I narrowed down the issue to the Main call of ShadowProjectionPixelShader, and tested (on 4.26 and 4.27) a combo of different material and light shadow settings, as well as enabling transmission on the light for the the SUBPIXEL_SHADOW enabled shaders, but couldn't get to the bottom of it.
Download the licensee repro here - [Link Removed]
The issue is immediately apparent.
Request a info about UE-127172 bug tracker
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-121788 in the post.
| 2 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 4.26.2, 4.27 |
| Target Fix | 5.0 |
| Fix Commit | 1770557 |
|---|
| Created | Aug 17, 2021 |
|---|---|
| Resolved | Oct 4, 2021 |
| Updated | Oct 6, 2021 |