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Fix meshes.new_from_object() not preserving materials

This commit is contained in:
Sergey Sharybin 2019-05-17 18:23:06 +02:00
parent 0c4ce8e55e
commit 848967c21d
Notes: blender-bot 2023-02-14 11:28:43 +01:00 
Referenced by issue #64735, constant crashes when assigning evaluated mesh to obj after recent depsgraph changes
Referenced by issue #64730, FBX Export: Materials slots aren't exported when dealing with rigged meshes
1 changed files with 12 additions and 0 deletions
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12
source/blender/blenkernel/intern/mesh_convert.c
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@ -1165,6 +1165,18 @@ Mesh *BKE_mesh_new_from_object_to_bmain(Main *bmain, Object *object)
* to the bmain. So we allocate new empty mesh in the bmain (which guarantess all the naming and
* orders and flags) and move the temporary mesh in place there. */
Mesh *mesh_in_bmain = BKE_mesh_add(bmain, mesh->id.name + 2);
/* NOTE: BKE_mesh_nomain_to_mesh() does not copy materials and instead it preserves them in the
* destinaion mesh .So we "steal" all related fields before calling it.
*
* TODO(sergey): We really better have a function which gets and ID and accepts it for the bmain.
*/
mesh_in_bmain->mat = mesh->mat;
mesh_in_bmain->totcol = mesh->totcol;
mesh_in_bmain->flag = mesh->flag;
mesh_in_bmain->smoothresh = mesh->smoothresh;
mesh->mat = NULL;
BKE_mesh_nomain_to_mesh(mesh, mesh_in_bmain, NULL, &CD_MASK_MESH, true);
/* Make sure user count from BKE_mesh_add() is the one we expect here and bring it down to 0. */