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Use more lenient KSep for non-inverted depth.

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Getting some false depth clip values otherwise.
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Hans-Kristian Arntzen 2022-07-02 19:37:16 +02:00
parent 2e6d42ad0a
commit 685d0dae92
1 changed files with 4 additions and 0 deletions
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src/ffx-fsr2-api/shaders/ffx_fsr2_depth_clip.h
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@ -31,8 +31,12 @@ FfxFloat32 ComputeSampleDepthClip(FFX_MIN16_I2 iPxSamplePos, FfxFloat32 fPreviou
const FfxFloat32 fHalfViewportWidth = RenderSize().x * 0.5f; const FfxFloat32 fHalfViewportWidth = RenderSize().x * 0.5f;
FfxFloat32 fDepthThreshold = ffxMin(fCurrentDepthViewSpace, fPrevNearestDepthViewSpace); FfxFloat32 fDepthThreshold = ffxMin(fCurrentDepthViewSpace, fPrevNearestDepthViewSpace);
#if !FFX_FSR2_OPTION_INVERTED_DEPTH
const FfxFloat32 Ksep = 4.0f * 1.37e-05f; // Arbitrary hack to make normal depth work better.
#else
// WARNING: Ksep only works with reversed-z with infinite projection. // WARNING: Ksep only works with reversed-z with infinite projection.
const FfxFloat32 Ksep = 1.37e-05f; const FfxFloat32 Ksep = 1.37e-05f;
#endif
FfxFloat32 fRequiredDepthSeparation = Ksep * fDepthThreshold * TanHalfFoV() * fHalfViewportWidth; FfxFloat32 fRequiredDepthSeparation = Ksep * fDepthThreshold * TanHalfFoV() * fHalfViewportWidth;
FfxFloat32 fDepthDiff = fCurrentDepthViewSpace - fPrevNearestDepthViewSpace; FfxFloat32 fDepthDiff = fCurrentDepthViewSpace - fPrevNearestDepthViewSpace;