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Blendshape data lost when exporting skinned meshes with no weights

Open AmarilloArts opened this issue 3 months ago • 0 comments

Environments

  • UniVRM version: 0.130.0
  • Unity version: Unity-2022.3
  • OS: Windows 11

Describe the bug

If a mesh with blendshapes, but not actual bone mapping weights, is exported as part of a full character (an accessory, for example) then all the blendshape data will be lost in the exported VRM. The Blendshape names and values can still be inspected in the Unity Editor Inspector, but the actual data is lost, making the Blendshapes not produce any changes in the model.

Mesh with Blendshapes (but not bone weights): https://imgur.com/pZiYPmF Information in the exporter: https://imgur.com/xuSj8WM Exported mesh with empty non-functional Blendshapes: https://imgur.com/EiR5BZN

AmarilloArts avatar Sep 16 '25 04:09 AmarilloArts