmake);
+     try_use_ninja(&mut cmake);
+     cmake
+@@ -57,16 +65,31 @@
+         cmake.build();
+     }
+     let cmake_profile = cmake.get_profile();
+     let llvm_build_path = get_llvm_build_path(&llvm_dir, cmake_profile);
+     println!("cargo:build-path={}", llvm_build_path.display());
++    link_prebuilt_llvm(&llvm_build_path);
++}
++
++fn link_prebuilt_llvm(llvm_build_path: &PathBuf) {
+     let (cxxflags, ldflags, libdir, lib_names, system_libs) =
+         llvm_config(&llvm_build_path.join("bin/llvm-config")).unwrap();
+     println!("cargo:rustc-link-arg={ldflags}");
+     println!("cargo:rustc-link-search=native={libdir}");
+     for lib in system_libs.split_ascii_whitespace() {
+-        println!("cargo:rustc-link-arg={lib}");
++        if let Some(name) = lib.strip_prefix("-l") {
++            println!("cargo:rustc-link-lib={name}");
++        } else {
++            println!("cargo:rustc-link-arg={lib}");
++        }
++    }
++    // llvm-config omits system libraries on Windows. Propagate these through
++    // this rlib to its final cdylib consumer (link-arg alone cannot do that).
++    if env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("windows") {
++        for library in ["psapi", "shell32", "ole32", "uuid", "advapi32", "ws2_32", "ntdll"] {
++            println!("cargo:rustc-link-lib={library}");
++        }
+     }
+     link_lld_components();
+     link_llvm_components(lib_names);
+     compile_cxx_lib(cxxflags, &llvm_build_path);
+ }
+diff --git a/zluda/build.rs b/zluda/build.rs
+--- a/zluda/build.rs
++++ b/zluda/build.rs
+@@ -1,11 +1,15 @@
+ use vergen_gix::{Emitter, Gix};
+ 
+ fn main() {
+     if cfg!(windows) {
+-        println!("cargo:rustc-link-arg=delayimp.lib");
+-        println!("cargo:rustc-link-arg=/DELAYLOAD:amdhip64_7.dll");
++        if std::env::var("CARGO_CFG_TARGET_ENV").as_deref() == Ok("gnu") {
++            println!("cargo:rustc-link-arg=-Wl,--delayload=amdhip64_7.dll");
++        } else {
++            println!("cargo:rustc-link-arg=delayimp.lib");
++            println!("cargo:rustc-link-arg=/DELAYLOAD:amdhip64_7.dll");
++        }
+         let dll_path = "bin/nvcudart_hybrid64.dll";
+         println!("cargo:rerun-if-changed={}", dll_path);
+         check_lfs_file(dll_path);
+     }
+     let git = Gix::builder().sha(false).build();
+diff --git a/zluda_windows/src/lib.rs b/zluda_windows/src/lib.rs
+--- a/zluda_windows/src/lib.rs
++++ b/zluda_windows/src/lib.rs
+@@ -11,27 +11,27 @@
+ use uuid::uuid;
+ use widestring::{u16str, U16Str, U16String};
+ use windows::{
+     core::{w, HRESULT, PCWSTR},
+     Win32::{
+-        Foundation::{HANDLE, HINSTANCE, HMODULE, HWND, LPARAM, S_OK, WPARAM},
++        Foundation::{FreeLibrary, HANDLE, HINSTANCE, HMODULE, HWND, LPARAM, S_OK, WPARAM},
+         System::{
+             JobObjects::{
+                 AssignProcessToJobObject, JobObjectExtendedLimitInformation,
+                 SetInformationJobObject, JOBOBJECT_EXTENDED_LIMIT_INFORMATION,
+                 JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE,
+             },
+             LibraryLoader::{
+-                GetModuleFileNameA, GetModuleFileNameW, GetModuleHandleExW, LoadLibraryExW,
++                GetModuleFileNameA, GetModuleFileNameW, GetModuleHandleExW, GetProcAddress, LoadLibraryExW,
+                 GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
+                 GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, LOAD_LIBRARY_SEARCH_DEFAULT_DIRS,
+-                LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR,
++                LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR, LOAD_LIBRARY_SEARCH_SYSTEM32,
+             },
+         },
+         UI::{
+             Controls::{
+-                TaskDialogIndirect, TASKDIALOGCONFIG, TASKDIALOGCONFIG_0, TASKDIALOGCONFIG_1,
++                TASKDIALOGCONFIG, TASKDIALOGCONFIG_0, TASKDIALOGCONFIG_1,
+                 TASKDIALOG_NOTIFICATIONS, TDCBF_CLOSE_BUTTON, TDF_ENABLE_HYPERLINKS,
+                 TDN_HYPERLINK_CLICKED, TD_ERROR_ICON,
+             },
+             WindowsAndMessaging::IDCLOSE,
+         },
+@@ -487,11 +487,23 @@
+             pszFooter: PCWSTR::null(),
+             pfCallback: Some(task_dialog_callback),
+             lpCallbackData: 0,
+             cxWidth: 0,
+         };
+-        TaskDialogIndirect(&config, None, None, None).ok();
++        // A CUDA DLL may be loaded by an executable with no Common Controls
++        // v6 activation manifest. Do not make its diagnostic UI an eager DLL
++        // import: comctl32 v5 has no TaskDialogIndirect export.
++        if let Ok(controls) = LoadLibraryExW(w!("comctl32.dll"), None, LOAD_LIBRARY_SEARCH_SYSTEM32) {
++            if let Some(raw) = GetProcAddress(controls, windows::core::s!("TaskDialogIndirect")) {
++                let show: unsafe extern "system" fn(*const TASKDIALOGCONFIG, *mut i32, *mut i32, *mut i32) -> HRESULT =
++                    mem::transmute(raw);
++                let _ = show(&config, ptr::null_mut(), ptr::null_mut(), ptr::null_mut());
++            } else {
++                eprintln!("ZLUDA failed to load {}; set HIP_PATH to the selected HIP SDK", redirect_names[0]);
++            }
++            let _ = FreeLibrary(controls);
++        }
+     }
+     result
+ }
+ 
+ unsafe extern "system" fn task_dialog_callback(
+diff --git a/ptx/lib/zluda_ptx_impl.cpp b/ptx/lib/zluda_ptx_impl.cpp
+--- a/ptx/lib/zluda_ptx_impl.cpp
++++ b/ptx/lib/zluda_ptx_impl.cpp
+@@ -405,11 +405,26 @@
+                             uint32_t line,
+                             uint64_t function,
+                             uint64_t char_size)
+     {
+         (void)char_size;
++#if defined(_WIN32) || defined(_WIN64)
++        // HIP on Windows only supplies the wide _wassert entry point. Keep the
++        // CUDA assertion's ASCII diagnostics and trap through public OCKL APIs.
++        auto output = __ockl_fprintf_stderr_begin();
++        const char* parts[] = {"CUDA assertion: ", (const char*)message, " at ", (const char*)file,
++                               " in ", (const char*)function, "\n"};
++        for (const char* part : parts) {
++            const char* end = part;
++            while (*end) ++end;
++            output = __ockl_fprintf_append_string_n(output, part, end - part, 0);
++        }
++        __ockl_fprintf_append_args(output, 1, line, 0, 0, 0, 0, 0, 0, 1);
++        __builtin_trap();
++#else
+         [[clang::noinline]] __assert_fail((const char *)message, (const char *)file, line, (const char *)function);
++#endif
+     }
+ 
+     // * Smallest denormal is 1.4 × 10^-45
+     // * Smallest normal is ~1.175494351 × 10^(-38)
+     // * Now, 1.175494351×10^-38 / 1.4 × 10^-45  = 8396388 + 31/140

patches/zluda/0009-resource-descriptor-queries.patch

@@ -0,0 +1,124 @@
+Implement the CUDA texture resource descriptor query required by NGX Evaluate.
+Regression: tools/windows/cuda_image_probe.cpp in the d4r Windows port.
+
+diff --git a/zluda/src/lib.rs b/zluda/src/lib.rs
+--- a/zluda/src/lib.rs
++++ b/zluda/src/lib.rs
+@@ -67,12 +67,14 @@
+ cuda_macros::cuda_function_declarations!(
+     unimplemented,
+     implemented
+         <= [
+             cuArray3DCreate_v2,
++            cuArray3DGetDescriptor_v2,
+             cuArrayCreate_v2,
+             cuArrayDestroy,
++            cuArrayGetDescriptor_v2,
+             cuCtxCreate_v2,
+             cuCtxCreate_v4,
+             cuCtxDestroy_v2,
+             cuCtxGetApiVersion,
+             cuCtxGetCurrent,
+@@ -203,10 +205,11 @@
+             cuSurfObjectCreate,
+             cuSurfObjectDestroy,
+             cuSurfObjectGetResourceDesc,
+             cuTexObjectCreate,
+             cuTexObjectDestroy,
++            cuTexObjectGetResourceDesc,
+             cuTexRefSetAddress_v2,
+             cuTexRefSetAddressMode,
+             cuTexRefSetArray,
+             cuTexRefSetFilterMode,
+             cuTexRefSetFlags,
+diff --git a/zluda/src/impl/tex.rs b/zluda/src/impl/tex.rs
+--- a/zluda/src/impl/tex.rs
++++ b/zluda/src/impl/tex.rs
+@@ -1,19 +1,58 @@
+ use crate::r#impl::hipfix;
+ use hip_runtime_sys::*;
++use std::collections::HashMap;
++use std::sync::{Mutex, OnceLock};
++
++fn object_resources() -> &'static Mutex<HashMap<usize, Vec<u8>>> {
++    static RESOURCES: OnceLock<Mutex<HashMap<usize, Vec<u8>>>> = OnceLock::new();
++    RESOURCES.get_or_init(|| Mutex::new(HashMap::new()))
++}
+ 
+ pub(crate) unsafe fn object_create(
+     p_tex_object: *mut hipTextureObject_t,
+     p_res_desc: *const HIP_RESOURCE_DESC,
+     p_tex_desc: *const HIP_TEXTURE_DESC,
+     p_res_view_desc: *const HIP_RESOURCE_VIEW_DESC,
+ ) -> hipError_t {
+-    hipTexObjectCreate(p_tex_object, p_res_desc, p_tex_desc, p_res_view_desc)
++    let output = p_tex_object.as_mut().ok_or(hipErrorCode_t::InvalidValue)?;
++    let descriptor = p_res_desc.as_ref().ok_or(hipErrorCode_t::InvalidValue)?;
++    hipTexObjectCreate(output, descriptor, p_tex_desc, p_res_view_desc)?;
++    let bytes = std::slice::from_raw_parts(p_res_desc.cast::<u8>(), std::mem::size_of::<HIP_RESOURCE_DESC>()).to_vec();
++    match object_resources().lock() {
++        Ok(mut resources) => {
++            resources.insert(*output as usize, bytes);
++            Ok(())
++        }
++        Err(_) => {
++            let _ = hipDestroyTextureObject(*output);
++            *output = std::ptr::null_mut();
++            Err(hipErrorCode_t::Unknown)
++        }
++    }
+ }
+ 
+ pub(crate) unsafe fn object_destroy(tex_object: hipTextureObject_t) -> hipError_t {
+-    hipDestroyTextureObject(tex_object)
++    let mut resources = object_resources().lock().map_err(|_| hipErrorCode_t::Unknown)?;
++    if !resources.contains_key(&(tex_object as usize)) { return Err(hipErrorCode_t::InvalidValue); }
++    hipDestroyTextureObject(tex_object)?;
++    resources.remove(&(tex_object as usize));
++    Ok(())
++}
++
++pub(crate) unsafe fn object_get_resource_desc(
++    descriptor: &mut HIP_RESOURCE_DESC,
++    tex_object: hipTextureObject_t,
++) -> hipError_t {
++    // NGX probes surface handles as textures before trying the surface API.
++    // Passing that foreign handle to HIP dereferences invalid host metadata.
++    // Return a CUDA error for unknown handles and preserve the complete CUDA
++    // descriptor (HIP's query leaves the flags/reserved bytes unspecified).
++    let resources = object_resources().lock().map_err(|_| hipErrorCode_t::Unknown)?;
++    let bytes = resources.get(&(tex_object as usize)).ok_or(hipErrorCode_t::InvalidValue)?;
++    std::ptr::copy_nonoverlapping(bytes.as_ptr(), (descriptor as *mut HIP_RESOURCE_DESC).cast::<u8>(), bytes.len());
++    Ok(())
+ }
+ 
+ pub(crate) unsafe fn ref_set_array(
+     texref: *mut textureReference,
+     array: hipArray_t,
+diff --git a/zluda/src/impl/array.rs b/zluda/src/impl/array.rs
+--- a/zluda/src/impl/array.rs
++++ b/zluda/src/impl/array.rs
+@@ -70,5 +70,23 @@
+     handle: *mut hipArray_t,
+     desc: *const HIP_ARRAY3D_DESCRIPTOR,
+ ) -> hipError_t {
+     hipArray3DCreate(handle, desc)
+ }
++
++pub(crate) unsafe fn get_descriptor_v2(
++    output: &mut HIP_ARRAY_DESCRIPTOR,
++    array: hipArray_t,
++) -> hipError_t {
++    hipArrayGetDescriptor(output, array)?;
++    if let Some(format) = original_format(array)? {
++        output.Format = hipArray_Format(format);
++    }
++    Ok(())
++}
++
++pub(crate) unsafe fn _3d_get_descriptor_v2(
++    output: &mut HIP_ARRAY3D_DESCRIPTOR,
++    array: hipArray_t,
++) -> hipError_t {
++    hipArray3DGetDescriptor(output, array)
++}

patches/zluda/0010-native-identity-replay-windows-cache.patch

@@ -0,0 +1,440 @@
+Subject: [PATCH] Guard and own native overrides; capture K replay on Windows
+
+Native replacements require the upstream PTX identity manifest. Preserve native
+module/image ownership, bypass redundant JIT for completely replaced modules,
+include the loaded Windows DLL fingerprint in cache identity, and expose opt-in
+private real-weight replay captures with explicit native/translated launch logs.
+
+diff --git a/zluda/src/impl/d4r_replay.rs b/zluda/src/impl/d4r_replay.rs
+new file mode 100644
+index 0000000..875b2e3
+--- /dev/null
++++ b/zluda/src/impl/d4r_replay.rs
+@@ -0,0 +1,109 @@
++//! Opt-in, synchronous diagnostic captures. Never enabled in the game fast path.
++//! Captures can contain proprietary network weights; keep them out of releases.
++use hip_runtime_sys::*;
++use std::{collections::HashMap, ffi::{c_void, CStr}, fs, path::PathBuf, sync::{Mutex, OnceLock}};
++
++struct Config { directory: PathBuf, filter: String, limit: u32 }
++static CONFIG: OnceLock<Option<Config>> = OnceLock::new();
++static COUNTS: OnceLock<Mutex<HashMap<String, u32>>> = OnceLock::new();
++
++pub(crate) struct Capture { directory: PathBuf, allocations: Vec<(usize, usize)> }
++
++fn io_error(error: impl std::fmt::Display) -> hipErrorCode_t {
++    eprintln!("[d4r-replay] capture failed: {error}");
++    hipErrorCode_t::r#Unknown
++}
++
++impl Capture {
++    fn save(&self, destination: &std::path::Path) -> hipError_t {
++        fs::create_dir_all(destination).map_err(io_error)?;
++        for (id, &(base, size)) in self.allocations.iter().enumerate() {
++            let mut bytes = vec![0u8; size];
++            unsafe { hipMemcpyDtoH(bytes.as_mut_ptr().cast(), hipDeviceptr_t(base as *mut c_void), size) }?;
++            fs::write(destination.join(format!("alloc-{id}.bin")), bytes).map_err(io_error)?;
++        }
++        Ok(())
++    }
++
++    pub(crate) fn finish(self, stream: hipStream_t) -> hipError_t {
++        unsafe { hipStreamSynchronize(stream) }?;
++        self.save(&self.directory.join("gpu-output"))?;
++        eprintln!("[d4r-replay] complete path={}", self.directory.display());
++        Ok(())
++    }
++}
++
++pub(crate) unsafe fn begin(
++    name: &CStr, stream: hipStream_t, parameters: *mut *mut c_void,
++    extra: *mut *mut c_void, launch: [u32; 7],
++) -> Result<Option<Capture>, hipErrorCode_t> {
++    let Some(config) = CONFIG.get_or_init(|| std::env::var_os("D4R_CUDA_REPLAY_DUMP_DIR").map(|directory| Config {
++        directory: directory.into(),
++        filter: std::env::var("D4R_CUDA_REPLAY_DUMP_FILTER").unwrap_or_default(),
++        limit: std::env::var("D4R_CUDA_REPLAY_DUMP_LIMIT").ok().and_then(|s| s.parse().ok()).unwrap_or(1),
++    })) else { return Ok(None) };
++    let name = name.to_str().map_err(io_error)?;
++    // Only the audited, single 176-byte K argument ABI is captured here.
++    if !name.starts_with("dltss_pwin_") || !name.ends_with("_layer") || !name.contains(&config.filter) {
++        return Ok(None);
++    }
++    let mut block = std::ptr::null::<u8>();
++    let mut bytes = None;
++    if !extra.is_null() {
++        for i in (0..6).step_by(2) {
++            match *extra.add(i) as usize {
++                1 => block = (*extra.add(i + 1)).cast(),
++                2 => bytes = Some(*(*extra.add(i + 1) as *const usize)),
++                0 => break,
++                _ => return Err(hipErrorCode_t::r#InvalidValue),
++            }
++        }
++    } else if !parameters.is_null() {
++        block = (*parameters).cast();
++        bytes = Some(176);
++    }
++    if block.is_null() || bytes != Some(176) {
++        return Err(io_error(format!("unexpected K parameter ABI for {name}: {bytes:?}")));
++    }
++    let sequence = {
++        let mut counts = COUNTS.get_or_init(|| Mutex::new(HashMap::new())).lock().map_err(io_error)?;
++        let count = counts.entry(name.to_owned()).or_default();
++        if *count >= config.limit { return Ok(None); }
++        *count += 1;
++        *count
++    };
++    hipStreamSynchronize(stream)?;
++    let arguments = std::slice::from_raw_parts(block, 176);
++    let directory = config.directory.join(format!("replay-{sequence:06}-{name}"));
++    fs::create_dir_all(&directory).map_err(io_error)?;
++    fs::write(directory.join("args.bin"), arguments).map_err(io_error)?;
++    let mut manifest = format!("kernel {name}\nlaunch {} {} {} {} {} {} {}\nargs 176\n",
++        launch[0], launch[1], launch[2], launch[3], launch[4], launch[5], launch[6]);
++    let mut allocations = Vec::<(usize, usize)>::new();
++    for offset in (0..176).step_by(8) {
++        let pointer = u64::from_le_bytes(arguments[offset..offset + 8].try_into().unwrap()) as usize;
++        if pointer == 0 { continue; }
++        let mut base = hipDeviceptr_t(std::ptr::null_mut());
++        let mut size = 0;
++        if hipMemGetAddressRange(&mut base, &mut size, hipDeviceptr_t(pointer as *mut c_void)).is_err() { continue; }
++        let base = base.0 as usize;
++        if pointer < base || pointer - base >= size { continue; }
++        if size > 512 * 1024 * 1024 { return Err(io_error("allocation exceeds diagnostic 512 MiB limit")); }
++        let id = match allocations.iter().position(|&(b, _)| b == base) {
++            Some(id) => id,
++            None => {
++                let id = allocations.len();
++                allocations.push((base, size));
++                manifest.push_str(&format!("alloc {id} 0x{base:x} {size}\n"));
++                id
++            }
++        };
++        manifest.push_str(&format!("pointer {offset} {id} {}\n", pointer - base));
++    }
++    if allocations.is_empty() { return Err(io_error("no K allocation pointers resolved")); }
++    fs::write(directory.join("manifest.txt"), manifest).map_err(io_error)?;
++    let capture = Capture { directory, allocations };
++    capture.save(&capture.directory)?;
++    eprintln!("[d4r-replay] begin kernel={name} allocations={} path={}", capture.allocations.len(), capture.directory.display());
++    Ok(Some(capture))
++}
+diff --git a/zluda/src/impl/function.rs b/zluda/src/impl/function.rs
+index 033d9a0..7a7470a 100644
+--- a/zluda/src/impl/function.rs
++++ b/zluda/src/impl/function.rs
+@@ -7,6 +7,8 @@ use hip_runtime_sys::*;
+ use std::mem;
+ 
+ pub(crate) struct Function {
++    pub(crate) name: std::ffi::CString,
++    pub(crate) native_owner: Option<super::module::NativeModule>,
+     pub(crate) base: hipFunction_t,
+     pub(crate) sm_version: u32,
+     pub(crate) explicit_args_size_align: Option<Vec<FunctionArgInfo>>,
+@@ -144,6 +146,8 @@ pub(crate) fn launch_kernel(
+         }
+         translated_extra_storage.as_mut_ptr()
+     };
++    let replay = unsafe { super::d4r_replay::begin(&f.name, stream, kernel_params, extra,
++        [grid_dim_x, grid_dim_y, grid_dim_z, block_dim_x, block_dim_y, block_dim_z, shared_mem_bytes]) }?;
+     // the parameter block: kernel_params[0] (a single struct parameter) or the extra buffer
+     let prep_key = if let (Some(_), Some(key_offset)) = (f.prep, f.prep_key) {
+         let mut block: *const u8 = std::ptr::null();
+@@ -206,7 +210,11 @@ pub(crate) fn launch_kernel(
+     }
+     let block_dim_z = if f.block_z != 0 { f.block_z } else { block_dim_z };
+     let (grid_dim_x, grid_dim_y, grid_dim_z) = if f.grid_x != 0 { (f.grid_x, 1, 1) } else { (grid_dim_x, grid_dim_y, grid_dim_z) };
+-    unsafe {
++    if std::env::var_os("D4R_ZLUDA_VERBOSE").is_some() {
++        eprintln!("[d4r-launch] kernel={:?} backend={} grid={grid_dim_x},{grid_dim_y},{grid_dim_z} block={block_dim_x},{block_dim_y},{block_dim_z}",
++            f.name, if f.native_owner.is_some() { "native" } else { "translated" });
++    }
++    let result = unsafe {
+         hipModuleLaunchKernel(
+             f.base,
+             grid_dim_x,
+@@ -220,7 +228,10 @@ pub(crate) fn launch_kernel(
+             kernel_params,
+             extra_for_hip,
+         )
+-    }
++    };
++    result?;
++    if let Some(replay) = replay { replay.finish(stream)?; }
++    Ok(())
+ }
+ 
+ pub(crate) unsafe fn set_attribute(
+diff --git a/zluda/src/impl/library.rs b/zluda/src/impl/library.rs
+index 98be33e..1319792 100644
+--- a/zluda/src/impl/library.rs
++++ b/zluda/src/impl/library.rs
+@@ -21,8 +21,8 @@ impl Library {
+         let module_lock = self.modules.get(device).ok_or(CUerror::INVALID_DEVICE)?;
+         *module_lock.get_or_init(|| match self.data {
+             LibraryData::Lazy(lib) => {
+-                let (module, sm_version, meta32) = module::load_hip_module(lib)?;
+-                Ok(Module::new(module, sm_version, meta32).wrap())
++                let (module, sm_version, meta32, ptx_hash, native_image) = module::load_hip_module(lib)?;
++                Ok(Module::new(module, sm_version, meta32, ptx_hash, native_image).wrap())
+             }
+             LibraryData::Eager(()) => Err(CUerror::NOT_SUPPORTED),
+         })
+diff --git a/zluda/src/impl/mod.rs b/zluda/src/impl/mod.rs
+index 5329d32..14e0aee 100644
+--- a/zluda/src/impl/mod.rs
++++ b/zluda/src/impl/mod.rs
+@@ -5,6 +5,7 @@ pub(super) mod array;
+ pub(super) mod context;
+ pub(super) mod device;
+ pub(super) mod driver;
++pub(super) mod d4r_replay;
+ pub(super) mod event;
+ pub(super) mod function;
+ pub(super) mod graph;
+diff --git a/zluda/src/impl/module.rs b/zluda/src/impl/module.rs
+index 9f72f2f..5a79368 100644
+--- a/zluda/src/impl/module.rs
++++ b/zluda/src/impl/module.rs
+@@ -19,6 +19,8 @@ pub(crate) struct Module {
+     pub(crate) base: hipModule_t,
+     pub(crate) sm_version: u32,
+     pub(crate) bit32: Option<Metadata32Bit>,
++    ptx_hash: Option<u64>,
++    _native_base_image: Option<Vec<u8>>,
+     mutable: Mutex<ModuleMutable>,
+ }
+ 
+@@ -33,12 +35,14 @@ impl ModuleMutable {
+         sm_version: u32,
+         name: CString,
+         explicit_args_size_align: Option<Vec<FunctionArgInfo>>,
++        ptx_hash: Option<u64>,
+     ) -> Result<&Function, CUerror> {
+         Ok(match self.functions.entry(name) {
+             hash_map::Entry::Occupied(entry) => &*entry.into_mut(),
+             hash_map::Entry::Vacant(entry) => {
+-                let (func_handle, prep, block_z, grid_x, prep_key, prep_slots) = match native_override(entry.key()) {
+-                    Some(native) => native,
++                let mut native_owner = None;
++                let (func_handle, prep, block_z, grid_x, prep_key, prep_slots) = match native_override(entry.key(), ptx_hash) {
++                    Some((native, owner)) => { native_owner = Some(owner); native },
+                     None => {
+                         let mut func_handle = unsafe { std::mem::zeroed() };
+                         unsafe { hipModuleGetFunction(&mut func_handle, module, entry.key().as_ptr()) }?;
+@@ -46,6 +50,8 @@ impl ModuleMutable {
+                     }
+                 };
+                 let func = Box::new(Function {
++                    name: entry.key().clone(),
++                    native_owner,
+                     base: func_handle,
+                     sm_version,
+                     explicit_args_size_align,
+@@ -69,19 +75,48 @@ impl ModuleMutable {
+ /// same stream with `d4r_prep_blocks` (a u32 global in the code object) blocks of 128 threads.
+ /// An optional u32 global `d4r_block_z` replaces the launch's block z dimension, and `d4r_grid_x`
+ /// (persistent kernels, which derive the original grid from their parameters) the grid.
++pub(crate) struct NativeModule {
++    module: hipModule_t,
++    _image: Vec<u8>,
++}
++
++impl Drop for NativeModule {
++    fn drop(&mut self) {
++        if self.module.0.is_null() { return; }
++        if let Err(error) = unsafe { hipModuleUnload(self.module) } {
++            eprintln!("[d4r-native] unload failed: {error:?}");
++        }
++    }
++}
++
+ fn native_override(
+     name: &CStr,
+-) -> Option<(hipFunction_t, Option<(hipFunction_t, u32)>, u32, u32, Option<u32>, u32)> {
++    ptx_hash: Option<u64>,
++) -> Option<((hipFunction_t, Option<(hipFunction_t, u32)>, u32, u32, Option<u32>, u32), NativeModule)> {
+     let dir = std::env::var_os("D4R_ZLUDA_NATIVE_DIR")?;
++    let manifest = std::path::Path::new(&dir).join("d4r-kernels.txt");
++    let allowed = fs::read_to_string(&manifest).ok().is_some_and(|text| text.lines().any(|line| {
++        let mut fields = line.split_whitespace();
++        fields.next() == name.to_str().ok()
++            && fields.next().and_then(|s| u64::from_str_radix(s, 16).ok()) == ptx_hash
++            && ptx_hash.is_some()
++    }));
++    if !allowed {
++        eprintln!("[d4r-native] miss kernel={name:?} reason=ptx_identity hash={ptx_hash:016x?} fallback=translated");
++        return None;
++    }
+     let path = std::path::Path::new(&dir).join(format!("{}.hsaco", name.to_str().ok()?));
+-    let image = fs::read(&path).ok()?;
+-    // HIP may reference the image after loading; the override lives for the whole process.
+-    let image: &'static [u8] = Box::leak(image.into_boxed_slice());
++    let image = match fs::read(&path) {
++        Ok(image) => image,
++        Err(error) => { eprintln!("[d4r-native] miss kernel={name:?} reason=object_missing error={error} fallback=translated"); return None; }
++    };
+     let mut native_module = unsafe { mem::zeroed() };
+     if unsafe { hipModuleLoadData(&mut native_module, image.as_ptr().cast()) }.is_err() {
+         eprintln!("[d4r-native] failed to load {}", path.display());
+         return None;
+     }
++    // Keep the image and module owned by the CUfunction; release at module unload.
++    let owner = NativeModule { module: native_module, _image: image };
+     let mut func = unsafe { mem::zeroed() };
+     if unsafe { hipModuleGetFunction(&mut func, native_module, name.as_ptr()) }.is_err() {
+         eprintln!("[d4r-native] {} has no kernel {:?}", path.display(), name);
+@@ -138,7 +173,7 @@ fn native_override(
+         prep_key,
+         prep_slots
+     );
+-    Some((func, prep, block_z, grid_x, prep_key, prep_slots))
++    Some(((func, prep, block_z, grid_x, prep_key, prep_slots), owner))
+ }
+ 
+ impl ZludaObject for Module {
+@@ -229,7 +264,7 @@ pub(crate) struct Global32Bit {
+ }
+ 
+ impl Module {
+-    pub(crate) fn new(base: hipModule_t, sm_version: u32, bit32: Option<Metadata32Bit>) -> Self {
++    pub(crate) fn new(base: hipModule_t, sm_version: u32, bit32: Option<Metadata32Bit>, ptx_hash: Option<u64>, native_base_image: Option<Vec<u8>>) -> Self {
+         Self {
+             base,
+             sm_version,
+@@ -237,6 +272,8 @@ impl Module {
+                 functions: FxHashMap::default(),
+             }),
+             bit32,
++            ptx_hash,
++            _native_base_image: native_base_image,
+         }
+     }
+ 
+@@ -248,7 +285,7 @@ impl Module {
+                 .map(Vec::clone)
+         });
+         mutable
+-            .get_function(self.base, self.sm_version, name.to_owned(), explicit_args)
++            .get_function(self.base, self.sm_version, name.to_owned(), explicit_args, self.ptx_hash)
+             .map(|f| unsafe { (f as *const Function).as_ref().unwrap() })
+     }
+ }
+@@ -256,7 +293,7 @@ impl Module {
+ fn get_best_ptx_and_compile(
+     global_state: &GlobalState,
+     image: CodeLibraryRef<'_>,
+-) -> Result<(hipModule_t, u32, Option<Metadata32Bit>), CUerror> {
++) -> Result<(hipModule_t, u32, Option<Metadata32Bit>, Option<u64>, Option<Vec<u8>>), CUerror> {
+     let mut ptx_modules = Vec::new();
+     unsafe {
+         CodeLibraryRef::iterate_modules(image, |_, module| match module {
+@@ -280,7 +317,7 @@ fn get_best_ptx_and_compile(
+         let dump_dir = std::path::PathBuf::from(dump_dir);
+         let _ = fs::create_dir_all(&dump_dir);
+         for (index, source) in ptx_modules.iter().enumerate() {
+-            let stem = format!("module-{index:04}");
++            let stem = format!("module-{:016x}-{index:04}", ptx_identity(source));
+             let _ = fs::write(dump_dir.join(format!("{stem}.ptx")), source.as_bytes());
+             let diagnostic = match ptx_parser::parse_module_checked(source.as_ref()) {
+                 Ok(ast) => format!(
+@@ -345,6 +382,32 @@ fn get_best_ptx_and_compile(
+             )
+         }
+     };
++    let ptx_hash = text.map(|source| ptx_identity(source));
++    // A fully replaced, single-entry module needs no translated binary. LDS
++    // declarations belong to the replaced kernel; exported globals do not.
++    let only_kernel_and_lds = module.directives.iter().all(|directive| match directive {
++        ptx_parser::Directive::Method(_, method) => method.func_directive.name.is_kernel(),
++        ptx_parser::Directive::Variable(_, variable) => matches!(variable.info.state_space, ptx_parser::StateSpace::Shared),
++    });
++    let entries: Vec<_> = module.directives.iter().filter_map(|directive| match directive {
++        ptx_parser::Directive::Method(_, method) => Some(method), _ => None,
++    }).collect();
++    if module.address_size == 64 && only_kernel_and_lds && entries.len() == 1 {
++        let method = entries[0];
++        {
++            if method.func_directive.name.is_kernel() {
++                if let Ok(name) = CString::new(method.func_directive.name.text()) {
++                    if let Some((_, mut owner)) = native_override(&name, ptx_hash) {
++                        let base = owner.module;
++                        owner.module = hipModule_t(std::ptr::null_mut());
++                        let image = mem::take(&mut owner._image);
++                        eprintln!("[d4r-native] module_direct kernel={name:?} translated_jit=skipped");
++                        return Ok((base, module.sm_version, None, ptx_hash, Some(image)));
++                    }
++                }
++            }
++        }
++    }
+     // TODO: get this information on initialization
+     let hip_properties = get_hip_properties()?;
+     let gcn_arch = get_gcn_arch(&hip_properties)?;
+@@ -372,7 +435,12 @@ fn get_best_ptx_and_compile(
+         .or_else(|_| compile_and_cache(gcn_arch, attributes, module, &mut cache_with_key))?;
+     let mut hip_module = unsafe { mem::zeroed() };
+     unsafe { hipModuleLoadData(&mut hip_module, elf_module.as_ptr().cast()) }?;
+-    Ok((hip_module, sm_version, zluda32))
++    Ok((hip_module, sm_version, zluda32, ptx_hash, None))
++}
++
++fn ptx_identity(text: &str) -> u64 {
++    text.trim_end_matches('\0').bytes().fold(0xcbf29ce484222325u64, |hash, byte|
++        (hash ^ u64::from(byte)).wrapping_mul(0x100000001b3))
+ }
+ 
+ fn cow_bytes_to_str<'a>(data: Cow<'a, [u8]>) -> Option<Cow<'a, str>> {
+@@ -384,7 +452,7 @@ fn cow_bytes_to_str<'a>(data: Cow<'a, [u8]>) -> Option<Cow<'a, str>> {
+ 
+ pub(crate) fn load_hip_module(
+     library: CodeLibraryRef,
+-) -> Result<(hipModule_t, u32, Option<Metadata32Bit>), CUerror> {
++) -> Result<(hipModule_t, u32, Option<Metadata32Bit>, Option<u64>, Option<Vec<u8>>), CUerror> {
+     let global_state = driver::global_state()?;
+     get_best_ptx_and_compile(global_state, library)
+ }
+@@ -434,7 +502,7 @@ fn zluda_build_version() -> &'static str {
+                 key.starts_with("D4R_ZLUDA_")
+                     && !matches!(
+                         key.as_str(),
+-                        "D4R_ZLUDA_NATIVE_DIR" | "D4R_ZLUDA_DIR" | "D4R_ZLUDA_DUMP_DIR" | "D4R_ZLUDA_DUMP_PTX_DIR" | "D4R_ZLUDA_LIBCUDA"
++                        "D4R_ZLUDA_NATIVE_DIR" | "D4R_ZLUDA_DIR" | "D4R_ZLUDA_DUMP_DIR" | "D4R_ZLUDA_DUMP_PTX_DIR" | "D4R_ZLUDA_LIBCUDA" | "D4R_ZLUDA_VERBOSE"
+                             | "D4R_ZLUDA_WMMA_FP8_NATIVE" // keyed by effect (ExtraCacheAttributes)
+                     )
+             })
+@@ -469,7 +537,10 @@ fn loaded_library_fingerprint() -> Option<String> {
+ 
+ #[cfg(windows)]
+ fn loaded_library_fingerprint() -> Option<String> {
+-    None
++    let path = zluda_windows::get_module_path_for_function(zluda_build_version as *const () as usize)?;
++    let metadata = fs::metadata(path).ok()?;
++    let timestamp = metadata.modified().ok()?.duration_since(std::time::UNIX_EPOCH).ok()?;
++    Some(format!("{:x}.{:x}.{:x}", metadata.len(), timestamp.as_secs(), timestamp.subsec_nanos()))
+ }
+ 
+ fn get_cache_key<'a, 'b>(
+@@ -577,16 +648,16 @@ pub(crate) fn load(module: &mut CUmodule, fname: &CStr) -> CUresult {
+     image.push(0);
+     let library = unsafe { CodeLibraryRef::try_load(image.as_ptr() as *const std::ffi::c_void) }
+         .map_err(|_| CUerror::NO_BINARY_FOR_GPU)?;
+-    let (hip_module, sm_version, meta32) = load_hip_module(library)?;
+-    *module = Module::new(hip_module, sm_version, meta32).wrap();
++    let (hip_module, sm_version, meta32, ptx_hash, native_image) = load_hip_module(library)?;
++    *module = Module::new(hip_module, sm_version, meta32, ptx_hash, native_image).wrap();
+     Ok(())
+ }
+ 
+ pub(crate) fn load_data(module: &mut CUmodule, image: &std::ffi::c_void) -> CUresult {
+     let library =
+         unsafe { CodeLibraryRef::try_load(image) }.map_err(|_| CUerror::NO_BINARY_FOR_GPU)?;
+-    let (hip_module, sm_version, meta32) = load_hip_module(library)?;
+-    *module = Module::new(hip_module, sm_version, meta32).wrap();
++    let (hip_module, sm_version, meta32, ptx_hash, native_image) = load_hip_module(library)?;
++    *module = Module::new(hip_module, sm_version, meta32, ptx_hash, native_image).wrap();
+     Ok(())
+ }
+ 

patches/zluda/0011-audited-k-m-windows-replay.patch

@@ -0,0 +1,93 @@
+diff --git a/zluda/src/impl/d4r_replay.rs b/zluda/src/impl/d4r_replay.rs
+index 875b2e3..d491ae2 100644
+--- a/zluda/src/impl/d4r_replay.rs
++++ b/zluda/src/impl/d4r_replay.rs
+@@ -7,6 +7,18 @@ struct Config { directory: PathBuf, filter: String, limit: u32 }
+ static CONFIG: OnceLock<Option<Config>> = OnceLock::new();
+ static COUNTS: OnceLock<Mutex<HashMap<String, u32>>> = OnceLock::new();
+ 
++fn parameter_size(name: &str) -> Option<usize> {
++    match name {
++        "dltss_pwin_enc0_layer" | "dltss_pwin_enc1_layer" | "dltss_pwin_enc2_layer" |
++        "dltss_pwin_enc3_layer" | "dltss_pwin_enc4_layer" | "dltss_pwin_dec5_layer" |
++        "dltss_pwin_dec4_layer" | "dltss_pwin_dec3_layer" | "dltss_pwin_dec2_layer" |
++        "dltss_pwin_dec1_layer" | "dltss_pwin_dec0_layer" => Some(176),
++        "rrlite_enc1_4x4" | "rrlite_enc2_4x4" | "rrlite_dec2_4x4" | "rrlite_dec1_4x4" => Some(56),
++        "rrlite_enc3_tube_4x4" => Some(88),
++        _ => None,
++    }
++}
++
+ pub(crate) struct Capture { directory: PathBuf, allocations: Vec<(usize, usize)> }
+ 
+ fn io_error(error: impl std::fmt::Display) -> hipErrorCode_t {
+@@ -43,8 +55,10 @@ pub(crate) unsafe fn begin(
+         limit: std::env::var("D4R_CUDA_REPLAY_DUMP_LIMIT").ok().and_then(|s| s.parse().ok()).unwrap_or(1),
+     })) else { return Ok(None) };
+     let name = name.to_str().map_err(io_error)?;
+-    // Only the audited, single 176-byte K argument ABI is captured here.
+-    if !name.starts_with("dltss_pwin_") || !name.ends_with("_layer") || !name.contains(&config.filter) {
++    // Only audited single-by-value K/M argument blocks. Never infer the size
++    // from a prefix: reading a different kernel's parameters can overrun host memory.
++    let Some(parameter_bytes) = parameter_size(name) else { return Ok(None); };
++    if !name.contains(&config.filter) {
+         return Ok(None);
+     }
+     let mut block = std::ptr::null::<u8>();
+@@ -60,10 +74,10 @@ pub(crate) unsafe fn begin(
+         }
+     } else if !parameters.is_null() {
+         block = (*parameters).cast();
+-        bytes = Some(176);
++        bytes = Some(parameter_bytes);
+     }
+-    if block.is_null() || bytes != Some(176) {
+-        return Err(io_error(format!("unexpected K parameter ABI for {name}: {bytes:?}")));
++    if block.is_null() || bytes != Some(parameter_bytes) {
++        return Err(io_error(format!("unexpected parameter ABI for {name}: {bytes:?}, expected {parameter_bytes}")));
+     }
+     let sequence = {
+         let mut counts = COUNTS.get_or_init(|| Mutex::new(HashMap::new())).lock().map_err(io_error)?;
+@@ -73,14 +87,14 @@ pub(crate) unsafe fn begin(
+         *count
+     };
+     hipStreamSynchronize(stream)?;
+-    let arguments = std::slice::from_raw_parts(block, 176);
++    let arguments = std::slice::from_raw_parts(block, parameter_bytes);
+     let directory = config.directory.join(format!("replay-{sequence:06}-{name}"));
+     fs::create_dir_all(&directory).map_err(io_error)?;
+     fs::write(directory.join("args.bin"), arguments).map_err(io_error)?;
+-    let mut manifest = format!("kernel {name}\nlaunch {} {} {} {} {} {} {}\nargs 176\n",
++    let mut manifest = format!("kernel {name}\nlaunch {} {} {} {} {} {} {}\nargs {parameter_bytes}\n",
+         launch[0], launch[1], launch[2], launch[3], launch[4], launch[5], launch[6]);
+     let mut allocations = Vec::<(usize, usize)>::new();
+-    for offset in (0..176).step_by(8) {
++    for offset in (0..parameter_bytes).step_by(8) {
+         let pointer = u64::from_le_bytes(arguments[offset..offset + 8].try_into().unwrap()) as usize;
+         if pointer == 0 { continue; }
+         let mut base = hipDeviceptr_t(std::ptr::null_mut());
+@@ -100,10 +114,23 @@ pub(crate) unsafe fn begin(
+         };
+         manifest.push_str(&format!("pointer {offset} {id} {}\n", pointer - base));
+     }
+-    if allocations.is_empty() { return Err(io_error("no K allocation pointers resolved")); }
++    if allocations.is_empty() { return Err(io_error("no allocation pointers resolved")); }
+     fs::write(directory.join("manifest.txt"), manifest).map_err(io_error)?;
+     let capture = Capture { directory, allocations };
+     capture.save(&capture.directory)?;
+     eprintln!("[d4r-replay] begin kernel={name} allocations={} path={}", capture.allocations.len(), capture.directory.display());
+     Ok(Some(capture))
+ }
++
++#[cfg(test)]
++mod tests {
++    #[test]
++    fn only_audited_argument_sizes() {
++        assert_eq!(super::parameter_size("dltss_pwin_enc0_layer"), Some(176));
++        assert_eq!(super::parameter_size("rrlite_dec2_4x4"), Some(56));
++        assert_eq!(super::parameter_size("rrlite_enc3_tube_4x4"), Some(88));
++        assert_eq!(super::parameter_size("dltss_pwin_enc0_layer_prep"), None);
++        assert_eq!(super::parameter_size("rrlite_enc3_tube_4x4_prep"), None);
++        assert_eq!(super::parameter_size("dltss_pwin_unknown_layer"), None);
++    }
++}

