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Fix for sampling garbage outside of screen with low res transparent upsample and dynamic resolution #6957

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Merged
merged 3 commits into from
Feb 2, 2022
Merged

Fix for sampling garbage outside of screen with low res transparent upsample and dynamic resolution #6957

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470832b
Fix
FrancescoC-unity Feb 2, 2022
fed9de7
changelog
FrancescoC-unity Feb 2, 2022
e1934da
Merge branch 'hd/bugfix' into HDRP/fix-lowres-sample-out-of-screen
sebastienlagarde Feb 2, 2022
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1 change: 1 addition & 0 deletions com.unity.render-pipelines.high-definition/CHANGELOG.md
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Expand Up @@ -103,6 +103,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- Fixed vertex color mode Add name whicgh was misleading, renamed to AddSubstract.
- Fixed screen space shadow when multiple lights cast shadows.
- Fixed issue with accumulation motion blur and depth of field when path tracing is enabled.
- Fixed issue with dynamic resolution and low res transparency sampling garbage outside of the render target.

## [14.0.0] - 2021-11-17

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4 changes: 3 additions & 1 deletion com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/UpsampleTransparent.shader
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Expand Up @@ -97,7 +97,9 @@ Shader "Hidden/HDRP/UpsampleTransparent"
#if DEBUG_EDGE
return float4(0.0, 10.0, 0.0, 1.0);
#else
return SAMPLE_TEXTURE2D_X_LOD(_LowResTransparent, s_point_clamp_sampler, ClampAndScaleUVForPoint(nearestUV), 0);
// Important note! The reason we need to do ClampAndScaleUVForBilinear is because the candidate for nearestUV are going to be the ones
// used for bilinear. We are using the same UVs used for bilinear -hence the uv clamp for bilinear- it is just the filtering that is different.
return SAMPLE_TEXTURE2D_X_LOD(_LowResTransparent, s_point_clamp_sampler, ClampAndScaleUVForBilinear(nearestUV), 0);
#endif
}
#else // BILINEAR
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