6 commits

Author	SHA1	Message	Date
Kelsi	e2a2316038	Stabilize FSR2 path and refine temporal pipeline groundwork	2026-03-08 18:52:04 -07:00
Kelsi	a8500a80b5	FSR2: selective clamp, tonemapped accumulation, terrain load radius 3 ... - Selective neighborhood clamp: only modify history when there's actual motion or disocclusion — static pixels pass history through untouched, preventing jitter-chasing from the shifting variance box - Tonemapped accumulation: Reinhard tonemap before blend compresses bright edges so they don't disproportionately cause jitter - Jitter-aware sample weighting: blend 3-20% based on sample proximity - Soft MV dead zone: smoothstep instead of step avoids spatial discontinuity - Aggressive velocity response: 30%/px motion, 50% cap, 80% disocclusion - Terrain loading: radius 3 (49 tiles) to prevent spawn hitches, processOneReadyTile for smooth progress bar updates	2026-03-08 15:15:44 -07:00
Kelsi	f74dcc37e0	FSR2: reduce doubling via tighter clamp, MV dead zone, luminance stability ... - Motion shader: zero out sub-0.01px motion to eliminate float precision noise in reprojection (distant geometry with large world coords) - Accumulate: tighten neighborhood clamp gamma 3.0→1.5 to catch slightly misaligned history causing ghost doubles - Reduce max jitter-aware blend 30%→20% for less visible oscillation - Add luminance instability dampening: reduce blend when current frame disagrees with history to prevent shimmer on small/distant features	2026-03-08 14:34:58 -07:00
Kelsi	c3047c33ba	FSR2: fix motion vector jitter, add bicubic anti-ringing, depth-dilated MVs ... - Motion shader: unjitter NDC before reprojection (ndc+jitter, not ndc-jitter), compute motion against unjittered UV so static scenes produce zero motion - Pass jitter offset to motion shader (push constant 80→96 bytes) - Accumulate shader: restore Catmull-Rom bicubic with anti-ringing clamp to prevent negative-lobe halos at edges while maintaining sharpness - Add depth-dilated motion vectors (3x3 nearest-to-camera) to prevent background MVs bleeding over foreground edges - Widen neighborhood clamp gamma to 3.0, uniform 5% blend with disocclusion/velocity reactive boosting	2026-03-08 14:18:00 -07:00
Kelsi	e94eb7f2d1	FSR2 temporal upscaling fixes: unjittered reprojection, sharpen Y-flip, MSAA guard, descriptor double-buffering ... - 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	2026-03-08 01:22:15 -08:00
Kelsi	52317d1edd	Implement FSR 2.2 temporal upscaling ... Full FSR 2.2 pipeline with depth-based motion vector reprojection, temporal accumulation with YCoCg neighborhood clamping, and RCAS contrast-adaptive sharpening. Architecture (designed for FSR 3.x frame generation readiness): - Camera: Halton(2,3) sub-pixel jitter with unjittered projection stored separately for motion vector computation - Motion vectors: compute shader reconstructs world position from depth + inverse VP, reprojects with previous frame's VP - Temporal accumulation: compute shader blends 5-10% current frame with 90-95% clamped history, adaptive blend for disocclusion - History: ping-pong R16G16B16A16 buffers at display resolution - Sharpening: RCAS fragment pass with contrast-adaptive weights Integration: - FSR2 replaces both FSR1 and MSAA when enabled - Scene renders to internal resolution framebuffer (no MSAA) - Compute passes run between scene and swapchain render passes - Camera cut detection resets history on teleport - Quality presets shared with FSR1 (0.50-0.77 scale factors) - UI: "Upscaling" combo with Off/FSR 1.0/FSR 2.2 options	2026-03-07 23:13:01 -08:00