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Votes
0
Found in [Package]
10.0.0-preview.11
Issue ID
1261684
Regression
No
ShaderVariantCollection cannot be created the first time if a shader has a fallback shader
How to reproduce:
1. Open the attached project named "Case_12361684"
2. Right-click in the project view -> Create -> CUSTOM_NAME (Edits below)
3. Observe the error in the console window
4. Repeat Step 2
5. Observe that the Shader Variant Collection was created this time
Expected result: Shader Variant Collection is created on the first time
Actual result: It takes two tries to create a Shader Variant Collection
Reproducible with: 2019.4.4f1(7.3.1, 7.4.1), 2020.1.0b15(8.1.0, 9.0.0-preview.35), 2020.2.0a18(10.0.0-preview.11)
Could not test with: 2018.4.25f1(URP was not yet available and the project would not downgrade due to custom packages)
Notes:
1. The issue re-occurs every time the project is launched
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Resolution Note:
The user side scripts gather shader variants right after loading SRP assets, which resets the pipeline.
Restoring the asset and making the main camera render things once forces the shaders to reset their state. Shader data can be safely analysed after doing this.