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.

tests/test_output_conversion_gpu.py

@@ -0,0 +1,21 @@
+"""R11G11B10 storage conversion must match the original blit for all half inputs."""
+import os
+from pathlib import Path
+import subprocess
+import tempfile
+import unittest
+
+ROOT=Path(__file__).resolve().parents[1]
+
+
+@unittest.skipUnless(os.environ.get('D4R_RUN_GPU_TESTS')=='1','opt-in GPU test')
+class OutputConversionGpuTests(unittest.TestCase):
+    def test_fused_r11_matches_blit(self):
+        with tempfile.TemporaryDirectory() as temp:
+            runner=Path(temp)/'conversion'
+            subprocess.run(['c++','-std=c++17','-O2','-Wall','-Wextra','-Werror',
+                            '-Wno-missing-field-initializers','-I'+str(ROOT/'tools'),
+                            '-I'+str(ROOT/'build/vulkan-staging'),
+                            str(ROOT/'tools/vulkan_output_conversion_probe.cpp'),'-lvulkan','-o',str(runner)],
+                           check=True,capture_output=True,text=True)
+            subprocess.run([str(runner)],check=True,capture_output=True,text=True,timeout=30)