patches/zluda/0012-configurable-windows-jit-cache.patch

@@ -0,0 +1,65 @@
+diff --git a/zluda_cache/src/lib.rs b/zluda_cache/src/lib.rs
+index acd262e..c3ac1be 100644
+--- a/zluda_cache/src/lib.rs
++++ b/zluda_cache/src/lib.rs
+@@ -22,18 +22,36 @@ pub struct ModuleCache(SqliteConnection);
+ 
+ impl ModuleCache {
+     pub fn create_cache_dir_and_get_path() -> Option<String> {
+-        let mut cache_dir = dirs::cache_dir()?;
+-        cache_dir.extend(["zluda", "ComputeCache"]);
++        let override_dir = std::env::var_os("ZLUDA_CACHE_DIR");
++        let cache_dir = match override_dir {
++            Some(path) => {
++                let path = std::path::PathBuf::from(path);
++                if !path.is_absolute() {
++                    eprintln!("[zluda-cache] ZLUDA_CACHE_DIR must be absolute; cache disabled");
++                    return None;
++                }
++                path
++            }
++            None => dirs::cache_dir()?.join("zluda").join("ComputeCache"),
++        };
++        Self::cache_path(&cache_dir)
++    }
++
++    fn cache_path(cache_dir: &std::path::Path) -> Option<String> {
+         // We ensure that the cache directory exists
+-        std::fs::create_dir_all(&cache_dir).ok()?;
++        if let Err(error) = std::fs::create_dir_all(cache_dir) {
++            eprintln!("[zluda-cache] cannot create {}: {error}; cache disabled", cache_dir.display());
++            return None;
++        }
+         // No need to create the file, it will be created by SQLite on first access
+         // zluda.db might be in use by older versions of ZLUDA
+-        cache_dir.push("zluda2.db");
+-        Some(cache_dir.to_string_lossy().into())
++        Some(cache_dir.join("zluda2.db").to_string_lossy().into())
+     }
+ 
+     pub fn open(file_path: &str) -> Option<Self> {
+-        let mut conn = SqliteConnection::establish(file_path).ok()?;
++        let mut conn = SqliteConnection::establish(file_path).map_err(|error| {
++            eprintln!("[zluda-cache] cannot open {file_path}: {error}; cache disabled");
++        }).ok()?;
+         conn.batch_execute("PRAGMA journal_mode = WAL; PRAGMA synchronous = NORMAL;")
+             .ok()?;
+         conn.run_pending_migrations(MIGRATIONS).ok()?;
+@@ -86,6 +104,17 @@ mod tests {
+     use arrayvec::ArrayString;
+     use diesel::prelude::*;
+ 
++    #[test]
++    fn explicit_directory_creates_persistent_database() {
++        let directory = std::env::temp_dir().join(format!("zluda-cache-test-{}-{}", std::process::id(), ModuleCache::time_now()));
++        let path = ModuleCache::cache_path(&directory).unwrap();
++        assert_eq!(std::path::Path::new(&path), directory.join("zluda2.db"));
++        let cache = ModuleCache::open(&path).unwrap();
++        drop(cache);
++        assert!(std::path::Path::new(&path).is_file());
++        std::fs::remove_dir_all(directory).unwrap();
++    }
++
+     #[derive(Queryable, Selectable)]
+     #[diesel(table_name = crate::schema::modules)]
+     #[diesel(check_for_backend(diesel::sqlite::Sqlite))]

patches/zluda/0013-gfx12-f16-reference-accumulation.patch

@@ -0,0 +1,151 @@
+diff --git a/llvm_zluda/src/compile.rs b/llvm_zluda/src/compile.rs
+index 5a54417..90c0034 100644
+--- a/llvm_zluda/src/compile.rs
++++ b/llvm_zluda/src/compile.rs
+@@ -158,6 +158,10 @@ fn wmma_rewrite_flags(gcn_arch: &str) -> Option<u32> {
+     let mut flags = if wmma_fp8_rewrite_requested() { 1 } else { 0 };
+     if family == 12 {
+         flags |= 2;
++        // Explicit diagnostic/correctness mode; retain upstream's fast default.
++        if std::env::var("D4R_ZLUDA_WMMA_F16_REFERENCE").is_ok_and(|value| value.trim() == "1") {
++            flags |= 8;
++        }
+         // native FP8 needs gfx12 hardware; the layout shim on gfx11 takes it only for tests (D4R_WMMA12_SHIM)
+         if flags & 1 != 0 && wmma_fp8_native_requested() {
+             flags |= 4;
+diff --git a/llvm_zluda/src/lib.cpp b/llvm_zluda/src/lib.cpp
+index 07238db..d262fc6 100644
+--- a/llvm_zluda/src/lib.cpp
++++ b/llvm_zluda/src/lib.cpp
+@@ -970,6 +970,7 @@ static unsigned widenMmaK8(Module *M)
+ // Flags bit 0: also lower m16n8k32 e4m3 MMAs (D4R_ZLUDA_WMMA_FP8=1).
+ // Flags bit 1: gfx12 (RDNA4) WMMA layout: the d4r_wmma12_* helpers.
+ // Flags bit 2 (with bit 1): e4m3 MMAs on native FP8 WMMA: the d4r_wmma12f8_* e4m3 helpers.
++// Flags bit 3 (with bit 1): f64 sum / one f16 round for f16 accumulator MMAs.
+ // The helper sets share one contract (see zluda_ptx_impl.cpp), so only their names change here.
+ unsigned LLVMZludaRewriteMmaF16Wmma(LLVMModuleRef ModuleRef, unsigned Flags)
+ {
+@@ -999,14 +1000,15 @@ unsigned LLVMZludaRewriteMmaF16Wmma(LLVMModuleRef ModuleRef, unsigned Flags)
+     const std::string Arch = Gfx12 ? "__zluda_ptx_impl_d4r_wmma12_" : "__zluda_ptx_impl_d4r_wmma_";
+     const std::string E4m3 = NativeFp8 ? "__zluda_ptx_impl_d4r_wmma12f8_" : Arch;
+     const std::string Widen = NativeFp8 ? E4m3 : "__zluda_ptx_impl_d4r_wmma_";
++    const std::string F16 = Arch + (Gfx12 && (Flags & 8) != 0 ? "t_mma_f16_reference" : "t_mma_f16");
+     Helpers H;
+     H.AFromB = M->getOrInsertFunction((Arch + "t_a_from_b").c_str(), Attributes, V8, V2);
+     H.BFromA = M->getOrInsertFunction((Arch + "t_b_from_a").c_str(), Attributes, V8, V4);
+-    H.Mma = M->getOrInsertFunction((Arch + "t_mma_f16").c_str(), Attributes, V2, V8, V8, V2);
++    H.Mma = M->getOrInsertFunction(F16.c_str(), Attributes, V2, V8, V8, V2);
+     H.FromNv = M->getOrInsertFunction("__zluda_ptx_impl_d4r_wmma_t_from_nv", Attributes, V2, V2);
+     H.ToNv = M->getOrInsertFunction("__zluda_ptx_impl_d4r_wmma_t_to_nv", Attributes, V2, V2);
+     H.AFromBPair = M->getOrInsertFunction((Arch + "t_a_from_b_pair").c_str(), Attributes, V8, V2, V2);
+-    H.MmaPair = M->getOrInsertFunction((Arch + "t_mma_f16_pair").c_str(), Attributes, V4, V8, V8, V2, V2);
++    H.MmaPair = M->getOrInsertFunction((F16 + "_pair").c_str(), Attributes, V4, V8, V8, V2, V2);
+     {
+         Type *F = Type::getFloatTy(Context);
+         Type *V4F = FixedVectorType::get(F, 4);
+diff --git a/ptx/lib/zluda_ptx_impl.cpp b/ptx/lib/zluda_ptx_impl.cpp
+index 4ff25dd..36bd6b1 100644
+--- a/ptx/lib/zluda_ptx_impl.cpp
++++ b/ptx/lib/zluda_ptx_impl.cpp
+@@ -1801,6 +1801,78 @@ __device__ static wmma_float8 wmma12_f16(wmma_uint8 a, wmma_uint8 b, wmma_float8
+ #endif
+ }
+ 
++// Correctness baseline for f16-accumulator MMAs. f32 WMMA accumulation may
++// reach the other f16 neighbour around cancellation-heavy rounding midpoints.
++// Keep the existing gfx12 gathers/layout; sum their f16 operands in f64 and
++// round directly to f16 once, matching d4r's independent NumPy/PTX reference.
++// The e4m3 and f32-shadow paths continue using native WMMA.
++__device__ static double wmma12_half_value(uint32_t bits)
++{
++    const uint32_t magnitude = bits & 0x7fffu, exponent = magnitude >> 10;
++    const double value = exponent == 0 ? double(magnitude) * 0x1p-24 :
++        double(std::bit_cast<float>(exponent == 31 ? (0x7f800000u | ((magnitude & 1023u) << 13)) :
++                                     ((magnitude << 13) + 0x38000000u)));
++    return bits & 0x8000u ? -value : value;
++}
++
++// Preserve f16 subnormal result bits even when the target's default f16
++// arithmetic mode flushes them. No intermediate f32 rounding is involved.
++__device__ static uint32_t wmma12_half_round(double value)
++{
++    const uint64_t bits = std::bit_cast<uint64_t>(value);
++    const uint32_t sign = uint32_t(bits >> 48) & 0x8000u;
++    const uint32_t exponent = uint32_t((bits >> 52) & 2047u);
++    const uint64_t fraction = bits & 0xfffffffffffffu;
++    if (exponent == 2047u) return sign | (fraction ? 0x7e00u : 0x7c00u);
++    const int power = int(exponent) - 1023;
++    if (power < -25) return sign;
++    if (power > 15) return sign | 0x7c00u;
++    const unsigned shift = power < -14 ? unsigned(28 - power) : 42u;
++    const uint64_t significand = fraction | 0x10000000000000ull;
++    uint32_t code = uint32_t(significand >> shift);
++    const uint64_t tail = significand & ((uint64_t(1) << shift) - 1);
++    const uint64_t midpoint = uint64_t(1) << (shift - 1);
++    code += tail > midpoint || (tail == midpoint && (code & 1u));
++    if (power >= -14) code += uint32_t(power + 14) << 10;
++    return sign | code;
++}
++
++__device__ static wmma_uint4 wmma12_reference_c(uint2::Native_vec_ c0, uint2::Native_vec_ c1, bool paired)
++{
++    const bool high = wmma12_half() != 0;
++    const uint2::Native_vec_ own = paired && high ? c1 : c0;
++    const uint2::Native_vec_ send = paired && !high ? c1 : c0;
++    const uint2::Native_vec_ other = {wmma12_other_half(send.x), wmma12_other_half(send.y)};
++    const uint2::Native_vec_ even = paired && high ? other : own;
++    const uint2::Native_vec_ odd = paired && high ? own : other;
++    return {(even.x & 0xffffu) | (odd.x << 16), (even.x >> 16) | (odd.x & 0xffff0000u),
++            (even.y & 0xffffu) | (odd.y << 16), (even.y >> 16) | (odd.y & 0xffff0000u)};
++}
++
++__device__ static wmma_uint4 wmma12_f16_reference(wmma_uint8 a, wmma_uint8 b, wmma_uint4 c)
++{
++    // x/y: packed even rows, z/w: packed odd rows, in this half-wave.
++    wmma_uint4 result = {};
++    const uint32_t half = wmma12_half();
++    for (uint32_t i = 0; i < 8; ++i)
++    {
++        const uint32_t row = i + 8 * half;
++        double sum = wmma12_half_value((c[i / 2] >> (16 * (i & 1))) & 0xffffu);
++        for (uint32_t khalf = 0; khalf < 2; ++khalf)
++            for (uint32_t j = 0; j < 4; ++j)
++            {
++                const uint32_t av = wmma_from_lane(row + 16 * khalf, a[j]);
++                const uint32_t other = wmma12_other_half(b[j]);
++                const uint32_t bv = half == khalf ? b[j] : other;
++                sum += wmma12_half_value(av & 0xffffu) * wmma12_half_value(bv & 0xffffu);
++                sum += wmma12_half_value(av >> 16) * wmma12_half_value(bv >> 16);
++            }
++        // Do not round through f32: that can reintroduce the midpoint error.
++        result[(i & 1) * 2 + i / 4] |= wmma12_half_round(sum) << (16 * ((i / 2) & 1));
++    }
++    return result;
++}
++
+ // f32 D' = A' B' + C' for operands whose dwords hold two e4m3 bytes in their low 16 bits (the d4r_wmma12f8
+ // e4m3 "widening" below keeps the bytes): true e4m3 values, no scaling
+ __device__ static wmma_float8 wmma12_e4m3(wmma_uint8 a, wmma_uint8 b, wmma_float8 c)
+@@ -1959,6 +2031,22 @@ extern "C"
+         return wmma12_t_from_d_pair(wmma12_f16(a_t, b_t, wmma12_c_from_t_pair(c0_t, c1_t)));
+     }
+ 
++    uint2::Native_vec_ FUNC(d4r_wmma12_t_mma_f16_reference)(wmma_uint8 a_t, wmma_uint8 b_t, uint2::Native_vec_ c_t)
++    {
++        const wmma_uint4 rows = wmma12_f16_reference(a_t, b_t, wmma12_reference_c(c_t, c_t, false));
++        const uint2::Native_vec_ other = {wmma12_other_half(rows.z), wmma12_other_half(rows.w)};
++        return wmma12_half() ? other : uint2::Native_vec_{rows.x, rows.y};
++    }
++
++    uint4::Native_vec_ FUNC(d4r_wmma12_t_mma_f16_reference_pair)(wmma_uint8 a_t, wmma_uint8 b_t, uint2::Native_vec_ c0_t, uint2::Native_vec_ c1_t)
++    {
++        const wmma_uint4 rows = wmma12_f16_reference(a_t, b_t, wmma12_reference_c(c0_t, c1_t, true));
++        const bool high = wmma12_half() != 0;
++        const uint32_t r0 = wmma12_other_half(high ? rows.x : rows.z);
++        const uint32_t r1 = wmma12_other_half(high ? rows.y : rows.w);
++        return high ? uint4::Native_vec_{r0, r1, rows.z, rows.w} : uint4::Native_vec_{rows.x, rows.y, r0, r1};
++    }
++
+     wmma_float4 FUNC(d4r_wmma12_s_mma_f16)(wmma_uint8 a_t, wmma_uint8 b_t, wmma_float4 c, float up, float down)
+     {
+         return wmma12_s_from_d(wmma12_f16(a_t, b_t, wmma12_c_from_s(c * up))) * down;

patches/zluda/0014-windows-kernel-profiling.patch

@@ -0,0 +1,148 @@
+From b0161a4166652eee86a8113a38d042b02403db6e Mon Sep 17 00:00:00 2001
+From: Codex <codex@localhost>
+Date: Thu, 1 Oct 2026 18:07:07 +0300
+Subject: [PATCH] Add opt-in Windows HIP event and occupancy diagnostics
+
+---
+ zluda/src/impl/d4r_profile.rs | 60 +++++++++++++++++++++++++++++++++++
+ zluda/src/impl/function.rs    |  9 ++++++
+ zluda/src/impl/mod.rs         |  1 +
+ zluda/src/impl/module.rs      |  2 +-
+ 4 files changed, 71 insertions(+), 1 deletion(-)
+ create mode 100644 zluda/src/impl/d4r_profile.rs
+
+diff --git a/zluda/src/impl/d4r_profile.rs b/zluda/src/impl/d4r_profile.rs
+new file mode 100644
+index 0000000..33ba5f6
+--- /dev/null
++++ b/zluda/src/impl/d4r_profile.rs
+@@ -0,0 +1,60 @@
++//! Optional, deliberately serializing HIP-event diagnostics. Not a production
++//! scheduler or a claim about application FPS / measured hardware occupancy.
++use hip_runtime_sys::*;
++use std::{ffi::CStr, ptr, time::Instant};
++
++pub(super) struct Launch {
++    start: hipEvent_t,
++    end: hipEvent_t,
++    host: Instant,
++}
++
++impl Drop for Launch {
++    fn drop(&mut self) {
++        unsafe {
++            if !self.end.is_null() { let _ = hipEventDestroy(self.end); }
++            if !self.start.is_null() { let _ = hipEventDestroy(self.start); }
++        }
++    }
++}
++
++impl Launch {
++    pub(super) unsafe fn begin(stream: hipStream_t) -> Result<Option<Self>, hipErrorCode_t> {
++        if std::env::var_os("D4R_ZLUDA_PROFILE").is_none() { return Ok(None); }
++        let mut result = Self { start: ptr::null_mut(), end: ptr::null_mut(), host: Instant::now() };
++        hipEventCreateWithFlags(&mut result.start, 0)?;
++        hipEventCreateWithFlags(&mut result.end, 0)?;
++        hipEventRecord(result.start, stream)?;
++        result.host = Instant::now();
++        Ok(Some(result))
++    }
++
++    pub(super) unsafe fn finish(self, function: hipFunction_t, name: &CStr, backend: &str,
++        phase: &str, grid: [u32;3], block: [u32;3], shared: u32, stream: hipStream_t) -> hipError_t {
++        let enqueue_ms = self.host.elapsed().as_secs_f64() * 1000.;
++        hipEventRecord(self.end, stream)?;
++        hipEventSynchronize(self.end)?;
++        let completion_ms = self.host.elapsed().as_secs_f64() * 1000.;
++        let mut gpu_ms = 0.;
++        hipEventElapsedTime(&mut gpu_ms, self.start, self.end)?;
++        // Module function handles use the Driver API attribute query. The
++        // plural Runtime API expects a registered host function address.
++        let mut lds = 0;
++        let mut regs = 0;
++        let mut private = 0;
++        let mut max_threads = 0;
++        hipFuncGetAttribute(&mut lds, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_SHARED_SIZE_BYTES, function)?;
++        hipFuncGetAttribute(&mut regs, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_NUM_REGS, function)?;
++        hipFuncGetAttribute(&mut private, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_LOCAL_SIZE_BYTES, function)?;
++        hipFuncGetAttribute(&mut max_threads, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_MAX_THREADS_PER_BLOCK, function)?;
++        let threads = block.iter().try_fold(1u32, |a, b| a.checked_mul(*b))
++            .filter(|n| *n <= i32::MAX as u32).ok_or(hipErrorCode_t::InvalidValue)?;
++        let mut blocks_per_multiprocessor = 0;
++        hipModuleOccupancyMaxActiveBlocksPerMultiprocessor(&mut blocks_per_multiprocessor,
++            function, threads as i32, shared as usize)?;
++        eprintln!("D4R_KERNEL_PROFILE kernel={name:?} backend={backend} phase={phase} gpu_ms={gpu_ms:.6} enqueue_ms={enqueue_ms:.6} completion_ms={completion_ms:.6} grid={},{},{} block={},{},{} static_lds_bytes={} dynamic_lds_bytes={shared} regs={} private_bytes={} max_threads={} predicted_blocks_per_multiprocessor={blocks_per_multiprocessor} serializing=1",
++            grid[0], grid[1], grid[2], block[0], block[1], block[2], lds,
++            regs, private, max_threads);
++        Ok(())
++    }
++}
+diff --git a/zluda/src/impl/function.rs b/zluda/src/impl/function.rs
+index 7a7470a..c456dfe 100644
+--- a/zluda/src/impl/function.rs
++++ b/zluda/src/impl/function.rs
+@@ -191,6 +191,7 @@ pub(crate) fn launch_kernel(
+         }
+     };
+     if let (Some((prep, blocks)), true) = (f.prep, run_prep) {
++        let profile = unsafe { super::d4r_profile::Launch::begin(stream) }?;
+         unsafe {
+             hipModuleLaunchKernel(
+                 prep,
+@@ -206,6 +207,9 @@ pub(crate) fn launch_kernel(
+                 extra_for_hip,
+             )
+         }?;
++        if let Some(profile) = profile {
++            unsafe { profile.finish(prep, &f.name, "native", "prep", [blocks,1,1], [128,1,1], 0, stream) }?;
++        }
+         f.prep_last.store(prep_key, std::sync::atomic::Ordering::Relaxed);
+     }
+     let block_dim_z = if f.block_z != 0 { f.block_z } else { block_dim_z };
+@@ -214,6 +218,7 @@ pub(crate) fn launch_kernel(
+         eprintln!("[d4r-launch] kernel={:?} backend={} grid={grid_dim_x},{grid_dim_y},{grid_dim_z} block={block_dim_x},{block_dim_y},{block_dim_z}",
+             f.name, if f.native_owner.is_some() { "native" } else { "translated" });
+     }
++    let profile = unsafe { super::d4r_profile::Launch::begin(stream) }?;
+     let result = unsafe {
+         hipModuleLaunchKernel(
+             f.base,
+@@ -230,6 +235,10 @@ pub(crate) fn launch_kernel(
+         )
+     };
+     result?;
++    if let Some(profile) = profile {
++        unsafe { profile.finish(f.base, &f.name, if f.native_owner.is_some() { "native" } else { "translated" },
++            "main", [grid_dim_x, grid_dim_y, grid_dim_z], [block_dim_x, block_dim_y, block_dim_z], shared_mem_bytes, stream) }?;
++    }
+     if let Some(replay) = replay { replay.finish(stream)?; }
+     Ok(())
+ }
+diff --git a/zluda/src/impl/mod.rs b/zluda/src/impl/mod.rs
+index 14e0aee..380eb6e 100644
+--- a/zluda/src/impl/mod.rs
++++ b/zluda/src/impl/mod.rs
+@@ -6,6 +6,7 @@ pub(super) mod context;
+ pub(super) mod device;
+ pub(super) mod driver;
+ pub(super) mod d4r_replay;
++pub(super) mod d4r_profile;
+ pub(super) mod event;
+ pub(super) mod function;
+ pub(super) mod graph;
+diff --git a/zluda/src/impl/module.rs b/zluda/src/impl/module.rs
+index 5a79368..232f7d4 100644
+--- a/zluda/src/impl/module.rs
++++ b/zluda/src/impl/module.rs
+@@ -502,7 +502,7 @@ fn zluda_build_version() -> &'static str {
+                 key.starts_with("D4R_ZLUDA_")
+                     && !matches!(
+                         key.as_str(),
+-                        "D4R_ZLUDA_NATIVE_DIR" | "D4R_ZLUDA_DIR" | "D4R_ZLUDA_DUMP_DIR" | "D4R_ZLUDA_DUMP_PTX_DIR" | "D4R_ZLUDA_LIBCUDA" | "D4R_ZLUDA_VERBOSE"
++                        "D4R_ZLUDA_NATIVE_DIR" | "D4R_ZLUDA_DIR" | "D4R_ZLUDA_DUMP_DIR" | "D4R_ZLUDA_DUMP_PTX_DIR" | "D4R_ZLUDA_LIBCUDA" | "D4R_ZLUDA_VERBOSE" | "D4R_ZLUDA_PROFILE"
+                             | "D4R_ZLUDA_WMMA_FP8_NATIVE" // keyed by effect (ExtraCacheAttributes)
+                     )
+             })
+-- 
+2.55.0.windows.5
+

patches/zluda/0015-nonserializing-cuda-api-profile.patch

@@ -0,0 +1,83 @@
+From a1c506fc956cfc347c56c44311669700c0d500ac Mon Sep 17 00:00:00 2001
+From: Codex <codex@localhost>
+Date: Thu, 1 Oct 2026 22:16:19 +0300
+Subject: [PATCH] Profile CUDA host API duration without serializing GPU
+ launches
+
+---
+ zluda/src/d4r_api_profile.rs | 34 ++++++++++++++++++++++++++++++++++
+ zluda/src/lib.rs             |  3 +++
+ 2 files changed, 37 insertions(+)
+ create mode 100644 zluda/src/d4r_api_profile.rs
+
+diff --git a/zluda/src/d4r_api_profile.rs b/zluda/src/d4r_api_profile.rs
+new file mode 100644
+index 0000000..ef2da1b
+--- /dev/null
++++ b/zluda/src/d4r_api_profile.rs
+@@ -0,0 +1,34 @@
++//! Host API timings only: no HIP events, stream waits, or altered scheduling.
++use std::{cell::RefCell, collections::BTreeMap, sync::OnceLock, time::Instant};
++
++#[derive(Default)]
++struct Row { calls: u64, total_ms: f64, max_ms: f64 }
++struct Samples { since: Instant, rows: BTreeMap<&'static str, Row> }
++thread_local! {
++    static SAMPLES: RefCell<Samples> = RefCell::new(Samples { since: Instant::now(), rows: BTreeMap::new() });
++}
++pub(crate) struct Call { name: &'static str, start: Instant }
++impl Call {
++    pub(crate) fn begin(name: &'static str) -> Option<Self> {
++        static ENABLED: OnceLock<bool> = OnceLock::new();
++        if !*ENABLED.get_or_init(|| std::env::var_os("D4R_ZLUDA_PROFILE_API").is_some()) { return None; }
++        Some(Self { name, start: Instant::now() })
++    }
++}
++impl Drop for Call {
++    fn drop(&mut self) {
++        let ms = self.start.elapsed().as_secs_f64() * 1000.;
++        SAMPLES.with(|samples| {
++            let mut samples = samples.borrow_mut();
++            let row = samples.rows.entry(self.name).or_default();
++            row.calls += 1; row.total_ms += ms; row.max_ms = row.max_ms.max(ms);
++            let period_ms = samples.since.elapsed().as_secs_f64() * 1000.;
++            if period_ms < 2000. { return; }
++            for (name, row) in &samples.rows {
++                eprintln!("D4R_CUDA_API_PROFILE thread={:?} api={name} calls={} total_ms={:.6} max_ms={:.6} period_ms={period_ms:.6} serializing=0",
++                    std::thread::current().id(), row.calls, row.total_ms, row.max_ms);
++            }
++            samples.rows.clear(); samples.since = Instant::now();
++        });
++    }
++}
+diff --git a/zluda/src/lib.rs b/zluda/src/lib.rs
+index ecdeb3e..31bfa42 100644
+--- a/zluda/src/lib.rs
++++ b/zluda/src/lib.rs
+@@ -2,6 +2,7 @@ use cuda_types::cuda::CUerror;
+ use std::sync::atomic::{AtomicBool, Ordering};
+ 
+ pub(crate) mod r#impl;
++mod d4r_api_profile;
+ #[cfg_attr(windows, path = "os_win.rs")]
+ #[cfg_attr(not(windows), path = "os_unix.rs")]
+ mod os;
+@@ -40,6 +41,7 @@ macro_rules! implemented {
+                 if !initialized() {
+                     return Err(CUerror::DEINITIALIZED);
+                 }
++                let _profile = d4r_api_profile::Call::begin(stringify!($fn_name));
+                 cuda_macros::cuda_normalize_fn!( crate::r#impl::$fn_name ) ($(zluda_common::FromCuda::<_, CUerror>::from_cuda(&$arg_id)?),*)?;
+                 Ok(())
+             }
+@@ -57,6 +59,7 @@ macro_rules! implemented_in_function {
+                 if !initialized() {
+                     return Err(CUerror::DEINITIALIZED);
+                 }
++                let _profile = d4r_api_profile::Call::begin(stringify!($fn_name));
+                 cuda_macros::cuda_normalize_fn!( crate::r#impl::function::$fn_name ) ($(zluda_common::FromCuda::<_, CUerror>::from_cuda(&$arg_id)?),*)?;
+                 Ok(())
+             }
+-- 
+2.55.0.windows.5
+

patches/zluda/0016-deferred-kernel-profile.patch

@@ -0,0 +1,282 @@
+From 26a43f7047ab933a4afb5ebdd26d5ba9e51e58a3 Mon Sep 17 00:00:00 2001
+From: xdfnx-dev <[email protected]>
+Date: Fri, 2 Oct 2026 11:50:45 +0300
+Subject: [PATCH 16/17] Sample HIP kernel events without per-launch completion
+ waits
+
+---
+ zluda/src/impl/context.rs     |   4 +-
+ zluda/src/impl/d4r_profile.rs | 204 ++++++++++++++++++++++++++++------
+ zluda/src/impl/module.rs      |   1 +
+ 3 files changed, 171 insertions(+), 38 deletions(-)
+
+diff --git a/zluda/src/impl/context.rs b/zluda/src/impl/context.rs
+index 9ccb372..374d383 100644
+--- a/zluda/src/impl/context.rs
++++ b/zluda/src/impl/context.rs
+@@ -165,7 +165,7 @@ pub(crate) fn set_cache_config(config: CUfunc_cache) -> CUresult {
+ }
+ 
+ pub(crate) fn synchronize() -> hipError_t {
+-    unsafe { hipDeviceSynchronize() }
++    unsafe { hipDeviceSynchronize()?; super::d4r_profile::collect_completed() }
+ }
+ 
+ pub(crate) fn synchronize_v2(ctx: &Context) -> hipError_t {
+@@ -177,7 +177,7 @@ pub(crate) fn synchronize_v2(ctx: &Context) -> hipError_t {
+     } else {
+         None
+     };
+-    unsafe { hipDeviceSynchronize() }
++    unsafe { hipDeviceSynchronize()?; super::d4r_profile::collect_completed() }
+ }
+ 
+ struct SetDeviceOnDrop(i32);
+diff --git a/zluda/src/impl/d4r_profile.rs b/zluda/src/impl/d4r_profile.rs
+index 33ba5f6..1b9d248 100644
+--- a/zluda/src/impl/d4r_profile.rs
++++ b/zluda/src/impl/d4r_profile.rs
+@@ -1,15 +1,29 @@
+-//! Optional, deliberately serializing HIP-event diagnostics. Not a production
+-//! scheduler or a claim about application FPS / measured hardware occupancy.
++//! Optional HIP-event diagnostics. Deferred mode never waits for its events,
++//! skips the legacy default stream and bounds outstanding events per thread.
++//! Timestamp insertion still adds overhead; this is not a production scheduler.
+ use hip_runtime_sys::*;
+-use std::{ffi::CStr, ptr, time::Instant};
++use std::{cell::RefCell, ffi::{CStr, CString}, ptr, sync::OnceLock, time::Instant};
+ 
+-pub(super) struct Launch {
+-    start: hipEvent_t,
+-    end: hipEvent_t,
+-    host: Instant,
++#[derive(Clone, Copy)]
++enum Mode { Off, Serial, Deferred(u64) }
++fn mode() -> Mode {
++    static MODE: OnceLock<Mode> = OnceLock::new();
++    *MODE.get_or_init(|| {
++        if std::env::var_os("D4R_ZLUDA_PROFILE_DEFERRED").is_some() {
++            let every = std::env::var("D4R_ZLUDA_PROFILE_EVERY").ok()
++                .and_then(|v| v.parse::<u64>().ok()).filter(|n| *n > 0).unwrap_or(17);
++            Mode::Deferred(every)
++        } else if std::env::var_os("D4R_ZLUDA_PROFILE").is_some() { Mode::Serial }
++        else { Mode::Off }
++    })
++}
++fn allow_legacy() -> bool {
++    static ALLOW: OnceLock<bool> = OnceLock::new();
++    *ALLOW.get_or_init(|| std::env::var_os("D4R_ZLUDA_PROFILE_ALLOW_LEGACY").is_some())
+ }
+ 
+-impl Drop for Launch {
++struct Events { start: hipEvent_t, end: hipEvent_t }
++impl Drop for Events {
+     fn drop(&mut self) {
+         unsafe {
+             if !self.end.is_null() { let _ = hipEventDestroy(self.end); }
+@@ -17,44 +31,162 @@ impl Drop for Launch {
+         }
+     }
+ }
++impl Events {
++    unsafe fn new() -> Result<Self, hipErrorCode_t> {
++        let mut result = Self { start: ptr::null_mut(), end: ptr::null_mut() };
++        hipEventCreateWithFlags(&mut result.start, 0)?;
++        hipEventCreateWithFlags(&mut result.end, 0)?;
++        Ok(result)
++    }
++}
++
++struct Description {
++    name: CString, backend: String, phase: String, grid: [u32;3], block: [u32;3],
++    shared: u32, lds: i32, regs: i32, private: i32, max_threads: i32, blocks_per_multiprocessor: i32,
++}
++impl Description {
++    unsafe fn new(function: hipFunction_t, name: &CStr, backend: &str, phase: &str,
++        grid: [u32;3], block: [u32;3], shared: u32) -> Result<Self, hipErrorCode_t> {
++        let mut d = Self { name: name.to_owned(), backend: backend.to_owned(), phase: phase.to_owned(),
++            grid, block, shared, lds: 0, regs: 0, private: 0, max_threads: 0, blocks_per_multiprocessor: 0 };
++        // Copy metadata while the function/module is alive. Collection never
++        // dereferences a function handle that the application may have unloaded.
++        hipFuncGetAttribute(&mut d.lds, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_SHARED_SIZE_BYTES, function)?;
++        hipFuncGetAttribute(&mut d.regs, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_NUM_REGS, function)?;
++        hipFuncGetAttribute(&mut d.private, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_LOCAL_SIZE_BYTES, function)?;
++        hipFuncGetAttribute(&mut d.max_threads, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_MAX_THREADS_PER_BLOCK, function)?;
++        let threads = block.iter().try_fold(1u32, |a, b| a.checked_mul(*b))
++            .filter(|n| *n <= i32::MAX as u32).ok_or(hipErrorCode_t::InvalidValue)?;
++        hipModuleOccupancyMaxActiveBlocksPerMultiprocessor(&mut d.blocks_per_multiprocessor,
++            function, threads as i32, shared as usize)?;
++        Ok(d)
++    }
++    fn print(&self, gpu_ms: f32, enqueue_ms: f64, completion_ms: f64, serializing: bool, stream: usize) {
++        if !gpu_ms.is_finite() || gpu_ms < 0. {
++            eprintln!("D4R_KERNEL_PROFILE_INVALID kernel={:?} backend={} phase={} gpu_ms={gpu_ms:.6} reason=invalid_elapsed_time serializing={} deferred={} stream=0x{stream:x}",
++                self.name, self.backend, self.phase, u32::from(serializing), u32::from(!serializing));
++            return;
++        }
++        eprintln!("D4R_KERNEL_PROFILE kernel={:?} backend={} phase={} gpu_ms={gpu_ms:.6} enqueue_ms={enqueue_ms:.6} completion_ms={completion_ms:.6} grid={},{},{} block={},{},{} static_lds_bytes={} dynamic_lds_bytes={} regs={} private_bytes={} max_threads={} predicted_blocks_per_multiprocessor={} serializing={} deferred={} stream=0x{stream:x} legacy_stream={}",
++            self.name, self.backend, self.phase, self.grid[0], self.grid[1], self.grid[2],
++            self.block[0], self.block[1], self.block[2], self.lds, self.shared, self.regs,
++            self.private, self.max_threads, self.blocks_per_multiprocessor,
++            u32::from(serializing), u32::from(!serializing), u32::from(stream <= 1));
++    }
++}
++
++struct Pending { launch: Launch, description: Description, enqueue_ms: f64, stream: usize }
++const CAPACITY: usize = 64;
++struct Deferred {
++    calls: u64, skipped: u64, pending: Vec<Pending>, free: Vec<(i32, Events)>,
++}
++thread_local! {
++    static DEFERRED: RefCell<Deferred> = RefCell::new(Deferred {
++        calls: 0, skipped: 0, pending: Vec::new(), free: Vec::new(),
++    });
++}
++
++impl Deferred {
++    unsafe fn collect(&mut self, device: i32) -> hipError_t {
++        let mut index = 0;
++        while index < self.pending.len() {
++            let p = &self.pending[index];
++            if p.launch.device != device { index += 1; continue; }
++            match hipEventQuery(p.launch.events.end) {
++                Err(e) if e == hipErrorCode_t::NotReady => { index += 1; continue; }
++                result => result?,
++            }
++            let mut gpu_ms = 0.;
++            hipEventElapsedTime(&mut gpu_ms, p.launch.events.start, p.launch.events.end)?;
++            p.description.print(gpu_ms, p.enqueue_ms, p.launch.host.elapsed().as_secs_f64() * 1000., false, p.stream);
++            let p = self.pending.swap_remove(index);
++            // Re-record only after the old timestamps have been collected.
++            self.free.push((device, p.launch.events));
++        }
++        Ok(())
++    }
++}
++
++/// Called only after the application's existing context synchronization, or
++/// before a selected launch. No event/stream/device wait is added here.
++pub(super) unsafe fn collect_completed() -> hipError_t {
++    if !matches!(mode(), Mode::Deferred(_)) { return Ok(()); }
++    DEFERRED.with(|state| {
++        let mut state = state.borrow_mut();
++        if state.pending.is_empty() { return Ok(()); }
++        let mut device = 0; hipGetDevice(&mut device)?;
++        state.collect(device)
++    })
++}
++
++pub(super) struct Launch {
++    events: Events,
++    host: Instant,
++    device: i32,
++    deferred: bool,
++}
+ 
+ impl Launch {
+     pub(super) unsafe fn begin(stream: hipStream_t) -> Result<Option<Self>, hipErrorCode_t> {
+-        if std::env::var_os("D4R_ZLUDA_PROFILE").is_none() { return Ok(None); }
+-        let mut result = Self { start: ptr::null_mut(), end: ptr::null_mut(), host: Instant::now() };
+-        hipEventCreateWithFlags(&mut result.start, 0)?;
+-        hipEventCreateWithFlags(&mut result.end, 0)?;
+-        hipEventRecord(result.start, stream)?;
+-        result.host = Instant::now();
+-        Ok(Some(result))
++        let mode = mode();
++        if matches!(mode, Mode::Off) { return Ok(None); }
++        if let Mode::Deferred(every) = mode {
++            return DEFERRED.with(|state| {
++                let mut state = state.borrow_mut();
++                state.calls = state.calls.wrapping_add(1);
++                if (state.calls - 1) % every != 0 { return Ok(None); }
++                // HIP timing events on the legacy default stream can order
++                // other streams. Do not introduce that dependency in this mode.
++                if stream.0 as usize <= 1 && !allow_legacy() {
++                    state.skipped += 1;
++                    if state.skipped.is_power_of_two() {
++                        eprintln!("D4R_KERNEL_PROFILE_SKIPPED reason=legacy_default_stream count={} serializing=0", state.skipped);
++                    }
++                    return Ok(None);
++                }
++                let mut device = 0; hipGetDevice(&mut device)?;
++                state.collect(device)?;
++                let mut capture = hipStreamCaptureStatus::hipStreamCaptureStatusNone;
++                hipStreamIsCapturing(stream, &mut capture)?;
++                if capture != hipStreamCaptureStatus::hipStreamCaptureStatusNone {
++                    state.skipped += 1;
++                    eprintln!("D4R_KERNEL_PROFILE_SKIPPED reason=stream_capture count={} serializing=0", state.skipped);
++                    return Ok(None);
++                }
++                let events = if let Some(index) = state.free.iter().position(|(d, _)| *d == device) {
++                    state.free.swap_remove(index).1
++                } else if state.pending.len() + state.free.len() < CAPACITY {
++                    Events::new()?
++                } else {
++                    state.skipped += 1;
++                    eprintln!("D4R_KERNEL_PROFILE_SKIPPED reason=capacity count={} capacity={CAPACITY} serializing=0", state.skipped);
++                    return Ok(None);
++                };
++                hipEventRecord(events.start, stream)?;
++                Ok(Some(Self { events, host: Instant::now(), device, deferred: true }))
++            });
++        }
++        let events = Events::new()?;
++        hipEventRecord(events.start, stream)?;
++        Ok(Some(Self { events, host: Instant::now(), device: -1, deferred: false }))
+     }
+ 
+     pub(super) unsafe fn finish(self, function: hipFunction_t, name: &CStr, backend: &str,
+         phase: &str, grid: [u32;3], block: [u32;3], shared: u32, stream: hipStream_t) -> hipError_t {
+         let enqueue_ms = self.host.elapsed().as_secs_f64() * 1000.;
+-        hipEventRecord(self.end, stream)?;
+-        hipEventSynchronize(self.end)?;
++        hipEventRecord(self.events.end, stream)?;
++        let description = Description::new(function, name, backend, phase, grid, block, shared)?;
++        if self.deferred {
++            DEFERRED.with(|state| state.borrow_mut().pending.push(Pending {
++                launch: self, description, enqueue_ms, stream: stream.0 as usize,
++            }));
++            return Ok(());
++        }
++        hipEventSynchronize(self.events.end)?;
+         let completion_ms = self.host.elapsed().as_secs_f64() * 1000.;
+         let mut gpu_ms = 0.;
+-        hipEventElapsedTime(&mut gpu_ms, self.start, self.end)?;
+-        // Module function handles use the Driver API attribute query. The
+-        // plural Runtime API expects a registered host function address.
+-        let mut lds = 0;
+-        let mut regs = 0;
+-        let mut private = 0;
+-        let mut max_threads = 0;
+-        hipFuncGetAttribute(&mut lds, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_SHARED_SIZE_BYTES, function)?;
+-        hipFuncGetAttribute(&mut regs, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_NUM_REGS, function)?;
+-        hipFuncGetAttribute(&mut private, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_LOCAL_SIZE_BYTES, function)?;
+-        hipFuncGetAttribute(&mut max_threads, hipFunction_attribute::HIP_FUNC_ATTRIBUTE_MAX_THREADS_PER_BLOCK, function)?;
+-        let threads = block.iter().try_fold(1u32, |a, b| a.checked_mul(*b))
+-            .filter(|n| *n <= i32::MAX as u32).ok_or(hipErrorCode_t::InvalidValue)?;
+-        let mut blocks_per_multiprocessor = 0;
+-        hipModuleOccupancyMaxActiveBlocksPerMultiprocessor(&mut blocks_per_multiprocessor,
+-            function, threads as i32, shared as usize)?;
+-        eprintln!("D4R_KERNEL_PROFILE kernel={name:?} backend={backend} phase={phase} gpu_ms={gpu_ms:.6} enqueue_ms={enqueue_ms:.6} completion_ms={completion_ms:.6} grid={},{},{} block={},{},{} static_lds_bytes={} dynamic_lds_bytes={shared} regs={} private_bytes={} max_threads={} predicted_blocks_per_multiprocessor={blocks_per_multiprocessor} serializing=1",
+-            grid[0], grid[1], grid[2], block[0], block[1], block[2], lds,
+-            regs, private, max_threads);
++        hipEventElapsedTime(&mut gpu_ms, self.events.start, self.events.end)?;
++        description.print(gpu_ms, enqueue_ms, completion_ms, true, stream.0 as usize);
+         Ok(())
+     }
+ }
+diff --git a/zluda/src/impl/module.rs b/zluda/src/impl/module.rs
+index 232f7d4..8d43abf 100644
+--- a/zluda/src/impl/module.rs
++++ b/zluda/src/impl/module.rs
+@@ -503,6 +503,7 @@ fn zluda_build_version() -> &'static str {
+                     && !matches!(
+                         key.as_str(),
+                         "D4R_ZLUDA_NATIVE_DIR" | "D4R_ZLUDA_DIR" | "D4R_ZLUDA_DUMP_DIR" | "D4R_ZLUDA_DUMP_PTX_DIR" | "D4R_ZLUDA_LIBCUDA" | "D4R_ZLUDA_VERBOSE" | "D4R_ZLUDA_PROFILE"
++                            | "D4R_ZLUDA_PROFILE_API" | "D4R_ZLUDA_PROFILE_DEFERRED" | "D4R_ZLUDA_PROFILE_EVERY" | "D4R_ZLUDA_PROFILE_ALLOW_LEGACY"
+                             | "D4R_ZLUDA_WMMA_FP8_NATIVE" // keyed by effect (ExtraCacheAttributes)
+                     )
+             })
+-- 
+2.55.0.windows.5
+

