Maniphest T88759

Basis shape key not behaving as expected
Closed, Duplicate
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Assigned To
None
Authored By
Luke Costello (lukostello)
Jun 2 2021, 11:32 PM
Tags
  • BF Blender
Subscribers
Luke Costello (lukostello)
Philipp Oeser (lichtwerk)

Description

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 750 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71

Blender Version
Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: rB02948a2cab44
Worked: (newest version of Blender that worked as expected)

Short description of error
Strange behavior related to basis of shape keys. When exporting this mesh it exports it as though "out" is the basis shape key. When you hit "+" to add a shape key it is by default the "out" shape key even though "out" is not the basis.

Exact steps for others to reproduce the error
just press "+" to add a shape key or export as gltf2 (probably other templates as well)

outercorners.zip98 KBDownload

Related Objects

Event Timeline

Luke Costello (lukostello) created this task.Jun 2 2021, 11:32 PM
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).Aug 20 2021, 1:15 PM

Can confirm in this particular file.

Similar to T67185: Shape Keys Behaving Like a Duplicate of Previous Key , I assume there have been modeling modifications on the mesh after adding the shapekey(s) that changed vertex count / topology?

This only has limited support and can lead to some issues, see the above report as well as https://blender.stackexchange.com/questions/19296/can-i-fix-broken-shape-keys-after-editing-basis.

That being said, you can fix this in you case by:

  • open your file
  • select OuterCorners object
  • enter editmode
  • select all vertices
  • select the Basis shapekey
  • from the menus, execute Vertex > Blend from Shape

If I do this, I can create a new shapekey that doesnt seem like a duplicate of the other shapekey...

Will merge this into T67185 [which has been closed for now because it is working as intended (even though this could be really improved upon...)]

Philipp Oeser (lichtwerk) closed this task as a duplicate of T67185: Shape Keys Behaving Like a Duplicate of Previous Key .Aug 20 2021, 1:15 PM