Lightmapper being really weird and baking purple patches in completely dark rooms (color banding)

[SwiftKraft]

Does anyone know how to solve this and make it completely dark besides directly editing the lightmaps?

[andrew-lukasik]

1. Open currently active Universal Pipeline Asset (quality settings asset)
2. Scroll down to Post-processing
3. Change Grading Mode from Low Dynamic Range to High Dynamic Range
4. Change LUT size from 16 to 32
5. Make sure Post-Processing flag is enabled on your active camera

This will fix the issue for your Game view camera - not Scene view one.

You can read documentation on this here:

• High Dynamic Range (HDR) Output | Universal RP | 15.0.6
• Unity - Manual: High dynamic range
• Color Grading