Fix issue discovered while investigating T39950:

Sculpt mode drawing fails after deleting a subsurf modifier
in sculpt mode and undoing.

This was quite difficult to spot. Main cause was that mesh data was not
synchronized properly between undo and sculpt code because we generated
a pbvh on derivedmesh invalidation without really refreshing the rest of
the data. This could result in undo and drawing operating on different
data.

To solve this and avoid bad level calls I had to move quite some code
around. Crazyspace is now moved to blenkernel, as did some sculpt calls
that make sure sculpt data are properly refreshed.

1 files changed, 0 insertions, 7 deletions

diff --git a/source/blender/editors/include/ED_sculpt.h b/source/blender/editors/include/ED_sculpt.h
index ab8a65e9ef9..8fcb228803b 100644
--- a/source/blender/editors/include/ED_sculpt.h
+++ b/source/blender/editors/include/ED_sculpt.h
@@ -46,15 +46,8 @@ void sculpt_get_redraw_planes(float planes[4][4], struct ARegion *ar,
                               struct RegionView3D *rv3d, struct Object *ob);
 void ED_sculpt_get_average_stroke(struct Object *ob, float stroke[3]);
 bool ED_sculpt_minmax(struct bContext *C, float min[3], float max[3]);
-int ED_sculpt_mask_layers_ensure(struct Object *ob,
-                                  struct MultiresModifierData *mmd);
 int do_sculpt_mask_box_select(struct ViewContext *vc, struct rcti *rect, bool select, bool extend);
 
-enum {
-	ED_SCULPT_MASK_LAYER_CALC_VERT = (1 << 0),
-	ED_SCULPT_MASK_LAYER_CALC_LOOP = (1 << 1)
-};
-
 /* paint_ops.c */
 void ED_operatortypes_paint(void);
 void ED_keymap_paint(struct wmKeyConfig *keyconf);