Transform node which transforms vector from mesh particle space to world space in vertex shader always returns 0.
In ue4.24, it works fine.
This behavior has been changed in CL#12558699.
Removing following if statement line in FHLSLMaterialTranslator::TransformBase fixes this issue.
case MCB_MeshParticle: { if (DestCoordBasis == MCB_World) { CodeStr = TEXT("mul(<A>, <MATRIX>(Parameters.Particle.ParticleToWorld))"); if (ShaderFrequency == SF_Pixel) // remove this line { bUsesParticleLocalToWorld = true; } } // use World as an intermediary base break; }
[Link Removed]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-93591 in the post.
3 |
Component | UE - Niagara |
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Affects Versions | 4.25 |
Target Fix | 4.26 |
Created | May 27, 2020 |
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Resolved | Jun 14, 2020 |
Updated | Jul 21, 2020 |