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By Design
Votes
0
Found in
2020.1.0a24
2020.2.5f1
2020.3
2021.1
2021.2
Issue ID
1319464
Regression
Yes
Single side faced GameObjects casts harsh shadows when the lighting was bakes using Progressive GPU Lightmapper
Jira: https://jira.unity3d.com/browse/GFXGI-494
How to reproduce:
1. Open the attached "1319464_Repro" project
2. Open the Scene "SampleScene"
3. Open the Lighting settings (Window->Rendering->Lighting Settings)
4. Make sure the Lightmapper is set to Progressive GPU
5. Bake the light ("Generate Lighting" button at the bottom right of the Lighting window)
6. Inspect the shadows in the Scene view
Expected results: If the shadows are generated they're smooth
Actual results: The generated shadows are rough/pixelated
Reproducible with: 2020.1.0a24, 2020.3.1f1, 2021.1.0f1, 2021.2.0a9
Not reproducible with: 2018.4.33f1, 2019.4.22f1, 2020.1.0a23
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Resolution Note:
This is a texel validity issue and is by design. Enabling the Double Sided Global Illumination on the material of the shadow caster/receiver and rebaking GI fixes the issue. Please read more on this matter here: https://forum.unity.com/threads/faq-blocky-artifacts-appear-when-i-bake-a-scene-how-can-i-fix-them.951444/