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Proper area light NaN fix #4220

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Apr 20, 2021
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,8 @@ real3 ComputeEdgeFactor(real3 V1, real3 V2)
if (V1oV2 < 0)
{
// Undo range reduction.
y = PI * rsqrt(saturate(1 - V1oV2 * V1oV2)) - y;
const float epsilon = 1e-5f;
y = PI * rsqrt(max(epsilon, saturate(1 - V1oV2 * V1oV2))) - y;
}

return V1xV2 * y;
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1 change: 1 addition & 0 deletions com.unity.render-pipelines.high-definition/CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -153,6 +153,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- Fixed global Settings ignore the path set via Fix All in HDRP wizard (case 1327978)
- Fixed GBuffer clear option in FrameSettings not working
- Fixed usage of Panini Projection with floating point HDRP and Post Processing color buffers.
- Fixed a NaN generating in Area light code.

### Changed
- Changed Window/Render Pipeline/HD Render Pipeline Wizard to Window/Rendering/HDRP Wizard
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