There are two UDNs related to this issue. It makes the Path Tracer unusable with MGPU, with atmosphere enabled.
I already have a one-line fix implemented and tested. The atmosphere scan line artifacts are caused by the atmosphere lookup texture not being generated on all GPUs, so it just needs an RDG_GPU_MASK_SCOPE where that happens.
Steps reported on UDN:
Observe scan line artifacts across the entire frame (helps to take a screenshot and zoom in).
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-176829 in the post.
1 |
Component | UE - Graphics Features - Path Tracer |
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Affects Versions | 5.1, 5.2 |
Target Fix | 5.2 |
Created | Feb 10, 2023 |
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Resolved | Feb 23, 2023 |
Updated | Apr 29, 2023 |