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Fixed in 2021.2.X

Fixed in 2019.4.X, 2020.2.X, 2021.1.X

Votes

0

Found in

2019.4

2019.4.15f1

2020.1

2020.2

2021.1

Issue ID

1299209

Regression

Yes

Severe visual artifacts when adjusting Blendshapes in Play mode with Skinned Motion Vectors

HD RP

-

Reproduction steps:
1. Open user attached Project
2. Open "Assets\Scenes\SampleScene"
3. Press Play and Select "CubeMorphBrokenTest" in the Hierarchy
4. Adjust the BlendShapes slider "Cube.002" in the Skinned Mesh Renderer component

Expected result: The shape is adjusted smoothly
Actual result: Severe visual artifacts distort the movement

Reproducible with: 2019.4.17f1, 2020.1.17f1, 2020.2.1f1, 2021.1.0b1
Could not test with: 2018.4 (Compiler errors)

Notes: Disabling Skinned Motion Vectors resolves the issue
Occurs when using HDRP
Does not occur with URP or Built-in

  1. Response avatar

    Resolution Note (fix version 2021.2):

    Fixed in 2021.2.0a4

  2. Response avatar

    Resolution Note (fix version 2020.2):

    Fixed in 2020.2.4f1

  3. Response avatar

    Resolution Note (fix version 2019.4):

    Fixed in 2019.4.26f1

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