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By Design
Votes
0
Found in
2019.4
2019.4.26f1
2020.3
2021.1
2021.2
Issue ID
1343645
Regression
No
[Android] Artifacts appear in texture Preview Window on Android Platform when selected Override ETC2 fallback is 16-bit
Reproduction steps:
1. Open the attached user's project "1054932 texture compression fallback.zip"
2. Switch the Platform to Android
3. In the Project Window select the "Gradient_builder_2.jpg"
4. In the Inspector window expand the texture Preview Window
5. Notice the compression artifacts appear when the Override ETC2 Fallback is selected as 16-bit
Expected result: Compression artifacts do not appear in texture Preview Window on Android Platform when selected Override ETC2 fallback is 16-bit
Actual result: Compression artifacts appear in texture Preview Window on Android Platform when selected Override ETC2 fallback is 16-bit (see attached Results.png)
Reproduces on: 2019.4.29f1, 2020.3.13f1, 2021.1.13f1, 2021.2.0b1
Notes:
-Issue does not reproduce when switching to iOS and windows Standalone Platforms
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Resolution Note:
In the Editor the ETC2 fallback path is used, so the textures looks similar to what you would see on a GLES2 device. This behavior is intentional.
16bit RGBA (R4G4B4A4) is not suitable for textures with gradients.
The special ETC2 fallback modes (16bit, 32bit-half-res) are only supported on Android, so the textures will look different on iOS.