This only happens when
1) Hair Width is very small. e.g. 0.01 in the example
2) Light has raytraced shadow and Samples Per Pixel has a value > 1. e.g. 8 in the example
The problem seems to be related with rasterization. r.HairStrands.RasterizationScale 0 workarounds ** it. If this is by design, it would be very helpful to reflect the parameter in the UI.
Open attached project to reproduce
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How to delete some elements correctly when deleting an array loop?
UMG RichText not appear image when packaged
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-94065 in the post.
0 |
Component | UE - Graphics Features - Lumen |
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Affects Versions | 4.25 |
Target Fix | 4.26 |
Created | Jun 8, 2020 |
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Resolved | Oct 6, 2020 |
Updated | Sep 19, 2021 |