rr: add FSR Ray Regeneration, exact RDNA3 inference and motion experiments

Add an experimental FSR Ray Regeneration backend for D3D12 RR requests:
- Convert depth, motion, normals and albedos into AMD denoiser inputs.
- Split and recompose diffuse/specular signals, then run Super Sampling.
- Add stability/detail controls, demodulation guards and halo limiting.
- Handle AMD provider discovery under NVIDIA GPU spoofing.
- Add runtime probes, synthetic reference scenes and per-dispatch profiling.

Add exact gfx11 DLSS-RR inference using f16 cooperative matrices:
- Reproduce FP8 conversions, accumulation and camera reprojection arithmetic.
- Widen model weights and avoid requiring VK_EXT_shader_float8.
- Extend model building, replay tools and descriptor metadata.

Expand motion preprocessing and experimental AW2 native-motion support:
- Add tiled LDS dilation, padded allocation handling and thin-only sky fill.
- Order dilation with input waits and NGX on the selected stream.
- Add jitter-aligned native composition, hybrid routing and wire history repair.
- Add prepared masks, sparse repair and independent motion/repair controls.

Add optional fused R11G11B10 input/output conversion, sampled stage timings
and profile summarization. Extend configuration, packaging, documentation,
FidelityFX headers and CPU/GPU regression coverage.

scripts/build_vkd3d_proton_d4r.sh

@@ -6,7 +6,11 @@ set -euo pipefail
 # the game launcher takes as D4R_VKD3D_DIR.
 # usage: build_vkd3d_proton_d4r.sh OUT_DIR
 # Env: VKD3D_PROTON_SRC (clone, default ~/.cache/d4r-vkd3d-proton),
-#      VKD3D_PROTON_COMMIT (default 3dfc6f07, the base GE-Proton11-3 ships).
+#      VKD3D_PROTON_COMMIT (default 3dfc6f07, the base GE-Proton11-3 ships),
+#      D4R_VKD3D_FSR_RR=1: also what AMD's FSR Ray Regeneration needs on RDNA 3
+#        ([RayReconstruction] Backend = fsr): dxil-spirv's accepted scalar FP8 fallback (upstream PR 307,
+#        merge f9f6294f, cherry-picked onto the linked translator) and -Denable_extended_emulation=true,
+#        in a build directory of its own. Run games with DXIL_SPIRV_CONFIG=wmma_rdna3_workaround.
 if [[ $# -ne 1 ]]; then
   printf 'usage: %s OUT_DIR\n' "$0" >&2
   exit 2
@@ -22,7 +26,18 @@ BUILD="$SRC-build"
 git -C "$SRC" checkout -q -f -B d4r-split "$COMMIT"
 git -C "$SRC" submodule update --init --recursive -q
 git -C "$SRC" apply "$ROOT"/patches/vkd3d-proton/*.patch
-[[ -d "$BUILD" ]] || meson setup --cross-file "$SRC/build-win64.txt" --buildtype release -Denable_tests=false "$BUILD" "$SRC"
+EXTRA=()
+if [[ "${D4R_VKD3D_FSR_RR:-0}" == 1 ]]; then
+  DXIL="$SRC/subprojects/dxil-spirv"
+  git -C "$DXIL" fetch -q origin f9f6294f3a6795e071bef3a64d2bee99e7c1b7bc
+  if ! git -C "$DXIL" merge-base --is-ancestor f9f6294f3a6795e071bef3a64d2bee99e7c1b7bc^2 HEAD; then
+    git -C "$DXIL" -c user.name=d4r -c user.email=d4r@localhost cherry-pick -x \
+      $(git -C "$DXIL" rev-list --reverse f9f6294f3a6795e071bef3a64d2bee99e7c1b7bc^1..f9f6294f3a6795e071bef3a64d2bee99e7c1b7bc^2)
+  fi
+  BUILD="$SRC-build-fsrrr"
+  EXTRA=(-Denable_extended_emulation=true)
+fi
+[[ -d "$BUILD" ]] || meson setup --cross-file "$SRC/build-win64.txt" --buildtype release -Denable_tests=false "${EXTRA[@]}" "$BUILD" "$SRC"
 ninja -C "$BUILD"
 mkdir -p "$OUT"
 x86_64-w64-mingw32-strip -o "$OUT/d3d12.dll" "$BUILD/libs/d3d12/d3d12.dll"