- Added a static UStaticMesh::RegisterMeshAttributes method to register attributes required by a static mesh.
- Added an additional attribute used by EditableMesh static meshes (material asset name for a polygon group).
- EditableStaticMeshAdapter internals now hold a copy of the static mesh material index they reference. This fixes an undo/redo bug.
- Removed FindOrAddMaterial from the adapter interface as it is no longer required; instead we hold the material asset name as a polygon group attribute and add/remove the material from the static mesh in the adapter.
- Fixed a bug when creating a polygon group when subdivided mesh rendering is enabled.
- Bumped the static mesh DDC key version.
#fyi Alexis.Matte
#rb none
[CL 3957998 by Richard TalbotWatkin in Dev-Geometry branch]