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Fixed in 2021.2.X

Votes

0

Found in

2018.4

2019.4

2019.4.19f1

2020.2

2021.1

2021.2

Issue ID

1312251

Regression

No

[Mesh] Blendshapes added w/ AddBlendShapeFrame won't work properly with GPU skinning, unless mesh is modified in some other way

Mesh

-

How to reproduce:
1. Open the user's attached "TestCombineMeshes.zip" project
2. Open the "SampleScene" Scene
3. Enter Play Mode
4. Select the "Drag blend shape sliders" GameObject in the Hierarchy window
5. Drag one of the BlendShapes slider value to 1
6. Observe the Mesh in the Game view

Expected result: The Mesh is stretched at specific parts
Actual result: A lot of spikes are coming out of the Mesh

Reproducible with: 2018.4.31f1, 2019.4.20f1, 2020.2.4f1, 2021.1.0b6, 2021.2.0a4

Note:
- The issue is not reproducible if line 35 (mesh.vertices = mesh.vertices) in TestCombine.cs script in uncommented

  1. Response avatar

    Resolution Note (fix version 2021.2):

    Fixed in: 2022.1.0a2

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