Fix excessive dependency graph evaluation while painting strokes

Particularly noticeable when vertex painting with a subsurf modifier.

In some cases every sculpt or paint stroke step would evaluate the dependency
graph. This should only happen for redraws. Now more selectively choose if the
dependency graph should be evaluated to initialize the view context. Doing it
in the view context evaluation is somewhat hidden, now it's more explicit.

Differential Revision: https://developer.blender.org/D5844

1 files changed, 3 insertions, 1 deletions

diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index dc7b25392e8..28280fae3a8 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -521,7 +521,9 @@ int view3d_opengl_select(struct ViewContext *vc,
 
 /* view3d_select.c */
 float ED_view3d_select_dist_px(void);
-void ED_view3d_viewcontext_init(struct bContext *C, struct ViewContext *vc);
+void ED_view3d_viewcontext_init(struct bContext *C,
+                                struct ViewContext *vc,
+                                struct Depsgraph *depsgraph);
 void ED_view3d_viewcontext_init_object(struct ViewContext *vc, struct Object *obact);
 void view3d_operator_needs_opengl(const struct bContext *C);
 void view3d_region_operator_needs_opengl(struct wmWindow *win, struct ARegion *ar);