FSR2 temporal upscaling fixes: unjittered reprojection, sharpen Y-flip, MSAA guard, descriptor double-buffering

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- Motion vectors: single unjittered reprojection matrix (80 bytes) instead of
  two jittered matrices (160 bytes), eliminating numerical instability from
  jitter amplification through large world coordinates
- Sharpen pass: fix Y-flip for correct UV sampling, double-buffer descriptor
  sets to avoid race with in-flight command buffers
- MSAA: auto-disable when FSR2 enabled, grey out AA setting in UI
- Accumulation: variance-based neighborhood clamping in YCoCg space,
  correct history layout transitions
- Frame index: wrap at 256 for stable Halton sequence

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Kelsi 2026-03-08 01:22:15 -08:00

parent 52317d1edd

commit e94eb7f2d1

9 changed files with 95 additions and 106 deletions

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