patches/zluda/0017-asynchronous-2d-array-copies.patch

@@ -0,0 +1,50 @@
+From 67127dde599879ada022d6439383d682e09e0b36 Mon Sep 17 00:00:00 2001
+From: xdfnx-dev <[email protected]>
+Date: Fri, 2 Oct 2026 11:50:45 +0300
+Subject: [PATCH 17/17] Implement asynchronous 2D array copies for Windows
+ input batching
+
+---
+ zluda/src/impl/memory.rs | 13 +++++++++++++
+ zluda/src/lib.rs         |  1 +
+ 2 files changed, 14 insertions(+)
+
+diff --git a/zluda/src/impl/memory.rs b/zluda/src/impl/memory.rs
+index b724942..42facb3 100644
+--- a/zluda/src/impl/memory.rs
++++ b/zluda/src/impl/memory.rs
+@@ -469,6 +469,19 @@ pub(crate) unsafe fn copy_2d_v2(memcpy: hip_Memcpy2D) -> CUresult {
+     Ok(())
+ }
+ 
++pub(crate) unsafe fn copy_2d_async_v2(memcpy: hip_Memcpy2D, stream: hipStream_t) -> CUresult {
++    // The format-80 emulation in copy_2d_v2 uses temporary CPU storage.
++    // Reject it explicitly here: an asynchronous copy cannot outlive those
++    // temporaries, and the Windows fast path uses canonical float arrays.
++    let src_packed = memcpy.srcMemoryType == hipMemoryType::hipMemoryTypeArray
++        && array::original_format(memcpy.srcArray)? == Some(80);
++    let dst_packed = memcpy.dstMemoryType == hipMemoryType::hipMemoryTypeArray
++        && array::original_format(memcpy.dstArray)? == Some(80);
++    if src_packed || dst_packed { return Err(CUerror::NOT_SUPPORTED); }
++    hipMemcpyParam2DAsync(&memcpy, stream)?;
++    Ok(())
++}
++
+ pub(crate) unsafe fn copy_2d_unaligned_v2(memcpy: hip_Memcpy2D) -> CUresult {
+     hipDrvMemcpy2DUnaligned(&memcpy)?;
+     Ok(())
+diff --git a/zluda/src/lib.rs b/zluda/src/lib.rs
+index 31bfa42..939981e 100644
+--- a/zluda/src/lib.rs
++++ b/zluda/src/lib.rs
+@@ -150,6 +150,7 @@ cuda_macros::cuda_function_declarations!(
+             cuMemAlloc_v2,
+             cuMemAllocPitch_v2,
+             cuMemcpy2D_v2,
++            cuMemcpy2DAsync_v2,
+             cuMemcpy2DUnaligned_v2,
+             cuMemcpy3D_v2,
+             cuMemcpyAsync,
+-- 
+2.55.0.windows.5
+

patches/zluda/0018-opt-in-rdna-wgp-placement.patch

@@ -0,0 +1,93 @@
+From fb0adc8714f57647320f0601533ec50331e378b0 Mon Sep 17 00:00:00 2001
+From: xdfnx-dev <[email protected]>
+Date: Fri, 2 Oct 2026 14:40:56 +0300
+Subject: [PATCH] Add opt-in RDNA CU/WGP placement for matched native
+ experiments
+
+---
+ llvm_zluda/src/compile.rs | 42 ++++++++++++++++++++++++++++++++++-----
+ ptx/src/pass/llvm/emit.rs |  3 ++-
+ 2 files changed, 39 insertions(+), 6 deletions(-)
+
+diff --git a/llvm_zluda/src/compile.rs b/llvm_zluda/src/compile.rs
+index 90c0034..6a2f452 100644
+--- a/llvm_zluda/src/compile.rs
++++ b/llvm_zluda/src/compile.rs
+@@ -24,6 +24,37 @@ const OCKL_MODULE: &[u8] = include_bytes!("device-libs/ockl.bc");
+ // https://llvm.org/docs/AMDGPUUsage.html#address-spaces
+ const CONSTANT_ADDRESS_SPACE: u32 = 4;
+ 
++/// Opt-in RDNA scheduling experiment; changes placement, not FP semantics.
++pub fn wgp_requested() -> bool {
++    std::env::var("D4R_ZLUDA_WGP").is_ok_and(|value| value.trim() == "1")
++}
++
++fn target_features(wave64: bool, wgp: bool) -> &'static CStr {
++    match (wave64, wgp) {
++        (false, false) => c"-wavefrontsize64,+cumode",
++        (true, false) => c"-wavefrontsize32,+wavefrontsize64,+cumode",
++        (false, true) => c"-wavefrontsize64,-cumode",
++        (true, true) => c"-wavefrontsize32,+wavefrontsize64,-cumode",
++    }
++}
++
++#[cfg(test)]
++mod shader_mode_tests {
++    use super::target_features;
++
++    #[test]
++    fn wgp_changes_only_cu_placement_in_both_wave_modes() {
++        for wave64 in [false, true] {
++            let cu = target_features(wave64, false).to_str().unwrap();
++            let wgp = target_features(wave64, true).to_str().unwrap();
++            assert_eq!(cu.replace("+cumode", "-cumode"), wgp);
++            assert_eq!(cu.contains("+wavefrontsize64"), wave64);
++            assert_eq!(wgp.contains("+wavefrontsize64"), wave64);
++        }
++        assert_eq!(target_features(false, false), c"-wavefrontsize64,+cumode");
++    }
++}
++
+ fn load_module(ctx: &Context, bc: &[u8], name: &std::ffi::CStr) -> Result<Module, String> {
+     let module = Module::try_from_bitcode(ctx, bc, Some(name))
+         .ok_or(("Failed to parse bitcode").to_string())?;
+@@ -229,11 +260,12 @@ pub fn compile(
+     let cpu = std::ffi::CString::new(gcn_arch).map_err(|_| ("invalid gcn_arch").to_string())?;
+     // functions without their own target features (the linked helper libraries) take these, so under
+     // D4R_ZLUDA_WAVE64 they must be optimised as wave64 too (lane-id and ballot folding)
+-    let features = if std::env::var("D4R_ZLUDA_WAVE64").map_or(false, |v| v.trim() == "1") {
+-        c"-wavefrontsize32,+wavefrontsize64,+cumode"
+-    } else {
+-        c"-wavefrontsize64,+cumode"
+-    };
++    let wgp = wgp_requested();
++    if wgp && !gcn_arch.starts_with("gfx11") && !gcn_arch.starts_with("gfx12") {
++        return Err(format!("D4R_ZLUDA_WGP requires RDNA3/4, got {gcn_arch}"));
++    }
++    let features = target_features(
++        std::env::var("D4R_ZLUDA_WAVE64").is_ok_and(|v| v.trim() == "1"), wgp);
+ 
+     let mut target = unsafe { std::mem::zeroed() };
+     let mut err = std::ptr::null_mut();
+diff --git a/ptx/src/pass/llvm/emit.rs b/ptx/src/pass/llvm/emit.rs
+index 6af2495..8b67c93 100644
+--- a/ptx/src/pass/llvm/emit.rs
++++ b/ptx/src/pass/llvm/emit.rs
+@@ -397,12 +397,13 @@ impl<'a, 'input> ModuleEmitContext<'a, 'input> {
+ 
+     fn emit_target_features(&mut self, fn_: LLVMValueRef) {
+         let value = format!(
+-            "{},+cumode{}",
++            "{},{}{}",
+             if crate::pass::wave64_requested() {
+                 "-wavefrontsize32,+wavefrontsize64"
+             } else {
+                 "+wavefrontsize32,-wavefrontsize64"
+             },
++            if llvm_zluda::compile::wgp_requested() { "-cumode" } else { "+cumode" },
+             if cfg!(debug_assertions) {
+                 ",+precise-memory"
+             } else {
+-- 
+2.55.0.windows.5
+

scripts/windows/benchmark-native-replay.ps1

@@ -0,0 +1,17 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$Module,
+    [Parameter(Mandatory=$true)][string]$Candidate,
+    [Parameter(Mandatory=$true)][string]$FixtureDirectory,
+    [string]$HipRoot, [string]$Probe, [string]$OutputDirectory,
+    [ValidateRange(1,10000)][int]$Pairs=32,
+    [ValidateRange(1,256)][int[]]$Batches=@(1,64),
+    [ValidateSet('events','dispatch')][string[]]$Timings=@('events','dispatch'))
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot=Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$Probe) { $Probe=Join-Path $repo 'build/windows-rdna4-therock/d4r_native_replay_probe.exe' }
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo ('test-results/native-benchmark-'+(Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
+& python.exe (Join-Path $repo 'tools/windows/benchmark_native_replay.py') --probe $Probe --hip-root $HipRoot `
+    --module $Module --candidate $Candidate --fixture-dir $FixtureDirectory --output-dir $OutputDirectory `
+    --pairs $Pairs --batches @Batches --timings @Timings
+if ($LASTEXITCODE) { throw "Native benchmark failed. Logs: $OutputDirectory" }

scripts/windows/build-gpu-telemetry.ps1

@@ -0,0 +1,28 @@
+[CmdletBinding()]
+param([string]$AdlxRoot, [string]$BuildDirectory, [string]$Compiler)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+$commit='32b5a740d42295c5dfe9026b9f52683da0f3af91'
+if (!$AdlxRoot) { $AdlxRoot=Join-Path $repo 'external/ADLX' }
+if (!$BuildDirectory) { $BuildDirectory=Join-Path $repo 'build/gpu-telemetry' }
+if (!$Compiler) { $Compiler=Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64/bin/x86_64-w64-mingw32-clang.exe' }
+if (!(Test-Path -LiteralPath $AdlxRoot)) {
+    & git clone --no-checkout https://github.com/GPUOpen-LibrariesAndSDKs/ADLX.git $AdlxRoot
+    if ($LASTEXITCODE) { throw 'ADLX SDK download failed.' }
+    & git -C $AdlxRoot checkout --detach $commit
+    if ($LASTEXITCODE) { throw 'ADLX SDK checkout failed.' }
+}
+if ((& git -C $AdlxRoot rev-parse HEAD).Trim() -ne $commit -or (& git -C $AdlxRoot status --porcelain)) {
+    throw "Expected clean ADLX SDK $commit; use a separate AdlxRoot."
+}
+if (!(Test-Path -LiteralPath $Compiler)) { throw 'Set Compiler to an x64 LLVM-MinGW clang.exe.' }
+New-Item -ItemType Directory -Force $BuildDirectory | Out-Null
+$exe=Join-Path $BuildDirectory 'd4r_gpu_telemetry.exe'
+& $Compiler -std=c11 -O2 -Wall -Wextra -Wno-unknown-pragmas -DWIN32_LEAN_AND_MEAN -D_M_AMD64 `
+    -isystem "$AdlxRoot/SDK/Include" (Join-Path $repo 'tools/windows/gpu_telemetry.c') -o $exe
+if ($LASTEXITCODE) { throw "GPU telemetry compile failed: $LASTEXITCODE" }
+@{sdkCommit=$commit; sdkLicense=(Join-Path $AdlxRoot 'ADLX SDK License Agreement.pdf');
+    executable=$exe; compiler=$Compiler; sha256=(Get-FileHash -LiteralPath $exe -Algorithm SHA256).Hash} |
+    ConvertTo-Json | Set-Content -LiteralPath (Join-Path $BuildDirectory 'build-info.json') -Encoding UTF8
+Write-Host "Built local read-only telemetry: $exe"
+# The SDK, driver DLL and SDK-dependent binary are not added to public packages.

scripts/windows/build-native-k-experiment.ps1

@@ -0,0 +1,68 @@
+[CmdletBinding()]
+param([ValidateSet('enc0','enc1','enc2','enc3','enc4','dec5','dec4','dec3','dec2','dec1','dec0')]
+    [string]$Layer='enc1', [ValidateSet('source','cu','wgp')][string]$Mode='source',
+    [ValidateSet('baseline','load','store','both')][string]$NonTemporal='baseline',
+    [ValidateSet(0,1,2,4)][int]$PosTiles=0, [switch]$ShareValues, [switch]$PrivateValues,
+    [switch]$PackedAccumulator,
+    [string]$HipRoot, [string]$OutputDirectory)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot=Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if ($ShareValues -and $PrivateValues) { throw 'Choose shared or private V storage.' }
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo "build/native-k-experiment-$Layer-$Mode-$NonTemporal-pos$PosTiles-share$([int][bool]$ShareValues)-private$([int][bool]$PrivateValues)-packed$([int][bool]$PackedAccumulator)" }
+$OutputDirectory=[IO.Path]::GetFullPath($OutputDirectory)
+foreach ($baseline in @('build/native-k-gfx1201','build/windows-rdna4-therock','dist/windows-rdna4-command-list')) {
+    if ($OutputDirectory.StartsWith([IO.Path]::GetFullPath((Join-Path $repo $baseline)), [StringComparison]::OrdinalIgnoreCase)) {
+        throw 'Keep experimental objects outside the validated baseline/package.'
+    }
+}
+$compiler=Join-Path $HipRoot 'lib/llvm/bin/clang++.exe'
+if (!(Test-Path -LiteralPath $compiler)) { $compiler=Join-Path $HipRoot 'bin/clang++.exe' }
+$name="dltss_pwin_${Layer}_layer"
+$source=Join-Path $repo "kernels/k/$name.hip"
+$flags=@()
+if ((Get-Content -LiteralPath $source -Raw) -match '// d4r-build-flags: ([^\r\n]+)') { $flags=$Matches[1].Trim().Split(' ') }
+if ($Mode -ne 'source') {
+    $flags=@($flags | Where-Object { $_ -ne '-mcumode' -and $_ -ne '-mno-cumode' })
+    $flags+=if ($Mode -eq 'cu') { '-mcumode' } else { '-mno-cumode' }
+}
+if ($NonTemporal -in @('load','both')) { $flags+='-DPWIN_NT_LOAD' }
+if ($NonTemporal -in @('store','both')) { $flags+='-DPWIN_NT_STORE' }
+if ($PosTiles) {
+    if ($Layer -notin @('enc0','enc1','dec0')) { throw 'Token tiling is audited for position-only layers only.' }
+    $flags+=if ($Layer -eq 'enc1') { "-DD4R_K_ENC1_POS_MT=$PosTiles" } else { "-DD4R_K_POS_MT=$PosTiles" }
+}
+if ($ShareValues) {
+    if ($Layer -notin @('enc0','dec0') -and !($Layer -eq 'enc1' -and $PosTiles)) {
+        throw 'ShareValues requires a position-only template.'
+    }
+    $flags+='-DPOS_VSHARE'
+}
+if ($PackedAccumulator) { $flags+='-DD4R_K_PACKED_ACC' }
+if ($PrivateValues) { $flags+='-DD4R_K_PRIVATE_V' }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$object=Join-Path $OutputDirectory "$name.hsaco"
+$arguments=@('-x','hip','-std=c++17','--offload-arch=gfx1201','--offload-device-only',
+    '--no-gpu-bundle-output','-mno-wavefrontsize64','-nogpuinc','-nogpulib','-O3',
+    '-DD4R_DEVICE_ONLY_MINIMAL','-DD4R_K_FP16_BASELINE')+$flags+@($source,'-o',$object)
+$ErrorActionPreference='Continue'
+& $compiler @arguments > (Join-Path $OutputDirectory "$name.build.stdout.log") 2> (Join-Path $OutputDirectory "$name.build.stderr.log")
+$ErrorActionPreference='Stop'
+if ($LASTEXITCODE) { throw "Experimental K compile failed: $Layer" }
+& (Join-Path (Split-Path $compiler) 'llvm-objdump.exe') --disassemble --mcpu=gfx1201 $object `
+    > (Join-Path $OutputDirectory "$name.isa.txt")
+if ($LASTEXITCODE) { throw 'Native object ISA extraction failed.' }
+& (Join-Path (Split-Path $compiler) 'llvm-readobj.exe') --notes $object `
+    > (Join-Path $OutputDirectory "$name.metadata.txt")
+if ($LASTEXITCODE) { throw 'Native object metadata extraction failed.' }
+@{layer=$Layer; architecture='gfx1201'; experimental=$true; numericalValidation='pending';
+    mode=$Mode; nonTemporal=$NonTemporal; tokenTilesPerWave=$PosTiles; shareValues=[bool]$ShareValues;
+    privateValues=[bool]$PrivateValues;
+    packedAccumulator=[bool]$PackedAccumulator;
+    compiler=$compiler; arguments=$arguments;
+    sourceCommit=(git -C $repo rev-parse HEAD); workingTreeDirty=[bool](& git -C $repo status --porcelain);
+    compilerVersion=(& $compiler --version | Out-String).Trim();
+    sha256=(Get-FileHash -LiteralPath $object -Algorithm SHA256).Hash} |
+    ConvertTo-Json -Depth 4 | Set-Content -LiteralPath (Join-Path $OutputDirectory "$name.build-info.json") -Encoding UTF8
+Write-Host "Compiled gfx1201 K experiment: $Layer mode=$Mode nonTemporal=$NonTemporal posTiles=$PosTiles shareValues=$([bool]$ShareValues). Validate before installing."
+# No override manifest or game installation is produced by this script.

scripts/windows/build-native-k-f16-wmma.ps1

@@ -0,0 +1,40 @@
+[CmdletBinding()]
+param([ValidateSet('enc0','enc1','enc2','enc3','enc4','dec5','dec4','dec3','dec2','dec1','dec0')]
+    [string]$Layer='enc1', [string]$HipRoot, [string]$OutputDirectory)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot=Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo 'build/native-k-f16-wmma-experimental' }
+$OutputDirectory=[IO.Path]::GetFullPath($OutputDirectory)
+if ($OutputDirectory -eq [IO.Path]::GetFullPath((Join-Path $repo 'build/native-k-gfx1201'))) {
+    throw 'Keep the validated baseline separate from this experimental build.'
+}
+$compiler=Join-Path $HipRoot 'lib/llvm/bin/clang++.exe'
+if (!(Test-Path -LiteralPath $compiler)) { $compiler=Join-Path $HipRoot 'bin/clang++.exe' }
+if (!(Test-Path -LiteralPath $compiler)) { throw "HIP compiler missing under $HipRoot" }
+$name="dltss_pwin_${Layer}_layer"
+$source=Join-Path $repo "kernels/k/$name.hip"
+$flags=@()
+if ((Get-Content -LiteralPath $source -Raw) -match '// d4r-build-flags: ([^\r\n]+)') { $flags=$Matches[1].Trim().Split(' ') }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$object=Join-Path $OutputDirectory "$name.hsaco"
+$ErrorActionPreference='Continue'
+& $compiler -x hip -std=c++17 --offload-arch=gfx1201 --offload-device-only --no-gpu-bundle-output `
+    -mno-wavefrontsize64 -nogpuinc -nogpulib -O3 -DD4R_DEVICE_ONLY_MINIMAL `
+    -DD4R_K_FP16_BASELINE -DD4R_K_F16_WMMA @flags $source -o $object `
+    > (Join-Path $OutputDirectory "$name.build.stdout.log") 2> (Join-Path $OutputDirectory "$name.build.stderr.log")
+$ErrorActionPreference='Stop'
+if ($LASTEXITCODE) { throw "Experimental K FP16 WMMA compile failed: $Layer" }
+$isa=Join-Path $OutputDirectory "$name.isa.txt"
+& (Join-Path (Split-Path $compiler) 'llvm-objdump.exe') --disassemble --mcpu=gfx1201 $object > $isa
+if ($LASTEXITCODE -or !(Select-String -LiteralPath $isa -Pattern 'v_wmma_f16_16x16x16_f16')) {
+    throw 'Packed FP16 WMMA is absent from ISA; no alternative instruction is accepted.'
+}
+& (Join-Path (Split-Path $compiler) 'llvm-readobj.exe') --notes $object `
+    > (Join-Path $OutputDirectory "$name.metadata.txt")
+if ($LASTEXITCODE) { throw 'Native object metadata extraction failed.' }
+@{layer=$Layer; architecture='gfx1201'; experimental=$true; numericalValidation='pending';
+    compiler=$compiler; sha256=(Get-FileHash -LiteralPath $object -Algorithm SHA256).Hash} |
+    ConvertTo-Json | Set-Content -LiteralPath (Join-Path $OutputDirectory "$name.build-info.json") -Encoding UTF8
+Write-Host "Compiled experimental gfx1201 packed FP16 WMMA: $Layer. Validate before selecting another layer."
+# This script does not generate an override manifest or install into the game.

scripts/windows/build-native-m-fp8.ps1

@@ -0,0 +1,59 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$DlssDll, [string]$HipRoot, [string]$OutputDirectory, [switch]$HardwarePacking)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot=Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo $(if ($HardwarePacking) { 'build/native-m-fp8-hardware-pack' } else { 'build/native-m-fp8-experimental' }) }
+$OutputDirectory=[IO.Path]::GetFullPath($OutputDirectory)
+if ($OutputDirectory -eq [IO.Path]::GetFullPath((Join-Path $repo 'build/native-m-gfx1201'))) {
+    throw 'Keep the validated FP16 baseline separate from the experimental FP8 build.'
+}
+$DlssDll=(Get-Item -LiteralPath $DlssDll -ErrorAction Stop).FullName
+$compiler=Join-Path $HipRoot 'lib/llvm/bin/clang++.exe'
+if (!(Test-Path -LiteralPath $compiler)) { $compiler=Join-Path $HipRoot 'bin/clang++.exe' }
+if (!(Test-Path -LiteralPath $compiler)) { throw "HIP compiler missing under $HipRoot" }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$disassembler=Join-Path (Split-Path $compiler) 'llvm-objdump.exe'
+if (!(Test-Path -LiteralPath $disassembler)) { throw 'HIP llvm-objdump is required to confirm native FP8 instructions.' }
+foreach ($source in Get-ChildItem -LiteralPath (Join-Path $repo 'kernels/m') -Filter '*.hip' | Sort-Object Name) {
+    $flags=@()
+    if ((Get-Content -LiteralPath $source.FullName -Raw) -match '// d4r-build-flags: ([^\r\n]+)') { $flags=$Matches[1].Trim().Split(' ') }
+    if ($HardwarePacking) { $flags+='-DD4R_FP8_HW_PACK' }
+    $object=Join-Path $OutputDirectory ($source.BaseName+'.hsaco')
+    $ErrorActionPreference='Continue'
+    & $compiler -x hip -std=c++17 --offload-arch=gfx1201 --offload-device-only --no-gpu-bundle-output `
+        -mno-wavefrontsize64 -nogpuinc -nogpulib -O3 -DD4R_DEVICE_ONLY_MINIMAL `
+        -DSWIN_EXACT -DSWIN_EXACT_PV -DD4R_FP8_WMMA @flags $source.FullName `
+        -o $object > (Join-Path $OutputDirectory ($source.BaseName+'.build.stdout.log')) `
+        2> (Join-Path $OutputDirectory ($source.BaseName+'.build.stderr.log'))
+    $ErrorActionPreference='Stop'
+    if ($LASTEXITCODE) { throw "Experimental FP8 compile failed: $($source.Name)" }
+    $isa=Join-Path $OutputDirectory ($source.BaseName+'.isa.txt')
+    & $disassembler --disassemble --mcpu=gfx1201 $object > $isa
+    if ($LASTEXITCODE -or !(Select-String -LiteralPath $isa -Pattern 'v_wmma_f32_16x16x16_fp8_fp8')) {
+        throw "Native FP8 WMMA is absent from $($source.Name); no FP16 fallback is accepted."
+    }
+    if ($HardwarePacking -and !(Select-String -LiteralPath $isa -Pattern 'v_cvt_pk_fp8_f32')) { throw 'Native FP8 operand packing is absent from ISA.' }
+    Write-Host "Compiled gfx1201 FP8 WMMA: $($source.BaseName)"
+}
+if ($HardwarePacking) {
+    $probeDirectory=Join-Path $OutputDirectory 'packing-probe'
+    New-Item -ItemType Directory -Force $probeDirectory | Out-Null
+    & $compiler -x hip -std=c++17 --offload-arch=gfx1201 --offload-device-only --no-gpu-bundle-output `
+        -mno-wavefrontsize64 -nogpuinc -nogpulib -O3 -DD4R_DEVICE_ONLY_MINIMAL `
+        -DD4R_FP8_WMMA -DD4R_FP8_HW_PACK -DSWIN_EXACT -DSWIN_EXACT_PV `
+        (Join-Path $repo 'tools/windows/fp8_pack_probe.hip') -o (Join-Path $probeDirectory 'fp8_pack_probe.hsaco')
+    if ($LASTEXITCODE) { throw 'Native hardware packing diagnostic compile failed.' }
+}
+& python (Join-Path $repo 'kernels/tools/kernel_manifest.py') $OutputDirectory $DlssDll
+if ($LASTEXITCODE) { throw 'Experimental FP8 manifest generation failed.' }
+@{architecture='gfx1201'; family='M'; experimental=$true; nativeFp8=$true; accuracy=$true;
+    numerics='SWIN_EXACT; SWIN_EXACT_PV; FP8 WMMA for e4m3 GEMMs; exact FP16 attention';
+    validation='not validated; do not install before layer/full-network checks';
+    compiler=$compiler; compilerVersion=(& $compiler --version | Select-Object -First 1);
+    sourceCommit=(& git -C $repo rev-parse HEAD).Trim(); nativeFp8IsaVerified=$true; hardwarePacking=[bool]$HardwarePacking;
+    sourceWorkingTreeDirty=[bool](& git -C $repo status --porcelain);
+    dlssSha256=(Get-FileHash -LiteralPath $DlssDll -Algorithm SHA256).Hash;
+    modules=@(Get-ChildItem -LiteralPath $OutputDirectory -Filter '*.hsaco' | Get-FileHash -Algorithm SHA256)} |
+    ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'build-info.json') -Encoding UTF8
+Write-Host "Experimental native FP8 M objects: $OutputDirectory (baseline unchanged)"

scripts/windows/build-native-texture.ps1

@@ -0,0 +1,19 @@
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory=$true)][string]$DlssDll,
+    [string]$Kernel = 'hiluma_engine_output_depthinv_mvlo_hdr_max_v2_rel',
+    [string]$HipRoot = 'C:\Program Files\AMD\ROCm\7.2',
+    [string]$ZludaRoot,
+    [ValidateSet('cu','wgp')][string]$ShaderMode='cu',
+    [string]$GpuArch='gfx1201',
+    [string]$OutputDirectory
+)
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+[void](Get-D4RGpuTargetInfo $GpuArch)
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$ZludaRoot) { $ZludaRoot=Join-Path $repo 'dist/zluda-windows-final' }
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo "build/private-textures-$GpuArch" }
+& python (Join-Path $repo 'tools/windows/build_native_texture.py') --dlss-dll $DlssDll --hip-root $HipRoot `
+    --zluda-root $ZludaRoot --kernel $Kernel --output-directory $OutputDirectory --shader-mode $ShaderMode --gpu-arch $GpuArch
+if ($LASTEXITCODE) { throw "Native texture build failed ($LASTEXITCODE); inspect the output work directory." }

scripts/windows/build-optiscaler-windows.ps1

@@ -0,0 +1,93 @@
+[CmdletBinding()]
+param(
+    [string]$SourceRoot,
+    [string]$BuildToolsRoot,
+    [string]$InstallRoot,
+    [int]$Jobs = 6
+)
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$SourceRoot) { $SourceRoot = Join-Path $repo 'external/OptiScaler' }
+if (!$InstallRoot) { $InstallRoot = Join-Path $repo 'dist/optiscaler-windows-d4r' }
+$SourceRoot = [IO.Path]::GetFullPath($SourceRoot)
+$InstallRoot = [IO.Path]::GetFullPath($InstallRoot)
+$base = '45a2001303ddff632e279f77aef85ceede5832cb'
+$patches = @(Get-ChildItem -LiteralPath (Join-Path $repo 'patches/optiscaler') -Filter '*.patch' | Sort-Object Name)
+if (!$patches.Count) { throw 'OptiScaler source patches are missing.' }
+$previousPath = $env:PATH
+try {
+    # Git for Windows' submodule helper needs its POSIX utility directory.
+    $gitExe = (Get-Command git -ErrorAction Stop).Source
+    $gitInstall = [IO.Path]::GetFullPath((Join-Path (Split-Path $gitExe) '..'))
+    $gitUtilities = Join-Path $gitInstall 'usr/bin'
+    if (Test-Path -LiteralPath $gitUtilities) { $env:PATH = "$gitUtilities;$env:PATH" }
+    if (!(Test-Path -LiteralPath (Join-Path $SourceRoot '.git'))) {
+        & git clone --filter=blob:none --no-checkout https://github.com/optiscaler/OptiScaler.git $SourceRoot
+        if ($LASTEXITCODE) { throw 'OptiScaler clone failed.' }
+        & git -C $SourceRoot checkout --detach $base
+        if ($LASTEXITCODE) { throw 'Pinned OptiScaler checkout failed.' }
+    }
+    & git -C $SourceRoot merge-base --is-ancestor $base HEAD
+    if ($LASTEXITCODE) { throw "OptiScaler must be based on audited commit $base" }
+    foreach ($patch in $patches) {
+        $ErrorActionPreference = 'Continue'
+        & git -C $SourceRoot apply --reverse --check $patch.FullName 2>$null
+        $alreadyApplied = $LASTEXITCODE -eq 0
+        $ErrorActionPreference = 'Stop'
+        if (!$alreadyApplied) {
+            & git -C $SourceRoot apply --check $patch.FullName
+            if ($LASTEXITCODE) { throw "Source patch conflicts: $($patch.Name); existing changes retained." }
+            & git -C $SourceRoot apply $patch.FullName
+            if ($LASTEXITCODE) { throw "Source patch failed: $($patch.Name)" }
+        }
+    }
+    # Verify existing checkouts directly. A complete local checkout does not
+    # need Git's shell-based submodule helper (or a network connection).
+    $submodulePaths=@(& git -C $SourceRoot config --file .gitmodules --get-regexp '\.path$' | ForEach-Object { ($_ -split ' ',2)[1] })
+    $submodules=@()
+    foreach ($path in $submodulePaths) {
+        $tree=(& git -C $SourceRoot ls-tree HEAD -- $path) -split '\s+',4
+        if ($tree.Count -lt 4 -or $tree[0] -ne '160000') { throw "Missing pinned submodule: $path" }
+        $checkout=Join-Path $SourceRoot $path
+        $actual=if (Test-Path -LiteralPath (Join-Path $checkout '.git')) { (& git -C $checkout rev-parse HEAD).Trim() } else { '' }
+        if ($actual -ne $tree[2]) {
+            & git -C $SourceRoot submodule update --init --depth 1 -- $path
+            if ($LASTEXITCODE) { throw "Pinned OptiScaler submodule failed: $path" }
+            $actual=(& git -C $checkout rev-parse HEAD).Trim()
+            if ($actual -ne $tree[2]) { throw "Wrong submodule revision: $path" }
+        }
+        $submodules+=(' '+$actual+' '+$path)
+    }
+    if (!$BuildToolsRoot -and (Test-Path -LiteralPath (Join-Path $repo '.tools/vs2022/MSBuild/Current/Bin/MSBuild.exe'))) {
+        $BuildToolsRoot = Join-Path $repo '.tools/vs2022'
+    }
+    if (!$BuildToolsRoot) {
+        $vswhere = Join-Path ${env:ProgramFiles(x86)} 'Microsoft Visual Studio/Installer/vswhere.exe'
+        if (Test-Path -LiteralPath $vswhere) {
+            $BuildToolsRoot = & $vswhere -latest -products '*' -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath
+        }
+    }
+    if (!$BuildToolsRoot) { throw 'MSVC v143 Build Tools and Windows SDK 10.0.26100 are required; see patches/optiscaler/README.md.' }
+    $msbuild = Join-Path $BuildToolsRoot 'MSBuild/Current/Bin/MSBuild.exe'
+    if (!(Test-Path -LiteralPath $msbuild)) { throw "MSBuild missing: $msbuild" }
+    New-Item -ItemType Directory -Force $InstallRoot | Out-Null
+    $log = Join-Path $InstallRoot 'build.log'
+    $ErrorActionPreference = 'Continue'
+    & $msbuild (Join-Path $SourceRoot 'OptiScaler.sln') "/m:$Jobs" /p:Configuration=Release /p:Platform=x64 `
+        /p:PostBuildEventUseInBuild=false /verbosity:quiet "/flp:logfile=$log;verbosity=normal"
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "OptiScaler build failed ($LASTEXITCODE); see $log" }
+    foreach ($file in @('OptiScaler.dll', 'OptiScaler.pdb')) {
+        Copy-Item -LiteralPath (Join-Path $SourceRoot "x64/Release/$file") -Destination $InstallRoot -Force
+    }
+    Copy-Item -LiteralPath (Join-Path $SourceRoot 'LICENSE') -Destination (Join-Path $InstallRoot 'GPL-3.0.txt') -Force
+    foreach ($patch in $patches) { Copy-Item -LiteralPath $patch.FullName -Destination $InstallRoot -Force }
+    $metadata = @{base=$base; sourceCommit=(& git -C $SourceRoot rev-parse HEAD).Trim();
+        sourceDirty=[bool](& git -C $SourceRoot status --porcelain); backendAbi=1;
+        buildTools=$BuildToolsRoot; msbuildVersion=(& $msbuild -version -nologo | Select-Object -Last 1);
+        patches=@($patches | ForEach-Object { @{name=$_.Name; sha256=(Get-FileHash -LiteralPath $_.FullName -Algorithm SHA256).Hash} });
+        dllSha256=(Get-FileHash -LiteralPath (Join-Path $InstallRoot 'OptiScaler.dll') -Algorithm SHA256).Hash;
+        submodules=$submodules}
+    $metadata | ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $InstallRoot 'build-info.json') -Encoding UTF8
+    Write-Host "Built OptiScaler with external Windows d4r backend: $InstallRoot"
+} finally { $env:PATH = $previousPath }

scripts/windows/build-windows-gpu-matrix.ps1

@@ -0,0 +1,44 @@
+[CmdletBinding()]
+param(
+    [string[]]$GpuArchitectures,
+    [ValidateSet('stable','therock')][string]$RuntimeProfile='therock',
+    [string]$ZludaRoot, [string]$DlssDll,
+    [switch]$PackageGames,
+    [string]$BuildRoot, [string]$OutputRoot, [string]$ArchiveDirectory
+)
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$GpuArchitectures) { $GpuArchitectures=@(Get-D4RGpuTargets | ForEach-Object { $_.architecture }) }
+foreach ($arch in $GpuArchitectures) { [void](Get-D4RGpuTargetInfo $arch) }
+if (@($GpuArchitectures | Select-Object -Unique).Count -ne $GpuArchitectures.Count) { throw 'Duplicate GPU target.' }
+if (!$BuildRoot) { $BuildRoot=Join-Path $repo 'build/windows-gpu-coverage' }
+if (!$OutputRoot) { $OutputRoot=Join-Path $repo 'dist/windows-gpu-coverage' }
+if (!$ZludaRoot) { $ZludaRoot=Join-Path $repo 'dist/zluda-windows-final' }
+if ($ArchiveDirectory -and !$PackageGames) { throw 'ArchiveDirectory requires PackageGames.' }
+if ($PackageGames -and (!$DlssDll -or ![IO.Path]::IsPathRooted($DlssDll) -or !(Test-Path -LiteralPath $DlssDll))) {
+    throw 'PackageGames requires an absolute path to your local nvngx_dlss.dll; it will not be redistributed.'
+}
+New-Item -ItemType Directory -Force $BuildRoot | Out-Null
+if ($ArchiveDirectory) { New-Item -ItemType Directory -Force $ArchiveDirectory | Out-Null }
+$results=[Collections.Generic.List[object]]::new()
+foreach ($arch in $GpuArchitectures) {
+    $build="$BuildRoot-$arch"; $diag="$OutputRoot-$arch"
+    $log=Join-Path $BuildRoot "$arch-build.log"
+    Write-Host "Building $arch (compile/package only; no GPU workloads). Log: $log"
+    & (Join-Path $PSScriptRoot 'build-windows-rdna4.ps1') -RuntimeProfile $RuntimeProfile -GpuArch $arch `
+        -ZludaRoot $ZludaRoot -BuildDirectory $build -InstallDirectory $diag *> $log
+    $row=[ordered]@{architecture=$arch; compiled=$true; hardwareTestExecuted=$false; buildDirectory=$build; diagnosticRoot=$diag; log=$log}
+    if ($PackageGames) {
+        $k="$BuildRoot-native-k-$arch"; $m="$BuildRoot-native-m-$arch"; $game="$OutputRoot-game-$arch"
+        & (Join-Path $PSScriptRoot 'stage-native-k.ps1') -DlssDll $DlssDll -PackageRoot $diag -GpuArch $arch -OutputDirectory $k
+        & (Join-Path $PSScriptRoot 'stage-native-m.ps1') -DlssDll $DlssDll -PackageRoot $diag -GpuArch $arch -OutputDirectory $m
+        $packageArgs=@{DiagnosticRoot=$diag; GpuArch=$arch; PackageRoot=$game; ZludaRoot=$ZludaRoot; KernelKRoot=$k; KernelMRoot=$m}
+        if ($ArchiveDirectory) { $packageArgs.ArchivePath=Join-Path $ArchiveDirectory "d4r-windows-$arch.zip" }
+        & (Join-Path $PSScriptRoot 'package-windows-game.ps1') @packageArgs
+        $row.gamePackage=$game
+    }
+    $results.Add($row)
+    $results | ConvertTo-Json -Depth 5 | Set-Content (Join-Path $BuildRoot 'matrix-build.json') -Encoding UTF8
+    Write-Host "Compiled $arch; hardware validation remains separate."
+}

