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Won't Fix

Votes

0

Found in

2020.3.13f1

2021.1.12f1

2021.2.0b1

Issue ID

UUM-3786

Regression

No

Procedural Virtual Texture will sometimes become corrupted when using InvalidateRegion

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Reproduction steps:
1. Open attached Project
2. Press Play

Expected result: The terrain has no artifacts
Actual result: Some of the terrain tiles sometimes are loaded in corrupted

Reproducible with: 2020.3.13f1, 2021.1.12f1, 2021.2.0b1
Could not test with: 2019.4 (Could not downgrade)

Notes:
Additionally can be reproduced by using a Free look camera and flying around at high speeds until an Artifact is noticed
The Artifact goes away after being Invalidated

  1. Resolution Note:

    Will not be fixed for now, since PVT is in an experimental, unsupported state. Please reach out if this bug needs to be reopened and we can reassess the issue.

    For now, though, it looks like there's a workaround of forcing a refresh by calling an EvictRegion() (instead of InvalidateRegion()) on the entire virtual texture, or on the region that got corrupted. If this is an editor-only corruption that does not occur that often, this may be a good-enough (clunky) workaround for now?

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