feat: add d4r inference engines and Windows parity tooling
Add native K/M/RR inference engines, HIP kernels, replay and validation harnesses, and Windows DLSS setup and runtime support. Include GPU profiling tools, build and packaging scripts, platform integration patches, and implementation documentation.
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#!/usr/bin/env bash
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set -euo pipefail
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umask 077
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# Runs the synthetic D3D12 harness through a locally supplied OptiScaler
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# dxgi.dll and the d4r shim. All proxy files and the NVAPI identity bridge are
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# staged in disposable /tmp paths; the Proton installation is not modified.
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# usage: run_d3d12_dlss_harness_optiscaler_proton.sh PROTON_DIR OPTISCALER_DLL OUTPUT_RAW [FRAMES [IN_W IN_H OUT_W OUT_H]]
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if [[ $# -lt 3 ]]; then
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printf 'usage: %s PROTON_DIR OPTISCALER_DLL OUTPUT_RAW [FRAMES [IN_W IN_H OUT_W OUT_H]]\n' "$0" >&2
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exit 2
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fi
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ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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PROTON_DIR="$(realpath "$1")"
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OPTISCALER_DLL="$(realpath "$2")"
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OUTPUT_PATH="$(realpath -m "$3")"
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shift 3
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source "$ROOT/scripts/d4r_proton_env.sh"
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for path in "$D4R_RUNTIME_DIR/bin/d4r_nvngx.dll" "$D4R_RUNTIME_DIR/bin/nvcuda.dll" \
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"$D4R_RUNTIME_DIR/bin/nvngx_dlss.dll" "$D4R_RUNTIME_DIR/ngx/_nvngx.dll"; do
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if [[ ! -f "$path" ]]; then
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printf 'Missing staged d4r runtime file: %s\n' "$path" >&2
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exit 2
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fi
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done
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# DLSS Enabler has been found installed under the name OptiScaler.dll on this
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# machine. Reject it here: its proxy rejects dxgi/NGX harness naming and can
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# open a modal error dialog during LoadLibrary.
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EXPORT_HEADER="$(x86_64-w64-mingw32-objdump -p "$OPTISCALER_DLL" | sed -n '/The Export Tables/,+6p')"
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if [[ "$EXPORT_HEADER" != *OptiScaler.dll* ]]; then
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printf 'Expected a real OptiScaler DLL (PE export name OptiScaler.dll): %s\n' "$OPTISCALER_DLL" >&2
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exit 2
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fi
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"$ROOT/scripts/build_d4r_nvapi_identity.sh" >/dev/null
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APP_DIR="${D4R_OPTISCALER_APP_DIR:-${TMPDIR:-/tmp}/d4r-optiscaler-harness-${UID}-$(date +%s%N)}"
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mkdir -p "$APP_DIR"
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LAUNCHER_DIR="$(mktemp -d "${TMPDIR:-/tmp}/d4r-optiscaler-proton.XXXXXXXX")"
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COMPAT_DIR="${D4R_OPTISCALER_COMPAT_DIR:-${TMPDIR:-/tmp}/d4r-optiscaler-compat-$UID}"
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mkdir -p "$COMPAT_DIR"
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cp -f "$OPTISCALER_DLL" "$APP_DIR/dxgi.dll"
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INPUT_HOOK="${D4R_OPTISCALER_ENABLE_DLSS_INPUTS:-false}"
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ORIGINAL_HOOK="${D4R_OPTISCALER_HOOK_ORIGINAL_NVNGX_ONLY:-$INPUT_HOOK}"
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if [[ "$INPUT_HOOK" != true && "$INPUT_HOOK" != false ]] ||
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[[ "$ORIGINAL_HOOK" != true && "$ORIGINAL_HOOK" != false ]]; then
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printf 'OptiScaler hook settings must be true or false\n' >&2
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exit 2
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fi
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# D4R_OPTISCALER_STAGE_CORE=0 keeps the official core in the runtime directory,
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# as in a game install; the shim then loads it below OptiScaler's hooks.
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STAGE_CORE="${D4R_OPTISCALER_STAGE_CORE:-1}"
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if [[ "$INPUT_HOOK" == true && "$STAGE_CORE" == 1 ]]; then
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if [[ "$ORIGINAL_HOOK" != true || "$APP_DIR" != "${APP_DIR,,}" ]]; then
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printf 'The DLSS input hook requires HookOriginalNvngxOnly=true and a lowercase app path\n' >&2
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exit 2
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fi
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# OptiScaler hooks game-side nvngx loads. Keep the official core's required
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# filename inside the harness EXE directory and pass a lowercase z: path;
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# its hook then leaves this internal core load alone.