scripts/windows/build-windows-rdna4.ps1

@@ -0,0 +1,79 @@
+[CmdletBinding()]
+param(
+    [string]$HipRoot = $env:HIP_PATH,
+    [ValidateSet('stable', 'therock')][string]$RuntimeProfile = 'stable',
+    [string]$GpuArch = 'gfx1201',
+    [string]$ZludaRoot,
+    [string]$ToolchainRoot,
+    [string]$BuildDirectory,
+    [string]$InstallDirectory
+)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+[void](Get-D4RGpuTargetInfo $GpuArch)
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if ($RuntimeProfile -eq 'therock') {
+    if (!$PSBoundParameters.ContainsKey('HipRoot')) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+    if (!$BuildDirectory) { $BuildDirectory = Join-Path $repo 'build/windows-rdna4-therock' }
+    if (!$InstallDirectory) { $InstallDirectory = Join-Path $repo 'dist/windows-rdna4-therock' }
+}
+if (!$HipRoot) { $HipRoot = 'C:\Program Files\AMD\ROCm\7.2' }
+if (!$BuildDirectory) { $BuildDirectory = Join-Path $repo 'build/windows-rdna4' }
+if (!$InstallDirectory) { $InstallDirectory = Join-Path $repo 'dist/windows-rdna4-diagnostics' }
+if ($GpuArch -ne 'gfx1201') {
+    if (!$PSBoundParameters.ContainsKey('BuildDirectory')) { $BuildDirectory += "-$GpuArch" }
+    if (!$PSBoundParameters.ContainsKey('InstallDirectory')) { $InstallDirectory += "-$GpuArch" }
+}
+$HipRoot = [IO.Path]::GetFullPath($HipRoot).TrimEnd('\', '/')
+$BuildDirectory = [IO.Path]::GetFullPath($BuildDirectory).TrimEnd('\', '/')
+$InstallDirectory = [IO.Path]::GetFullPath($InstallDirectory).TrimEnd('\', '/')
+if (!$ZludaRoot -and (Test-Path (Join-Path $repo '.tools/zluda/zluda/nvcuda.dll'))) {
+    $ZludaRoot = Join-Path $repo '.tools/zluda/zluda'
+}
+if (!$ToolchainRoot -and (Test-Path (Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64'))) {
+    $ToolchainRoot = Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64'
+}
+$cmakeCommand = Get-Command cmake -ErrorAction SilentlyContinue
+$cmake = if ($cmakeCommand) { $cmakeCommand.Source } else { Join-Path $repo '.tools/python/cmake/data/bin/cmake.exe' }
+$ninjaCommand = Get-Command ninja -ErrorAction SilentlyContinue
+$ninja = if ($ninjaCommand) { $ninjaCommand.Source } else { Join-Path $repo '.tools/python/ninja/data/bin/ninja.exe' }
+if (!(Test-Path $ninja)) { $ninja = Join-Path $repo '.tools/python/bin/ninja.exe' }
+if (!(Test-Path $cmake) -or !(Test-Path $ninja)) {
+    throw 'CMake >=3.24 and Ninja required. See docs/windows-rdna4-port.md for local tool setup.'
+}
+New-Item -ItemType Directory -Force $BuildDirectory | Out-Null
+$minhook = Join-Path $repo 'external/MinHook'
+if (!(Test-Path (Join-Path $minhook 'include/MinHook.h'))) {
+    & git clone --depth 1 --branch v1.3.4 https://github.com/TsudaKageyu/minhook.git $minhook
+    if ($LASTEXITCODE) { throw 'MinHook 1.3.4 source download failed.' }
+}
+$minhookCommit = (& git -C $minhook rev-parse HEAD).Trim()
+if ($minhookCommit -ne 'c3fcafdc10146beb5919319d0683e44e3c30d537') {
+    throw "Expected audited MinHook 1.3.4 source, found $minhookCommit"
+}
+$originalPath = $env:PATH
+try {
+    $configure = @('--fresh', '-S', $repo, '-B', $BuildDirectory, '-G', 'Ninja', '-DCMAKE_BUILD_TYPE=RelWithDebInfo',
+        "-DCMAKE_MAKE_PROGRAM=$ninja", "-DD4R_HIP_ROOT=$HipRoot", "-DD4R_GPU_ARCH=$GpuArch", "-DCMAKE_INSTALL_PREFIX=$InstallDirectory")
+    if ($ToolchainRoot) {
+        $compiler = Join-Path $ToolchainRoot 'bin/x86_64-w64-mingw32-clang++.exe'
+        if (!(Test-Path $compiler)) { throw "Compiler missing: $compiler" }
+        $env:PATH = "$(Join-Path $ToolchainRoot 'bin');$originalPath"
+        $configure += "-DCMAKE_CXX_COMPILER=$compiler"
+        $configure += "-DCMAKE_C_COMPILER=$(Join-Path $ToolchainRoot 'bin/x86_64-w64-mingw32-clang.exe')"
+    }
+    if ($ZludaRoot) { $configure += "-DD4R_ZLUDA_ROOT=$ZludaRoot" }
+    $ErrorActionPreference = 'Continue'
+    & $cmake @configure 2>&1 | Tee-Object (Join-Path $BuildDirectory 'configure.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "CMake configure exit=$LASTEXITCODE" }
+    $ErrorActionPreference = 'Continue'
+    & $cmake --build $BuildDirectory --parallel 4 2>&1 | Tee-Object (Join-Path $BuildDirectory 'build.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "Build exit=$LASTEXITCODE" }
+    $ErrorActionPreference = 'Continue'
+    & $cmake --install $BuildDirectory 2>&1 | Tee-Object (Join-Path $BuildDirectory 'install.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "Install exit=$LASTEXITCODE" }
+    Write-Host "Built diagnostics: $InstallDirectory"
+} finally { $env:PATH = $originalPath }

scripts/windows/build-zluda-helpers.ps1

@@ -0,0 +1,70 @@
+[CmdletBinding()]
+param([string]$SourceRoot, [string]$HipRoot = 'C:\Program Files\AMD\ROCm\7.2', [string]$WorkRoot)
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$SourceRoot) { $SourceRoot = Join-Path $repo 'external/ZLUDA' }
+if (!$WorkRoot) { $WorkRoot = Join-Path $repo 'build/zluda-helpers-windows' }
+$toolchain = Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64'
+$compiler = Join-Path $HipRoot 'bin/clang++.exe'
+$dis = Join-Path $HipRoot 'bin/llvm-dis.exe'
+$assembler = Join-Path $HipRoot 'bin/llvm-as.exe'
+$ocml = Join-Path $HipRoot 'amdgcn/bitcode/ocml.bc'
+foreach ($file in @($compiler,$dis,$assembler,$ocml)) {
+    if (!(Test-Path $file)) { throw "HIP helper dependency missing: $file" }
+}
+New-Item -ItemType Directory -Force $WorkRoot | Out-Null
+$configInclude = Join-Path $WorkRoot 'libcxx-config'
+New-Item -ItemType Directory -Force $configInclude | Out-Null
+Copy-Item -LiteralPath (Join-Path $toolchain 'include/c++/v1/__config_site') -Destination $configInclude -Force
+Copy-Item -LiteralPath (Join-Path $SourceRoot 'ext/llvm-project/libcxx/vendor/llvm/default_assertion_handler.in') `
+    -Destination (Join-Path $configInclude '__assertion_handler') -Force
+# HIP 7.2's long shuffle overloads assume every non-MSVC compiler has LP64.
+# Windows GNU also has 32-bit long. Correct that public header in a private
+# mirror; the installed SDK remains untouched and the GPU target is unchanged.
+$hipInclude = Join-Path $WorkRoot 'hip-include'
+New-Item -ItemType Directory -Force $hipInclude | Out-Null
+Copy-Item -LiteralPath (Join-Path $HipRoot 'include/hip') -Destination $hipInclude -Recurse -Force
+$warpHeader = Join-Path $hipInclude 'hip/amd_detail/amd_warp_functions.h'
+$warpSource = [IO.File]::ReadAllText($warpHeader)
+$warpSource = $warpSource.Replace('#ifndef _MSC_VER', '#if __SIZEOF_LONG__ == 8')
+[IO.File]::WriteAllText($warpHeader,$warpSource,[Text.UTF8Encoding]::new($false))
+$variants = @(
+    @{Suffix=''; Flags=@()},
+    @{Suffix='_constrained'; Flags=@('-ffp-model=strict','-ffp-exception-behavior=ignore')},
+    @{Suffix='_w64'; Flags=@('-mwavefrontsize64','-DD4R_WAVE64')},
+    @{Suffix='_constrained_w64'; Flags=@('-ffp-model=strict','-ffp-exception-behavior=ignore','-mwavefrontsize64','-DD4R_WAVE64')}
+)
+foreach ($variant in $variants) {
+    $name = 'zluda_ptx_impl' + $variant.Suffix
+    $raw = Join-Path $WorkRoot "$name.raw.bc"
+    $ir = Join-Path $WorkRoot "$name.ll"
+    $output = Join-Path $SourceRoot "ptx/lib/$name.bc"
+    $arguments = @('-x','hip','-std=c++20','--target=x86_64-w64-windows-gnu','-stdlib=libc++',
+        '--offload-arch=gfx1030','--offload-device-only','-emit-llvm','-c','-nogpulib','-O3',
+        '-mno-wavefrontsize64','-DHIP_ENABLE_WARP_SYNC_BUILTINS',
+        '-Xclang','-fdenormal-fp-math=dynamic',
+        '-isystem',(Join-Path $SourceRoot 'ext/llvm-project/libcxx/include'),
+        '-isystem',$configInclude,
+        '-isystem',(Join-Path $toolchain 'include'),
+        '-I',$hipInclude,
+        '-Xclang','-mlink-bitcode-file','-Xclang',$ocml)
+    $arguments += $variant.Flags
+    $arguments += @('-o',$raw,(Join-Path $SourceRoot 'ptx/lib/zluda_ptx_impl.cpp'))
+    $ErrorActionPreference = 'Continue'
+    & $compiler @arguments 2>&1 | Tee-Object (Join-Path $WorkRoot "$name.compile.log")
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "PTX helper compile failed: $name ($LASTEXITCODE)" }
+    & $dis $raw -o $ir
+    if ($LASTEXITCODE) { throw "Disassemble failed: $raw" }
+    $clean = [Collections.Generic.List[string]]::new()
+    foreach ($line in [IO.File]::ReadLines($ir)) {
+        if ($line -match '@llvm.used|wchar_size|llvm.module.flags|__hip_cuid') { continue }
+        $line = $line -replace 'optnone','' -replace 'define hidden','define linkonce_odr'
+        $line = $line -replace '"target-cpu"="gfx1030"','' -replace '"target-features"="[^"]+"',''
+        $clean.Add($line)
+    }
+    [IO.File]::WriteAllLines($ir,$clean,[Text.UTF8Encoding]::new($false))
+    & $assembler $ir -o $output
+    if ($LASTEXITCODE) { throw "Assemble failed: $ir" }
+    Write-Host "Built $output ($((Get-Item $output).Length) bytes)"
+}

scripts/windows/build-zluda-llvm.ps1

@@ -0,0 +1,45 @@
+[CmdletBinding()]
+param([string]$SourceRoot, [string]$BuildRoot, [int]$Jobs = 4)
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$SourceRoot) { $SourceRoot = Join-Path $repo 'external/ZLUDA' }
+if (!$BuildRoot) { $BuildRoot = Join-Path $repo 'build/zluda-llvm-windows-gnu' }
+$toolchain = Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64'
+$cmake = Join-Path $repo '.tools/python/cmake/data/bin/cmake.exe'
+$ninja = Join-Path $repo '.tools/python/bin/ninja.exe'
+if (!(Test-Path $ninja)) { $ninja = Join-Path $repo '.tools/python/ninja/data/bin/ninja.exe' }
+if (!(Test-Path (Join-Path $SourceRoot 'ext/llvm-project/llvm/CMakeLists.txt'))) {
+    throw 'Run git submodule update --init --depth 1 ext/llvm-project in the ZLUDA checkout.'
+}
+New-Item -ItemType Directory -Force $BuildRoot | Out-Null
+& (Join-Path $PSScriptRoot 'prepare-zluda-llvm-source.ps1') -LlvmSourceRoot (Join-Path $SourceRoot 'ext/llvm-project')
+$oldPath = $env:PATH
+try {
+    $env:PATH = "$(Join-Path $toolchain 'bin');$oldPath"
+    $arguments = @('-S', (Join-Path $SourceRoot 'ext/llvm-project/llvm'), '-B', $BuildRoot,
+        '-G', 'Ninja', "-DCMAKE_MAKE_PROGRAM=$ninja", '-DCMAKE_BUILD_TYPE=Release',
+        "-DCMAKE_C_COMPILER=$(Join-Path $toolchain 'bin/x86_64-w64-mingw32-clang.exe')",
+        "-DCMAKE_CXX_COMPILER=$(Join-Path $toolchain 'bin/x86_64-w64-mingw32-clang++.exe')",
+        '-DLLVM_TARGETS_TO_BUILD=AMDGPU', '-DLLVM_ENABLE_PROJECTS=llvm;lld',
+        '-DLLVM_ENABLE_WARNINGS=OFF', '-DLLVM_ENABLE_TERMINFO=OFF', '-DLLVM_ENABLE_LIBXML2=OFF',
+        '-DLLVM_ENABLE_LIBEDIT=OFF', '-DLLVM_ENABLE_LIBPFM=OFF', '-DLLVM_ENABLE_ZLIB=OFF',
+        '-DLLVM_ENABLE_ZSTD=OFF', '-DLLVM_INCLUDE_BENCHMARKS=OFF', '-DLLVM_INCLUDE_EXAMPLES=OFF',
+        '-DLLVM_INCLUDE_TESTS=OFF', '-DLLVM_BUILD_TESTS=OFF', '-DLLVM_BUILD_TOOLS=OFF',
+        '-DLLVM_OPTIMIZED_TABLEGEN=ON', '-DLLVM_PARALLEL_LINK_JOBS=1')
+    $ErrorActionPreference = 'Continue'
+    & $cmake @arguments 2>&1 | Tee-Object (Join-Path $BuildRoot 'configure.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "LLVM configure failed ($LASTEXITCODE)" }
+    $ErrorActionPreference = 'Continue'
+    & $cmake --build $BuildRoot --parallel $Jobs --target llvm-config llvm-libraries lldCommon lldELF `
+        2>&1 | Tee-Object (Join-Path $BuildRoot 'build.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "LLVM build failed ($LASTEXITCODE)" }
+    & (Join-Path $BuildRoot 'bin/llvm-config.exe') --version
+    if ($LASTEXITCODE) { throw 'llvm-config verification failed' }
+    @{sourceBase=(& git -C (Join-Path $SourceRoot 'ext/llvm-project') rev-parse HEAD).Trim(); fullSourceDeltaVerified=$true;
+      sourcePatches=@(Get-ChildItem (Join-Path $repo 'patches/zluda-llvm') -Filter *.patch | ForEach-Object {
+        @{name=$_.Name; sha256=(Get-FileHash -LiteralPath $_.FullName).Hash}})} |
+        ConvertTo-Json -Depth 5 | Set-Content (Join-Path $BuildRoot 'd4r-llvm-build-info.json') -Encoding UTF8
+    Write-Host "Native Windows LLVM: $BuildRoot"
+} finally { $env:PATH = $oldPath }

scripts/windows/build-zluda-windows.ps1

@@ -0,0 +1,96 @@
+[CmdletBinding()]
+param([string]$SourceRoot, [string]$LlvmBuildRoot, [string]$InstallRoot, [switch]$FetchOnly, [switch]$CacheTestsOnly, [switch]$CompilerTestsOnly, [int]$Jobs = 4)
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$SourceRoot) { $SourceRoot = Join-Path $repo 'external/ZLUDA' }
+if (!$LlvmBuildRoot) { $LlvmBuildRoot = Join-Path $repo 'build/zluda-llvm-windows-gnu' }
+if (!$InstallRoot) { $InstallRoot = Join-Path $repo 'dist/zluda-windows-final' }
+$rust = Join-Path $repo '.tools/rust-1.98.1-gnu'
+$toolchain = Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64'
+$target = Join-Path $repo 'build/zluda-rust-windows-gnu'
+New-Item -ItemType Directory -Force $target,$InstallRoot | Out-Null
+$settings = @{
+    PATH="$(Join-Path $rust 'bin');$(Join-Path $toolchain 'bin');$(Join-Path $repo '.tools/python/cmake/data/bin');$(Join-Path $repo '.tools/python/bin');C:\Program Files\Git\usr\bin;$env:PATH"
+    CARGO_HOME=(Join-Path $repo '.tools/cargo-home')
+    CARGO_TARGET_DIR=$target
+    CARGO_BUILD_JOBS="$Jobs"
+    RUSTC=(Join-Path $rust 'bin/rustc.exe')
+    CC=(Join-Path $toolchain 'bin/x86_64-w64-mingw32-clang.exe')
+    CXX=(Join-Path $toolchain 'bin/x86_64-w64-mingw32-clang++.exe')
+    AR=(Join-Path $toolchain 'bin/llvm-ar.exe')
+    CXXSTDLIB='c++'
+    LIBRARY_PATH=(Join-Path $rust 'lib/rustlib/x86_64-pc-windows-gnu/lib/self-contained')
+    CARGO_TARGET_X86_64_PC_WINDOWS_GNU_LINKER=(Join-Path $toolchain 'bin/x86_64-w64-mingw32-clang.exe')
+    CARGO_TARGET_X86_64_PC_WINDOWS_GNU_RUSTFLAGS='-C link-arg=-static'
+    ZLUDA_LLVM_BUILD_DIR=$LlvmBuildRoot
+}
+$previous = @{}
+foreach ($name in $settings.Keys) {
+    $previous[$name] = [Environment]::GetEnvironmentVariable($name,'Process')
+    [Environment]::SetEnvironmentVariable($name,$settings[$name],'Process')
+}
+Push-Location $SourceRoot
+try {
+    $cargo = Join-Path $rust 'bin/cargo.exe'
+    if (!(Test-Path $cargo)) { throw 'Run setup-rust-toolchain.ps1 first.' }
+    if ($CompilerTestsOnly) {
+        $ErrorActionPreference = 'Continue'
+        & $cargo test --locked --release --target x86_64-pc-windows-gnu -p llvm_zluda shader_mode_tests `
+            2>&1 | Tee-Object (Join-Path $target 'compiler-tests.log')
+        $ErrorActionPreference = 'Stop'
+        if ($LASTEXITCODE) { throw "ZLUDA compiler regression tests failed ($LASTEXITCODE)" }
+        return
+    }
+    if ($CacheTestsOnly) {
+        $ErrorActionPreference = 'Continue'
+        & $cargo test --locked --release --target x86_64-pc-windows-gnu -p zluda_cache `
+            2>&1 | Tee-Object (Join-Path $target 'cache-tests.log')
+        $ErrorActionPreference = 'Stop'
+        if ($LASTEXITCODE) { throw "ZLUDA cache regression tests failed ($LASTEXITCODE)" }
+        return
+    }
+    if ($FetchOnly) {
+        $ErrorActionPreference = 'Continue'
+        & $cargo fetch --locked --target x86_64-pc-windows-gnu 2>&1 | Tee-Object (Join-Path $target 'fetch.log')
+        $ErrorActionPreference = 'Stop'
+        if ($LASTEXITCODE) { throw "Cargo fetch failed ($LASTEXITCODE)" }
+        return
+    }
+    if (!(Test-Path (Join-Path $LlvmBuildRoot 'bin/llvm-config.exe'))) { throw 'Run build-zluda-llvm.ps1 first.' }
+    foreach ($variant in @('','_constrained','_w64','_constrained_w64')) {
+        if (!(Test-Path "ptx/lib/zluda_ptx_impl$variant.bc")) { throw 'Run build-zluda-helpers.ps1 first.' }
+    }
+    $ErrorActionPreference = 'Continue'
+    & $cargo build --locked --release --target x86_64-pc-windows-gnu -p zluda -p nvapi -p zluda_trace `
+        2>&1 | Tee-Object (Join-Path $target 'build.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "ZLUDA build failed ($LASTEXITCODE)" }
+    $ErrorActionPreference = 'Continue'
+    & $cargo build --locked --release --target x86_64-pc-windows-gnu -p ptx --example d4r_emit `
+        2>&1 | Tee-Object (Join-Path $target 'emit-build.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "d4r_emit build failed ($LASTEXITCODE)" }
+    $release = Join-Path $target 'x86_64-pc-windows-gnu/release'
+    Copy-Item -LiteralPath (Join-Path $release 'nvcuda.dll') -Destination $InstallRoot -Force
+    Copy-Item -LiteralPath (Join-Path $release 'nvapi64.dll') -Destination $InstallRoot -Force
+    # The C++ dependencies select libc++ dynamically even when Rust requests
+    # static GNU support libraries. Keep these portable runtime DLLs local.
+    foreach ($runtime in @('libc++.dll', 'libunwind.dll')) {
+        Copy-Item -LiteralPath (Join-Path $toolchain "bin/$runtime") -Destination $InstallRoot -Force
+    }
+    New-Item -ItemType Directory -Force (Join-Path $InstallRoot 'trace') | Out-Null
+    Copy-Item -LiteralPath (Join-Path $release 'zluda_trace.dll') -Destination (Join-Path $InstallRoot 'trace/nvcuda.dll') -Force
+    Copy-Item -LiteralPath (Join-Path $release 'examples/d4r_emit.exe') -Destination $InstallRoot -Force
+    @{base='ee2f25a180099fa42f36b2346732e1f2470a03ad'; target='x86_64-pc-windows-gnu';
+        sourceCommit=(& git rev-parse HEAD); workingTreeDirty=[bool](& git status --porcelain);
+        rust='1.98.1'; llvm=(& (Join-Path $LlvmBuildRoot 'bin/llvm-config.exe') --version);
+        llvmSource=$(if (Test-Path (Join-Path $LlvmBuildRoot 'd4r-llvm-build-info.json')) {
+            Get-Content (Join-Path $LlvmBuildRoot 'd4r-llvm-build-info.json') -Raw | ConvertFrom-Json
+        } else { $null });
+        files=@(Get-ChildItem -LiteralPath $InstallRoot -Filter '*.dll' | Get-FileHash -Algorithm SHA256)} |
+        ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $InstallRoot 'build-info.json') -Encoding UTF8
+    Write-Host "Native Windows d4r ZLUDA runtime: $InstallRoot"
+} finally {
+    Pop-Location
+    foreach ($name in $previous.Keys) { [Environment]::SetEnvironmentVariable($name,$previous[$name],'Process') }
+}

scripts/windows/capture-game-window.ps1

@@ -0,0 +1,58 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][int]$GameProcessId, [Parameter(Mandatory=$true)][string]$OutputPath)
+$ErrorActionPreference = 'Stop'
+Add-Type -AssemblyName System.Drawing
+if (!('D4RWindowCapture' -as [type])) {
+    Add-Type @'
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+public static class D4RWindowCapture {
+    public delegate bool Callback(IntPtr window, IntPtr data);
+    [StructLayout(LayoutKind.Sequential)] public struct Rect { public int Left, Top, Right, Bottom; }
+    [DllImport("user32.dll")] public static extern bool EnumWindows(Callback callback, IntPtr data);
+    [DllImport("user32.dll")] public static extern uint GetWindowThreadProcessId(IntPtr window, out uint process);
+    [DllImport("user32.dll")] public static extern bool GetWindowRect(IntPtr window, out Rect rect);
+    [DllImport("user32.dll",CharSet=CharSet.Unicode)] public static extern int GetWindowText(IntPtr window, StringBuilder text, int count);
+    [DllImport("user32.dll")] public static extern bool IsWindowVisible(IntPtr window);
+    [DllImport("user32.dll")] public static extern IntPtr GetForegroundWindow();
+    [DllImport("user32.dll")] public static extern IntPtr SetThreadDpiAwarenessContext(IntPtr context);
+}
+'@
+}
+$windows = [Collections.Generic.List[object]]::new()
+$previousDpi=[D4RWindowCapture]::SetThreadDpiAwarenessContext([IntPtr](-4))
+try {
+$callback = [D4RWindowCapture+Callback]{ param($window,$data)
+    [uint32]$owner = 0
+    [void][D4RWindowCapture]::GetWindowThreadProcessId($window,[ref]$owner)
+    if ($owner -eq $GameProcessId) {
+        $rect = [D4RWindowCapture+Rect]::new()
+        [void][D4RWindowCapture]::GetWindowRect($window,[ref]$rect)
+        $title = [Text.StringBuilder]::new(512)
+        [void][D4RWindowCapture]::GetWindowText($window,$title,512)
+        $windows.Add([pscustomobject]@{handle=$window; title=$title.ToString(); visible=[D4RWindowCapture]::IsWindowVisible($window); rect=$rect;
+            area=($rect.Right-$rect.Left)*($rect.Bottom-$rect.Top)})
+    }
+    return $true
+}
+[void][D4RWindowCapture]::EnumWindows($callback,[IntPtr]::Zero)
+$windows | Select-Object handle,title,visible,area | Format-Table
+$chosen = $windows | Where-Object { $_.visible -and $_.area -gt 4096 } | Sort-Object area -Descending | Select-Object -First 1
+if (!$chosen) { throw "No visible game window for PID $GameProcessId" }
+if ([D4RWindowCapture]::GetForegroundWindow() -ne $chosen.handle) {
+    throw 'Game window is not foreground; capture refused to avoid including unrelated overlapping windows.'
+}
+$rect = $chosen.rect
+$bitmap = [Drawing.Bitmap]::new($rect.Right-$rect.Left,$rect.Bottom-$rect.Top)
+$graphics = [Drawing.Graphics]::FromImage($bitmap)
+try {
+    $graphics.CopyFromScreen($rect.Left,$rect.Top,0,0,$bitmap.Size)
+    $bitmap.Save([IO.Path]::GetFullPath($OutputPath),[Drawing.Imaging.ImageFormat]::Png)
+} finally {
+    $graphics.Dispose(); $bitmap.Dispose()
+}
+Write-Host "Captured game window: $OutputPath"
+} finally {
+    if ($previousDpi -ne [IntPtr]::Zero) { [void][D4RWindowCapture]::SetThreadDpiAwarenessContext($previousDpi) }
+}

scripts/windows/capture-presentmon.ps1

@@ -0,0 +1,101 @@
+[CmdletBinding()]
+param(
+    [int]$TargetProcessId,
+    [string]$ProcessName = 'SHProto-Win64-Shipping',
+    [ValidateRange(5,300)][int]$Seconds = 30,
+    [ValidateRange(0,300)][int]$DelaySeconds = 0,
+    [string]$PresentMonPath,
+    [switch]$GpuTelemetry,
+    [string]$TelemetryPath,
+    [string]$GpuName = 'RX 9070 XT',
+    [string]$OutputDirectory
+)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$PresentMonPath) {
+    $PresentMonPath=Join-Path $repo '.tools/presentmon-2.6.0/PresentMon.exe'
+    if (!(Test-Path -LiteralPath $PresentMonPath)) {
+        New-Item -ItemType Directory -Force (Split-Path $PresentMonPath) | Out-Null
+        Invoke-WebRequest -UseBasicParsing -Uri 'https://github.com/GameTechDev/PresentMon/releases/download/v2.6.0/PresentMon-2.6.0-x64.exe' -OutFile $PresentMonPath
+    }
+}
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo ('test-results/presentmon-' + (Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
+$PresentMonPath=(Get-Item -LiteralPath $PresentMonPath -ErrorAction Stop).FullName
+if ((Get-FileHash -LiteralPath $PresentMonPath -Algorithm SHA256).Hash.ToLowerInvariant() -ne
+    'b2a706bc6ad475749e3b7e3409263aa1e6906d45bdcf993f6dbc0f660188f1af') {
+    throw 'Expected the official PresentMon 2.6.0 x64 CLI. See docs/windows-performance.md.'
+}
+if ($TargetProcessId) { $target=Get-Process -Id $TargetProcessId -ErrorAction Stop }
+else {
+    $targets=@(Get-Process -Name $ProcessName -ErrorAction Stop)
+    if ($targets.Count -ne 1) { throw 'Select one running game process using -TargetProcessId.' }
+    $target=$targets[0]
+}
+$OutputDirectory=[IO.Path]::GetFullPath($OutputDirectory)
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$csv=Join-Path $OutputDirectory 'presentmon.csv'
+if (Test-Path -LiteralPath $csv) { throw 'Preserve the existing capture; choose another OutputDirectory.' }
+if ($TelemetryPath) { $GpuTelemetry=$true }
+if ($GpuTelemetry) {
+    if (!$TelemetryPath) { $TelemetryPath=Join-Path $repo 'build/gpu-telemetry/d4r_gpu_telemetry.exe' }
+    $TelemetryPath=(Get-Item -LiteralPath $TelemetryPath -ErrorAction Stop).FullName
+    if ($GpuName.Contains('"')) { throw 'GpuName cannot contain a double quote.' }
+    foreach ($file in @('gpu-telemetry.csv','gpu-telemetry.stderr.log','gpu-telemetry-environment.json')) {
+        if (Test-Path -LiteralPath (Join-Path $OutputDirectory $file)) { throw "Preserve existing $file; choose another OutputDirectory." }
+    }
+}
+@{version='2.6.0'; executable=$PresentMonPath; sha256=(Get-FileHash -LiteralPath $PresentMonPath -Algorithm SHA256).Hash;
+    targetProcessId=$target.Id; processName=$target.ProcessName; seconds=$Seconds; delaySeconds=$DelaySeconds;
+    gpuTelemetryRequested=[bool]$GpuTelemetry;
+    hwsRegistry=$(Get-ItemPropertyValue -LiteralPath 'HKLM:/SYSTEM/CurrentControlSet/Control/GraphicsDrivers' -Name HwSchMode -ErrorAction SilentlyContinue);
+    driver=@(Get-CimInstance Win32_VideoController | Select-Object Name,DriverVersion)} |
+    ConvertTo-Json -Depth 4 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'presentmon-environment.json') -Encoding UTF8
+# Unique ETW session: never stop or replace an existing user's trace. The CLI
+# terminates itself at the bound/process exit, without a service installation.
+$session='D4R_' + [Guid]::NewGuid().ToString('N')
+$telemetry=$null; $telemetryStarted=$false; $outStream=$null; $errStream=$null; $outTask=$null; $errTask=$null
+try {
+    if ($GpuTelemetry) {
+        $info=[Diagnostics.ProcessStartInfo]::new()
+        $info.FileName=$TelemetryPath; $info.UseShellExecute=$false; $info.CreateNoWindow=$true
+        $info.RedirectStandardOutput=$true; $info.RedirectStandardError=$true
+        $info.Arguments="--seconds $Seconds --delay-ms $($DelaySeconds*1000) --interval-ms 500 --target-pid $($target.Id) --gpu-name `"$GpuName`""
+        $outStream=[IO.File]::Open((Join-Path $OutputDirectory 'gpu-telemetry.csv'),[IO.FileMode]::CreateNew,[IO.FileAccess]::Write,[IO.FileShare]::Read)
+        $errStream=[IO.File]::Open((Join-Path $OutputDirectory 'gpu-telemetry.stderr.log'),[IO.FileMode]::CreateNew,[IO.FileAccess]::Write,[IO.FileShare]::Read)
+        $telemetry=[Diagnostics.Process]::new(); $telemetry.StartInfo=$info
+        if (!$telemetry.Start()) { throw 'GPU telemetry process failed to start.' }
+        $telemetryStarted=$true
+        $outTask=$telemetry.StandardOutput.BaseStream.CopyToAsync($outStream)
+        $errTask=$telemetry.StandardError.BaseStream.CopyToAsync($errStream)
+    }
+    & $PresentMonPath --process_id $target.Id --timed $Seconds --delay $DelaySeconds --terminate_after_timed --terminate_on_proc_exit --session_name $session --no_console_stats --no_track_input --qpc_time_ms --output_file $csv 2>&1 |
+        Tee-Object -FilePath (Join-Path $OutputDirectory 'presentmon-console.log')
+    if ($LASTEXITCODE) { throw "PresentMon failed with exit code $LASTEXITCODE; see presentmon-console.log." }
+} finally {
+    try { if ($telemetryStarted) {
+        $timedOut=$false
+        if (!$telemetry.HasExited -and !$telemetry.WaitForExit(30000)) { $timedOut=$true; $telemetry.Kill(); $telemetry.WaitForExit() }
+        if ($outTask) { [void]$outTask.GetAwaiter().GetResult() }
+        if ($errTask) { [void]$errTask.GetAwaiter().GetResult() }
+        $driverDll=Join-Path $env:WINDIR 'System32/amdadlx64.dll'
+        $driverInfo=$null
+        if (Test-Path -LiteralPath $driverDll) {
+            $driverInfo=@{path=$driverDll; version=(Get-Item -LiteralPath $driverDll).VersionInfo.FileVersion;
+                sha256=(Get-FileHash -LiteralPath $driverDll -Algorithm SHA256).Hash}
+        }
+        @{executable=$TelemetryPath; sha256=(Get-FileHash -LiteralPath $TelemetryPath -Algorithm SHA256).Hash;
+            exitCode=$telemetry.ExitCode; timeout=$timedOut; targetProcessId=$target.Id; gpuName=$GpuName;
+            intervalMs=500; driverDll=$driverInfo; readOnly=$true;
+            buildInfo=$(if (Test-Path -LiteralPath (Join-Path (Split-Path $TelemetryPath) 'build-info.json')) {
+                Get-Content -LiteralPath (Join-Path (Split-Path $TelemetryPath) 'build-info.json') -Raw | ConvertFrom-Json
+            })} |
+            ConvertTo-Json -Depth 6 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'gpu-telemetry-environment.json') -Encoding UTF8
+        if ($telemetry.ExitCode -ne 0) { Write-Warning 'GPU telemetry failed; retain PresentMon capture and see gpu-telemetry.stderr.log.' }
+    } } finally {
+        if ($telemetry) { $telemetry.Dispose() }
+        if ($outStream) { $outStream.Dispose() }
+        if ($errStream) { $errStream.Dispose() }
+    }
+}
+if (!(Test-Path -LiteralPath $csv) -or (Get-Item -LiteralPath $csv).Length -eq 0) { throw 'PresentMon captured no frames.' }
+Write-Host "PresentMon capture: $csv"

scripts/windows/check-zluda-patches.ps1

@@ -0,0 +1,25 @@
+[CmdletBinding()]
+param([string]$SourceRoot)
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$SourceRoot) { $SourceRoot = Join-Path $repo 'external/ZLUDA' }
+$base = 'ee2f25a180099fa42f36b2346732e1f2470a03ad'
+$relative = 'build/zluda-patch-check-' + [Guid]::NewGuid().ToString('N')
+$snapshot = Join-Path $repo $relative
+New-Item -ItemType Directory -Force $snapshot | Out-Null
+$archive = "$snapshot.tar"
+& git -C $SourceRoot archive --format=tar "--output=$archive" $base
+if ($LASTEXITCODE) { throw 'Could not archive the pinned ZLUDA base.' }
+& tar.exe -xf $archive -C $snapshot
+if ($LASTEXITCODE) { throw 'Could not extract the ZLUDA patch-check snapshot.' }
+Push-Location $repo
+try {
+    foreach ($patch in (Get-ChildItem -LiteralPath (Join-Path $repo 'patches/zluda') -Filter '*.patch' | Sort-Object Name)) {
+        & git apply "--directory=$relative" --check $patch.FullName
+        if ($LASTEXITCODE) { throw "Fresh-source patch check failed: $($patch.Name)" }
+        & git apply "--directory=$relative" --whitespace=nowarn $patch.FullName
+        if ($LASTEXITCODE) { throw "Fresh-source patch apply failed: $($patch.Name)" }
+        Write-Host "PASS patch $($patch.Name)"
+    }
+    Write-Host "Pinned-source patch snapshot: $snapshot"
+} finally { Pop-Location }

