- Add native preset K kernels for gfx1030–gfx1036 using software matrix
products, with fast and accuracy builds and RDNA2 motion kernels.
- Follow OptiScaler's DLSS and RR preset overrides, sanitize unsupported
values and select the preset matching the feature's quality mode.
- Enable FSR 4 under NVIDIA GPU spoofing by exposing real AMD PCI IDs
to OptiScaler and FidelityFX modules; bundle AMD's loader and upscaler.
- Keep K on native kernels in engine auto mode unless HIP is selected,
and fall back to CUDA for M/L when shader_float8 is unavailable.
- Add native-engine K GPU timings, preset recreation harness controls
and regression coverage; fix the input-wait test's glibc name clash.
- Update configuration, installer guidance and release documentation,
simplify the README and move gameplay videos to docs/videos.md.
RDNA2 kernels remain untested on RDNA2 hardware; software matrix
arithmetic was validated against WMMA on RDNA3.
- [Interop] MarkerPollUs = auto is the new default: the input-marker wait learns when
each feature's inputs become ready, sleeps in <=200 us chunks, yields near the
prediction and backs off when late (d4r_input_wait.h); a number keeps fixed pacing
(0 yields). d4r_config.py no longer exports 200 when the key is unset
- D4R_SHIM_GPU_INPUT_WAIT=1 (experimental, split VRAM, age 0): NGX's null stream
waits on a coherent Vulkan word imported into HIP (d4rStreamWaitValue32Eq) instead
of CPU polling. The original readback marker stays the authority; a CPU watchdog
releases discarded lists and timeouts. Denoiser, verify, capture and dilation
frames keep the CPU wait
- D4R_SHIM_GPU_COMPLETION=1 (needs GPU_INPUT_WAIT): the bridge writes a completion
word right after the native output kernel (d4rNgxWriteValue32), and the game's queue
polls it with a bounded compute wait (kernels/support/vulkan_wait.comp), replacing
the split list's CPU timeline signal. frame_retired writes the same word on every
failure path
- D4R_SHIM_NATIVE_COMPLETION=1: a null-stream callback in the bridge signals the
split timeline (d4rNgxTimeline*); D4rFrameCompletion::can_signal only releases the
oldest outstanding frame
- RGBA8 output: tex_common.h adds an 'R4' redirect tag, so K's native output kernel
stores packed RGBA8 directly (D4R_SHIM_OUTPUT_RGBA8=1, checked against the kernel
manifest by d4rOutputKernelRgba8). Host packing handles RGBA8 too.
patches/vkd3d-proton/0004 (VKD3D_D4R_LINEAR_RGBA8=WxH) makes such outputs linear and
exportable so the result can be written in place
- D4R_SHIM_FUSE_RGBA8_INPUT=1: one Vulkan pass converts and copies RGBA8 color input
(vulkan_read.comp mode 5 matches the blit's toward-zero halves, plus a row stride)
- profiling: thread CPU time from the Unix bridge (Wine's GetThreadTimes ticks at
10 ms); game-queue D3D12 timestamps (vk_input/vk_dlss_wait/vk_output/vk_total);
gpu_eval split into input_gpu_wait and dlss_gpu; D4R_PROFILE_GPU_EVENTS,
_TIMESTAMPS, _LOG and _CPU_TIME=0 switch off individual parts for bisection
- bridge: D4R_NGX_STREAM_PRIORITY=high|normal runs NGX on a priority stream
(off by default; no gain measured)
- release_feature: a feature already marked retiring by a failed drain can still
be released normally
- harness: RGBA8 with motion and jitter scenes (re-quantized each frame),
D4R_HARNESS_RGBA8_RAMP, D4R_HARNESS_THRASH_MB to evict L2/Infinity Cache before
each evaluation
- kernels/native: in_hoist.py and split_output_paths.py (opt-in scheduling
experiments); scripts/build_k_ldr_output.sh builds K's LDR output with an
optional D4R_LDR_OUTPUT_MAX_VGPR cap
- tests: test_input_wait.py and test_latency_optimizations.py; MarkerPollUs and
frame-completion tests updated
ayo