Per Licensee:
Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well.
We usually have to force recompiling the shaders to fix the issue. I was unable to reproduce this bug using previous version of DX
See attached video. I have reproduced this issue in 4.18.3 and 4.19.2.
Result: After previewing nodes a few times each, the preview will start to behave unexpectedly. TexCoord preview might show SphereMask result, 1-X node preview might show TexCoord result or Rotator result, etc.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-59204 in the post.
10 |
Component | UE - Graphics Features |
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Affects Versions | 4.18.3, 4.19.2 |
Target Fix | 4.23 |
Fix Commit | 6925347 |
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Main Commit | 6925347 |
Release Commit | 6955818 |
Created | May 16, 2018 |
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Resolved | Jun 17, 2019 |
Updated | Jul 25, 2019 |