scripts/windows/d4r-check.ps1

@@ -0,0 +1,271 @@
+# Checks a d4r install on Windows. It only reads files and prints what it finds.
+# Run it from the game folder (the one holding the game's .exe and d4r\), or give that folder:
+#   powershell -ExecutionPolicy Bypass -File d4r\d4r-check.ps1 [GAME_FOLDER]
+# Add -Report to also write one ZIP (logs, this output, GPU and driver) to send with a bug report.
+[CmdletBinding()]
+param(
+    [string]$GameFolder,
+    [switch]$Report,
+    [string]$InventoryFile,   # tests: a gpu-inventory.json to use instead of running the GPU query
+    [string]$ReportDirectory  # tests: where -Report writes its ZIP (default: your Desktop)
+)
+$ErrorActionPreference = 'Stop'
+if (!$GameFolder) {
+    $GameFolder = if ((Split-Path $PSScriptRoot -Leaf) -eq 'd4r') { Split-Path $PSScriptRoot -Parent } else { (Get-Location).Path }
+}
+$game = [IO.Path]::GetFullPath($GameFolder).TrimEnd('\')
+$d4r = Join-Path $game 'd4r'
+$problems = 0
+$lines = [Collections.Generic.List[string]]::new()
+function Say([string]$text) { $lines.Add($text); Write-Host $text }
+function Ok([string]$text) { Say ('  ok       ' + $text) }
+function Bad([string]$text) { Say ('  MISSING  ' + $text); $script:problems++ }
+function Note([string]$text) { Say ('  note     ' + $text) }
+function Hash([string]$path) { (Get-FileHash -LiteralPath $path -Algorithm SHA256).Hash }
+function Version([string]$path) {
+    try { $v = (Get-Item -LiteralPath $path).VersionInfo; if ($v.FileVersion) { return ($v.FileVersion -replace ',\s*', '.') } } catch {}
+    return 'unknown'
+}
+function Read-TextFile([string]$path) { [IO.File]::ReadAllText($path) }
+
+Say "d4r install in $game"
+if (!(Test-Path -LiteralPath $d4r -PathType Container)) {
+    Say 'no d4r folder here; run this from the folder with the game .exe (extract the d4r ZIP there first)'
+    exit 1
+}
+if (@(Get-ChildItem -LiteralPath $game -Filter '*.exe' -File -ErrorAction SilentlyContinue).Count) { Ok 'game executable next to d4r\' }
+else { Note 'no .exe next to d4r\ (the d4r files must sit in the folder of the game''s main .exe; for Unreal Engine games that is <game>\<Project>\Binaries\Win64)' }
+
+# --- the install's own file list ---------------------------------------------------------------
+$manifest = $null
+$manifestPath = Join-Path $d4r 'package.json'
+if (Test-Path -LiteralPath $manifestPath) {
+    try { $manifest = Get-Content -LiteralPath $manifestPath -Raw | ConvertFrom-Json } catch { $manifest = $null }
+}
+if (!$manifest) { Bad 'd4r\package.json is missing or damaged (extract the d4r ZIP again)' }
+
+# --- files --------------------------------------------------------------------------------------
+$required = @('dxgi.dll', 'OptiScaler.ini', 'd4r\_nvngx.dll', 'd4r\d4r.ini', 'd4r\dll-pins.txt',
+    'd4r\hip\bin\amdhip64_7.dll', 'd4r\zluda\nvcuda.dll', 'd4r\zluda\nvapi64.dll')
+foreach ($file in $required) {
+    if (Test-Path -LiteralPath (Join-Path $game $file) -PathType Leaf) { Ok $file }
+    else { Bad "$file (extract the d4r ZIP again over the game folder)" }
+}
+if ($manifest) {
+    $edited = @('OptiScaler.ini', 'd4r/d4r.ini')   # players are meant to edit these
+    $damaged = 0
+    foreach ($entry in $manifest.files) {
+        $path = Join-Path $game ($entry.path -replace '/', '\')
+        if (!(Test-Path -LiteralPath $path -PathType Leaf)) {
+            if ($required -notcontains ($entry.path -replace '/', '\')) { Bad "$($entry.path) (extract the d4r ZIP again)" }
+            continue
+        }
+        if ((Hash $path) -ne $entry.sha256) {
+            if ($entry.path -eq 'dxgi.dll') { Note 'dxgi.dll is not the one that came with d4r (another OptiScaler or ReShade?). Move it away and extract the d4r ZIP again' }
+            elseif ($edited -contains $entry.path) { Note "$($entry.path) has been edited (fine if you did it)" }
+            else { Bad "$($entry.path) differs from the release (damaged or replaced; extract the d4r ZIP again)"; $damaged++ }
+        }
+    }
+    if (!$damaged) { Ok 'every other d4r file matches the release' }
+}
+
+# --- OptiScaler.ini ---------------------------------------------------------------------------
+$optiIni = Join-Path $game 'OptiScaler.ini'
+if (Test-Path -LiteralPath $optiIni) {
+    $text = Read-TextFile $optiIni
+    if ($text -notmatch '(?im)^\s*AllowExternalBackend\s*=\s*true') { Bad 'OptiScaler.ini: [DLSS] AllowExternalBackend must be true (this is not the d4r OptiScaler.ini)' }
+    if ($text -notmatch '(?im)^\s*Dx12Upscaler\s*=\s*dlss') { Note 'OptiScaler.ini: [Upscalers] Dx12Upscaler is not dlss; the game will not use d4r' }
+    $m = [regex]::Match($text, '(?im)^\s*NvngxPath\s*=\s*(\S+)')
+    if (!$m.Success) { Bad 'OptiScaler.ini: [Libraries] NvngxPath is missing (it must name the d4r folder)' }
+    else {
+        $folder = $m.Groups[1].Value
+        $resolved = if ([IO.Path]::IsPathRooted($folder)) { $folder } else { Join-Path $game $folder }
+        if (Test-Path -LiteralPath (Join-Path $resolved '_nvngx.dll')) { Ok "OptiScaler.ini NvngxPath = $folder" }
+        else { Bad "OptiScaler.ini NvngxPath = $folder does not hold _nvngx.dll (use NvngxPath=d4r, or the full path of the d4r folder)" }
+    }
+}
+
+# --- NVIDIA DLLs (never shipped; the exact versions come from dll-pins.txt) -----------------------
+$pins = @()
+$pinsPath = Join-Path $d4r 'dll-pins.txt'
+if (Test-Path -LiteralPath $pinsPath) {
+    foreach ($line in Get-Content -LiteralPath $pinsPath) {
+        $line = $line.Trim()
+        if (!$line -or $line.StartsWith('#')) { continue }
+        $f = $line -split '\s+'
+        if ($f.Count -ge 4 -and $f[1].Length -eq 64) { $pins += [pscustomobject]@{ kind = $f[0]; sha = $f[1].ToUpperInvariant(); version = $f[2]; status = $f[3] } }
+    }
+}
+function Check-Nvidia([string]$kind, [string]$relative, [string]$label, [string]$source) {
+    $path = Join-Path $game $relative
+    $wanted = @($pins | Where-Object { $_.kind -eq $kind } | ForEach-Object { $_.version }) -join ' or '
+    if (!$wanted) { Note "$label cannot be checked (d4r\dll-pins.txt is missing or damaged)"; return }
+    if (!(Test-Path -LiteralPath $path -PathType Leaf)) { Bad "${relative}: copy NVIDIA's $label here (version $wanted; $source)"; return }
+    $hash = Hash $path
+    $pin = @($pins | Where-Object { $_.kind -eq $kind -and $_.sha -eq $hash }) | Select-Object -First 1
+    if (!$pin) { Bad "$relative is version $(Version $path), which d4r does not accept. d4r on Windows needs exactly $wanted ($source)"; return }
+    if ($pin.status -eq 'validated') { Ok "$relative ($label $($pin.version), tested on Windows)" }
+    else { Ok "$relative ($label $($pin.version))"; Note "$label $($pin.version) is accepted but has had less Windows testing" }
+}
+Check-Nvidia 'dlss' 'd4r\nvngx_dlss.dll' 'nvngx_dlss.dll' 'many games ship one in their folder; see WINDOWS_README.txt'
+Check-Nvidia 'ngx' 'd4r\ngx\_nvngx.dll' '_nvngx.dll' 'it is part of NVIDIA''s display driver package; see WINDOWS_README.txt'
+
+# --- GPU and the build for it --------------------------------------------------------------------
+$registryPath = Join-Path $d4r 'gpu-targets.json'
+$registry = @()
+if (Test-Path -LiteralPath $registryPath) { $registry = @((Get-Content -LiteralPath $registryPath -Raw | ConvertFrom-Json).targets) }
+$inventory = $null
+if ($InventoryFile) { $inventory = Get-Content -LiteralPath $InventoryFile -Raw | ConvertFrom-Json }
+elseif (Test-Path -LiteralPath (Join-Path $d4r 'd4r_gpu_inventory.exe')) {
+    $work = Join-Path ([IO.Path]::GetTempPath()) ('d4r-check-' + [Guid]::NewGuid().ToString('N'))
+    New-Item -ItemType Directory -Path $work | Out-Null
+    try {
+        $info = New-Object Diagnostics.ProcessStartInfo
+        $info.FileName = Join-Path $d4r 'd4r_gpu_inventory.exe'
+        $info.Arguments = '--hip-root "' + (Join-Path $d4r 'hip') + '" --output-dir "' + $work + '"'
+        $info.UseShellExecute = $false; $info.CreateNoWindow = $true
+        $info.RedirectStandardOutput = $true; $info.RedirectStandardError = $true
+        $info.EnvironmentVariables['D4R_DIAG_DIR'] = $work
+        $process = New-Object Diagnostics.Process; $process.StartInfo = $info
+        [void]$process.Start()
+        $null = $process.StandardOutput.ReadToEndAsync(); $null = $process.StandardError.ReadToEndAsync()
+        if (!$process.WaitForExit(30000)) { $process.Kill(); $process.WaitForExit() }
+        if (Test-Path -LiteralPath (Join-Path $work 'gpu-inventory.json')) { $inventory = Get-Content -LiteralPath (Join-Path $work 'gpu-inventory.json') -Raw | ConvertFrom-Json }
+    } catch {} finally {
+        $process.Dispose()
+        Get-ChildItem -LiteralPath $work -File -ErrorAction SilentlyContinue | ForEach-Object { Remove-Item -LiteralPath $_.FullName }
+        Remove-Item -LiteralPath $work -ErrorAction SilentlyContinue
+    }
+}
+$arch = $null
+if (!$inventory) { Note 'could not ask the AMD runtime about your GPU (d4r_gpu_inventory.exe is missing, or the AMD graphics driver is not installed or is too old)' }
+else {
+    $supported = @($registry | ForEach-Object { $_.architecture })
+    $devices = @($inventory.devices | Where-Object { $_.wavefrontSize -eq 32 -and ($supported -contains $_.architecture -or !$supported.Count) })
+    if (!$devices.Count) {
+        $seen = @($inventory.devices | ForEach-Object { "$($_.name) ($($_.architecture))" }) -join ', '
+        Bad ("no supported RDNA3/RDNA4 GPU found by the AMD runtime. It sees: " + $(if ($seen) { $seen } else { 'nothing' }) + '. Update the AMD Adrenalin driver; RDNA2 and older are not supported')
+    } else {
+        foreach ($device in $devices) {
+            $a = $device.architecture
+            $missing = @()
+            foreach ($rel in @("d4r\_nvngx_$a.dll", "d4r\pixel_convert_$a.hsaco", "d4r\nvapi\$a\nvapi64.dll", "d4r\native\$a\d4r-kernels.txt")) {
+                if (!(Test-Path -LiteralPath (Join-Path $game $rel))) { $missing += $rel }
+            }
+            $native = @(Get-ChildItem -LiteralPath (Join-Path $d4r "native\$a") -Filter '*.hsaco' -ErrorAction SilentlyContinue).Count
+            if ($missing.Count) { Bad "GPU $($device.name) ($a): this release has no complete build for it (missing: $($missing -join ', '))" }
+            else {
+                Ok "GPU $($device.name) ($a): build present, $native native kernels"
+                if (!$arch) { $arch = $a }
+            }
+            if ($a -ne 'gfx1201') { Note "only the RX 9070 XT (gfx1201) has been tested on real hardware; $a is compile-tested" }
+        }
+    }
+    if (@($inventory.devices | Where-Object { $_.wavefrontSize -eq 32 }).Count -gt 1) { Note 'several GPUs found; d4r uses the one the game renders on' }
+}
+if ($arch -and $registry.Count) {
+    $info = @($registry | Where-Object { $_.architecture -eq $arch }) | Select-Object -First 1
+    $bad = 0
+    $objects = @(Get-Item -LiteralPath (Join-Path $d4r "pixel_convert_$arch.hsaco") -ErrorAction SilentlyContinue) +
+        @(Get-ChildItem -LiteralPath (Join-Path $d4r "native\$arch") -Filter '*.hsaco' -ErrorAction SilentlyContinue)
+    foreach ($object in $objects) {
+        $stream = [IO.File]::OpenRead($object.FullName)
+        try { $header = New-Object byte[] 64; [void]$stream.Read($header, 0, 64) } finally { $stream.Dispose() }
+        if ($header[0] -ne 127 -or $header[1] -ne 69 -or $header[2] -ne 76 -or $header[3] -ne 70 -or $header[48] -ne $info.elfMachine) {
+            Bad "$($object.Name) is not built for $arch (do not rename or mix files from other GPUs; extract the d4r ZIP again)"; $bad++
+        }
+    }
+    if ($objects.Count -and !$bad) { Ok "all $($objects.Count) GPU code objects are built for $arch" }
+}
+
+# --- Linux / Wine leftovers ------------------------------------------------------------------------
+$proxyFound = $false
+foreach ($name in @('d3d12.dll', 'd3d12core.dll')) {
+    $proxy = Join-Path $game $name
+    if (Test-Path -LiteralPath $proxy -PathType Leaf) {
+        $item = Get-Item -LiteralPath $proxy
+        if ($item.Length -le 64MB -and [Text.Encoding]::ASCII.GetString([IO.File]::ReadAllBytes($proxy)) -match '(?i)vkd3d|wined3d') {
+            Bad "$name in the game folder is vkd3d-proton/Wine (left over from a Linux install?). Move it out; d4r on Windows uses native D3D12"
+            $proxyFound = $true
+        }
+    }
+}
+if (!$proxyFound) { Ok 'no vkd3d/Wine d3d12.dll in the game folder' }
+
+# --- d4r.ini ---------------------------------------------------------------------------------------
+$iniPath = Join-Path $d4r 'd4r.ini'
+$model = 'K'
+if (Test-Path -LiteralPath $iniPath) {
+    $section = ''; $iniProblems = 0
+    $known = @{ 'dlss.model' = 1; 'dlss.showwatermark' = 1; 'interop.asyncinterop' = 1; 'debug.validateoutput' = 1; 'debug.log' = 1; 'paths.cachedir' = 1 }
+    $boolean = @('dlss.showwatermark', 'interop.asyncinterop', 'debug.validateoutput')
+    foreach ($raw in (Read-TextFile $iniPath).TrimStart([char]0xFEFF) -split "`n") {
+        $line = $raw.Trim()
+        if (!$line -or $line.StartsWith(';') -or $line.StartsWith('#')) { continue }
+        if ($line.StartsWith('[')) { $section = $line.Trim('[', ']').Trim(); continue }
+        $eq = $line.IndexOf('='); if ($eq -lt 0) { continue }
+        $key = $line.Substring(0, $eq).Trim()
+        $value = ($line.Substring($eq + 1) -replace '\s[;#].*$', '').Trim()
+        $name = ("$section.$key").ToLowerInvariant()
+        $v = $value.ToLowerInvariant()
+        if (!$known.ContainsKey($name)) { Note "d4r.ini: [$section] $key is not a Windows setting; ignored"; $iniProblems++ }
+        elseif ($name -eq 'dlss.model') {
+            if (@('', 'auto', 'k', 'dlss4', '11') -contains $v) { $model = 'K' }
+            elseif (@('m', 'dlss4.5', '13') -contains $v) { $model = 'M' }
+            else { Note "d4r.ini: [DLSS] Model '$value' is not available on Windows (use K or M); K will be used"; $iniProblems++ }
+        }
+        elseif ($boolean -contains $name) {
+            if (@('', 'auto', '1', 'true', 'yes', 'on', '0', 'false', 'no', 'off') -notcontains $v) { Note "d4r.ini: [$section] $key must be true or false, not '$value'; the default will be used"; $iniProblems++ }
+        }
+        elseif ($name -eq 'debug.log' -and @('', 'auto', 'normal', 'verbose') -notcontains $v) { Note "d4r.ini: [Debug] Log must be normal or verbose, not '$value'; normal will be used"; $iniProblems++ }
+    }
+    if (!$iniProblems) { Ok "d4r.ini is valid (model $model)" }
+}
+
+# --- what the last game start said -----------------------------------------------------------------
+$log = Join-Path $d4r 'd4r_nvngx.log'
+if (Test-Path -LiteralPath $log) {
+    $messages = @(Get-Content -LiteralPath $log | Where-Object { $_ -match '^d4r: ' })
+    $failed = @($messages | Where-Object { $_ -match 'DLSS disabled' })
+    if ($failed.Count) { foreach ($m in $failed | Select-Object -First 3) { Bad ('last game start: ' + $m.Substring(5)) } }
+    elseif ($messages.Count) { Ok ('last game start: ' + $messages[0].Substring(5)) }
+    else { Note 'd4r\d4r_nvngx.log has no d4r summary line yet (the game may not have chosen DLSS)' }
+    foreach ($m in $messages | Where-Object { $_ -notmatch 'DLSS disabled|player mode' } | Select-Object -First 5) { Note ('last game start: ' + $m.Substring(5)) }
+} else { Note 'no d4r\d4r_nvngx.log yet: start the game once and choose DLSS (or FSR/XeSS) in its graphics settings' }
+if (Get-Process -ErrorAction SilentlyContinue | Where-Object { $_.Path -and $_.Path.StartsWith($game + '\', [StringComparison]::OrdinalIgnoreCase) -and $_.ProcessName -notmatch '^(powershell|pwsh)$' }) {
+    Note 'the game is running; its log is rewritten at every start'
+}
+
+Say ''
+if ($problems -eq 0) { Say 'Everything d4r needs is in place.' } else { Say "$problems thing(s) to fix above." }
+
+# --- bug-report ZIP ------------------------------------------------------------------------------
+if ($Report) {
+    $stamp = Get-Date -Format 'yyyyMMdd-HHmmss'
+    $destination = if ($ReportDirectory) { $ReportDirectory } else { [Environment]::GetFolderPath('Desktop') }
+    $staging = Join-Path ([IO.Path]::GetTempPath()) ("d4r-report-$stamp")
+    New-Item -ItemType Directory -Force -Path $staging | Out-Null
+    try {
+        $lines | Set-Content -LiteralPath (Join-Path $staging 'check.txt') -Encoding UTF8
+        foreach ($file in @('d4r\d4r_nvngx.log', 'd4r\d4r.ini', 'OptiScaler.ini', 'OptiScaler.log')) {
+            $source = Join-Path $game $file
+            if (Test-Path -LiteralPath $source) { Copy-Item -LiteralPath $source -Destination (Join-Path $staging (Split-Path $file -Leaf)) }
+        }
+        Get-ChildItem -LiteralPath $game -Filter 'OptiScaler*.log' -File | ForEach-Object { Copy-Item -LiteralPath $_.FullName -Destination $staging -Force }
+        try { Get-CimInstance Win32_VideoController | Select-Object Name, DriverVersion, DriverDate | ConvertTo-Json | Set-Content -LiteralPath (Join-Path $staging 'driver.json') -Encoding UTF8 } catch {}
+        if ($inventory) { $inventory | ConvertTo-Json -Depth 6 | Set-Content -LiteralPath (Join-Path $staging 'gpu-inventory.json') -Encoding UTF8 }
+        Get-ChildItem -LiteralPath $game -Recurse -File -ErrorAction SilentlyContinue |
+            Where-Object { $_.FullName.StartsWith($d4r + '\') -or $_.Name -in @('dxgi.dll', 'OptiScaler.ini') } |
+            ForEach-Object { '{0}  {1,12}  {2}' -f (Hash $_.FullName), $_.Length, $_.FullName.Substring($game.Length + 1) } |
+            Set-Content -LiteralPath (Join-Path $staging 'files.sha256.txt') -Encoding UTF8
+        $zip = Join-Path $destination "d4r-report-$stamp.zip"
+        Compress-Archive -Path (Join-Path $staging '*') -DestinationPath $zip -Force
+        Write-Host ''
+        Write-Host "Bug report written: $zip" -ForegroundColor Cyan
+        Write-Host 'Also tell us: GPU, game, K or M, and what the image looked like. The logs can contain local folder names; look before posting publicly.'
+    } finally {
+        Get-ChildItem -LiteralPath $staging -File -ErrorAction SilentlyContinue | ForEach-Object { Remove-Item -LiteralPath $_.FullName }
+        Remove-Item -LiteralPath $staging -ErrorAction SilentlyContinue
+    }
+}
+if ($problems) { exit 1 }

scripts/windows/game-summary.ps1

@@ -0,0 +1,32 @@
+# Parse completed diagnostic records. Empty streams are valid, including games
+# that refuse a debugger before initializing the upscaler.
+function Get-D4RGameSummary {
+    param([AllowEmptyString()][string]$Stdout='', [AllowEmptyString()][string]$Stderr='',
+        [AllowEmptyString()][string]$Debugger='', [int]$Preset=11, [double]$RunSeconds=0,
+        [bool]$ValidateOutput=$false, $GameCrash=$null)
+    $gameExit=[regex]::Match($Debugger, 'EXIT code=0x([0-9a-f]+)')
+    $exitCode=if ($gameExit.Success) { '0x'+$gameExit.Groups[1].Value } else { 'diagnostic_timeout' }
+    $frames=[regex]::Matches($Stdout, '(?m)^D4R_FRAME cpu_frame_copies=([0-9]+) frame_age=([0-9]+) interop_ngx_ms=([0-9.]+)\r?$')
+    $checks=[regex]::Matches($Stdout, '(?m)^D4R_OUTPUT_VALIDATION elements=([0-9]+) nan=([0-9]+) inf=([0-9]+) diagnostics_cpu_bytes=8\r?$')
+    $launches=[regex]::Matches($Stderr, '\[d4r-launch\] kernel="([^"]+)" backend=(native|translated)')
+    $kernels=@($launches | ForEach-Object { $_.Groups[1].Value+' '+$_.Groups[2].Value } | Group-Object | ForEach-Object {
+        $parts=$_.Name.Split(' '); @{kernel=$parts[0]; backend=$parts[1]; launches=$_.Count}
+    })
+    $capabilities=@([regex]::Matches($Stdout, '(?m)^D4R_CAPABILITIES available=(-?[0-9]+) feature_init=(0x[0-9a-f]+) needs_driver=(-?[0-9]+)\r?$') |
+        ForEach-Object { $_.Groups[2].Value } | Select-Object -Unique)
+    $session=if ($frames.Count) { 'completed-dlss-frames' }
+        elseif ($capabilities -contains '0xbad00004') { 'ngx-feature-not-found' }
+        elseif ($capabilities.Count -and $capabilities -ne '0x00000001') { 'ngx-capability-failure' }
+        elseif ($exitCode -eq '0x0') { 'process-exited-without-dlss-frames' }
+        elseif ($exitCode -eq 'diagnostic_timeout') { 'diagnostic-timeout-without-dlss-frames' }
+        else { 'process-failed-before-dlss-frames' }
+    return [ordered]@{exitCode=$exitCode; session=$session; featureInitResults=$capabilities;
+        runSeconds=$RunSeconds; preset=$Preset; gameCrash=$GameCrash;
+        nativeLaunches=([regex]::Matches($Stderr, '\[d4r-launch\].*backend=native')).Count;
+        completedFrames=$frames.Count; outputValidationRequested=$ValidateOutput;
+        outputGpuChecks=$checks.Count; kernels=$kernels;
+        nonfiniteOutputs=@($checks | Where-Object { $_.Groups[2].Value -ne '0' -or $_.Groups[3].Value -ne '0' }).Count;
+        previousFrameOutputs=@($frames | Where-Object { $_.Groups[2].Value -ne '0' }).Count;
+        cpuImageCopyFrames=@($frames | Where-Object { $_.Groups[1].Value -ne '0' }).Count;
+        failures=([regex]::Matches($Stderr, 'D4R_[A-Z0-9_]*FAILURE\b')).Count}
+}

scripts/windows/gpu-preflight.ps1

@@ -0,0 +1,58 @@
+# Read-only inventory before touching game files. It allocates no GPU memory
+# and executes no kernels; successful discovery is not hardware validation.
+function Invoke-D4RGpuPreflight([string]$PackageRoot, [string]$GameDirectory, [string]$Target, [string]$OutputDirectory) {
+    New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+    $result=[ordered]@{passed=$false; target=$Target; gpuWorkExecuted=$false; failure=$null}
+    try {
+        $proxy=Join-Path $GameDirectory 'd3d12.dll'
+        if (Test-Path -LiteralPath $proxy) {
+            $item=Get-Item -LiteralPath $proxy
+            $result.localD3D12=@{path=$proxy; sha256=(Get-FileHash -LiteralPath $proxy).Hash; product=$item.VersionInfo.ProductName}
+            # Identify known Vulkan/Wine proxies by their own strings. Do not
+            # load, remove or replace a third-party game DLL.
+            if ($item.Length -le 64MB -and [Text.Encoding]::ASCII.GetString([IO.File]::ReadAllBytes($proxy)) -match '(?i)vkd3d|wined3d') {
+                throw 'Local d3d12.dll identifies as vkd3d/Wine. Restore the game native D3D12 installation before using this Windows backend.'
+            }
+        }
+        $info=[Diagnostics.ProcessStartInfo]::new()
+        $info.FileName=Join-Path $PackageRoot 'd4r/d4r_gpu_inventory.exe'
+        $hip=Join-Path $PackageRoot 'd4r/hip'
+        foreach ($value in @($hip,$OutputDirectory)) { if ($value.Contains('"')) { throw 'Unsupported quote in inventory path.' } }
+        $info.Arguments='--hip-root "' + $hip + '" --output-dir "' + $OutputDirectory + '"'
+        $info.UseShellExecute=$false; $info.CreateNoWindow=$true
+        $info.EnvironmentVariables['D4R_DIAG_DIR']=$OutputDirectory
+        $info.RedirectStandardOutput=$true; $info.RedirectStandardError=$true
+        $process=[Diagnostics.Process]::new(); $process.StartInfo=$info
+        try {
+            if (!$process.Start()) { throw 'Cannot start GPU inventory.' }
+            $stdout=$process.StandardOutput.ReadToEndAsync(); $stderr=$process.StandardError.ReadToEndAsync()
+            $timedOut=!$process.WaitForExit(30000)
+            if ($timedOut) { $process.Kill(); $process.WaitForExit() }
+            $stdout.GetAwaiter().GetResult() | Set-Content (Join-Path $OutputDirectory 'gpu-inventory.stdout.log') -Encoding UTF8
+            $stderr.GetAwaiter().GetResult() | Set-Content (Join-Path $OutputDirectory 'gpu-inventory.stderr.log') -Encoding UTF8
+            $result.exitCode=$process.ExitCode
+            $result.exceptionOrExitHex='0x{0:X8}' -f [BitConverter]::ToUInt32([BitConverter]::GetBytes([int]$process.ExitCode),0)
+            if ($timedOut) { $result.timedOut=$true; throw 'HIP inventory timed out after 30 seconds.' }
+            if ($process.ExitCode) { throw "HIP inventory failed (exit $($process.ExitCode))." }
+        } finally { $process.Dispose() }
+        $inventory=Get-Content (Join-Path $OutputDirectory 'gpu-inventory.json') -Raw | ConvertFrom-Json
+        $result.inventory=$inventory
+        if ($inventory.compiledTarget -ne $Target) { throw "Inventory executable targets $($inventory.compiledTarget); package requires $Target." }
+        $matching=@($inventory.devices | Where-Object { $_.architecture -eq $Target -and $_.wavefrontSize -eq 32 })
+        if (!$matching.Count) {
+            $actual=@($inventory.devices | ForEach-Object { "$($_.architecture) ($($_.name))" }) -join ', '
+            throw "GPU target mismatch: detected $actual; package requires $Target. Use the package for the actual HIP architecture; do not rename code objects."
+        }
+        $result.passed=$true
+        Write-Host "D4R_PREFLIGHT target=$Target devices=$($matching.Count) gpu_work_executed=0"
+    } catch {
+        $result.failure=$_.Exception.Message
+        $result | ConvertTo-Json -Depth 8 | Set-Content (Join-Path $OutputDirectory 'preflight.json') -Encoding UTF8
+        try { Get-CimInstance Win32_VideoController | Select-Object Name,DriverVersion,DriverDate | ConvertTo-Json |
+            Set-Content (Join-Path $OutputDirectory 'driver.json') -Encoding UTF8 } catch {}
+        $bundle=$OutputDirectory+'.zip'
+        Compress-Archive -Path (Join-Path $OutputDirectory '*') -DestinationPath $bundle -Force
+        throw "$($result.failure) Diagnostic bundle: $bundle"
+    }
+    $result | ConvertTo-Json -Depth 8 | Set-Content (Join-Path $OutputDirectory 'preflight.json') -Encoding UTF8
+}

scripts/windows/gpu-target.ps1

@@ -0,0 +1,38 @@
+# Shared by the build, diagnostics, staging and game package scripts.
+function Get-D4RGpuTargets {
+    $registry=Join-Path $PSScriptRoot 'gpu-targets.json'
+    if (!(Test-Path -LiteralPath $registry)) { $registry=Join-Path $PSScriptRoot '../../tools/windows/gpu-targets.json' }
+    $data=Get-Content -LiteralPath $registry -Raw | ConvertFrom-Json
+    if ($data.schema -ne 1) { throw 'Unsupported GPU target registry schema.' }
+    return $data.targets
+}
+function Get-D4RGpuTargetInfo([string]$Target) {
+    $info=@(Get-D4RGpuTargets | Where-Object { $_.architecture -eq $Target })
+    if ($info.Count -ne 1) { throw "Unsupported GPU target: $Target" }
+    return $info[0]
+}
+function Get-D4RGpuTarget([string]$Root, [string]$Requested) {
+    $configured=$null
+    $targetFile=Join-Path $Root 'gpu-target.json'
+    if (Test-Path -LiteralPath $targetFile) {
+        $configured=(Get-Content -LiteralPath $targetFile -Raw | ConvertFrom-Json).architecture
+        [void](Get-D4RGpuTargetInfo $configured)
+    }
+    $target=if ($Requested) { $Requested } elseif ($configured) { $configured } else { 'gfx1201' }
+    [void](Get-D4RGpuTargetInfo $target)
+    if (!$configured -and $target -ne 'gfx1201') { throw "A $target build requires gpu-target.json; rebuild with -GpuArch $target." }
+    if ($configured -and $target -ne $configured) { throw "Requested $target differs from package target $configured" }
+    return $target
+}
+function Assert-D4RCodeObjectTarget([string]$Path, [string]$Target) {
+    $info=Get-D4RGpuTargetInfo $Target
+    $reader=[IO.BinaryReader]::new([IO.File]::OpenRead($Path))
+    try { $header=$reader.ReadBytes(64) } finally { $reader.Dispose() }
+    if ($header.Length -ne 64 -or $header[0] -ne 127 -or $header[1] -ne 69 -or $header[2] -ne 76 -or $header[3] -ne 70 -or
+        $header[4] -ne 2 -or $header[5] -ne 1 -or $header[18] -ne 224 -or $header[19] -ne 0) {
+        throw "Invalid AMDGPU ELF64 code object: $Path"
+    }
+    # LLVM AMDGPU e_flags machine IDs; inspect, never patch or spoof them.
+    $expected=$info.elfMachine
+    if ($header[48] -ne $expected) { throw "Code object does not target ${Target}: $Path (ELF machine=$($header[48]))" }
+}

scripts/windows/package-windows-game.ps1

@@ -0,0 +1,137 @@
+[CmdletBinding()]
+param(
+    [string]$PackageRoot, [string]$DiagnosticRoot, [string]$OptiScalerRoot,
+    [string]$ZludaRoot, [string]$HipRoot, [string]$KernelKRoot, [string]$KernelMRoot,
+    [string]$GpuArch,
+    [string]$ArchivePath
+)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+$defaults = @{PackageRoot='dist/windows-rdna4-game'; DiagnosticRoot='dist/windows-rdna4-command-list';
+    OptiScalerRoot='dist/optiscaler-windows-d4r'; ZludaRoot='dist/zluda-windows-final';
+    HipRoot='.tools/therock-10.2.0a20260929/_rocm_sdk_core'}
+foreach ($name in $defaults.Keys) {
+    if (!(Get-Variable -Name $name -ValueOnly)) { Set-Variable -Name $name -Value (Join-Path $repo $defaults[$name]) }
+}
+$GpuArch=Get-D4RGpuTarget $DiagnosticRoot $GpuArch
+if ($GpuArch -ne 'gfx1201' -and !$PSBoundParameters.ContainsKey('PackageRoot')) { $PackageRoot += "-$GpuArch" }
+if (!$KernelKRoot) { $KernelKRoot=Join-Path $repo "build/native-k-$GpuArch" }
+if (!$KernelMRoot) { $KernelMRoot=Join-Path $repo "build/native-m-$GpuArch" }
+foreach ($directory in @($KernelKRoot,$KernelMRoot)) {
+    $info=Join-Path $directory 'build-info.json'
+    if ((Test-Path -LiteralPath $info) -and (Get-Content -LiteralPath $info -Raw | ConvertFrom-Json).architecture -ne $GpuArch) {
+        throw "Native kernel directory does not target ${GpuArch}: $directory"
+    }
+}
+$PackageRoot = [IO.Path]::GetFullPath($PackageRoot)
+if (Test-Path -LiteralPath (Join-Path $PackageRoot 'gpu-target.json')) {
+    [void](Get-D4RGpuTarget $PackageRoot $GpuArch)
+}
+$sourceCommit=(& git -C $repo rev-parse HEAD).Trim()
+$sourceDirty=[bool](& git -C $repo status --porcelain)
+if ($ArchivePath -and $sourceDirty) { throw 'Commit source changes before creating the distributable archive.' }
+New-Item -ItemType Directory -Force $PackageRoot | Out-Null
+$stagedFiles = [Collections.Generic.List[string]]::new()
+function Stage([string]$source, [string]$relative) {
+    if (!(Test-Path -LiteralPath $source -PathType Leaf)) { throw "Required file missing: $source" }
+    if ($source.EndsWith('.hsaco')) { Assert-D4RCodeObjectTarget $source $GpuArch }
+    $destination = Join-Path $PackageRoot $relative
+    New-Item -ItemType Directory -Force (Split-Path $destination) | Out-Null
+    Copy-Item -LiteralPath $source -Destination $destination -Force
+    $stagedFiles.Add($relative)
+}
+Stage (Join-Path $OptiScalerRoot 'OptiScaler.dll') 'OptiScaler.dll'
+Stage (Join-Path $DiagnosticRoot 'bin/d4r_nvngx.dll') 'd4r/_nvngx.dll'
+Stage (Join-Path $DiagnosticRoot "bin/pixel_convert_${GpuArch}.hsaco") "d4r/pixel_convert_${GpuArch}.hsaco"
+Stage (Join-Path $DiagnosticRoot 'nvapi-compat/nvapi64.dll') 'd4r/nvapi/nvapi64.dll'
+Stage (Join-Path $DiagnosticRoot 'bin/d4r_debug_launcher.exe') 'd4r/d4r_debug_launcher.exe'
+Stage (Join-Path $DiagnosticRoot 'bin/d4r_gpu_inventory.exe') 'd4r/d4r_gpu_inventory.exe'
+foreach ($file in @('nvcuda.dll','nvapi64.dll','libc++.dll','libunwind.dll')) { Stage (Join-Path $ZludaRoot $file) "d4r/zluda/$file" }
+foreach ($file in @('amdhip64_7.dll','amd_comgr.dll','hiprtc0717.dll','hiprtc-builtins0717.dll','rocm_kpack.dll','AMD.ROCM.Comgr.MANIFEST','.hipVersion')) {
+    Stage (Join-Path $HipRoot "bin/$file") "d4r/hip/bin/$file"
+}
+$entries = @{}
+foreach ($directory in @($KernelKRoot, $KernelMRoot)) {
+    foreach ($line in Get-Content -LiteralPath (Join-Path $directory 'd4r-kernels.txt')) {
+        if (!$line.Trim() -or $line.StartsWith('#')) { continue }
+        if ($line -notmatch '^([A-Za-z0-9_]+) ([0-9a-f]{16})$') { throw "Invalid native manifest entry: $line" }
+        if ($entries.ContainsKey($Matches[1])) { throw "Duplicate native kernel: $($Matches[1])" }
+        $entries[$Matches[1]] = $line
+        Stage (Join-Path $directory ($Matches[1] + '.hsaco')) ('d4r/native/' + $Matches[1] + '.hsaco')
+    }
+}
+if ($entries.Count -ne 16) { throw "Expected 11 K and 5 M native objects; found $($entries.Count)" }
+@("# Audited DLSS 310.9.1: K + M $GpuArch native kernels", '# Generated by package-windows-game.ps1') + @($entries.Values | Sort-Object) |
+    Set-Content -LiteralPath (Join-Path $PackageRoot 'd4r/native/d4r-kernels.txt') -Encoding ASCII
+$stagedFiles.Add('d4r/native/d4r-kernels.txt')
+Stage (Join-Path $repo 'scripts/windows/windows-game.ps1') 'windows-game.ps1'
+Stage (Join-Path $repo 'scripts/windows/game-summary.ps1') 'game-summary.ps1'
+Stage (Join-Path $repo 'scripts/windows/gpu-target.ps1') 'gpu-target.ps1'
+Stage (Join-Path $repo 'scripts/windows/gpu-preflight.ps1') 'gpu-preflight.ps1'
+Stage (Join-Path $repo 'tools/windows/gpu-targets.json') 'gpu-targets.json'
+if (Test-Path -LiteralPath (Join-Path $DiagnosticRoot 'gpu-target.json')) {
+    Stage (Join-Path $DiagnosticRoot 'gpu-target.json') 'gpu-target.json'
+} else {
+    # Builds predating target metadata were gfx1201 only. The resolver rejects
+    # any attempt to label such a build gfx1200.
+    @{schema=1; architecture=$GpuArch; wavefrontSize=32; validation='Legacy gfx1201 build; run the GPU diagnostics.'} |
+        ConvertTo-Json | Set-Content -LiteralPath (Join-Path $PackageRoot 'gpu-target.json') -Encoding UTF8
+    $stagedFiles.Add('gpu-target.json')
+}
+Stage (Join-Path $repo 'scripts/windows/capture-game-window.ps1') 'capture-game-window.ps1'
+Stage (Join-Path $repo 'scripts/windows/send-game-key.ps1') 'send-game-key.ps1'
+Stage (Join-Path $repo 'docs/windows-game.md') 'README.md'
+Stage (Join-Path $repo 'docs/windows-performance.md') 'windows-performance.md'
+Stage (Join-Path $repo 'docs/windows-gpu-support.md') 'windows-gpu-support.md'
+Stage (Join-Path $repo 'docs/windows-rdna4-port.md') 'windows-rdna4-port.md'
+Stage (Join-Path $repo 'LICENSE') 'licenses/d4r.txt'
+Stage (Join-Path $OptiScalerRoot 'GPL-3.0.txt') 'licenses/OptiScaler.txt'
+Stage (Join-Path $repo 'external/ZLUDA/LICENSE-MIT') 'licenses/ZLUDA-MIT.txt'
+Stage (Join-Path $repo 'external/ZLUDA/LICENSE-APACHE') 'licenses/ZLUDA-APACHE.txt'
+Stage (Join-Path $repo 'external/ZLUDA/ext/llvm-project/LICENSE.TXT') 'licenses/LLVM.txt'
+Stage (Join-Path $repo 'external/MinHook/LICENSE.txt') 'licenses/MinHook.txt'
+Stage (Join-Path $HipRoot 'share/doc/amd_comgr/LICENSE.txt') 'licenses/amd_comgr.txt'
+Stage (Join-Path $repo 'external/clr/LICENSE.md') 'licenses/HIP-CLR.txt'
+foreach ($patch in Get-ChildItem -LiteralPath (Join-Path $repo 'patches/optiscaler') -Filter '*.patch') { Stage $patch.FullName ('source-patches/optiscaler/' + $patch.Name) }
+foreach ($patch in Get-ChildItem -LiteralPath (Join-Path $repo 'patches/zluda') -Filter '*.patch') { Stage $patch.FullName ('source-patches/zluda/' + $patch.Name) }
+foreach ($patch in Get-ChildItem -LiteralPath (Join-Path $repo 'patches/zluda-llvm') -Filter '*.patch') { Stage $patch.FullName ('source-patches/zluda-llvm/' + $patch.Name) }
+$sourceArchive=Join-Path $repo 'build/d4r-windows-rdna4-source.zip'
+New-Item -ItemType Directory -Force (Split-Path $sourceArchive) | Out-Null
+& git -C $repo archive --format=zip --output $sourceArchive $sourceCommit
+if ($LASTEXITCODE) { throw 'Cannot archive the committed d4r source.' }
+Stage $sourceArchive 'source/d4r-windows-rdna4-source.zip'
+$metadata = [ordered]@{
+    architecture=$GpuArch; hardwareValidation=$(if ($GpuArch -eq 'gfx1201') { 'RX9070XT tested; other SKUs unverified' } else { 'compile-only; hardware unverified' }); nativeKernels=16; dlssSha256='3975567b8943c53acce397f2b72380092f84f162d00b0d2c7d08a1025c563983';
+    d4rCommit=$sourceCommit;
+    d4rWorkingTreeDirty=$sourceDirty;
+    optiScaler=(Get-Content -LiteralPath (Join-Path $OptiScalerRoot 'build-info.json') -Raw | ConvertFrom-Json);
+    zludaBuild=(Get-Content -LiteralPath (Join-Path $ZludaRoot 'build-info.json') -Raw | ConvertFrom-Json);
+    hipRuntime='TheRock 10.2.0a20260929 / HIP 7.17.26386';
+    files=@($stagedFiles | ForEach-Object { Get-Item -LiteralPath (Join-Path $PackageRoot $_) } | ForEach-Object {
+        @{path=$_.FullName.Substring($PackageRoot.Length+1); sha256=(Get-FileHash -LiteralPath $_.FullName -Algorithm SHA256).Hash; version=$_.VersionInfo.FileVersion}
+    })
+}
+$metadata | ConvertTo-Json -Depth 10 | Set-Content -LiteralPath (Join-Path $PackageRoot 'package.json') -Encoding UTF8
+if (Get-ChildItem -LiteralPath $PackageRoot -Recurse -File | Where-Object { $_.Name -eq 'nvngx_dlss.dll' -or ($_.Name -eq '_nvngx.dll' -and $_.DirectoryName -ne (Join-Path $PackageRoot 'd4r')) }) {
+    throw 'Proprietary NVIDIA binaries must not be in the package.'
+}
+Write-Host "Windows game development package: $PackageRoot (NVIDIA DLLs excluded)"
+if ($ArchivePath) {
+    $ArchivePath=[IO.Path]::GetFullPath($ArchivePath)
+    if ($ArchivePath.StartsWith($PackageRoot+'\',[StringComparison]::OrdinalIgnoreCase)) { throw 'Place the ZIP outside the package directory.' }
+    Add-Type -AssemblyName System.IO.Compression,System.IO.Compression.FileSystem
+    New-Item -ItemType Directory -Force (Split-Path $ArchivePath) | Out-Null
+    $stream=[IO.File]::Open($ArchivePath,[IO.FileMode]::Create,[IO.FileAccess]::ReadWrite,[IO.FileShare]::None)
+    $archive=$null
+    try {
+        $archive=[IO.Compression.ZipArchive]::new($stream,[IO.Compression.ZipArchiveMode]::Create)
+        # Never archive caches, results, private texture outputs or a local DLL
+        # merely because it happens to be somewhere under PackageRoot.
+        foreach ($relative in @($stagedFiles)+@('package.json')) {
+            [void][IO.Compression.ZipFileExtensions]::CreateEntryFromFile($archive,
+                (Join-Path $PackageRoot $relative),$relative.Replace('\','/'),[IO.Compression.CompressionLevel]::Optimal)
+        }
+    } finally { if ($archive) { $archive.Dispose() }; $stream.Dispose() }
+    Write-Host "Public package archive: $ArchivePath"
+}

