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[HDRP][Path Tracing] Fixed transparent unlit #4605

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Merged
merged 5 commits into from
May 31, 2021
Merged

[HDRP][Path Tracing] Fixed transparent unlit #4605

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aea2708
Fixed issue with transparent unlit.
eturquin May 21, 2021
7e6b5c4
Updated changelog.
eturquin May 21, 2021
125905d
Reverted accidental change to default mtl.
eturquin May 21, 2021
c147515
Merge branch 'hd/bugfix' into hd/pt_transparent_unlit
sebastienlagarde May 29, 2021
93bb646
Merge branch 'hd/bugfix' into hd/pt_transparent_unlit
sebastienlagarde May 31, 2021
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1 change: 1 addition & 0 deletions com.unity.render-pipelines.high-definition/CHANGELOG.md
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Expand Up @@ -219,6 +219,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- Fixed for discrepancies in intensity and saturation between screen space refraction and probe refraction.
- Fixed a divide-by-zero warning for anisotropic shaders (Fabric, Lit).
- Fixed VfX lit particle AOV output color space.
- Fixed path traced transparent unlit material (case 1335500).

### Changed
- Changed Window/Render Pipeline/HD Render Pipeline Wizard to Window/Rendering/HDRP Wizard
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3 changes: 2 additions & 1 deletion ...er-pipelines.high-definition/Runtime/RenderPipeline/ShaderPass/ShaderPassPathTracing.hlsl
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Expand Up @@ -208,7 +208,8 @@ void ComputeSurfaceScattering(inout PathIntersection pathIntersection : SV_RayPa
if (builtinData.opacity < 1.0)
{
RayDesc rayDescriptor;
rayDescriptor.Origin = GetAbsolutePositionWS(fragInput.positionRWS) - fragInput.tangentToWorld[2] * _RaytracingRayBias;
float bias = dot(WorldRayDirection(), fragInput.tangentToWorld[2]) > 0.0 ? _RaytracingRayBias : -_RaytracingRayBias;
rayDescriptor.Origin = fragInput.positionRWS + bias * fragInput.tangentToWorld[2];
rayDescriptor.Direction = WorldRayDirection();
rayDescriptor.TMin = 0.0;
rayDescriptor.TMax = FLT_INF;
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