diff options
| -rw-r--r-- | source/blender/blenkernel/intern/DerivedMesh.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/source/blender/blenkernel/intern/DerivedMesh.cc b/source/blender/blenkernel/intern/DerivedMesh.cc index 1fcf1bf1839..00a6fa6d178 100644 --- a/source/blender/blenkernel/intern/DerivedMesh.cc +++ b/source/blender/blenkernel/intern/DerivedMesh.cc @@ -1667,7 +1667,9 @@ static void editbmesh_calc_modifiers(struct Depsgraph *depsgraph, } else { Mesh *me_orig = mesh_input; - if (me_orig->id.tag & LIB_TAG_COPIED_ON_WRITE) { + /* Modifying the input mesh is weak, however as there can only be one object in edit mode + * even if multiple are sharing the same mesh this should be thread safe. */ + if ((me_orig->id.tag & LIB_TAG_COPIED_ON_WRITE) && (ob->mode & OB_MODE_EDIT)) { if (!BKE_mesh_runtime_ensure_edit_data(me_orig)) { BKE_mesh_runtime_reset_edit_data(me_orig); } |