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Votes
0
Found in
2020.3
2020.3.0f1
2021.1
2021.2
Issue ID
1321496
Regression
No
Mesh: last vertex index (e.g. 0xFFFF for 16-bit indices) makes the triangle invisible on some platforms
How to reproduce:
1. Open the user's attached "TerrainGen" project
2. Open the Scene "SampleScene"
3. Enter the Play Mode
4. Inspect a "Heightmap" GameObject's corners in the Scene view
Expected results: None of the corners have an invisible triangle
Actual results: One of the corners have an invisible triangle (the triangle that uses 0xFFFF vertex index)
Reproducible with: 2020.3.3f1, 2021.1.1f1, 2021.2.0a11
Could not test with: 2018.4.23f1, 2019.4.23f1 because of the script breaking when downgrading
Notes:
- As a workaround, you have to manually set the index format
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Resolution Note:
Max possible vertex index (i.e. 0xFFFF for 16-bit IndexFormat) is "undefined" on some graphics APIs/GPUs and makes the triangle be invisible. Will update Mesh.indexFormat docs to point this out.