Sculpt: Multires Displacement Eraser Brush

This brush deletes displacement information of the Multires Modifier,
resetting the mesh to the subdivision limit surface.
This can be use to easily delete parts of the sculpt or to fix
reprojection artifacts after applying a shrinkwrap.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8543

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/editors/sculpt_paint/sculpt_intern.h b/source/blender/editors/sculpt_paint/sculpt_intern.h
index caa858a5372..b11a7005fb5 100644
--- a/source/blender/editors/sculpt_paint/sculpt_intern.h
+++ b/source/blender/editors/sculpt_paint/sculpt_intern.h
@@ -100,6 +100,10 @@ const float *SCULPT_vertex_color_get(SculptSession *ss, int index);
 const float *SCULPT_vertex_persistent_co_get(SculptSession *ss, int index);
 void SCULPT_vertex_persistent_normal_get(SculptSession *ss, int index, float no[3]);
 
+/* Returs the info of the limit surface when Multires is available, otherwise it returns the
+ * current coordinate of the vertex. */
+void SCULPT_vertex_limit_surface_get(SculptSession *ss, int index, float r_co[3]);
+
 #define SCULPT_VERTEX_NEIGHBOR_FIXED_CAPACITY 256
 typedef struct SculptVertexNeighborIter {
   /* Storage */