scripts/windows/package-windows-quick-test.ps1

@@ -0,0 +1,109 @@
+[CmdletBinding()]
+param(
+    [string]$GamePackagePrefix, [Parameter(Mandatory=$true)][string]$PackageRoot,
+    [string]$ArchivePath,
+    [string]$NvidiaDirectory, [string]$NvidiaLicensePath
+)
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$GamePackagePrefix) { $GamePackagePrefix=Join-Path $repo 'dist/windows-gpu-coverage-game' }
+$PackageRoot=[IO.Path]::GetFullPath($PackageRoot)
+if (Test-Path -LiteralPath $PackageRoot) { throw 'Use a new output directory to avoid mixing releases.' }
+$commit=(& git -C $repo rev-parse HEAD).Trim()
+if ($ArchivePath -and [bool](& git -C $repo status --porcelain)) { throw 'Commit source changes before creating a public ZIP.' }
+New-Item -ItemType Directory -Force $PackageRoot | Out-Null
+$files=[Collections.Generic.List[object]]::new()
+function Stage([string]$Source,[string]$Relative) {
+    $destination=Join-Path $PackageRoot $Relative
+    New-Item -ItemType Directory -Force (Split-Path $destination) | Out-Null
+    Copy-Item -LiteralPath $Source -Destination $destination
+    $item=Get-Item -LiteralPath $destination
+    $entry=@{path=$Relative.Replace('\','/'); sha256=(Get-FileHash -LiteralPath $destination -Algorithm SHA256).Hash; version=$item.VersionInfo.FileVersion}
+    $files.Add($entry)
+    return $entry
+}
+$targets=[ordered]@{}; $common=@(); $baseline=$null
+foreach ($gpu in Get-D4RGpuTargets) {
+    $arch=$gpu.architecture; $source="$GamePackagePrefix-$arch"
+    $metadata=Get-Content -LiteralPath (Join-Path $source 'package.json') -Raw | ConvertFrom-Json
+    if ($metadata.architecture -ne $arch -or $metadata.d4rWorkingTreeDirty) { throw "Uncommitted or wrong-target input: $source" }
+    $targetFiles=@()
+    foreach ($file in $metadata.files) {
+        $relative=$file.path.Replace('\','/')
+        if ((Get-FileHash -LiteralPath (Join-Path $source $file.path) -Algorithm SHA256).Hash -ne $file.sha256) { throw "Input file changed: $source/$relative" }
+        if ($relative.EndsWith('.hsaco')) { Assert-D4RCodeObjectTarget (Join-Path $source $file.path) $arch }
+        if ($relative -eq 'gpu-target.json' -or $relative -eq 'd4r/_nvngx.dll' -or $relative -eq 'd4r/d4r_gpu_inventory.exe' -or $relative -eq 'd4r/d4r_debug_launcher.exe' -or $relative -eq 'd4r/nvapi/nvapi64.dll' -or
+            $relative.StartsWith('d4r/native/') -or $relative -like 'd4r/pixel_convert_*.hsaco') {
+            $entry=Stage (Join-Path $source $file.path) "files/targets/$arch/$relative"
+            $targetFiles+=@{path=$relative; sha256=$entry.sha256; version=$entry.version}
+        } elseif ($relative -eq 'OptiScaler.dll' -or $relative.StartsWith('d4r/') -or $relative.StartsWith('licenses/')) {
+            $publicPath=if ($relative.StartsWith('licenses/')) { $relative } else { "files/common/$relative" }
+            if (!$baseline) {
+                $entry=Stage (Join-Path $source $file.path) $publicPath
+                if (!$relative.StartsWith('licenses/')) { $common+=@{path=$relative; sha256=$entry.sha256; version=$entry.version} }
+            } elseif ((Get-FileHash -LiteralPath (Join-Path $PackageRoot $publicPath) -Algorithm SHA256).Hash -ne $file.sha256) {
+                throw "Shared runtime differs in $arch : $relative"
+            }
+        }
+    }
+    if (@($targetFiles | Where-Object { $_.path.EndsWith('.hsaco') }).Count -ne 17) { throw "Expected 17 code objects for $arch" }
+    $targets[$arch]=@{binarySourceCommit=$metadata.d4rCommit; hardwareValidation=$metadata.hardwareValidation; dlssSha256=$metadata.dlssSha256; files=$targetFiles}
+    if (!$baseline) { $baseline=$metadata }
+    if ($metadata.dlssSha256 -ne $baseline.dlssSha256 -or $metadata.zludaBuild.sourceCommit -ne $baseline.zludaBuild.sourceCommit) { throw 'Input packages do not use the same validated dependencies.' }
+}
+foreach ($name in @('windows-game.ps1','game-summary.ps1','gpu-target.ps1','gpu-preflight.ps1')) {
+    $entry=Stage (Join-Path $PSScriptRoot $name) "files/common/$name"
+    $common+=@{path=$name; sha256=$entry.sha256; version=$entry.version}
+}
+$entry=Stage (Join-Path $repo 'tools/windows/gpu-targets.json') 'files/common/gpu-targets.json'
+$common+=@{path='gpu-targets.json'; sha256=$entry.sha256; version=$entry.version}
+[void](Stage (Join-Path $PSScriptRoot 'quick-test.ps1') 'files/quick-test.ps1')
+[void](Stage (Join-Path $repo 'docs/windows-quick-test.txt') 'READ-ME-FIRST.txt')
+foreach ($launch in @(@{name='START-K.cmd'; arguments='-Preset 11'},@{name='START-M.cmd'; arguments='-Preset 13'},@{name='RESTORE-GAME.cmd'; arguments='-Action restore'})) {
+    $path=Join-Path $PackageRoot $launch.name
+    @('@echo off','cd /d "%~dp0"',('"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -STA -ExecutionPolicy Bypass -File "%~dp0files\quick-test.ps1" '+$launch.arguments),'pause') |
+        Set-Content -LiteralPath $path -Encoding ASCII
+    $files.Add(@{path=$launch.name; sha256=(Get-FileHash -LiteralPath $path -Algorithm SHA256).Hash; version=$null})
+}
+$ngxCoreSha256='66767018C36B3BAB46398DADE3ADF173DAA3730FDA75965689EA848C9BC4E79B'
+$bundledNvidia=$null
+if ($NvidiaDirectory) {
+    # Opt-in for local testing or a distributor with appropriate permission.
+    # A matching hash establishes binary identity, not redistribution rights.
+    if (!$NvidiaLicensePath -or !(Test-Path -LiteralPath $NvidiaLicensePath -PathType Leaf)) {
+        throw 'Bundled NVIDIA files require -NvidiaLicensePath with their applicable license. This option does not establish redistribution permission.'
+    }
+    $core=Join-Path $NvidiaDirectory '_nvngx.dll'
+    $dlss=Join-Path $NvidiaDirectory 'nvngx_dlss.dll'
+    if ((Get-FileHash -LiteralPath $core -Algorithm SHA256).Hash -ne $ngxCoreSha256 -or
+        (Get-FileHash -LiteralPath $dlss -Algorithm SHA256).Hash -ne $baseline.dlssSha256) {
+        throw 'Bundled NVIDIA files must match the validated original NGX and DLSS hashes.'
+    }
+    [void](Stage $core 'files/nvidia/_nvngx.dll')
+    [void](Stage $dlss 'files/nvidia/nvngx_dlss.dll')
+    [void](Stage $NvidiaLicensePath 'licenses/NVIDIA-RTX.txt')
+    $bundledNvidia=@{ngxCore='nvidia/_nvngx.dll'; dlssDll='nvidia/nvngx_dlss.dll'; license='licenses/NVIDIA-RTX.txt'}
+} elseif ($NvidiaLicensePath) { throw '-NvidiaLicensePath requires -NvidiaDirectory.' }
+$metadata=[ordered]@{schema=1; packageCommit=$commit; binarySourceCommit=$baseline.d4rCommit;
+    ngxCoreSha256=$ngxCoreSha256; bundledNvidia=$bundledNvidia;
+    dependencies=@{optiScalerSourceCommit=$baseline.optiScaler.sourceCommit; zludaSourceCommit=$baseline.zludaBuild.sourceCommit;
+        llvmSource=$baseline.zludaBuild.llvmSource; hipRuntime=$baseline.hipRuntime};
+    commonFiles=$common; targets=$targets; files=$files}
+$metadata | ConvertTo-Json -Depth 12 | Set-Content -LiteralPath (Join-Path $PackageRoot 'files/package.json') -Encoding UTF8
+if ($ArchivePath) {
+    $ArchivePath=[IO.Path]::GetFullPath($ArchivePath)
+    if ($ArchivePath.StartsWith($PackageRoot+'\',[StringComparison]::OrdinalIgnoreCase)) { throw 'Place the ZIP outside the output directory.' }
+    New-Item -ItemType Directory -Force (Split-Path $ArchivePath) | Out-Null
+    Add-Type -AssemblyName System.IO.Compression,System.IO.Compression.FileSystem
+    $stream=[IO.File]::Open($ArchivePath,[IO.FileMode]::Create,[IO.FileAccess]::ReadWrite,[IO.FileShare]::None)
+    $archive=$null
+    try {
+        $archive=[IO.Compression.ZipArchive]::new($stream,[IO.Compression.ZipArchiveMode]::Create)
+        foreach ($relative in @($files.path)+@('files/package.json')) {
+            [void][IO.Compression.ZipFileExtensions]::CreateEntryFromFile($archive,(Join-Path $PackageRoot $relative),$relative,[IO.Compression.CompressionLevel]::Optimal)
+        }
+    } finally { if ($archive) { $archive.Dispose() }; $stream.Dispose() }
+}
+$nvidiaMode=if ($bundledNvidia) { 'bundled NVIDIA files; distributor must have appropriate permission' } else { 'user-supplied NVIDIA files' }
+Write-Host "Quick-test package: $PackageRoot (11 targets, automatic GPU selection, $nvidiaMode)"

scripts/windows/package-windows-release.ps1

@@ -0,0 +1,105 @@
+# Builds the Windows drag-in release: extract it into the game folder, copy
+# the two NVIDIA DLLs, edit d4r\d4r.ini. Like the Linux release, no installer
+# or launcher is involved. Inputs are the per-target game packages that
+# package-windows-game.ps1 produces (the same inputs as the quick test).
+[CmdletBinding()]
+param(
+    [string]$GamePackagePrefix,
+    [Parameter(Mandatory=$true)][string]$LoaderDll,
+    [Parameter(Mandatory=$true)][string]$PackageRoot,
+    [string[]]$Architectures,   # default: every target in gpu-targets.json; a subset makes a smaller release
+    [string]$ArchivePath
+)
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$GamePackagePrefix) { $GamePackagePrefix=Join-Path $repo 'dist/windows-gpu-coverage-game' }
+$PackageRoot=[IO.Path]::GetFullPath($PackageRoot)
+if (Test-Path -LiteralPath $PackageRoot) { throw 'Use a new output directory to avoid mixing releases.' }
+$git=Get-Command git -ErrorAction SilentlyContinue
+$commit=if ($git) { (& git -C $repo rev-parse HEAD).Trim() } else { $null }
+if ($ArchivePath -and (!$git -or [bool](& git -C $repo status --porcelain))) { throw 'A public ZIP needs git and committed sources.' }
+New-Item -ItemType Directory -Force $PackageRoot | Out-Null
+$files=[Collections.Generic.List[object]]::new()
+function Stage([string]$Source,[string]$Relative) {
+    $destination=Join-Path $PackageRoot $Relative
+    if (Test-Path -LiteralPath $destination) { throw "Duplicate release path: $Relative" }
+    New-Item -ItemType Directory -Force (Split-Path $destination) | Out-Null
+    Copy-Item -LiteralPath $Source -Destination $destination
+    $item=Get-Item -LiteralPath $destination
+    $files.Add(@{path=$Relative.Replace('\','/'); sha256=(Get-FileHash -LiteralPath $destination -Algorithm SHA256).Hash; version=$item.VersionInfo.FileVersion})
+}
+$targets=[ordered]@{}; $baseline=$null; $commonStaged=$false; $inventoryStaged=$false
+$selected=@(Get-D4RGpuTargets | Where-Object { !$Architectures -or $Architectures -contains $_.architecture })
+if (!$selected.Count -or ($Architectures -and $selected.Count -ne @($Architectures | Select-Object -Unique).Count)) { throw "Unknown GPU target in -Architectures: $($Architectures -join ', ')" }
+foreach ($gpu in $selected) {
+    $arch=$gpu.architecture; $source="$GamePackagePrefix-$arch"
+    $metadata=Get-Content -LiteralPath (Join-Path $source 'package.json') -Raw | ConvertFrom-Json
+    if ($metadata.architecture -ne $arch -or $metadata.d4rWorkingTreeDirty) { throw "Uncommitted or wrong-target input: $source" }
+    if (!$baseline) { $baseline=$metadata }
+    if ($metadata.dlssSha256 -ne $baseline.dlssSha256 -or $metadata.zludaBuild.sourceCommit -ne $baseline.zludaBuild.sourceCommit) { throw 'Input packages do not use the same validated dependencies.' }
+    $objects=0
+    foreach ($file in $metadata.files) {
+        $relative=$file.path.Replace('\','/'); $path=Join-Path $source $file.path
+        if ((Get-FileHash -LiteralPath $path -Algorithm SHA256).Hash -ne $file.sha256) { throw "Input file changed: $source/$relative" }
+        if ($relative.EndsWith('.hsaco')) { Assert-D4RCodeObjectTarget $path $arch; $objects++ }
+        # Per-target files get target-specific names so one folder serves every GPU.
+        # One GPU-query tool serves every target: it reports each device's real architecture.
+        if ($relative -eq 'd4r/d4r_gpu_inventory.exe') { if (!$inventoryStaged) { Stage $path 'd4r/d4r_gpu_inventory.exe'; $inventoryStaged=$true } }
+        elseif ($relative -eq 'd4r/_nvngx.dll') { Stage $path "d4r/_nvngx_$arch.dll" }
+        elseif ($relative -eq 'd4r/nvapi/nvapi64.dll') { Stage $path "d4r/nvapi/$arch/nvapi64.dll" }
+        elseif ($relative -like 'd4r/pixel_convert_*.hsaco') { Stage $path $relative }
+        elseif ($relative.StartsWith('d4r/native/')) { Stage $path ("d4r/native/$arch/" + $relative.Substring('d4r/native/'.Length)) }
+        elseif ($relative -eq 'OptiScaler.dll' -or $relative.StartsWith('licenses/') -or
+                ($relative.StartsWith('d4r/hip/') -or $relative.StartsWith('d4r/zluda/'))) {
+            $public=if ($relative -eq 'OptiScaler.dll') { 'dxgi.dll' } elseif ($relative.StartsWith('licenses/')) { "d4r/$relative" } else { $relative }
+            if (!$commonStaged) { Stage $path $public }
+            elseif ((Get-FileHash -LiteralPath (Join-Path $PackageRoot $public) -Algorithm SHA256).Hash -ne $file.sha256) { throw "Shared runtime differs in $arch : $relative" }
+        }
+        # Installer-only files (launcher, PowerShell installer, docs) are not part of a drag-in install.
+    }
+    if ($objects -ne 17) { throw "Expected 17 code objects for $arch" }
+    $commonStaged=$true
+    $targets[$arch]=@{binarySourceCommit=$metadata.d4rCommit; hardwareValidation=$metadata.hardwareValidation}
+}
+$loader=(Get-Item -LiteralPath $LoaderDll).FullName
+if ([IO.Path]::GetFileName($loader) -ne 'd4r_nvngx_loader.dll') { throw 'Pass the d4r_nvngx_loader.dll built by CMake.' }
+Stage $loader 'd4r/_nvngx.dll'
+Stage (Join-Path $repo 'packaging/windows/OptiScaler.ini') 'OptiScaler.ini'
+Stage (Join-Path $repo 'packaging/windows/d4r.ini') 'd4r/d4r.ini'
+Stage (Join-Path $repo 'tools/windows/dll-pins.txt') 'd4r/dll-pins.txt'
+Stage (Join-Path $repo 'tools/windows/gpu-targets.json') 'd4r/gpu-targets.json'
+if (!$inventoryStaged) { throw 'No d4r/d4r_gpu_inventory.exe in the inputs; d4r-check.ps1 needs it to query the GPU.' }
+foreach ($optional in @(@{source='packaging/windows/WINDOWS_README.txt'; path='WINDOWS_README.txt'},
+                         @{source='scripts/windows/d4r-check.ps1'; path='d4r/d4r-check.ps1'})) {
+    $path=Join-Path $repo $optional.source
+    if (Test-Path -LiteralPath $path) { Stage $path $optional.path }
+}
+# Shows players where the NGX core goes; a ZIP cannot carry an empty folder.
+$placeholder=Join-Path $PackageRoot 'd4r/ngx/PUT _nvngx.dll HERE.txt'
+New-Item -ItemType Directory -Force (Split-Path $placeholder) | Out-Null
+"Copy NVIDIA's _nvngx.dll into this folder. See WINDOWS_README.txt." | Set-Content -LiteralPath $placeholder -Encoding ASCII
+$files.Add(@{path='d4r/ngx/PUT _nvngx.dll HERE.txt'; sha256=(Get-FileHash -LiteralPath $placeholder -Algorithm SHA256).Hash; version=$null})
+if (Get-ChildItem -LiteralPath $PackageRoot -Recurse -File | Where-Object { $_.Name -eq 'nvngx_dlss.dll' -or ($_.Name -eq '_nvngx.dll' -and $_.DirectoryName -ne (Join-Path $PackageRoot 'd4r')) }) {
+    throw 'Proprietary NVIDIA binaries must not be in the release.'
+}
+# Read by d4r-check.ps1: every shipped file's hash, so a damaged or mixed install is reported.
+$manifest=[ordered]@{schema=1; kind='windows-drag-in'; packageCommit=$commit; binarySourceCommit=$baseline.d4rCommit;
+    dependencies=@{optiScalerSourceCommit=$baseline.optiScaler.sourceCommit; zludaSourceCommit=$baseline.zludaBuild.sourceCommit; hipRuntime=$baseline.hipRuntime};
+    targets=$targets; files=$files}
+$manifest | ConvertTo-Json -Depth 8 | Set-Content -LiteralPath (Join-Path $PackageRoot 'd4r/package.json') -Encoding UTF8
+if ($ArchivePath) {
+    $ArchivePath=[IO.Path]::GetFullPath($ArchivePath)
+    if ($ArchivePath.StartsWith($PackageRoot+'\',[StringComparison]::OrdinalIgnoreCase)) { throw 'Place the ZIP outside the output directory.' }
+    New-Item -ItemType Directory -Force (Split-Path $ArchivePath) | Out-Null
+    Add-Type -AssemblyName System.IO.Compression,System.IO.Compression.FileSystem
+    $stream=[IO.File]::Open($ArchivePath,[IO.FileMode]::Create,[IO.FileAccess]::ReadWrite,[IO.FileShare]::None)
+    $archive=$null
+    try {
+        $archive=[IO.Compression.ZipArchive]::new($stream,[IO.Compression.ZipArchiveMode]::Create)
+        foreach ($relative in @($files.path)+@('d4r/package.json')) {
+            [void][IO.Compression.ZipFileExtensions]::CreateEntryFromFile($archive,(Join-Path $PackageRoot $relative),$relative,[IO.Compression.CompressionLevel]::Optimal)
+        }
+    } finally { if ($archive) { $archive.Dispose() }; $stream.Dispose() }
+}
+Write-Host "Windows drag-in release: $PackageRoot ($($targets.Count) GPU target(s): $($targets.Keys -join ', '); no NVIDIA DLLs)"

scripts/windows/prepare-zluda-llvm-source.ps1

@@ -0,0 +1,34 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$LlvmSourceRoot)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+$expected='ff4dc1f7c9e1c64d4d69e40f4ed30c2280a96dfd'
+$actual=(& git -C $LlvmSourceRoot rev-parse HEAD).Trim()
+if ($LASTEXITCODE -or $actual -ne $expected) { throw "Expected audited ZLUDA LLVM source $expected, found $actual; review the patch against this revision." }
+$patches=@(Get-ChildItem (Join-Path $repo 'patches/zluda-llvm') -Filter *.patch | Sort-Object Name)
+foreach ($patch in $patches) {
+    $oldPreference=$ErrorActionPreference
+    try {
+        $ErrorActionPreference='Continue'
+        & git -C $LlvmSourceRoot apply --reverse --check $patch.FullName 2>$null
+        $applied=($LASTEXITCODE -eq 0)
+    } finally { $ErrorActionPreference=$oldPreference }
+    if (!$applied) {
+        & git -C $LlvmSourceRoot apply --check $patch.FullName
+        if ($LASTEXITCODE) { throw "LLVM source patch conflicts: $($patch.Name)" }
+        & git -C $LlvmSourceRoot apply $patch.FullName
+        if ($LASTEXITCODE) { throw "LLVM source patch failed: $($patch.Name)" }
+    }
+    Write-Host "LLVM source patch present: $($patch.Name)"
+}
+# The pinned backport is the entire intended LLVM delta.
+if ($patches.Count -ne 1) { throw 'Review combined LLVM source provenance before adding more patches.' }
+$audit=Join-Path $repo ('build/llvm-source-audit-'+[Guid]::NewGuid().ToString('N')+'.patch')
+New-Item -ItemType Directory -Force (Split-Path $audit) | Out-Null
+try {
+    & git -C $LlvmSourceRoot diff --binary --output=$audit
+    if ($LASTEXITCODE) { throw 'Cannot audit LLVM source diff.' }
+    $actualDiff=[IO.File]::ReadAllText($audit).Replace("`r`n","`n").TrimEnd()
+    $expectedDiff=[IO.File]::ReadAllText($patches[0].FullName).Replace("`r`n","`n").TrimEnd()
+    if ($actualDiff -cne $expectedDiff) { throw 'LLVM source contains changes outside the exported audited patch.' }
+} finally { if (Test-Path -LiteralPath $audit) { Remove-Item -LiteralPath $audit } }

scripts/windows/prepare-zluda-source.ps1

@@ -0,0 +1,25 @@
+[CmdletBinding()]
+param([string]$SourceRoot)
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$SourceRoot) { $SourceRoot = Join-Path $repo 'external/ZLUDA' }
+$SourceRoot = [IO.Path]::GetFullPath($SourceRoot)
+$base = 'ee2f25a180099fa42f36b2346732e1f2470a03ad'
+if (!(Test-Path (Join-Path $SourceRoot 'Cargo.toml'))) { throw 'Clone upstream ZLUDA into external/ZLUDA first.' }
+Push-Location $SourceRoot
+try {
+    $revision = (& git rev-parse HEAD).Trim()
+    if ($revision -ne $base) { throw "Expected ZLUDA $base, found $revision; review patches against the new revision." }
+    $dirty = @(& git status --porcelain --untracked-files=no --ignore-submodules=all)
+    if ($dirty.Count) { throw 'ZLUDA source has tracked modifications. Keep this prepared checkout; do not reapply patches.' }
+    & git switch -c windows-rdna4
+    if ($LASTEXITCODE) { throw 'Could not create the local ZLUDA branch.' }
+    foreach ($patch in (Get-ChildItem -LiteralPath (Join-Path $repo 'patches/zluda') -Filter '*.patch' | Sort-Object Name)) {
+        & git apply --check $patch.FullName
+        if ($LASTEXITCODE) { throw "Patch check failed: $($patch.Name)" }
+        & git apply --whitespace=nowarn $patch.FullName
+        if ($LASTEXITCODE) { throw "Patch failed: $($patch.Name)" }
+        Write-Host "Applied $($patch.Name)"
+    }
+    Write-Host "Prepared Windows ZLUDA source at $SourceRoot (base $base)"
+} finally { Pop-Location }

scripts/windows/profile-windows-rdna4.ps1

@@ -0,0 +1,33 @@
+[CmdletBinding()]
+param(
+    [ValidateSet(11,13)][int]$Preset = 11,
+    [string]$ZludaRoot, [string]$PackageRoot, [string]$OutputDirectory,
+    [int]$Iterations = 4,
+    [switch]$Translated
+)
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$ZludaRoot) { $ZludaRoot=Join-Path $repo 'dist/zluda-windows-final' }
+if (!$PackageRoot) { $PackageRoot=Join-Path $repo 'dist/windows-rdna4-command-list' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo ('test-results/profile-' + $Preset + '-' + (Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
+$settings=@{D4R_ZLUDA_PROFILE='1'; D4R_PROFILE_STAGES='1'; D4R_VALIDATE_OUTPUT='1';
+    D4R_ZLUDA_PROFILE_DEFERRED=$null; D4R_ZLUDA_PROFILE_ALLOW_LEGACY=$null; D4R_ZLUDA_PROFILE_EVERY=$null;
+    D4R_ZLUDA_NATIVE_DIR=$(if ($Translated) { $null } elseif ($Preset -eq 11) { Join-Path $repo "build/native-k-$GpuArch" } else { Join-Path $repo "build/native-m-$GpuArch" })}
+$old=@{}
+try {
+    foreach ($key in $settings.Keys) { $old[$key]=[Environment]::GetEnvironmentVariable($key,'Process'); [Environment]::SetEnvironmentVariable($key,$settings[$key],'Process') }
+    $arguments=@{RuntimeProfile='therock'; ZludaRoot=$ZludaRoot; PackageRoot=$PackageRoot; OutputDirectory=$OutputDirectory;
+        NgxCore=(Join-Path $repo '_nvngx.dll'); DlssDll=(Join-Path $repo 'nvngx_dlss.dll'); NgxMode='d3d12';
+        NgxAbi='project-legacy'; Preset=$Preset; NgxOnly=$true; RequireNativeNetwork=(!$Translated); CommandListBackend=$true;
+        CaptureExceptions=$true; EarlyIndirectProbe=$true; PixelProfile='depth-stencil'; BarrierMode='inherited-legacy';
+        Iterations=$Iterations; TimeoutSeconds=300; OptiScalerDll=(Join-Path $repo 'dist/optiscaler-windows-d4r/OptiScaler.dll')}
+    & (Join-Path $PSScriptRoot 'test-windows-rdna4.ps1') @arguments
+    if ($LASTEXITCODE) { throw 'Profiling workload failed; see diagnostic bundle.' }
+    $python=(Get-Command python.exe -ErrorAction Stop).Source
+    & $python (Join-Path $repo 'tools/windows/profile_report.py') $OutputDirectory --output (Join-Path $OutputDirectory 'profile.json')
+    if ($LASTEXITCODE) { throw 'No usable profile records.' }
+} finally {
+    foreach ($key in $old.Keys) { [Environment]::SetEnvironmentVariable($key,$old[$key],'Process') }
+}

scripts/windows/quick-test.ps1

@@ -0,0 +1,188 @@
+[CmdletBinding()]
+param(
+    [ValidateSet('run','install','restore')][string]$Action='run',
+    [ValidateSet(11,13)][int]$Preset=11,
+    [string]$GameExe, [string]$NgxCore, [string]$DlssDll,
+    [switch]$CaptureExceptions
+)
+$ErrorActionPreference='Stop'
+$root=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '..'))
+$work=Join-Path $root 'work'
+$settingsPath=Join-Path $work 'settings.json'
+New-Item -ItemType Directory -Force $work | Out-Null
+$saved=$null
+if (Test-Path -LiteralPath $settingsPath) {
+    try { $saved=Get-Content -LiteralPath $settingsPath -Raw | ConvertFrom-Json }
+    catch { Write-Host 'Saved choices could not be read. Select the files again.' }
+}
+function Select-LocalFile([string]$Title, [string]$FileName, [string]$Previous) {
+    if ($Previous -and (Test-Path -LiteralPath $Previous -PathType Leaf)) { return (Get-Item -LiteralPath $Previous).FullName }
+    Add-Type -AssemblyName System.Windows.Forms
+    $dialog=New-Object Windows.Forms.OpenFileDialog
+    try {
+        $dialog.Title=$Title; $dialog.FileName=$FileName
+        $dialog.Filter=if ($FileName -eq '*.exe') { 'Game executable (*.exe)|*.exe' } else { "$FileName|$FileName" }
+        if ($dialog.ShowDialog() -ne [Windows.Forms.DialogResult]::OK) { throw 'File selection cancelled. No test was launched.' }
+        return $dialog.FileName
+    } finally { $dialog.Dispose() }
+}
+function Copy-Payload([string]$Source, [string]$Destination, [string]$Relative) {
+    $path=[IO.Path]::GetFullPath((Join-Path $Destination $Relative))
+    if (!$path.StartsWith($Destination+'\',[StringComparison]::OrdinalIgnoreCase)) { throw 'Invalid package path.' }
+    New-Item -ItemType Directory -Force (Split-Path $path) | Out-Null
+    Copy-Item -LiteralPath (Join-Path $Source $Relative) -Destination $path -Force
+}
+function Get-BundledNvidiaFile([string]$Relative) {
+    $directory=Join-Path $PSScriptRoot 'nvidia'
+    $path=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot $Relative))
+    if (!$path.StartsWith($directory+'\',[StringComparison]::OrdinalIgnoreCase) -or
+        !(Test-Path -LiteralPath $path -PathType Leaf)) { throw 'Invalid bundled NVIDIA file. Extract the complete package again.' }
+    return $path
+}
+if ($Action -eq 'restore') {
+    $GameExe=Select-LocalFile 'Select the SAME game executable used for the test' '*.exe' $(if ($GameExe) { $GameExe } elseif ($saved) { $saved.game })
+    & (Join-Path $PSScriptRoot 'common/windows-game.ps1') -Action restore -GameExe $GameExe
+    Write-Host 'RESTORED. Launch the game normally again.' -ForegroundColor Green
+    return
+}
+$output=Join-Path $root ('results/test-'+(Get-Date -Format 'yyyyMMdd-HHmmss-fff'))
+New-Item -ItemType Directory -Force $output | Out-Null
+$status=[ordered]@{action=$Action; preset=$Preset; status='starting'; hardwareValidationCompleted=$false}
+$selectedPackage=$null
+try {
+    Write-Host 'd4r Windows quick test - keep this window open until you EXIT the game.'
+    Write-Host 'Checking package and detecting the GPU...'
+    $manifest=Get-Content -LiteralPath (Join-Path $PSScriptRoot 'package.json') -Raw | ConvertFrom-Json
+    foreach ($file in $manifest.files) {
+        $path=[IO.Path]::GetFullPath((Join-Path $root $file.path))
+        if (!$path.StartsWith($root+'\',[StringComparison]::OrdinalIgnoreCase) -or
+            (Get-FileHash -LiteralPath $path -Algorithm SHA256).Hash -ne $file.sha256) { throw "Package is incomplete or changed. Extract the ZIP again. File: $($file.path)" }
+    }
+    $status.packageCommit=$manifest.packageCommit
+    $inventoryDir=Join-Path $output 'gpu'
+    New-Item -ItemType Directory -Force $inventoryDir | Out-Null
+    $info=New-Object Diagnostics.ProcessStartInfo
+    $info.FileName=Join-Path $PSScriptRoot 'targets/gfx1201/d4r/d4r_gpu_inventory.exe'
+    $info.Arguments='--hip-root "'+(Join-Path $PSScriptRoot 'common/d4r/hip')+'" --output-dir "'+$inventoryDir+'"'
+    $info.UseShellExecute=$false; $info.CreateNoWindow=$true
+    $info.EnvironmentVariables['D4R_DIAG_DIR']=$inventoryDir
+    $info.RedirectStandardOutput=$true; $info.RedirectStandardError=$true
+    $process=New-Object Diagnostics.Process; $process.StartInfo=$info
+    try {
+        if (!$process.Start()) { throw 'GPU detection could not start.' }
+        $stdout=$process.StandardOutput.ReadToEndAsync(); $stderr=$process.StandardError.ReadToEndAsync()
+        $timedOut=!$process.WaitForExit(30000)
+        if ($timedOut) { $process.Kill(); $process.WaitForExit() }
+        $stdout.GetAwaiter().GetResult() | Set-Content (Join-Path $inventoryDir 'stdout.log') -Encoding UTF8
+        $stderr.GetAwaiter().GetResult() | Set-Content (Join-Path $inventoryDir 'stderr.log') -Encoding UTF8
+        $status.inventoryExit='0x{0:X8}' -f [BitConverter]::ToUInt32([BitConverter]::GetBytes([int]$process.ExitCode),0)
+        if ($timedOut -or $process.ExitCode) { throw 'HIP could not detect your GPU. The diagnostic ZIP contains the details.' }
+    } finally { $process.Dispose() }
+    $inventory=Get-Content -LiteralPath (Join-Path $inventoryDir 'gpu-inventory.json') -Raw | ConvertFrom-Json
+    $devices=@($inventory.devices | Where-Object { $_.buildEligible -and $_.wavefrontSize -eq 32 -and $manifest.targets.PSObject.Properties.Name -contains $_.architecture } | Sort-Object vramBytes -Descending)
+    if (!$devices.Count) { throw 'No supported RDNA3/RDNA4 HIP device was detected. See the GPU inventory in the diagnostic ZIP.' }
+    $device=$devices[0]
+    if (@($devices.architecture | Select-Object -Unique).Count -gt 1) {
+        for ($i=0; $i -lt $devices.Count; $i++) { Write-Host "$($i+1): $($devices[$i].name) ($($devices[$i].architecture))" }
+        $choice=Read-Host 'Select the GPU used by your game (press Enter for 1)'
+        if ($choice) {
+            $index=0
+            if (![int]::TryParse($choice,[ref]$index) -or $index -lt 1 -or $index -gt $devices.Count) { throw 'Invalid GPU selection.' }
+            $device=$devices[$index-1]
+        }
+    }
+    $arch=$device.architecture; $target=$manifest.targets.$arch
+    $status.gpu=$device; $status.binarySourceCommit=$target.binarySourceCommit
+    Write-Host "Detected: $($device.name) / $arch" -ForegroundColor Cyan
+    Write-Host 'Experimental build. This run is a correctness test, not an FPS benchmark.'
+    $previousGame=if ($saved) { $saved.game } else { $null }
+    if (!$GameExe -and $previousGame -and (Test-Path -LiteralPath $previousGame)) {
+        Write-Host "Remembered game: $previousGame"
+        $reuse=Read-Host 'Press Enter to use this game, or type C to choose another (restore the old game first)'
+        if ($reuse -match '^(?i)c$') { $previousGame=$null }
+        elseif ($reuse) { throw 'Invalid choice. Press Enter or type C on the next run.' }
+    }
+    $GameExe=Select-LocalFile 'Select the actual D3D12 game .exe (not Steam or a launcher)' '*.exe' $(if ($GameExe) { $GameExe } else { $previousGame })
+    $bundledCore=$null; $bundledDlss=$null
+    if ($manifest.bundledNvidia) {
+        $bundledCore=Get-BundledNvidiaFile $manifest.bundledNvidia.ngxCore
+        $bundledDlss=Get-BundledNvidiaFile $manifest.bundledNvidia.dlssDll
+    }
+    $status.nvidiaDllSource=@{core=$(if ($NgxCore) { 'explicit' } elseif ($bundledCore) { 'bundled' } else { 'user-supplied' });
+        dlss=$(if ($DlssDll) { 'explicit' } elseif ($bundledDlss) { 'bundled' } else { 'user-supplied' })}
+    if ($bundledCore -and !$NgxCore -and !$DlssDll) { Write-Host 'Using the validated NVIDIA DLL pair included by this package distributor.' }
+    $NgxCore=Select-LocalFile 'Select your ORIGINAL NVIDIA _nvngx.dll (32.0.16.1714)' '_nvngx.dll' $(if ($NgxCore) { $NgxCore } elseif ($bundledCore) { $bundledCore } elseif ($saved) { $saved.ngxCore })
+    $DlssDll=Select-LocalFile 'Select your NVIDIA nvngx_dlss.dll (310.9.1)' 'nvngx_dlss.dll' $(if ($DlssDll) { $DlssDll } elseif ($bundledDlss) { $bundledDlss } elseif ($saved) { $saved.dlssDll })
+    $status.game=$GameExe
+    $status.localDlls=@($NgxCore,$DlssDll | ForEach-Object { $item=Get-Item -LiteralPath $_; @{path=$item.FullName; version=$item.VersionInfo.FileVersion; sha256=(Get-FileHash -LiteralPath $_ -Algorithm SHA256).Hash} })
+    if ((Get-FileHash -LiteralPath $NgxCore -Algorithm SHA256).Hash -ne $manifest.ngxCoreSha256) {
+        throw 'Wrong _nvngx.dll. This test needs the original NVIDIA 32.0.16.1714 DLL, not the d4r shim. Select the correct file on the next run.'
+    }
+    if ((Get-FileHash -LiteralPath $DlssDll -Algorithm SHA256).Hash -ne $target.dlssSha256) {
+        throw 'Wrong nvngx_dlss.dll. This test needs exactly NVIDIA DLSS 310.9.1. Select the correct file on the next run.'
+    }
+    if ($GameExe.StartsWith($root+'\',[StringComparison]::OrdinalIgnoreCase)) { throw 'Select the installed GAME executable, outside this extracted package.' }
+    # Save only validated choices. Wrong DLLs are never remembered.
+    @{game=$GameExe; ngxCore=$NgxCore; dlssDll=$DlssDll; architecture=$arch} | ConvertTo-Json | Set-Content -LiteralPath $settingsPath -Encoding UTF8
+    $selectedPackage=Join-Path $work "package-$arch"
+    New-Item -ItemType Directory -Force $selectedPackage | Out-Null
+    $selectedFiles=@()
+    foreach ($file in $manifest.commonFiles) {
+        Copy-Payload (Join-Path $PSScriptRoot 'common') $selectedPackage $file.path
+        $selectedFiles+=$file
+    }
+    foreach ($file in $target.files) {
+        Copy-Payload (Join-Path $PSScriptRoot "targets/$arch") $selectedPackage $file.path
+        $selectedFiles+=$file
+    }
+    @{architecture=$arch; d4rCommit=$target.binarySourceCommit; packageCommit=$manifest.packageCommit;
+      dlssSha256=$target.dlssSha256; hardwareValidation=$target.hardwareValidation; files=$selectedFiles} |
+        ConvertTo-Json -Depth 8 | Set-Content -LiteralPath (Join-Path $selectedPackage 'package.json') -Encoding UTF8
+    Write-Host 'Original game files will be backed up. RESTORE-GAME.cmd reverses the installation.'
+    Write-Host 'In the game: select DLSS if available; otherwise select FSR/XeSS to let OptiScaler intercept it.'
+    Write-Host 'The first launch compiles shaders and can take several minutes. Then play for 30 seconds and EXIT the game normally.'
+    & (Join-Path $selectedPackage 'windows-game.ps1') -Action $Action -GameExe $GameExe -NgxCore $NgxCore -DlssDll $DlssDll `
+        -Preset $Preset -ValidateOutput -CaptureExceptions:$CaptureExceptions -OutputDirectory $output
+    if ($Action -eq 'install') { $status.status='installed-only' }
+    else {
+        $summary=Get-Content -LiteralPath (Join-Path $output 'summary.json') -Raw | ConvertFrom-Json
+        $status.gameSummary=$summary
+        $required=Get-Content -LiteralPath (Join-Path $selectedPackage 'd4r/native/d4r-kernels.txt') | Where-Object {
+            if ($Preset -eq 11) { $_ -match '^dltss_pwin_' } else { $_ -match '^rrlite_' }
+        } | ForEach-Object { $_.Split(' ')[0] }
+        $hits=@($summary.kernels | Where-Object { $_.backend -eq 'native' -and $_.launches -gt 0 } | ForEach-Object { $_.kernel })
+        $status.missingNativeKernels=@($required | Where-Object { $hits -notcontains $_ })
+        $status.translatedNativeKernels=@($summary.kernels | Where-Object { $_.backend -eq 'translated' -and $required -contains $_.kernel } | ForEach-Object { $_.kernel })
+        $passed=$summary.exitCode -eq '0x0' -and $summary.completedFrames -gt 0 -and $summary.nativeLaunches -gt 0 -and
+            $summary.outputGpuChecks -gt 0 -and $summary.failures -eq 0 -and $summary.nonfiniteOutputs -eq 0 -and
+            $summary.previousFrameOutputs -eq 0 -and $summary.cpuImageCopyFrames -eq 0 -and
+            @($required).Count -eq $(if ($Preset -eq 11) { 11 } else { 5 }) -and
+            $status.missingNativeKernels.Count -eq 0 -and $status.translatedNativeKernels.Count -eq 0
+        $status.hardwareValidationCompleted=[bool]$passed
+        $status.status=if ($passed) { 'backend-checks-passed-image-still-needs-user-review' }
+            elseif ($summary.completedFrames -eq 0 -and $summary.exitCode -eq '0x0' -and $summary.failures -eq 0) { 'inconclusive-process-exited-without-dlss-frames' }
+            else { 'backend-checks-failed-or-no-dlss-frames' }
+        $status.session=$summary.session
+        if ($status.status -eq 'inconclusive-process-exited-without-dlss-frames') {
+            Write-Host 'The launched process exited without a DLSS frame. A Steam/launcher restart is not tracked by this test. Keep Steam open and select the actual game executable. Send the ZIP if it restarts again.' -ForegroundColor Yellow
+        }
+        Write-Host $(if ($passed) { 'Backend checks PASSED. Please also report whether the image looked correct.' } else { 'Test did not pass. Send the diagnostic ZIP; do not guess from the FPS.' }) -ForegroundColor $(if ($passed) { 'Green' } else { 'Yellow' })
+    }
+} catch {
+    $status.status='failed'; $status.error=$_.Exception.Message
+    $_ | Out-String | Set-Content -LiteralPath (Join-Path $output 'error.txt') -Encoding UTF8
+    Write-Host "TEST STOPPED: $($status.error)" -ForegroundColor Red
+} finally {
+    if ($selectedPackage) {
+        $preflights=Join-Path $selectedPackage 'results'
+        $latest=Get-ChildItem -LiteralPath $preflights -Directory -ErrorAction SilentlyContinue | Sort-Object Name -Descending | Select-Object -First 1
+        if ($latest) { Copy-Item -LiteralPath $latest.FullName -Destination (Join-Path $output 'preflight') -Recurse -Force }
+    }
+    try { Get-CimInstance Win32_VideoController | Select-Object Name,DriverVersion,DriverDate | ConvertTo-Json | Set-Content -LiteralPath (Join-Path $output 'driver.json') -Encoding UTF8 } catch {}
+    $status | ConvertTo-Json -Depth 12 | Set-Content -LiteralPath (Join-Path $output 'quick-test.json') -Encoding UTF8
+    Compress-Archive -LiteralPath $output -DestinationPath ($output+'.zip') -Force
+    Write-Host "SEND THIS ONE FILE: $output.zip" -ForegroundColor Cyan
+    Write-Host 'Also tell us: GPU model, game name, K or M, and whether the image was correct.'
+    Write-Host 'Close the game before running RESTORE-GAME.cmd.'
+}
+if ($status.status -eq 'failed' -or $status.status -eq 'backend-checks-failed-or-no-dlss-frames' -or $status.status.StartsWith('inconclusive-')) { exit 1 }

scripts/windows/send-game-key.ps1

@@ -0,0 +1,25 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][int]$GameProcessId,
+    [ValidateSet('Enter','Escape','Up','Down','Tab')][string]$Key='Enter')
+$ErrorActionPreference='Stop'
+$process=Get-Process -Id $GameProcessId -ErrorAction Stop
+if ($process.ProcessName -ne 'SHProto-Win64-Shipping') { throw 'This helper is scoped to the authorized Silent Hill 2 diagnostic.' }
+if (!('D4RGameKeys' -as [type])) {
+    Add-Type @'
+using System;
+using System.Runtime.InteropServices;
+public static class D4RGameKeys {
+    [DllImport("user32.dll")] public static extern bool PostMessage(IntPtr window, uint message, IntPtr key, IntPtr flags);
+    [DllImport("user32.dll")] public static extern uint MapVirtualKey(uint code, uint kind);
+}
+'@
+}
+$window=$process.MainWindowHandle
+if ($window -eq [IntPtr]::Zero) { throw 'Game window missing on this desktop.' }
+$codes=@{Enter=13; Escape=27; Up=38; Down=40; Tab=9}
+$code=$codes[$Key]; $scan=[D4RGameKeys]::MapVirtualKey($code,0)
+$flags=[long](1 -bor ($scan -shl 16))
+if ($Key -in @('Up','Down')) { $flags=$flags -bor 0x01000000 }
+if (![D4RGameKeys]::PostMessage($window,0x100,[IntPtr]$code,[IntPtr]$flags)) { throw 'Game key-down post failed.' }
+if (![D4RGameKeys]::PostMessage($window,0x101,[IntPtr]$code,[IntPtr]($flags -bor 0xc0000000L))) { throw 'Game key-up post failed.' }
+Write-Host "Sent $Key only to diagnostic game PID $GameProcessId."

