Geometry Nodes can't match vertex groups by name #99929

Closed
opened 2022-07-23 14:34:08 +02:00 by Serge Lyatin · 8 comments

System Information
Operating system: win10
Graphics card: 1050 ti

Blender Version
Broken: 3.2.0

Short description of error
Order of vgroups plays bigger role than naming, which is inconvenient.

Exact steps for others to reproduce the error
In attached file reverse vertex groups order of selected object to activate its modifier, otherwise it is not working.
vgroup_order.blend

From scratch:

  • Add two empty vgroups (Group1, Group2) to default Cube
  • Add another object with same groups (Group1, Group2), but put Group2 in the first place
  • Load first Cube in this object via Geometry Nodes and create output for Group2 with 1.0 value
  • Set-up any modifier to use Group2 -> not working

Reverse vgroups order -> works OK.

**System Information** Operating system: win10 Graphics card: 1050 ti **Blender Version** Broken: 3.2.0 **Short description of error** Order of vgroups plays bigger role than naming, which is inconvenient. **Exact steps for others to reproduce the error** In attached file reverse vertex groups order of selected object to activate its modifier, otherwise it is not working. [vgroup_order.blend](https://archive.blender.org/developer/F13310057/vgroup_order.blend) From scratch: - Add two empty vgroups (Group1, Group2) to default Cube - Add another object with same groups (Group1, Group2), but put Group2 in the first place - Load first Cube in this object via Geometry Nodes and create output for Group2 with 1.0 value - Set-up any modifier to use Group2 -> not working # Reverse vgroups order -> works OK.
Author

Added subscriber: @SergeL

Added subscriber: @SergeL
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Added subscriber: @PratikPB2123

Added subscriber: @PratikPB2123
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Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'
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Order of vgroups plays bigger role than naming, which is inconvenient.

Thanks for the report. This looks like a request for feature than a bug report since vertex group data is store based on the indices (as far as I understand)
Will tag modules for the decision in case I've misunderstood your report.

> Order of vgroups plays bigger role than naming, which is inconvenient. Thanks for the report. This looks like a request for feature than a bug report since vertex group data is store based on the indices (as far as I understand) Will tag modules for the decision in case I've misunderstood your report.
Member

Added subscriber: @JacquesLucke

Added subscriber: @JacquesLucke
Member

This is a bug in the lattice modifier (and possibly other modifiers). It looks up the index of the vertex group in the wrong place (on the object instead of on the actual mesh). While this area is still in transition, it seems possible to fix this specific case.

This is a bug in the lattice modifier (and possibly other modifiers). It looks up the index of the vertex group in the wrong place (on the object instead of on the actual mesh). While this area is still in transition, it seems possible to fix this specific case.

This issue was referenced by 6f1cdcba85

This issue was referenced by 6f1cdcba8528753ba6be0869f342b0ba00a0f9db
Member

Changed status from 'Needs Developer To Reproduce' to: 'Resolved'

Changed status from 'Needs Developer To Reproduce' to: 'Resolved'
Jacques Lucke self-assigned this 2022-07-25 11:55:03 +02:00
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Reference: blender/blender#99929
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