Description

Licensee is reporting a problem "where compressed volume textures seem to get corrupted. Disabling compression by setting Compression Settings = VectorDisplacement solves the issue, but at a pretty high resource size cost. The texture in question is 256x256x256, but it also happens on smaller sizes.

Inspecting the texture in question in PIX shows a slice of this texture, without and with compression enabled (default, DXT1/5 BC1/3). The same setup works fine on Windows and PS4." 

Likely this issue is Xbox specific as the DX12 editor does not show the same error.

Steps to Reproduce
  1. Download the licensee's repro from here - [Link Removed]
  2. Open in latest 4.20.3.
  3. In editor, the 2 textures in the "demo" level will be identical (regardless of if in DX11 or DX12 mode).
  4. Launch to Xbox, left hand texture will be corrupted.

Have Comments or More Details?

There's no existing public thread on this issue, so head over toAnswerHub just mention UE-67954 in the post.

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Unresolved
ComponentPlatform - Console
Affects Versions4.20.3
Target Fix4.22
CreatedJan 3, 2019
UpdatedJan 10, 2019