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By Design
Votes
0
Found in
2020.3.46f1
Issue ID
UUM-32134
Regression
No
Texture2D.LoadRawTextureData error appears for PVR images
How to reproduce:
1. Download and open the attached project
2. Enter "Play" mode
3. Observe the console window
Expected outcome: No errors appear in the console window
Actual outcome: "UnityException: LoadRawTextureData: not enough data provided (will result in overread)." error appears
Reproduced with: 2020.3.46f1, 2021.3.21f1, 2022.2.11f1, 2023.1.0b8, 2023.2.0a6
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Resolution Note:
This is by design: in the second (failing) case, "failing.pvr" contains 11 mipmap levels while Unity creates a Texture2D with 12 mipmap levels for the indicated width/height, so it is indeed correct to say that not enough data was provided.
A way to resolve this is to indicate the number of desired mipmap levels in the Texture2D constructor.
For example, in this case, line 26 in PVR_ERROR.cs can be replaced with:
Texture2D image = new Texture2D(width, height, TextureFormat.ASTC_6x6, mipchain, false);
Using the above, the error disappears and the expected result can be seen.