How to reproduce:
1. Set Color Space = Linear (Project Settings > Player).
2. Import any EXR image.
3. In TextureImporter, Change Texture Type to Lightmap.
Expected result: Lightmap doesn't get darker
Actual result: Lightmap gets darker
Reproducible with: 2020.1.0a15, 2020.3.15f1, 2021.1.16f1, 2021.2.0b5, 2022.1.0a4, 2022.1.0a6
Not reproducible with: 2019.4.29f1, 2020.1.0a14
Affected formats:
- RGBA Compressed ASTC
- RGBA Compressed ETC2 8 bits
- RGBA Compressed ETC2 4 bits
- RGBA Compressed BC7
- RGBA Compressed DXT5|BC3
- RGBA Crunched ETC2
- RGBA Crunched DXT5|BC3
- RGBA 32 bit
- RGB 24 bit
Non-affected formats:
- ARGB 16 bit
- RGB 16 bit
- RGBA Compressed ASTC HDR
- RGB HDR Compressed BC6H
Notes:
- Reproducible with URP and built-in render pipeline
- Reproduces on Windows and macOS