Looking at render doc captures in Base Pass we see pixelated black spots

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which correspond directly to failed depth test:

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See attached project for repro cases.


Steps to Reproduce
  1. Create a new material as shown below
  2. Observe parts of the mesh jittering in and out, as you'd expect with z-fighting

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Have Comments or More Details?

There's no existing public thread on this issue, so head over to AnswerHub just mention UE-102725 in the post.

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Affects Versions4.25.4
Target Fix4.27
CreatedNov 6, 2020
UpdatedNov 9, 2020