scripts/windows/setup-rust-toolchain.ps1

@@ -0,0 +1,48 @@
+[CmdletBinding()]
+param([string]$ToolRoot, [string]$DownloadRoot)
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$ToolRoot) { $ToolRoot = Join-Path $repo '.tools/rust-1.98.1-gnu' }
+if (!$DownloadRoot) { $DownloadRoot = Join-Path $repo '.tools/downloads' }
+$ToolRoot = [IO.Path]::GetFullPath($ToolRoot)
+$DownloadRoot = [IO.Path]::GetFullPath($DownloadRoot)
+New-Item -ItemType Directory -Force $ToolRoot,$DownloadRoot | Out-Null
+# Pinned official Rust 2026-09-03 manifest. The toolchain is local to this
+# workspace; rustup, PATH changes and machine-wide installation are unnecessary.
+$components = @(
+    @{Name='rustc'; Hash='f0e8e33973771acc4d2f87891b19d4f3f2d3827e2e7848c091d7c070bd63479c'},
+    @{Name='cargo'; Hash='4bd77f16bd2a26db6eacf9320414d3a792d9998cb5e9ac122280ba56126f2a44'},
+    @{Name='rust-std'; Hash='5bb599a541fcb9c0edc00e512570f60d2262623f1e2a19a44cce3a7a97208788'},
+    @{Name='rust-mingw'; Hash='75d898804789c12ca969365f0a86d85c3bca1fdb070f0be615ca513a986b2674'}
+)
+foreach ($component in $components) {
+    $package = "$($component.Name)-1.98.1-x86_64-pc-windows-gnu"
+    $archive = Join-Path $DownloadRoot "$package.tar.xz"
+    if (!(Test-Path $archive) -or (Get-FileHash -LiteralPath $archive -Algorithm SHA256).Hash -ne $component.Hash) {
+        Write-Host "Downloading official Rust component $($component.Name)"
+        & curl.exe --fail --location --silent --show-error --connect-timeout 15 --max-time 300 --retry 2 `
+            "https://static.rust-lang.org/dist/2026-09-03/$package.tar.xz" --output $archive
+        if ($LASTEXITCODE) { throw "Download failed for $package (exit=$LASTEXITCODE)" }
+    }
+    if ((Get-FileHash -LiteralPath $archive -Algorithm SHA256).Hash -ne $component.Hash) {
+        throw "Rust component SHA256 mismatch: $archive"
+    }
+    $extract = Join-Path $DownloadRoot $package
+    if (!(Test-Path (Join-Path $extract 'components'))) {
+        & tar.exe -xf $archive -C $DownloadRoot
+        if ($LASTEXITCODE) { throw "Extract failed: $archive" }
+    }
+    foreach ($entry in (Get-Content -LiteralPath (Join-Path $extract 'components'))) {
+        $payload = Join-Path $extract $entry
+        foreach ($directory in @('bin','lib','share','etc')) {
+            $source = Join-Path $payload $directory
+            if (Test-Path $source) { Copy-Item -LiteralPath $source -Destination $ToolRoot -Recurse -Force }
+        }
+    }
+    Write-Host "Verified and installed $package"
+}
+& (Join-Path $ToolRoot 'bin/rustc.exe') --version
+if ($LASTEXITCODE) { throw 'Rust compiler failed to start' }
+& (Join-Path $ToolRoot 'bin/cargo.exe') --version
+if ($LASTEXITCODE) { throw 'Cargo failed to start' }
+Write-Host "Local Rust toolchain: $ToolRoot"

scripts/windows/setup-windows-tools.ps1

@@ -0,0 +1,46 @@
+[CmdletBinding()]
+param([ValidateSet('stable', 'therock')][string]$RuntimeProfile = 'stable')
+$ErrorActionPreference = 'Stop'
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+$localTools = Join-Path $repo '.tools'
+$downloadDirectory = Join-Path $localTools 'downloads'
+New-Item -ItemType Directory -Force $downloadDirectory | Out-Null
+function Get-VerifiedArchive([string]$Url, [string]$Name, [string]$Hash, [string]$Destination, [string]$Marker) {
+    if (Test-Path -LiteralPath $Marker) { Write-Host "Already present: $Marker"; return }
+    $archive = Join-Path $downloadDirectory $Name
+    if (!(Test-Path -LiteralPath $archive)) {
+        Invoke-WebRequest -UseBasicParsing -Uri $Url -OutFile $archive
+    }
+    if ((Get-FileHash -LiteralPath $archive -Algorithm SHA256).Hash -ne $Hash) {
+        throw "SHA256 mismatch: $archive (remove this download and retry)"
+    }
+    if ([IO.Path]::GetExtension($archive) -eq '.whl') {
+        python -c 'import sys,zipfile; zipfile.ZipFile(sys.argv[1]).extractall(sys.argv[2])' $archive $Destination
+        if ($LASTEXITCODE) { throw "Wheel extraction exit=$LASTEXITCODE" }
+    } else { Expand-Archive -LiteralPath $archive -DestinationPath $Destination -Force }
+    if (!(Test-Path -LiteralPath $Marker)) { throw "Archive layout changed: $Marker" }
+}
+Get-VerifiedArchive 'https://github.com/mstorsjo/llvm-mingw/releases/download/20260922/llvm-mingw-20260922-ucrt-x86_64.zip' `
+    'llvm-mingw.zip' 'e3ad77d117a4bea19a7a3b333341824d79a5a371004a10e25b8504e7b3047666' $localTools `
+    (Join-Path $localTools 'llvm-mingw-20260922-ucrt-x86_64/bin/x86_64-w64-mingw32-clang++.exe')
+Get-VerifiedArchive 'https://github.com/vosen/ZLUDA/releases/download/v7-preview.11/zluda-windows-ee2f25a.zip' `
+    'zluda.zip' '7788c1ed43385e62f0cc5f4d1aead24c92b671c02f1d685f63182540dea16d74' (Join-Path $localTools 'zluda') `
+    (Join-Path $localTools 'zluda/zluda/nvcuda.dll')
+if ($RuntimeProfile -eq 'therock') {
+    Get-VerifiedArchive 'https://nightly.repo.amd.com/rocm/core/whl-next/rocm-sdk-core/rocm_sdk_core-10.2.0a20260929-py3-none-win_amd64.whl' `
+        'rocm_sdk_core-10.2.0a20260929-py3-none-win_amd64.whl' `
+        '9623b97ca511eaa176905075a504393eca6fde594222af10b55e4fb1edfe5a25' `
+        (Join-Path $localTools 'therock-10.2.0a20260929') `
+        (Join-Path $localTools 'therock-10.2.0a20260929/_rocm_sdk_core/bin/amdhip64_7.dll')
+}
+if (!(Test-Path (Join-Path $localTools 'python/cmake/data/bin/cmake.exe')) -or
+    !(Test-Path (Join-Path $localTools 'python/bin/ninja.exe'))) {
+    python -m pip install --target (Join-Path $localTools 'python') cmake==3.31.6 ninja==1.11.1.4
+    if ($LASTEXITCODE) { throw "pip install exit=$LASTEXITCODE" }
+}
+if (!(Test-Path (Join-Path $localTools 'python/vendor/numpy/__init__.py'))) {
+    python -m pip install --disable-pip-version-check --only-binary=:all: `
+        --target (Join-Path $localTools 'python/vendor') numpy==2.4.6
+    if ($LASTEXITCODE) { throw "NumPy reference install exit=$LASTEXITCODE" }
+}
+Write-Host 'Tools ready. Run scripts/windows/build-windows-rdna4.ps1.'

scripts/windows/stage-native-k.ps1

@@ -0,0 +1,30 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$DlssDll, [string]$PackageRoot, [string]$OutputDirectory, [string]$GpuArch)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-therock' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $GpuArch
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo "build/native-k-$GpuArch" }
+if (![IO.Path]::IsPathRooted($DlssDll) -or !(Test-Path -LiteralPath $DlssDll)) {
+    throw 'Supply the absolute path to your local nvngx_dlss.dll.'
+}
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+foreach ($object in Get-ChildItem -LiteralPath $OutputDirectory -Filter '*.hsaco') {
+    Assert-D4RCodeObjectTarget $object.FullName $GpuArch
+}
+$layers = @('enc0','enc1','enc2','enc3','enc4','dec5','dec4','dec3','dec2','dec1','dec0')
+foreach ($layer in $layers) {
+    $name = "dltss_pwin_${layer}_layer"
+    $source = Join-Path $PackageRoot "experimental/k/${name}_${GpuArch}.hsaco"
+    if (!(Test-Path -LiteralPath $source)) { throw "Native K module missing: $source" }
+    Assert-D4RCodeObjectTarget $source $GpuArch
+    Copy-Item -LiteralPath $source -Destination (Join-Path $OutputDirectory "$name.hsaco") -Force
+}
+& python (Join-Path $repo 'kernels/tools/kernel_manifest.py') $OutputDirectory $DlssDll
+if ($LASTEXITCODE) { throw "Native manifest generation failed ($LASTEXITCODE)" }
+@{architecture=$GpuArch; family='K'; dlssSha256=(Get-FileHash -LiteralPath $DlssDll -Algorithm SHA256).Hash;
+    validation='staged only; GPU execution and DLSS capture/reference validation required';
+    modules=@(Get-ChildItem -LiteralPath $OutputDirectory -Filter '*.hsaco' | Get-FileHash -Algorithm SHA256)} |
+    ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'build-info.json') -Encoding UTF8
+Write-Host "Experimental native K directory: $OutputDirectory"

scripts/windows/stage-native-m.ps1

@@ -0,0 +1,30 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$DlssDll, [string]$PackageRoot, [string]$OutputDirectory, [string]$GpuArch)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-therock' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $GpuArch
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo "build/native-m-$GpuArch" }
+if (![IO.Path]::IsPathRooted($DlssDll) -or !(Test-Path -LiteralPath $DlssDll)) {
+    throw 'Supply the absolute path to your local nvngx_dlss.dll.'
+}
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+foreach ($object in Get-ChildItem -LiteralPath $OutputDirectory -Filter '*.hsaco') {
+    Assert-D4RCodeObjectTarget $object.FullName $GpuArch
+}
+foreach ($layer in @('enc1','enc2','enc3_tube','dec2','dec1')) {
+    $name = "rrlite_${layer}_4x4"
+    $source = Join-Path $PackageRoot "experimental/m/${name}_${GpuArch}.hsaco"
+    if (!(Test-Path -LiteralPath $source)) { throw "Native M module missing: $source" }
+    Assert-D4RCodeObjectTarget $source $GpuArch
+    Copy-Item -LiteralPath $source -Destination (Join-Path $OutputDirectory "$name.hsaco") -Force
+}
+& python (Join-Path $repo 'kernels/tools/kernel_manifest.py') $OutputDirectory $DlssDll
+if ($LASTEXITCODE) { throw "Native manifest generation failed ($LASTEXITCODE)" }
+@{architecture=$GpuArch; family='M'; numerics='SWIN_EXACT; SWIN_EXACT_PV; FP16 widening; native FP8 disabled';
+    dlssSha256=(Get-FileHash -LiteralPath $DlssDll -Algorithm SHA256).Hash;
+    validation='staged only; GPU execution and DLSS capture/reference validation required';
+    modules=@(Get-ChildItem -LiteralPath $OutputDirectory -Filter '*.hsaco' | Get-FileHash -Algorithm SHA256)} |
+    ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'build-info.json') -Encoding UTF8
+Write-Host "Experimental native M directory: $OutputDirectory"

scripts/windows/test-async-k.ps1

@@ -0,0 +1,84 @@
+[CmdletBinding()]
+param(
+    [string]$NgxCore, [string]$DlssDll, [string]$NativeRoot,
+    [string]$ZludaRoot, [string]$PackageRoot,
+    [string]$Resolution = '3840x2160',
+    [string]$InputResolution,
+    [switch]$ProfileGpuBoundary,
+    [switch]$ProfileKernelsDeferred,
+    [switch]$BatchInputCopies,
+    [ValidateSet('baseline','packed','unorm','depth-stencil')][string]$PixelProfile = 'depth-stencil',
+    [string]$OutputDirectory
+)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$NgxCore) { $NgxCore = Join-Path $repo '_nvngx.dll' }
+if (!$DlssDll) { $DlssDll = Join-Path $repo 'nvngx_dlss.dll' }
+if (!$ZludaRoot) { $ZludaRoot = Join-Path $repo 'dist/zluda-windows-api-profile' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-command-list' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$NativeRoot) { $NativeRoot = Join-Path $repo "build/native-k-$GpuArch" }
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/async-k-' + (Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
+if ($Resolution -notmatch '^([0-9]+)x([0-9]+)$') { throw 'Resolution must be WIDTHxHEIGHT' }
+$width=$Matches[1]; $height=$Matches[2]
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$settings = @{D4R_DIAG_BURST='1'; D4R_DIAG_RECREATE=$null; D4R_ASYNC_INTEROP=$null;
+    D4R_BATCH_INPUT_COPIES=$null;
+    D4R_ZLUDA_NATIVE_DIR=$NativeRoot; D4R_QUIET_API='1'; D4R_VALIDATE_OUTPUT='1';
+    D4R_PROFILE_STAGES='1'; D4R_ZLUDA_PROFILE=$null; D4R_ZLUDA_PROFILE_API=$null;
+    D4R_ZLUDA_PROFILE_DEFERRED=$(if ($ProfileKernelsDeferred) { '1' } else { $null });
+    D4R_ZLUDA_PROFILE_ALLOW_LEGACY=$(if ($ProfileKernelsDeferred) { '1' } else { $null });
+    D4R_ZLUDA_PROFILE_EVERY=$(if ($ProfileKernelsDeferred) { '1' } else { $null });
+    D4R_PROFILE_GPU_BOUNDARY=$(if ($ProfileGpuBoundary) { '1' } else { $null });
+    ZLUDA_CACHE_DIR=(Join-Path $repo 'build/zluda-cache-windows');
+    PYTHONPATH=(Join-Path $repo '.tools/python/vendor')}
+$old=@{}
+try {
+    foreach ($key in $settings.Keys) {
+        $old[$key]=[Environment]::GetEnvironmentVariable($key,'Process')
+        [Environment]::SetEnvironmentVariable($key,$settings[$key],'Process')
+    }
+    foreach ($mode in @('burst','recreate')) {
+        [Environment]::SetEnvironmentVariable('D4R_DIAG_RECREATE', $(if ($mode -eq 'recreate') { '1' } else { $null }), 'Process')
+        foreach ($variant in @('sync','async')) {
+            [Environment]::SetEnvironmentVariable('D4R_ASYNC_INTEROP', $(if ($variant -eq 'async') { '1' } else { $null }), 'Process')
+            [Environment]::SetEnvironmentVariable('D4R_BATCH_INPUT_COPIES', $(if ($BatchInputCopies -and $variant -eq 'async') { '1' } else { $null }), 'Process')
+            $output=Join-Path $OutputDirectory "$variant-$mode"
+            $arguments=@{RuntimeProfile='therock'; ZludaRoot=$ZludaRoot; PackageRoot=$PackageRoot;
+                NgxCore=$NgxCore; DlssDll=$DlssDll; NgxOnly=$true; NgxMode='d3d12'; NgxAbi='project-legacy';
+                Preset=11; NgxCreateFlags=11; NgxOutputResolution=$Resolution; RequireNativeNetwork=$true;
+                NgxInputResolution=$InputResolution;
+                CommandListBackend=$true; EarlyIndirectProbe=$true; PixelProfile=$PixelProfile;
+                BarrierMode='inherited-legacy'; Iterations=3; CaptureExceptions=$true; TimeoutSeconds=600;
+                OptiScalerDll=(Join-Path $repo 'dist/optiscaler-windows-d4r/OptiScaler.dll'); OutputDirectory=$output}
+            & (Join-Path $PSScriptRoot 'test-windows-rdna4.ps1') @arguments
+            if ($LASTEXITCODE) { throw "Failed $variant-$mode; logs: $output" }
+            if ($ProfileKernelsDeferred) {
+                $stderr=Get-Content -LiteralPath (Join-Path $output 'd3d12-evaluate-preset-11.stderr.log') -Raw
+                if ($stderr -match '(?m)^D4R_KERNEL_PROFILE .*serializing=1') { throw 'Unexpected serializing kernel profiler.' }
+                foreach ($layer in @('enc0','enc1','enc2','enc3','enc4','dec5','dec4','dec3','dec2','dec1','dec0')) {
+                    $pattern='(?m)^D4R_KERNEL_PROFILE(?:_INVALID)? kernel="dltss_pwin_' + $layer + '_layer" backend=native phase=main '
+                    $events=[regex]::Matches($stderr,$pattern)
+                    if ($events.Count -ne 3) { throw "Expected three collected $layer events for $variant-$mode, found $($events.Count)." }
+                }
+            }
+            if ($ProfileGpuBoundary -and $variant -eq 'async') {
+                $stdout=Get-Content -LiteralPath (Join-Path $output 'd3d12-evaluate-preset-11.stdout.log') -Raw
+                $timings=[regex]::Matches($stdout, '(?m)^D4R_GPU_BOUNDARY [^\r\n]*diagnostics_cpu_bytes=32 serializing=0\r?$')
+                if ($timings.Count -ne 3) { throw "Expected three completed GPU timing records for $variant-$mode, found $($timings.Count)." }
+            }
+        }
+        & python.exe (Join-Path $repo 'tools/windows/frame_compare.py') --reference (Join-Path $OutputDirectory "sync-$mode") --actual (Join-Path $OutputDirectory "async-$mode") --width $width --height $height --exact |
+            Tee-Object -FilePath (Join-Path $OutputDirectory "$mode-comparison.log")
+        if ($LASTEXITCODE) { throw "Async $mode output mismatch" }
+    }
+    @{passed=$true; architecture=$GpuArch; preset=11; resolution=$Resolution;
+        inputResolution=$InputResolution;
+        modes=@('burst','recreate'); framesPerMode=3; exactRgb=$true; gpuBoundaryTiming=[bool]$ProfileGpuBoundary;
+        deferredKernelTiming=[bool]$ProfileKernelsDeferred; batchInputs=[bool]$BatchInputCopies; pixelProfile=$PixelProfile} |
+        ConvertTo-Json | Set-Content -LiteralPath (Join-Path $OutputDirectory 'validation.json') -Encoding UTF8
+    Write-Host "PASS asynchronous K burst/recreate: $OutputDirectory"
+} finally {
+    foreach ($key in $old.Keys) { [Environment]::SetEnvironmentVariable($key,$old[$key],'Process') }
+}

scripts/windows/test-d3d12-command.ps1

@@ -0,0 +1,52 @@
+param(
+    [int]$Iterations = 32,
+    [switch]$NoHooks,
+    [switch]$SmallSeed,
+    [switch]$DebugLayer,
+    [switch]$Warp,
+    [switch]$NoHip,
+    [ValidateSet('basic','indirect','indirect-root-reset','initial-pso')][string]$Mode = 'indirect',
+    [string]$OutputDirectory = 'test-results/d3d12-command-development'
+)
+$ErrorActionPreference = 'Stop'
+$repo = (Resolve-Path "$PSScriptRoot/../..").Path
+Push-Location $repo
+$names = @('D4R_COMMAND_PROBE_NO_HOOKS','D4R_COMMAND_PROBE_SMALL_SEED','D4R_COMMAND_DEBUG_SDK','D4R_DIAG_DIR','D4R_COMMAND_PROBE_WARP','D4R_COMMAND_PROBE_NO_HIP')
+$saved = @{}
+foreach ($name in $names) { $saved[$name] = [Environment]::GetEnvironmentVariable($name,'Process') }
+try {
+    if ($Iterations -lt 1 -or $Iterations -gt 1024) { throw 'Iterations must be 1..1024' }
+    $cmake = "$repo/.tools/python/cmake/data/bin/cmake.exe"
+    $build = "$repo/build/windows-rdna4-therock"
+    $hip = "$repo/.tools/therock-10.2.0a20260929/_rocm_sdk_core"
+    $output = [IO.Path]::GetFullPath((Join-Path $repo $OutputDirectory))
+    New-Item -ItemType Directory -Force -Path $output | Out-Null
+    $target = 'd4r_d3d12_command_probe'
+    if ($DebugLayer) {
+        $sdk = "$repo/.tools/agility-1.619.5"
+        if (!(Test-Path "$sdk/build/native/bin/x64/d3d12SDKLayers.dll")) { throw 'Unpack Microsoft.Direct3D.D3D12 1.619.5 into .tools/agility-1.619.5 for this optional debug probe' }
+        & $cmake -S . -B $build "-DD4R_AGILITY_ROOT=$sdk" > "$output/configure.log"
+        if ($LASTEXITCODE) { throw 'Debug probe configuration failed' }
+        $target = 'd4r_d3d12_command_debug_probe'
+    }
+    & $cmake --build $build --target d4r_nvngx_windows $target > "$output/build.log"
+    if ($LASTEXITCODE) { throw "Build failed: $output/build.log" }
+    [Environment]::SetEnvironmentVariable($names[0], $(if ($NoHooks) { '1' } else { $null }), 'Process')
+    [Environment]::SetEnvironmentVariable($names[1], $(if ($SmallSeed) { '1' } else { $null }), 'Process')
+    [Environment]::SetEnvironmentVariable($names[2], $(if ($DebugLayer) { '1' } else { $null }), 'Process')
+    [Environment]::SetEnvironmentVariable($names[3], $output, 'Process')
+    [Environment]::SetEnvironmentVariable($names[4], $(if ($Warp) { '1' } else { $null }), 'Process')
+    [Environment]::SetEnvironmentVariable($names[5], $(if ($NoHip -or $Warp) { '1' } else { $null }), 'Process')
+    # PowerShell 5 treats native stderr as ErrorRecord: retain it without
+    # converting it into a terminating exception, then check the process code.
+    $ErrorActionPreference = 'Continue'
+    & "$build/$target.exe" --hip-root $hip --module "$build/d4r_nvngx.dll" --interop-mode $Mode --iterations $Iterations > "$output/stdout.log" 2> "$output/stderr.log"
+    $code = $LASTEXITCODE
+    $ErrorActionPreference = 'Stop'
+    Get-Content "$output/stdout.log", "$output/stderr.log" | Select-String 'D3D12_VALIDATION|DRED|DEVICE_REMOVED|PROBE_GPU|DIFFERENT|FAIL|PASS|installed'
+    Write-Host "D3D12 command diagnostic logs: $output"
+    if ($code) { throw "D3D12 probe exit=$code" }
+} finally {
+    foreach ($name in $names) { [Environment]::SetEnvironmentVariable($name,$saved[$name],'Process') }
+    Pop-Location
+}

scripts/windows/test-d4r-check.ps1

@@ -0,0 +1,122 @@
+# d4r-check.ps1 against fixture installs. No GPU, no NVIDIA binaries: the packaging test's
+# synthetic release is the install, a fake inventory file stands in for the GPU query, and
+# fixture text files stand in for the NVIDIA DLLs (pinned in a fixture dll-pins.txt).
+[CmdletBinding()]
+param([string]$OutputDirectory)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo ('test-results/d4r-check/'+(Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
+$OutputDirectory=[IO.Path]::GetFullPath($OutputDirectory)
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+& (Join-Path $PSScriptRoot 'test-windows-release-package.ps1') -OutputDirectory (Join-Path $OutputDirectory 'package') | Out-Null
+$release=Join-Path $OutputDirectory 'package/release'
+$check=Join-Path $repo 'scripts/windows/d4r-check.ps1'
+$powershell="$env:SystemRoot/System32/WindowsPowerShell/v1.0/powershell.exe"
+$results=@()
+function Sha([string]$path) { (Get-FileHash -LiteralPath $path -Algorithm SHA256).Hash }
+function Set-ManifestHash([string]$game,[string]$relative) {
+    $path=Join-Path $game 'd4r/package.json'
+    $manifest=Get-Content -LiteralPath $path -Raw | ConvertFrom-Json
+    foreach ($entry in $manifest.files) { if ($entry.path -eq $relative) { $entry.sha256=Sha (Join-Path $game ($relative -replace '/','\')) } }
+    $manifest | ConvertTo-Json -Depth 8 | Set-Content -LiteralPath $path -Encoding UTF8
+}
+function New-Install([string]$name) {
+    $game=Join-Path $OutputDirectory "cases/$name"
+    New-Item -ItemType Directory -Force (Split-Path $game) | Out-Null
+    Copy-Item -LiteralPath $release -Destination $game -Recurse
+    Set-Content -LiteralPath (Join-Path $game 'Game.exe') 'fixture' -Encoding ASCII
+    Set-Content -LiteralPath (Join-Path $game 'd4r/nvngx_dlss.dll') 'fixture dlss' -Encoding ASCII
+    Set-Content -LiteralPath (Join-Path $game 'd4r/ngx/_nvngx.dll') 'fixture core' -Encoding ASCII
+    $unrelated=('B'*64)
+    @('# fixture pins',
+      "dlss $(Sha (Join-Path $game 'd4r/nvngx_dlss.dll')) 310.9.1 validated",
+      "dlss $unrelated 310.7.0 unvalidated",
+      "ngx $(Sha (Join-Path $game 'd4r/ngx/_nvngx.dll')) 32.0.16.1714 validated") |
+        Set-Content -LiteralPath (Join-Path $game 'd4r/dll-pins.txt') -Encoding ASCII
+    Set-ManifestHash $game 'd4r/dll-pins.txt'
+    return $game
+}
+function Write-Inventory([string]$name,[string]$arch,[string]$gpu='AMD Radeon RX 7700 XT') {
+    $path=Join-Path $OutputDirectory "inventory-$name.json"
+    @{devices=@(@{name=$gpu; architecture=$arch; wavefrontSize=32})} | ConvertTo-Json -Depth 4 | Set-Content -LiteralPath $path -Encoding UTF8
+    return $path
+}
+function Run-Check([string]$game,[string]$inventory,[string[]]$More=@()) {
+    $ErrorActionPreference='Continue' # native stderr must not become a terminating error
+    $text=& $powershell -NoProfile -ExecutionPolicy Bypass -File (Join-Path $game 'd4r/d4r-check.ps1') -GameFolder $game -InventoryFile $inventory @More 2>&1 | Out-String
+    return @{exit=$LASTEXITCODE; text=$text}
+}
+function Expect([string]$case,$run,[int]$exit,[string[]]$patterns) {
+    if ($run.exit -ne $exit) { throw "$case : exit $($run.exit), expected $exit`n$($run.text)" }
+    foreach ($pattern in $patterns) { if ($run.text -notmatch $pattern) { throw "$case : output lacks /$pattern/`n$($run.text)" } }
+    $script:results+=@{case=$case; passed=$true; gpuKernelsExecuted=$false}
+}
+
+# 1. Healthy install.
+$game=New-Install 'healthy'; $inv=Write-Inventory 'a' 'gfx1101'
+Expect 'healthy-install' (Run-Check $game $inv) 0 @('ok\s+d4r\\nvngx_dlss\.dll \(nvngx_dlss\.dll 310\.9\.1, tested on Windows\)','ok\s+d4r\\ngx\\_nvngx\.dll',
+    'ok\s+GPU AMD Radeon RX 7700 XT \(gfx1101\): build present, 16 native kernels','ok\s+all 17 GPU code objects are built for gfx1101',
+    'ok\s+no vkd3d/Wine d3d12\.dll','ok\s+d4r\.ini is valid \(model K\)','compile-tested','Everything d4r needs is in place')
+
+# 2. NVIDIA DLL problems, each with the fix.
+$game=New-Install 'dll-missing'; Remove-Item -LiteralPath (Join-Path $game 'd4r/nvngx_dlss.dll')
+Expect 'dll-missing' (Run-Check $game $inv) 1 @("MISSING\s+d4r\\nvngx_dlss\.dll: copy NVIDIA's nvngx_dlss\.dll here \(version 310\.9\.1 or 310\.7\.0","1 thing\(s\) to fix")
+$game=New-Install 'dll-wrong'; Set-Content -LiteralPath (Join-Path $game 'd4r/nvngx_dlss.dll') 'some other version' -Encoding ASCII
+Expect 'dll-wrong-version' (Run-Check $game $inv) 1 @('MISSING\s+d4r\\nvngx_dlss\.dll is version \S+, which d4r does not accept\. d4r on Windows needs exactly 310\.9\.1 or 310\.7\.0')
+$game=New-Install 'dll-less-tested'; Set-Content -LiteralPath (Join-Path $game 'd4r/nvngx_dlss.dll') 'fixture dlss 310.7' -Encoding ASCII
+@('dlss '+(Sha (Join-Path $game 'd4r/nvngx_dlss.dll'))+' 310.7.0 unvalidated','ngx '+(Sha (Join-Path $game 'd4r/ngx/_nvngx.dll'))+' 32.0.16.1714 validated') | Set-Content -LiteralPath (Join-Path $game 'd4r/dll-pins.txt') -Encoding ASCII
+Set-ManifestHash $game 'd4r/dll-pins.txt'
+Expect 'dll-less-tested-accepted' (Run-Check $game $inv) 0 @('ok\s+d4r\\nvngx_dlss\.dll \(nvngx_dlss\.dll 310\.7\.0\)','note\s+nvngx_dlss\.dll 310\.7\.0 is accepted but has had less Windows testing')
+
+# 3. Leftovers, edited files, a replaced dxgi.dll, and a broken OptiScaler.ini.
+$game=New-Install 'vkd3d'; Set-Content -LiteralPath (Join-Path $game 'd3d12.dll') 'vkd3d-proton fixture' -Encoding ASCII
+Expect 'vkd3d-proxy' (Run-Check $game $inv) 1 @('MISSING\s+d3d12\.dll in the game folder is vkd3d-proton/Wine')
+$game=New-Install 'dxgi-replaced'; Set-Content -LiteralPath (Join-Path $game 'dxgi.dll') 'another dxgi' -Encoding ASCII
+Expect 'foreign-dxgi' (Run-Check $game $inv) 0 @('note\s+dxgi\.dll is not the one that came with d4r')
+$game=New-Install 'opti-path'; (Get-Content -LiteralPath (Join-Path $game 'OptiScaler.ini')) -replace '^NvngxPath=.*$','NvngxPath=nowhere' | Set-Content -LiteralPath (Join-Path $game 'OptiScaler.ini') -Encoding ASCII
+Expect 'optiscaler-ini-path' (Run-Check $game $inv) 1 @('MISSING\s+OptiScaler\.ini NvngxPath = nowhere does not hold _nvngx\.dll')
+
+# 4. d4r.ini mistakes are notes with what will happen instead.
+$game=New-Install 'ini'; Set-Content -LiteralPath (Join-Path $game 'd4r/d4r.ini') "[DLSS]`nModel = E`nShowWatermark = sometimes`n[Latency]`nFrameAge = 1`n[Debug]`nLog = loud`n" -Encoding ASCII
+Expect 'ini-mistakes' (Run-Check $game $inv) 0 @("note\s+d4r\.ini: \[DLSS\] Model 'E' is not available on Windows",'must be true or false, not ''sometimes''','\[Latency\] FrameAge is not a Windows setting','Log must be normal or verbose')
+
+# 5. GPU cases.
+$game=New-Install 'gpu-no-build'; Remove-Item -LiteralPath (Join-Path $game 'd4r/_nvngx_gfx1103.dll')
+Expect 'gpu-without-build' (Run-Check $game (Write-Inventory 'b' 'gfx1103' 'AMD Radeon 780M')) 1 @('MISSING\s+GPU AMD Radeon 780M \(gfx1103\): this release has no complete build for it \(missing: d4r\\_nvngx_gfx1103\.dll\)')
+$game=New-Install 'gpu-rdna2'
+Expect 'gpu-unsupported' (Run-Check $game (Write-Inventory 'c' 'gfx1030' 'AMD Radeon RX 6800')) 1 @('MISSING\s+no supported RDNA3/RDNA4 GPU found by the AMD runtime\. It sees: AMD Radeon RX 6800 \(gfx1030\)')
+$game=New-Install 'gpu-wrong-object'
+$other=@(Get-ChildItem -LiteralPath (Join-Path $game 'd4r/native/gfx1100') -Filter '*.hsaco')[0].FullName
+Copy-Item -LiteralPath $other -Destination (Join-Path $game 'd4r/native/gfx1101/kernel3.hsaco') -Force
+Expect 'code-object-for-another-gpu' (Run-Check $game $inv) 1 @('MISSING\s+kernel3\.hsaco is not built for gfx1101','differs from the release')
+
+# 6. What the last game start said, and the bug-report ZIP.
+$game=New-Install 'log-failure'
+Set-Content -LiteralPath (Join-Path $game 'd4r/d4r_nvngx.log') "d4r: DLSS disabled: Wrong nvngx_dlss.dll: you have version 1.2.3.4" -Encoding ASCII
+Expect 'log-reports-failure' (Run-Check $game $inv) 1 @('MISSING\s+last game start: DLSS disabled: Wrong nvngx_dlss\.dll')
+$game=New-Install 'log-ok'
+Set-Content -LiteralPath (Join-Path $game 'd4r/d4r_nvngx.log') "d4r: player mode, model=K validate=0 async=0 log=normal, architecture=gfx1101" -Encoding ASCII
+Expect 'log-reports-ok' (Run-Check $game $inv) 0 @('ok\s+last game start: player mode, model=K')
+$game=New-Install 'report'; $reportDir=Join-Path $OutputDirectory 'reports'; New-Item -ItemType Directory -Force $reportDir | Out-Null
+Set-Content -LiteralPath (Join-Path $game 'd4r/d4r_nvngx.log') "d4r: DLSS disabled: test failure" -Encoding ASCII
+$run=Run-Check $game $inv @('-Report','-ReportDirectory',$reportDir)
+$zip=@(Get-ChildItem -LiteralPath $reportDir -Filter 'd4r-report-*.zip')
+if ($zip.Count -ne 1) { throw "Expected one report ZIP.`n$($run.text)" }
+Add-Type -AssemblyName System.IO.Compression.FileSystem
+$archive=[IO.Compression.ZipFile]::OpenRead($zip[0].FullName)
+try { $names=@($archive.Entries | ForEach-Object { $_.Name }) } finally { $archive.Dispose() }
+foreach ($required in @('check.txt','d4r_nvngx.log','d4r.ini','OptiScaler.ini','files.sha256.txt','gpu-inventory.json')) { if ($names -notcontains $required) { throw "Report lacks $required (has: $($names -join ', '))" } }
+if ($names -contains 'nvngx_dlss.dll' -or $names -contains '_nvngx.dll') { throw 'The report must never contain NVIDIA DLLs.' }
+if ($run.text -notmatch 'Bug report written') { throw 'Report location was not printed.' }
+$results+=@{case='bug-report-zip'; passed=$true; entries=$names}
+
+# 7. No d4r folder at all.
+$empty=Join-Path $OutputDirectory 'cases/empty'; New-Item -ItemType Directory -Force $empty | Out-Null
+$ErrorActionPreference='Continue'
+$text=& $powershell -NoProfile -ExecutionPolicy Bypass -File $check -GameFolder $empty 2>&1 | Out-String
+$exitEmpty=$LASTEXITCODE; $ErrorActionPreference='Stop'
+if ($exitEmpty -ne 1 -or $text -notmatch 'no d4r folder here') { throw "A folder without d4r must be reported.`n$text" }
+$results+=@{case='no-d4r-folder'; passed=$true}
+
+$results | ConvertTo-Json -Depth 4 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'summary.json') -Encoding UTF8
+Write-Host "PASS D4R_CHECK cases=$($results.Count) Report: $OutputDirectory"

