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Votes

0

Found in

2019.4

2020.3

2020.3.31f1

2021.2

2022.1

2022.2

Issue ID

1414822

Regression

No

Shadows are rendered behind a Mesh when its Shader is Unlit, and the Render Queue is set to Transparent

Progressive Lightmapper

-

How to reproduce:
1. Open the user's attached "bake_alpha" project
2. Open the "bake" Scene
3. Open the "Window -> Rendering -> Lighting" window from the menu
4. Select "Generate Lighting" to precompute lighting data
5. Observe the generated lighting on the Plane behind the Mesh in the Scene view

Expected results: The light behind the Mesh is rendered without any shadows or artifacts
Actual result: Shadow is rendered behind the Mesh

Reproducible with: 2019.4.37f1, 2020.3.32f1, 2021.2.18f1, 2022.1.0b14, 2022.2.0a9

  1. Resolution Note:

    This is expected. Resulting shadow artifacts on the ground are caused by the backfaces on the transparent plane. To mitigate this issue enable Double Sided Global Illumination toggle in the Material inspector. Alternatively, create a new Lightmap Parameters asset, assign it to the ground mesh, and tweak the Backface Tolerance value.

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