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By Design

Votes

0

Found in

2021.3.36f1

2022.3.26f1

2023.2.19f1

6000.0.0b16

7000.0.0a1

Issue ID

UUM-70324

Regression

No

Speedtree8.shadergraph inside HDRP doesn't import properly and prevents HDRP from compiling when the project reaches the limit of shader variants

-

Steps to reproduce:
1. Open the “IN-68197_REPRO.zip” Project
2. In Project Settings > Graphics, assign the HDRP asset
3. Observe the Scene and Game views

Expected results: The Scene and Game views are rendering
Actual results: The Scene and Game views are not rendering

Reproducible with: 2021.3.36f1, 2022.3.26f1, 2023.2.19f1, 6000.0.b16

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Workaround:
1. Increase the Shader Variant Limit to a higher value, for example, 128 (Project Settings > ShaderGraph, or Preferences > Shader Graph)
1.1. If it auto reverts to 64 open any shader graph file and try again
2. Reimport all assets (Right-click inside the Project window, and select “Reimport all”)

Notes:
- Reproducible in an empty project
- To reproduce: Install HDPR package, set Shader Variant Limit to 64, reimport all assets
- Reproduction happens if the Shader Variant Limit is set to anything lower than 96

  1. Resolution Note:

    The shader variant limit can help users set reasonable limits for their project needs. The default limit value has changed from version to version. Once the version is downgraded from 2023.2.10f1 to 2022.3.20f1, the variant limit is reset to 128, so the issue no longer occurs.

    The speedtree8 shader has more than 64 variants, but the default limit is 128 to cover these variants. The rendering also does not break in the latest LTS versions, so we find this by design.

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