scripts/windows/test-deferred-kernel-profile.ps1

@@ -0,0 +1,103 @@
+[CmdletBinding()]
+param([string]$ZludaRoot, [string]$PackageRoot, [string]$HipRoot, [string]$OutputDirectory)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$ZludaRoot) { $ZludaRoot = Join-Path $repo 'dist/zluda-windows-deferred-profile' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-command-list' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$HipRoot) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/deferred-profile-' + (Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$settings = @{
+    D4R_ZLUDA_PROFILE=$null; D4R_ZLUDA_PROFILE_DEFERRED='1'; D4R_ZLUDA_PROFILE_EVERY='1';
+    D4R_ZLUDA_PROFILE_ALLOW_LEGACY=$null;
+    D4R_DIAG_NONBLOCKING_STREAM='1'; D4R_DIAG_QUEUE_PTX=$null;
+    D4R_DIAG_DIR=$OutputDirectory;
+    ZLUDA_CACHE_DIR=(Join-Path $repo 'build/zluda-cache-windows');
+    PATH=((Join-Path $HipRoot 'bin') + ';' + $ZludaRoot + ';' + $env:PATH)
+}
+$old=@{}; $cases=@()
+function RunProbe([string[]]$Arguments, [string]$Stdout, [string]$Stderr) {
+    $info=[Diagnostics.ProcessStartInfo]::new()
+    $info.FileName=Join-Path $PackageRoot 'bin/d4r_cuda_driver_probe.exe'
+    $info.Arguments=$Arguments -join ' '
+    $info.UseShellExecute=$false; $info.CreateNoWindow=$true
+    $info.RedirectStandardOutput=$true; $info.RedirectStandardError=$true
+    $p=[Diagnostics.Process]::new(); $p.StartInfo=$info
+    $outFile=$null; $errFile=$null; $outTask=$null; $errTask=$null
+    try {
+        if (!$p.Start()) { throw 'Could not launch the CUDA diagnostic.' }
+        $outFile=[IO.File]::Open($Stdout,[IO.FileMode]::Create,[IO.FileAccess]::Write,[IO.FileShare]::Read)
+        $errFile=[IO.File]::Open($Stderr,[IO.FileMode]::Create,[IO.FileAccess]::Write,[IO.FileShare]::Read)
+        $outTask=$p.StandardOutput.BaseStream.CopyToAsync($outFile)
+        $errTask=$p.StandardError.BaseStream.CopyToAsync($errFile)
+        $timer=[Diagnostics.Stopwatch]::StartNew()
+        while (!$p.WaitForExit(1000)) {
+            if ($timer.Elapsed.TotalSeconds -ge 120) { throw "CUDA diagnostic timed out; logs: $OutputDirectory" }
+        }
+        $p.WaitForExit()
+        [void]$outTask.GetAwaiter().GetResult(); [void]$errTask.GetAwaiter().GetResult()
+        return $p.ExitCode
+    } finally {
+        if (!$p.HasExited) { $p.Kill(); $p.WaitForExit() }
+        if ($outTask) { try { [void]$outTask.GetAwaiter().GetResult() } catch {} }
+        if ($errTask) { try { [void]$errTask.GetAwaiter().GetResult() } catch {} }
+        if ($outFile) { $outFile.Dispose() }; if ($errFile) { $errFile.Dispose() }
+        $p.Dispose()
+    }
+}
+try {
+    foreach ($key in $settings.Keys) {
+        $old[$key]=[Environment]::GetEnvironmentVariable($key,'Process')
+        [Environment]::SetEnvironmentVariable($key,$settings[$key],'Process')
+    }
+    foreach ($context in @('primary','created')) {
+        foreach ($queued in @($false,$true)) {
+            $name="$context-$(if ($queued) { 'queued' } else { 'single' })"
+            [Environment]::SetEnvironmentVariable('D4R_DIAG_QUEUE_PTX', $(if ($queued) { '1' } else { $null }), 'Process')
+            $iterations=129
+            $stdout=Join-Path $OutputDirectory "$name.stdout.log"
+            $stderr=Join-Path $OutputDirectory "$name.stderr.log"
+            # Native Windows argument parsing: quote absolute paths explicitly.
+            $arguments=@('--hip-root', ('"' + $HipRoot + '"'), '--cuda-dll', ('"' + (Join-Path $ZludaRoot 'nvcuda.dll') + '"'),
+                         '--context', $context, '--iterations', "$iterations")
+            $exitCode=RunProbe $arguments $stdout $stderr
+            if ($exitCode) { throw "$name failed ($exitCode); logs: $OutputDirectory" }
+            $out=Get-Content -LiteralPath $stdout -Raw
+            $err=Get-Content -LiteralPath $stderr -Raw
+            if ($out -notmatch "PASS CUDA architecture=$GpuArch" -or $out -notmatch 'guard_verified=1') { throw "$name did not verify PTX output" }
+            $records=[regex]::Matches($err, '(?m)^D4R_KERNEL_PROFILE kernel="d4r_ptx_pattern" [^\r\n]*serializing=0 deferred=1 [^\r\n]+')
+            $invalid=[regex]::Matches($err, '(?m)^D4R_KERNEL_PROFILE_INVALID kernel="d4r_ptx_pattern" [^\r\n]*reason=invalid_elapsed_time serializing=0 deferred=1 [^\r\n]+')
+            if ($records.Count + $invalid.Count -ne $iterations -or $err -match 'serializing=1|D4R_KERNEL_PROFILE_SKIPPED') {
+                throw "$name expected $iterations collected deferred records, found $($records.Count) valid / $($invalid.Count) invalid"
+            }
+            foreach ($record in $records) {
+                if ($record.Value -notmatch 'gpu_ms=([0-9.]+)') {
+                    throw "$name contains an invalid GPU time"
+                }
+                $gpuMs=[double]::Parse($Matches[1], [Globalization.CultureInfo]::InvariantCulture)
+                if ([double]::IsNaN($gpuMs) -or [double]::IsInfinity($gpuMs)) { throw "$name contains an invalid GPU time" }
+            }
+            $cases += @{context=$context; queued=$queued; launches=$iterations; collected=($records.Count+$invalid.Count);
+                validTimings=$records.Count; invalidTimings=$invalid.Count; exitCode=$exitCode}
+            Write-Host "PASS ${name}: $($records.Count) valid / $($invalid.Count) invalid deferred timings; exact PTX output and guards"
+        }
+    }
+    # Legacy default-stream timing markers would add stream dependencies.
+    [Environment]::SetEnvironmentVariable('D4R_DIAG_NONBLOCKING_STREAM',$null,'Process')
+    [Environment]::SetEnvironmentVariable('D4R_DIAG_QUEUE_PTX',$null,'Process')
+    $stdout=Join-Path $OutputDirectory 'default-stream.stdout.log'; $stderr=Join-Path $OutputDirectory 'default-stream.stderr.log'
+    $arguments=@('--hip-root', ('"' + $HipRoot + '"'), '--cuda-dll', ('"' + (Join-Path $ZludaRoot 'nvcuda.dll') + '"'), '--iterations', '3')
+    $exitCode=RunProbe $arguments $stdout $stderr
+    $out=Get-Content -LiteralPath $stdout -Raw; $err=Get-Content -LiteralPath $stderr -Raw
+    if ($exitCode -or $out -notmatch "PASS CUDA architecture=$GpuArch" -or
+        $err -notmatch 'reason=legacy_default_stream' -or $err -match '(?m)^D4R_KERNEL_PROFILE ') {
+        throw 'Default-stream diagnostics did not safely skip timing events.'
+    }
+    @{passed=$true; architecture=$GpuArch; cases=$cases; defaultStreamSkipped=$true; addedCompletionWaits=0} |
+        ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'validation.json') -Encoding UTF8
+    Write-Host "PASS deferred kernel profiling: $OutputDirectory"
+} finally {
+    foreach ($key in $old.Keys) { [Environment]::SetEnvironmentVariable($key,$old[$key],'Process') }
+}

scripts/windows/test-game-summary.ps1

@@ -0,0 +1,38 @@
+[CmdletBinding()]
+param([string]$LogRoot, [string]$OutputDirectory)
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'game-summary.ps1')
+$cases=@(
+    @{name='empty-streams-debugger-refused'; stdout=''; stderr=''; debugger='EXIT code=0xdeadc0de'; session='process-failed-before-dlss-frames'},
+    @{name='launcher-exit'; stdout=''; stderr=''; debugger='EXIT code=0x0'; session='process-exited-without-dlss-frames'},
+    @{name='feature-not-found'; stdout='D4R_CAPABILITIES available=0 feature_init=0xbad00004 needs_driver=0'; stderr='D4R_WINDOWS_FAILURE unavailable'; debugger='EXIT code=0xc0000409'; session='ngx-feature-not-found'},
+    @{name='complete-frame'; stdout="D4R_FRAME cpu_frame_copies=0 frame_age=0 interop_ngx_ms=12.4`nD4R_OUTPUT_VALIDATION elements=3 nan=0 inf=0 diagnostics_cpu_bytes=8";
+        stderr='[d4r-launch] kernel="dltss_pwin_enc0_layer" backend=native'; debugger='EXIT code=0x0'; session='completed-dlss-frames'},
+    @{name='truncated-frame'; stdout='D4R_FRAME cpu_frame_copies=0 frame_age=0 interop_ngx_ms='; stderr=''; debugger=''; session='diagnostic-timeout-without-dlss-frames'}
+)
+$results=@()
+foreach ($case in $cases) {
+    $summary=Get-D4RGameSummary -Stdout $case.stdout -Stderr $case.stderr -Debugger $case.debugger
+    if ($summary.session -ne $case.session) { throw "Wrong session classification: $($case.name)" }
+    if ($case.name -eq 'complete-frame') {
+        if ($summary.completedFrames -ne 1 -or $summary.outputGpuChecks -ne 1 -or $summary.nativeLaunches -ne 1 -or
+            $summary.nonfiniteOutputs -or $summary.previousFrameOutputs -or $summary.cpuImageCopyFrames) { throw 'Complete frame counters are wrong.' }
+    } elseif ($summary.completedFrames -ne 0) { throw 'A failed or incomplete run was counted as a frame.' }
+    $results+=@{case=$case.name; passed=$true; summary=$summary}
+}
+if ($LogRoot) {
+    foreach ($entry in @{ 'acbf-k'='process-failed-before-dlss-frames'; 'cyberpunk-k'='ngx-feature-not-found';
+            'cyberpunk-m'='ngx-feature-not-found'; 'sm2-k'='process-exited-without-dlss-frames' }.GetEnumerator()) {
+        $dir=Get-ChildItem -LiteralPath (Join-Path $LogRoot $entry.Key) -Directory | Select-Object -First 1
+        $summary=Get-D4RGameSummary -Stdout ([IO.File]::ReadAllText((Join-Path $dir.FullName 'd4r.stdout.log'))) `
+            -Stderr ([IO.File]::ReadAllText((Join-Path $dir.FullName 'd4r.stderr.log'))) `
+            -Debugger ([IO.File]::ReadAllText((Join-Path $dir.FullName 'debugger.log')))
+        if ($summary.session -ne $entry.Value -or $summary.completedFrames -ne 0 -or $summary.nativeLaunches -ne 0) { throw "Unexpected classification for actual report $($entry.Key)" }
+        $results+=@{case='issue-10-'+$entry.Key; passed=$true; summary=$summary}
+    }
+}
+if ($OutputDirectory) {
+    New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+    $results | ConvertTo-Json -Depth 8 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'summary-parser.json') -Encoding UTF8
+}
+Write-Host "PASS GAME_SUMMARY cases=$($results.Count)"

scripts/windows/test-gpu-target-contract.ps1

@@ -0,0 +1,23 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$PackageRoot, [Parameter(Mandatory=$true)][string]$CodeObject)
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$target=Get-D4RGpuTarget $PackageRoot $null
+$other=if ($target -eq 'gfx1201') { 'gfx1200' } else { 'gfx1201' }
+function Expect-Rejection([scriptblock]$Action) {
+    $rejected=$false
+    try { & $Action | Out-Null } catch { $rejected=$true }
+    if (!$rejected) { throw 'GPU target contract accepted incompatible input.' }
+}
+if ((Get-D4RGpuTarget $PackageRoot $target) -ne $target) { throw 'Incorrect package target.' }
+Assert-D4RCodeObjectTarget $CodeObject $target
+Expect-Rejection { Get-D4RGpuTarget $PackageRoot $other }
+Expect-Rejection { Get-D4RGpuTarget $PackageRoot 'gfx1250' }
+Expect-Rejection { Assert-D4RCodeObjectTarget $CodeObject $other }
+Expect-Rejection { Assert-D4RCodeObjectTarget (Join-Path $PackageRoot 'gpu-target.json') $target }
+# Old packages had no target metadata and were gfx1201 only.
+$legacy=Join-Path $PackageRoot '__no-target-metadata__'
+if (Test-Path -LiteralPath (Join-Path $legacy 'gpu-target.json')) { throw 'Unexpected legacy test fixture.' }
+if ((Get-D4RGpuTarget $legacy $null) -ne 'gfx1201') { throw 'Legacy target changed.' }
+Expect-Rejection { Get-D4RGpuTarget $legacy 'gfx1200' }
+Write-Host "PASS GPU_TARGET_SCRIPT target=$target rejected=5 hardware_executed=0"

scripts/windows/test-k-captures.ps1

@@ -0,0 +1,54 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$CaptureDirectory, [string]$HipRoot,
+    [string]$PackageRoot, [string]$OutputDirectory, [int]$Windows = 12,
+    [Parameter(Mandatory=$true)][string]$DlssDll, [int]$PtxWindows = 2)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-therock' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/k-real-reference-' + (Get-Date -Format 'yyyyMMdd-HHmmss')) }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$previousPython = $env:PYTHONPATH
+$previousDiag = $env:D4R_DIAG_DIR
+$env:PYTHONPATH = "$(Join-Path $repo '.tools/python/vendor');$previousPython"
+$summary = [ordered]@{utc=[DateTime]::UtcNow.ToString('o'); captureDirectory=$CaptureDirectory; layers=@(); passed=$false}
+try {
+    foreach ($layer in @('enc0','enc1','enc2','enc3','enc4','dec5','dec4','dec3','dec2','dec1','dec0')) {
+        $name = "dltss_pwin_${layer}_layer"
+        $captures = @(Get-ChildItem -LiteralPath $CaptureDirectory -Directory | Where-Object Name -Match ("^replay-[0-9]+-" + $name + '$'))
+        if (!$captures.Count) { throw "Missing actual K capture: $name" }
+        $capture = $captures | Sort-Object Name | Select-Object -First 1
+        $folder = Join-Path $OutputDirectory $layer
+        $output = Join-Path $folder 'output'
+        New-Item -ItemType Directory -Force $folder | Out-Null
+        $env:D4R_DIAG_DIR = $folder
+        & (Join-Path $PackageRoot 'bin/d4r_native_replay_probe.exe') --hip-root $HipRoot `
+            --module (Join-Path $PackageRoot "experimental/k/${name}_${GpuArch}.hsaco") `
+            --fixture-dir $capture.FullName --output-dir $output --iterations 1 `
+            > (Join-Path $folder 'gpu.stdout.log') 2> (Join-Path $folder 'gpu.stderr.log')
+        if ($LASTEXITCODE) { throw "K $layer actual GPU replay failed: $folder" }
+        & python (Join-Path $PackageRoot 'k_replay_validate.py') validate --layer $layer `
+            --fixture-dir $capture.FullName --output-dir $output --windows $Windows --real-capture `
+            > (Join-Path $folder 'reference.stdout.log') 2> (Join-Path $folder 'reference.stderr.log')
+        if ($LASTEXITCODE) { throw "K $layer mismatch; stopping before the next layer: $folder" }
+        Get-Content -LiteralPath (Join-Path $folder 'reference.stdout.log') | Write-Host
+        $ptxValidator = Join-Path $PackageRoot 'k_ptx_validate.py'
+        if (!(Test-Path -LiteralPath $ptxValidator)) { $ptxValidator = Join-Path $repo 'tools/windows/k_ptx_validate.py' }
+        & python -u $ptxValidator --layer $layer `
+            --capture-dir $capture.FullName --native-dir $output --dlss-dll $DlssDll `
+            --output-dir (Join-Path $folder 'private-ptx') --windows $PtxWindows `
+            > (Join-Path $folder 'ptx-reference.stdout.log') 2> (Join-Path $folder 'ptx-reference.stderr.log')
+        if ($LASTEXITCODE) { throw "K $layer independent PTX mismatch; stopping: $folder" }
+        Get-Content -LiteralPath (Join-Path $folder 'ptx-reference.stdout.log') | Write-Host
+        $summary.layers += @{layer=$layer; passed=$true}
+    }
+    $summary.passed = $true
+} catch { $summary.error=$_.Exception.Message; Write-Warning $summary.error }
+finally {
+    $env:PYTHONPATH = $previousPython; $env:D4R_DIAG_DIR = $previousDiag
+    $summary | ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'summary.json') -Encoding UTF8
+    Write-Host "Private real-weight replay results: $OutputDirectory (do not redistribute captures/allocations)"
+}
+if (!$summary.passed) { exit 1 }

scripts/windows/test-k-replay.ps1

@@ -0,0 +1,55 @@
+[CmdletBinding()]
+param(
+    [string]$HipRoot,
+    [string]$PackageRoot,
+    [string]$OutputDirectory,
+    [string[]]$Layers = @('enc0','enc1','enc2','enc3','enc4','dec5','dec4','dec3','dec2','dec1','dec0'),
+    [int]$Iterations = 32
+)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-therock' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/k-replay-' + (Get-Date -Format 'yyyyMMdd-HHmmss')) }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$previousPython = $env:PYTHONPATH
+$previousDiag = $env:D4R_DIAG_DIR
+$env:PYTHONPATH = "$(Join-Path $repo '.tools/python/vendor');$previousPython"
+$summary = [ordered]@{utc=[DateTime]::UtcNow.ToString('o'); hipRoot=$HipRoot; architecture=$GpuArch; layers=@(); passed=$false}
+try {
+    if ($Iterations -lt 1 -or $Iterations -gt 10000) { throw 'Iterations must be 1..10000' }
+    foreach ($layer in $Layers) {
+        if ($layer -notmatch '^(enc[0-4]|dec[0-5])$') { throw "Invalid K layer $layer" }
+        $folder = Join-Path $OutputDirectory $layer
+        $fixture = Join-Path $folder 'fixture'
+        $output = Join-Path $folder 'output'
+        New-Item -ItemType Directory -Force $folder | Out-Null
+        $env:D4R_DIAG_DIR = $folder
+        & python (Join-Path $PackageRoot 'k_replay_validate.py') generate --layer $layer --fixture-dir $fixture `
+            > (Join-Path $folder 'fixture.stdout.log') 2> (Join-Path $folder 'fixture.stderr.log')
+        if ($LASTEXITCODE) { throw "K $layer fixture generation failed; see $folder" }
+        & (Join-Path $PackageRoot 'bin/d4r_native_replay_probe.exe') --hip-root $HipRoot `
+            --module (Join-Path $PackageRoot "experimental/k/dltss_pwin_${layer}_layer_${GpuArch}.hsaco") `
+            --fixture-dir $fixture --output-dir $output --iterations $Iterations `
+            > (Join-Path $folder 'gpu.stdout.log') 2> (Join-Path $folder 'gpu.stderr.log')
+        if ($LASTEXITCODE) { throw "K $layer GPU replay failed; see $folder" }
+        & python (Join-Path $PackageRoot 'k_replay_validate.py') validate --layer $layer --fixture-dir $fixture --output-dir $output `
+            > (Join-Path $folder 'reference.stdout.log') 2> (Join-Path $folder 'reference.stderr.log')
+        if ($LASTEXITCODE) { throw "K $layer reference mismatch; stopping before the next layer. See $folder" }
+        Get-Content -LiteralPath (Join-Path $folder 'reference.stdout.log') | Write-Host
+        $summary.layers += @{layer=$layer; passed=$true; iterations=$Iterations}
+    }
+    $summary.passed = $true
+} catch {
+    $summary.error = $_.Exception.Message
+    Write-Warning $summary.error
+} finally {
+    $env:PYTHONPATH = $previousPython
+    $env:D4R_DIAG_DIR = $previousDiag
+    $summary | ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'summary.json') -Encoding UTF8
+    Compress-Archive -LiteralPath $OutputDirectory -DestinationPath "$OutputDirectory.zip" -Force
+    Write-Host "K replay bundle: $OutputDirectory.zip"
+}
+if (!$summary.passed) { exit 1 }

scripts/windows/test-m-captures.ps1

@@ -0,0 +1,51 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$CaptureDirectory, [string]$HipRoot,
+    [string]$PackageRoot, [string]$OutputDirectory, [int]$Blocks = 12,
+    [Parameter(Mandatory=$true)][string]$DlssDll, [int]$PtxBlocks = 2)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-therock' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/m-real-reference-' + (Get-Date -Format 'yyyyMMdd-HHmmss')) }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$previousPython=$env:PYTHONPATH; $previousDiag=$env:D4R_DIAG_DIR
+$env:PYTHONPATH = "$(Join-Path $repo '.tools/python/vendor');$previousPython"
+$summary = [ordered]@{utc=[DateTime]::UtcNow.ToString('o'); captureDirectory=$CaptureDirectory; layers=@(); passed=$false}
+try {
+    foreach ($layer in @('enc1','enc2','enc3_tube','dec2','dec1')) {
+        $name = "rrlite_${layer}_4x4"
+        $captures = @(Get-ChildItem -LiteralPath $CaptureDirectory -Directory | Where-Object Name -Match ("^replay-[0-9]+-" + $name + '$'))
+        if (!$captures.Count) { throw "Missing actual M capture: $name" }
+        $capture = $captures | Sort-Object Name | Select-Object -First 1
+        $folder = Join-Path $OutputDirectory $layer
+        $output = Join-Path $folder 'output'
+        New-Item -ItemType Directory -Force $folder | Out-Null
+        $env:D4R_DIAG_DIR = $folder
+        & (Join-Path $PackageRoot 'bin/d4r_native_replay_probe.exe') --hip-root $HipRoot `
+            --module (Join-Path $PackageRoot "experimental/m/${name}_${GpuArch}.hsaco") `
+            --fixture-dir $capture.FullName --output-dir $output --iterations 1 `
+            > (Join-Path $folder 'gpu.stdout.log') 2> (Join-Path $folder 'gpu.stderr.log')
+        if ($LASTEXITCODE) { throw "M $layer actual GPU replay failed: $folder" }
+        & python (Join-Path $PackageRoot 'm_replay_validate.py') validate --layer $layer `
+            --fixture-dir $capture.FullName --output-dir $output --blocks $Blocks --real-capture `
+            > (Join-Path $folder 'reference.stdout.log') 2> (Join-Path $folder 'reference.stderr.log')
+        if ($LASTEXITCODE) { throw "M $layer mismatch; stopping before the next layer: $folder" }
+        Get-Content -LiteralPath (Join-Path $folder 'reference.stdout.log') | Write-Host
+        & python -u (Join-Path $PackageRoot 'm_ptx_validate.py') --layer $layer `
+            --capture-dir $capture.FullName --native-dir $output --dlss-dll $DlssDll `
+            --output-dir (Join-Path $folder 'private-ptx') --blocks $PtxBlocks `
+            > (Join-Path $folder 'ptx-reference.stdout.log') 2> (Join-Path $folder 'ptx-reference.stderr.log')
+        if ($LASTEXITCODE) { throw "M $layer independent PTX mismatch; stopping: $folder" }
+        Get-Content -LiteralPath (Join-Path $folder 'ptx-reference.stdout.log') | Write-Host
+        $summary.layers += @{layer=$layer; passed=$true}
+    }
+    $summary.passed=$true
+} catch { $summary.error=$_.Exception.Message; Write-Warning $summary.error }
+finally {
+    $env:PYTHONPATH=$previousPython; $env:D4R_DIAG_DIR=$previousDiag
+    $summary | ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'summary.json') -Encoding UTF8
+    Write-Host "Private real-weight replay results: $OutputDirectory (do not redistribute captures/allocations)"
+}
+if (!$summary.passed) { exit 1 }

scripts/windows/test-m-replay.ps1

@@ -0,0 +1,47 @@
+[CmdletBinding()]
+param([string]$HipRoot, [string]$PackageRoot, [string]$OutputDirectory,
+    [string[]]$Layers = @('enc1','enc2','enc3_tube','dec2','dec1'),
+    [ValidateRange(1,10000)][int]$Iterations = 32)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-therock' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/m-replay-' + (Get-Date -Format 'yyyyMMdd-HHmmss')) }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$previousPython = $env:PYTHONPATH
+$previousDiag = $env:D4R_DIAG_DIR
+$env:PYTHONPATH = "$(Join-Path $repo '.tools/python/vendor');$previousPython"
+$summary = [ordered]@{utc=[DateTime]::UtcNow.ToString('o'); hipRoot=$HipRoot; architecture=$GpuArch; layers=@(); passed=$false}
+try {
+    foreach ($layer in $Layers) {
+        if ($layer -notmatch '^(enc[12]|enc3_tube|dec[12])$') { throw "Invalid M layer $layer" }
+        $folder = Join-Path $OutputDirectory $layer
+        $fixture = Join-Path $folder 'fixture'
+        $output = Join-Path $folder 'output'
+        New-Item -ItemType Directory -Force $folder | Out-Null
+        $env:D4R_DIAG_DIR = $folder
+        & python (Join-Path $PackageRoot 'm_replay_validate.py') generate --layer $layer --fixture-dir $fixture `
+            > (Join-Path $folder 'fixture.stdout.log') 2> (Join-Path $folder 'fixture.stderr.log')
+        if ($LASTEXITCODE) { throw "M $layer fixture generation failed: $folder" }
+        & (Join-Path $PackageRoot 'bin/d4r_native_replay_probe.exe') --hip-root $HipRoot `
+            --module (Join-Path $PackageRoot "experimental/m/rrlite_${layer}_4x4_${GpuArch}.hsaco") `
+            --fixture-dir $fixture --output-dir $output --iterations $Iterations `
+            > (Join-Path $folder 'gpu.stdout.log') 2> (Join-Path $folder 'gpu.stderr.log')
+        if ($LASTEXITCODE) { throw "M $layer GPU replay failed: $folder" }
+        & python (Join-Path $PackageRoot 'm_replay_validate.py') validate --layer $layer --fixture-dir $fixture --output-dir $output `
+            > (Join-Path $folder 'reference.stdout.log') 2> (Join-Path $folder 'reference.stderr.log')
+        if ($LASTEXITCODE) { throw "M $layer reference mismatch; stopping before the next layer: $folder" }
+        Get-Content -LiteralPath (Join-Path $folder 'reference.stdout.log') | Write-Host
+        $summary.layers += @{layer=$layer; passed=$true; iterations=$Iterations}
+    }
+    $summary.passed = $true
+} catch { $summary.error=$_.Exception.Message; Write-Warning $summary.error }
+finally {
+    $env:PYTHONPATH=$previousPython; $env:D4R_DIAG_DIR=$previousDiag
+    $summary | ConvertTo-Json -Depth 5 | Set-Content -LiteralPath (Join-Path $OutputDirectory 'summary.json') -Encoding UTF8
+    Compress-Archive -LiteralPath $OutputDirectory -DestinationPath "$OutputDirectory.zip" -Force
+    Write-Host "M replay bundle: $OutputDirectory.zip"
+}
+if (!$summary.passed) { exit 1 }

scripts/windows/test-native-m-fp8.ps1

@@ -0,0 +1,28 @@
+[CmdletBinding()]
+param([Parameter(Mandatory=$true)][string]$CaptureDirectory,
+    [Parameter(Mandatory=$true)][string]$BaselineValidation,
+    [string]$ModuleDirectory, [string]$HipRoot, [string]$OutputDirectory, [switch]$Benchmark)
+$ErrorActionPreference='Stop'
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$ModuleDirectory) { $ModuleDirectory=Join-Path $repo 'build/native-m-fp8-experimental' }
+if (!$HipRoot) { $HipRoot=Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo 'test-results/m-native-fp8-replay' }
+$previousPython=$env:PYTHONPATH
+try {
+    $env:PYTHONPATH="$(Join-Path $repo '.tools/python/vendor');$previousPython"
+    $metadata=Get-Content -LiteralPath (Join-Path $ModuleDirectory 'build-info.json') -Raw | ConvertFrom-Json
+    if ($metadata.hardwarePacking) {
+        & python -u (Join-Path $repo 'tools/windows/fp8_pack_validate.py') `
+            --probe (Join-Path $repo 'dist/windows-rdna4-command-list/bin/d4r_native_replay_probe.exe') `
+            --module (Join-Path $ModuleDirectory 'packing-probe/fp8_pack_probe.hsaco') `
+            --hip-root $HipRoot --output-dir (Join-Path $OutputDirectory 'packing-check')
+        if ($LASTEXITCODE) { throw 'Hardware packing does not preserve every finite FP8 encoding; stopping before network replay.' }
+    }
+    $benchmarkArguments=@()
+    if ($Benchmark) { $benchmarkArguments=@('--benchmark-control-dir',(Join-Path $repo 'build/native-m-gfx1201')) }
+    & python -u (Join-Path $repo 'tools/windows/m_native_replay_compare.py') `
+        --capture-dir $CaptureDirectory --module-dir $ModuleDirectory --hip-root $HipRoot `
+        --probe (Join-Path $repo 'dist/windows-rdna4-command-list/bin/d4r_native_replay_probe.exe') `
+        --baseline-validation $BaselineValidation --output-dir $OutputDirectory @benchmarkArguments
+    if ($LASTEXITCODE) { throw "Experimental FP8 validation failed; baseline unchanged. Logs: $OutputDirectory" }
+} finally { $env:PYTHONPATH=$previousPython }

scripts/windows/test-native-overrides.ps1

@@ -0,0 +1,52 @@
+[CmdletBinding()]
+param([string]$HipRoot, [string]$PackageRoot, [string]$ZludaRoot, [string]$OutputDirectory)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$HipRoot) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-therock' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$ZludaRoot) { $ZludaRoot = Join-Path $repo 'dist/zluda-windows-final' }
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/native-identity-' + (Get-Date -Format 'yyyyMMdd-HHmmss')) }
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$previous = @{D4R_ZLUDA_NATIVE_DIR=$env:D4R_ZLUDA_NATIVE_DIR; D4R_ZLUDA_VERBOSE=$env:D4R_ZLUDA_VERBOSE; D4R_DIAG_DIR=$env:D4R_DIAG_DIR}
+function Invoke-NativeProbe([string]$Name) {
+    $info = New-Object Diagnostics.ProcessStartInfo
+    $info.FileName = Join-Path $PackageRoot 'bin/d4r_cuda_driver_probe.exe'
+    $info.Arguments = '--hip-root "' + $HipRoot + '" --cuda-dll "' + (Join-Path $ZludaRoot 'nvcuda.dll') + '" --iterations 32'
+    $info.UseShellExecute=$false; $info.CreateNoWindow=$true; $info.RedirectStandardOutput=$true; $info.RedirectStandardError=$true
+    $process = New-Object Diagnostics.Process
+    $process.StartInfo=$info
+    if (!$process.Start()) { throw 'Cannot start native override probe' }
+    $stdout=$process.StandardOutput.ReadToEndAsync(); $stderr=$process.StandardError.ReadToEndAsync()
+    if (!$process.WaitForExit(120000)) { $process.Kill(); $process.WaitForExit(); throw 'Native override test timed out' }
+    [IO.File]::WriteAllText((Join-Path $OutputDirectory "$Name.stdout.log"),$stdout.GetAwaiter().GetResult())
+    [IO.File]::WriteAllText((Join-Path $OutputDirectory "$Name.stderr.log"),$stderr.GetAwaiter().GetResult())
+    $code=$process.ExitCode; $process.Dispose()
+    return $code
+}
+try {
+    $env:D4R_ZLUDA_VERBOSE = '1'; $env:D4R_DIAG_DIR = $OutputDirectory
+    $bad = Join-Path $OutputDirectory 'wrong-identity'
+    $good = Join-Path $OutputDirectory 'matching-identity'
+    New-Item -ItemType Directory -Force $bad,$good | Out-Null
+    foreach ($directory in @($bad,$good)) {
+        Copy-Item -LiteralPath (Join-Path $PackageRoot "bin/probe_${GpuArch}.hsaco") -Destination (Join-Path $directory 'd4r_ptx_pattern.hsaco') -Force
+    }
+    'd4r_ptx_pattern 0000000000000000' | Set-Content -LiteralPath (Join-Path $bad 'd4r-kernels.txt') -Encoding ASCII
+    $env:D4R_ZLUDA_NATIVE_DIR = $bad
+    if (Invoke-NativeProbe 'wrong') { throw 'Wrong identity must use the correct translated fallback' }
+    if (!(Select-String -LiteralPath (Join-Path $OutputDirectory 'wrong.stderr.log') -Pattern 'reason=ptx_identity.*fallback=translated' -Quiet)) {
+        throw 'Wrong identity was not explicitly rejected'
+    }
+    $identity = Select-String -LiteralPath (Join-Path $OutputDirectory 'wrong.stdout.log') -Pattern 'fnv1a64=([0-9a-f]{16})'
+    if (!$identity) { throw 'PTX probe did not report its identity' }
+    "d4r_ptx_pattern $($identity.Matches[0].Groups[1].Value)" | Set-Content -LiteralPath (Join-Path $good 'd4r-kernels.txt') -Encoding ASCII
+    $env:D4R_ZLUDA_NATIVE_DIR = $good
+    if (Invoke-NativeProbe 'matching') { throw 'Matching native override produced incorrect output' }
+    $hits = @(Select-String -LiteralPath (Join-Path $OutputDirectory 'matching.stderr.log') -Pattern '\[d4r-launch\].*backend=native')
+    if ($hits.Count -ne 32) { throw "Expected 32 native launches, got $($hits.Count)" }
+    Write-Host 'PASS NATIVE_IDENTITY wrong_hash=fallback matching_hash=native launches=32'
+} finally {
+    foreach ($name in $previous.Keys) { [Environment]::SetEnvironmentVariable($name,$previous[$name],'Process') }
+}

scripts/windows/test-native-texture.ps1

@@ -0,0 +1,94 @@
+[CmdletBinding()]
+param([string]$TextureRoot, [string]$ControlTextureRoot, [string]$CommonTextureRoot, [string]$ZludaRoot, [string]$PackageRoot,
+    [string]$OutputDirectory, [int]$Iterations=8, [string]$OutputResolution='512x288', [string]$InputResolution,
+    [switch]$CandidateFirst,
+    [ValidateSet('output','input')][string]$KernelStage='output')
+$ErrorActionPreference='Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo=[IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$PackageRoot) { $PackageRoot=Join-Path $repo 'dist/windows-rdna4-command-list' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$TextureRoot) { $TextureRoot=Join-Path $repo "build/private-textures-$GpuArch" }
+if (!$ZludaRoot) { $ZludaRoot=Join-Path $repo 'dist/zluda-windows-final' }
+if (!$OutputDirectory) { $OutputDirectory=Join-Path $repo 'test-results/k-native-texture-reference' }
+if ($OutputResolution -notmatch '^([0-9]+)x([0-9]+)$') { throw 'OutputResolution must be WIDTHxHEIGHT.' }
+$outputWidth=[int]$Matches[1]; $outputHeight=[int]$Matches[2]
+$combined=Join-Path $OutputDirectory 'private-native'
+New-Item -ItemType Directory -Force $combined | Out-Null
+foreach ($directory in @((Join-Path $repo "build/native-k-$GpuArch"),$CommonTextureRoot,$TextureRoot) | Where-Object { $_ }) {
+    Get-ChildItem -LiteralPath $directory -Filter '*.hsaco' | Copy-Item -Destination $combined -Force
+}
+& python (Join-Path $repo 'kernels/tools/kernel_manifest.py') $combined (Join-Path $repo 'nvngx_dlss.dll')
+if ($LASTEXITCODE) { throw 'Combined private manifest failed.' }
+$controlNative=Join-Path $repo "build/native-k-$GpuArch"
+if ($ControlTextureRoot -or $CommonTextureRoot) {
+    $controlNative=Join-Path $OutputDirectory 'control-private-native'
+    New-Item -ItemType Directory -Force $controlNative | Out-Null
+    foreach ($directory in @((Join-Path $repo "build/native-k-$GpuArch"),$CommonTextureRoot,$ControlTextureRoot) | Where-Object { $_ }) {
+        Get-ChildItem -LiteralPath $directory -Filter '*.hsaco' | Copy-Item -Destination $controlNative -Force
+    }
+    & python (Join-Path $repo 'kernels/tools/kernel_manifest.py') $controlNative (Join-Path $repo 'nvngx_dlss.dll')
+    if ($LASTEXITCODE) { throw 'Control private manifest failed.' }
+}
+$settings=@{D4R_VALIDATE_OUTPUT='1'; D4R_PROFILE_STAGES='1'; D4R_ZLUDA_PROFILE='1'; D4R_QUIET_API='1';
+    D4R_ZLUDA_WMMA='1'; D4R_ZLUDA_WMMA_FP8='1'; D4R_ZLUDA_WMMA_FP8_NATIVE='0';
+    D4R_ZLUDA_WMMA_F16_REFERENCE='1'; D4R_ZLUDA_PROFILE_DEFERRED=$null;
+    ZLUDA_CACHE_DIR=(Join-Path $repo 'build/zluda-cache-windows'); PYTHONPATH=(Join-Path $repo '.tools/python/vendor');
+    D4R_ZLUDA_NATIVE_DIR=$null}
+$old=@{}
+$stagedObjects=@{}
+foreach ($stage in @(@{name='control'; root=$controlNative},@{name='candidate'; root=$combined})) {
+    $stagedObjects[$stage.name]=@{}
+    foreach ($object in Get-ChildItem -LiteralPath $stage.root -Filter '*.hsaco') {
+        Assert-D4RCodeObjectTarget $object.FullName $GpuArch
+        $stagedObjects[$stage.name][$object.Name]=(Get-FileHash -LiteralPath $object.FullName -Algorithm SHA256).Hash.ToLowerInvariant()
+    }
+}
+try {
+    foreach ($key in $settings.Keys) { $old[$key]=[Environment]::GetEnvironmentVariable($key,'Process'); [Environment]::SetEnvironmentVariable($key,$settings[$key],'Process') }
+    foreach ($flags in @(0,11)) {
+        $variant=if ($flags -eq 11) { 'depthinv_mvlo_hdr' } else { 'depthreg_mvhi_ldr' }
+        $suffix=if ($KernelStage -eq 'output') { '_max_v2_rel' } else { '_v2_rel' }
+        $kernel="hiluma_engine_${KernelStage}_${variant}${suffix}"
+        $order=if ($CandidateFirst) { @('candidate','control') } else { @('control','candidate') }
+        foreach ($mode in $order) {
+            $env:D4R_ZLUDA_NATIVE_DIR=if ($mode -eq 'control') { $controlNative } else { $combined }
+            $expectedBackend=if (Test-Path -LiteralPath (Join-Path $env:D4R_ZLUDA_NATIVE_DIR ($kernel + '.hsaco'))) { 'native' } else { 'translated' }
+            if ($mode -eq 'candidate' -and $expectedBackend -ne 'native') { throw "Missing candidate object: $kernel" }
+            $arguments=@{RuntimeProfile='therock'; ZludaRoot=$ZludaRoot;
+                PackageRoot=$PackageRoot; NgxCore=(Join-Path $repo '_nvngx.dll');
+                DlssDll=(Join-Path $repo 'nvngx_dlss.dll'); NgxMode='d3d12'; NgxAbi='project-legacy'; Preset=11;
+                NgxCreateFlags=$flags; NgxOutputResolution=$OutputResolution; NgxOnly=$true; RequireNativeNetwork=$true; CommandListBackend=$true;
+                NgxInputResolution=$InputResolution;
+                PixelProfile='depth-stencil'; BarrierMode='inherited-legacy'; CaptureExceptions=$true; EarlyIndirectProbe=$true;
+                Iterations=$Iterations; TimeoutSeconds=300; OptiScalerDll=(Join-Path $repo 'dist/optiscaler-windows-d4r/OptiScaler.dll');
+                OutputDirectory=(Join-Path $OutputDirectory "$mode-$flags")}
+            & (Join-Path $PSScriptRoot 'test-windows-rdna4.ps1') @arguments
+            if ($LASTEXITCODE) { throw "Texture $mode flags=$flags workload failed." }
+            & python (Join-Path $repo 'tools/windows/profile_report.py') $arguments.OutputDirectory --output (Join-Path $arguments.OutputDirectory 'profile.json')
+            if ($LASTEXITCODE) { throw 'Texture profile report failed.' }
+            $profile=Get-Content -LiteralPath (Join-Path $arguments.OutputDirectory 'profile.json') -Raw | ConvertFrom-Json
+            $samples=@($profile.kernels | Where-Object { $_.kernel -eq $kernel -and $_.backend -eq $expectedBackend -and $_.phase -eq 'main' -and $_.serializing })
+            if ($samples.Count -ne 1 -or $samples[0].gpuMs.samples -ne $Iterations) {
+                throw "Missing valid serializing $KernelStage-kernel timings ($expectedBackend) for $mode flags=$flags; retain this run as correctness evidence only."
+            }
+        }
+        $control=Join-Path $OutputDirectory "control-$flags"; $candidate=Join-Path $OutputDirectory "candidate-$flags"
+        $stderr=Get-Content -LiteralPath (Join-Path $candidate 'd3d12-evaluate-preset-11.stderr.log') -Raw
+        $hits=[regex]::Matches($stderr, ('\[d4r-launch\] kernel="' + $kernel + '" backend=native')).Count
+        if ($hits -ne $Iterations) { throw "Texture override was not executed on every frame: $kernel hits=$hits" }
+        & python (Join-Path $repo 'tools/windows/frame_compare.py') --reference $control --actual $candidate --width $outputWidth --height $outputHeight --exact
+        if ($LASTEXITCODE) { throw "Texture flags=$flags full-frame RGB mismatch; preserve baseline." }
+    }
+    @{passed=$true; architecture=$GpuArch; framesPerVariant=$Iterations; outputResolution=$OutputResolution; createFlags=@(0,11); strictRgb=$true;
+        inputResolution=$InputResolution;
+        serializingProfile=$true; candidateFirst=[bool]$CandidateFirst; kernelStage=$KernelStage;
+        controlTextureRoot=$ControlTextureRoot; commonTextureRoot=$CommonTextureRoot;
+        stagedObjects=$stagedObjects;
+        manifestSha256=(Get-FileHash -LiteralPath (Join-Path $TextureRoot 'd4r-kernels.txt') -Algorithm SHA256).Hash.ToLowerInvariant();
+        privateNvidiaDerivedCode=$true; source=(Get-Content -LiteralPath (Join-Path $TextureRoot 'build-info.json') -Raw | ConvertFrom-Json)} |
+        ConvertTo-Json -Depth 12 | Set-Content -LiteralPath (Join-Path $TextureRoot 'validation.json') -Encoding UTF8
+    Write-Host "PASS: both private K $KernelStage variants executed and matched every RGB component. $OutputDirectory"
+} finally {
+    foreach ($key in $old.Keys) { [Environment]::SetEnvironmentVariable($key,$old[$key],'Process') }
+}