This was from initial BMesh merge, but should not have been added in since face normals are calculated and stored in the DerivedMesh.
Toggling editmode would remove poly-normals so its unlikely anything relies on this custom-data.
from Lawrence D'Oliveiro (ldo)
notes from tracker:
use bool for return type from BLI_remlink_safe, necessitating including BLI_utildefines.h in BLI_listbase.h
get rid of duplicate BLI_insertlink, use BLI_insertlinkafter instead.
A few places which were using BLI_insertlinkafter (actually BLI_insertlink), when it would be simpler to use BLI_insertlinkbefore instead.
besides performance in some cases.
* DAG_scene_sort is now removed and replaced by DAG_relations_tag_update in
most cases. This will clear the dependency graph, and only rebuild it right
before it's needed again when the scene is re-evaluated.
This is done because DAG_scene_sort is slow when called many times from
python operators. Further the scene argument is not needed because most
operations can potentially affect more than the current scene.
* DAG_scene_relations_update will now rebuild the dependency graph if it's not
there yet, and DAG_scene_relations_rebuild will force a rebuild for the rare
cases that need it.
* Remove various places where ob->recalc was set manually. This should go
through DAG_id_tag_update() in nearly all cases instead since this is now
a fast operation. Also removed DAG_ids_flush_update that goes along with
such manual tagging of ob->recalc.
Sculpt mode requires mask customdata layer for multires and ensures it
exists on entering sculpt mode. However, sculpt mode only considers
multires to be active if the level of subdivision is not zero, so it
does not add mask for unsubdivided multires meshes. If the multires
mesh is subdivided while in sculpt mode, no mask was present leading
to weird drawing and crash on use of the mask brush.
Fixed by doing the same thing in multires_subdivide_exec() that is
done in ED_object_modifier_add(), which is to check if sculpt mode is
active and add mask layer if so.
Fixes [#34190] Viewport artifacts when using Multiresolution modifier
projects.blender.org/tracker/index.php?func=detail&aid=34190&group_id=9&atid=498
When removing a skin or multires modifier, it skips deletion of the
associated CustomData layer if the object has any other modifiers of
that type. This check has been extended to all objects that use the
object's data.
Similarly, deleting higher multires levels and multires subdivision
will not update the maximum level of any other multires modifiers on
objects that link to the same mesh.
Note that modifier_apply_obdata() doesn't need any changes as it
does not allow applying to multi-user data.
Object joining has also been modified to synchronize multires levels
objects that share a mesh. This is needed because joining can
subdivide or delete levels in order to match the maximum level of the
join-from object to the join-to object.
Fixes bug [#31880] instance multiresolution modifier error.
http://projects.blender.org/tracker/index.php?func=detail&aid=31880&group_id=9&atid=498
Reviewed by Sergey:
http://codereview.appspot.com/6332047/
Actually there were two different issues involved here:
- Recently enabled Smooth modifier wasn't actually designed for curves, so
it in fact requires a bit bigger work to make it working.
For now added check for object's typy in this modifier and if it's not
mesh, it wouldn't try to use edges.
The reason why it worked in 3d viewport is that creating DM from curve while
displist is still ocntrcuting for would result in empty CDDM and that leads to
not taking edges into account, only vertexCos passed to modifier would be used.
This makes it behaving a bit differently from if it was a mesh, but still gives
quite reasonable result. Would leave actual fix for a guy who enabled smooth
modifier.
- Another issue is related on ensuring sculpt mask layer after applying modifier.
This shall happen only for meshes.
* The operator creates bones for each input edge (does not subdivide
them like the skin operator does), adds a fake root bone for skin
roots with multiple children.
* The operator adds vertex weight groups to the original mesh.
* Make copy_object_transform() public, used to match the armature
object to the mesh object.
Skin modifier documentation:
http://wiki.blender.org/index.php/User:Nicholasbishop/SkinModifier
