Write to Vertex Groups from Geometry Nodes is not working anymore #95489
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Reference: blender/blender#95489
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 471.96
Blender Version
Broken: version: 3.1.0 Beta, branch: master, commit date: 2022-02-02 15:25, hash:
43b0ff3054and 3.2.0 Alpha, branch: master, commit date: 2022-02-03 13:54, hash:5920de9247Worked: 3.1.0 Beta, branch: master, commit date: 2022-01-28 23:47, hash:
03b57d3973Caused by
a985f558a6Short description of error
Writing to Vertex Groups from Geometry Nodes is not working anymore, even if the attribute is displayed correctly in the spreadsheet
Exact steps for others to reproduce the error
Open the attached file in the broken versions and you will not see any Vertex group change, but if you open it in the old version you will see the weights from GN
Write to VG.blend
version:03b57d3973
version:5920de9247:
Added subscriber: @AntonioJavierTorralbaMoreno
Added subscriber: @lichtwerk
Changed status from 'Needs Triage' to: 'Confirmed'
Can confirm, will check
Added subscriber: @SteffenD
Added subscriber: @JacquesLucke
Caused by
a985f558a6@JacquesLucke : mind checking?
Note that this is not technically supported behavior. Writing to vertex groups mostly worked accidentally before, therefore this behavior can't be relied upon in the long term.
However, given that this is quite easy to "fix", I'll do that. The other fix was not expected to change other behavior.
This issue was referenced by
b8a634cb1dChanged status from 'Confirmed' to: 'Resolved'
Thanks for taking a look at this and fixing it. Just to comment, I know this is a deprecated workflow, but , until we can drive other modifiers with attributes created on the fly, or have them in the form of nodes, this is a handy hack. For cloth sim for example.
Thanks again