Commit: 12bde317f4c94d48a154c8815ad910ccdd73be74
Author: Hans Goudey
Date: Fri Jun 24 16:39:58 2022 -0500
Branches: master
https://developer.blender.org/rB12bde317f4c94d48a154c8815ad910ccdd73be74
Fix T98949: Deleting vertex group in geometry nodes affects others
The vertex group indices stored in the weights need to be accounted for
when the vertex group list on the mesh changes.
===================================================================
M source/blender/blenkernel/intern/geometry_component_mesh.cc
===================================================================
diff --git a/source/blender/blenkernel/intern/geometry_component_mesh.cc
b/source/blender/blenkernel/intern/geometry_component_mesh.cc
index 88ea1af8a8d..9e64acf218b 100644
--- a/source/blender/blenkernel/intern/geometry_component_mesh.cc
+++ b/source/blender/blenkernel/intern/geometry_component_mesh.cc
@@ -1092,6 +1092,11 @@ class VertexGroupsAttributeProvider final : public
DynamicAttributesProvider {
for (MDeformVert &dvert : MutableSpan(mesh->dvert, mesh->totvert)) {
MDeformWeight *weight = BKE_defvert_find_index(&dvert, index);
BKE_defvert_remove_group(&dvert, weight);
+ for (MDeformWeight &weight : MutableSpan(dvert.dw, dvert.totweight)) {
+ if (weight.def_nr > index) {
+ weight.def_nr--;
+ }
+ }
}
return true;
}
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