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cp -f "$D4R_RUNTIME_DIR/ngx/_nvngx.dll" "$APP_DIR/_nvngx.dll"
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cp -f "$D4R_RUNTIME_DIR/dlss/nvngx_dlss.dll" "$APP_DIR/nvngx_dlss.dll"
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core_windows_path="$(d4r_winpath "$APP_DIR/_nvngx.dll")"
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export D4R_NGX_CORE="z:${core_windows_path#Z:}"
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fi
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cat > "$APP_DIR/OptiScaler.ini" <<EOF
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[Upscalers]
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Dx12Upscaler=dlss
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[FrameGen]
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Enabled=false
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FGInput=nofg
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FGOutput=nofg
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[DLSS]
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Enabled=true
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[Inputs]
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EnableDlssInputs=$INPUT_HOOK
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[Hooks]
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HookOriginalNvngxOnly=$ORIGINAL_HOOK
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[FSR]
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FsrAgilitySDKUpgrade=false
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[Libraries]
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NvngxPath=$(d4r_winpath "$D4R_RUNTIME_DIR/bin/d4r_nvngx.dll")
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NvngxDlssPath=$(d4r_winpath "$D4R_RUNTIME_DIR/bin")
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[NvApi]
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OverrideNvapiDll=false
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[Spoofing]
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Dxgi=false
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[Plugins]
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LoadAsiPlugins=false
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[Log]
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LogToFile=true
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LogLevel=1
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EOF
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# Proton refreshes nvapi64.dll in the prefix on every run. Make a temporary
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# launcher that copies our identity bridge instead. Its other files are links
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# to the unmodified Proton installation.
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cp -f "$PROTON_DIR/proton" "$PROTON_DIR/filelock.py" "$PROTON_DIR/version" "$LAUNCHER_DIR/"
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ln -s "$PROTON_DIR/files" "$LAUNCHER_DIR/files"
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ln -s "$PROTON_DIR/protonfixes" "$LAUNCHER_DIR/protonfixes"
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LAUNCHER="$LAUNCHER_DIR/proton" python3 - <<'PY'
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import os
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from pathlib import Path
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path = Path(os.environ["LAUNCHER"])
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source = path.read_text()
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old = 'try_copy(g_proton.arch_pe_dir("wine/nvapi", False) + "nvapi64.dll", "drive_c/windows/system32",'
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new = 'try_copy(os.environ.get("D4R_NVAPI_IDENTITY_DLL", g_proton.arch_pe_dir("wine/nvapi", False) + "nvapi64.dll"), "drive_c/windows/system32",'
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if source.count(old) != 1:
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raise SystemExit("Proton NVAPI copy point changed; cannot stage identity bridge")
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path.write_text(source.replace(old, new))
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PY
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chmod +x "$LAUNCHER_DIR/proton"
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export STEAM_COMPAT_CLIENT_INSTALL_PATH="${STEAM_COMPAT_CLIENT_INSTALL_PATH:-$HOME/.local/share/Steam}"
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export STEAM_COMPAT_DATA_PATH="$COMPAT_DIR"
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PROTON_ENABLE_NVAPI=1 WINEDEBUG=-all "$PROTON_DIR/proton" run cmd /c exit 0 >/dev/null
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NVAPI_REAL="$PROTON_DIR/files/lib/wine/nvapi/x86_64-windows/nvapi64.dll"
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if [[ ! -f "$NVAPI_REAL" ]]; then
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printf 'Cannot find Proton DXVK-NVAPI at %s\n' "$NVAPI_REAL" >&2
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exit 2
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fi
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cp -f "$NVAPI_REAL" "$COMPAT_DIR/pfx/drive_c/windows/system32/d4r_nvapi64_real.dll"
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export D4R_NVAPI_IDENTITY_DLL="$ROOT/build/nvapi64.dll"
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export D4R_HARNESS_APP_DIR="$APP_DIR"
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export D4R_HARNESS_NGX_DLL="$APP_DIR/dxgi.dll"
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export D4R_HARNESS_LOAD_NGX_EARLY=1
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export D4R_HARNESS_TRACE="$(d4r_winpath "$APP_DIR/harness.trace")"
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export D4R_SHIM_LOG="$(d4r_winpath "$APP_DIR/d4r_nvngx.log")"
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export D4R_PROTON_COMPAT_DATA="$COMPAT_DIR"
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export DXVK_CONFIG="${DXVK_CONFIG:-dxgi.customVendorId = 10de}"
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"$ROOT/scripts/run_d3d12_dlss_harness_proton.sh" "$LAUNCHER_DIR" "$OUTPUT_PATH" "$@"
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if [[ ! -s "$OUTPUT_PATH" || ! -f "$APP_DIR/OptiScaler.log" || ! -f "$APP_DIR/d4r_nvngx.log" ]] ||
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! rg -q 'DLSSFeatureDx12::Init _CreateFeature result: NVSDK_NGX_Result_Success' "$APP_DIR/OptiScaler.log" ||
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! rg -q 'NVSDK_NGX_CUDA_CreateFeature -> 0x00000001' "$APP_DIR/d4r_nvngx.log" ||
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! rg -q 'frame [0-9]+ done:' "$APP_DIR/d4r_nvngx.log"; then
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printf 'OptiScaler did not complete the official DLSS path; inspect %s\n' "$APP_DIR" >&2
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exit 1
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fi
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printf 'OptiScaler DLSS harness output: %s\n' "$OUTPUT_PATH"
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printf 'OptiScaler, shim, and stage logs: %s\n' "$APP_DIR"
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sha256sum "$OUTPUT_PATH"
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