Add GridPaintMask accessor to paint.c.

2 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_paint.h b/source/blender/blenkernel/BKE_paint.h
index bd31a62abf9..7bee131c63b 100644
--- a/source/blender/blenkernel/BKE_paint.h
+++ b/source/blender/blenkernel/BKE_paint.h
@@ -35,6 +35,7 @@
 struct Brush;
 struct MDisps;
 struct MeshElemMap;
+struct GridPaintMask;
 struct MFace;
 struct MultireModifierData;
 struct MVert;
@@ -68,6 +69,10 @@ int paint_is_face_hidden(const struct MFace *f, const struct MVert *mvert);
 int paint_is_grid_face_hidden(const unsigned int *grid_hidden,
 							  int gridsize, int x, int y);
 
+/* paint masks */
+float paint_grid_paint_mask(const struct GridPaintMask *gpm, unsigned level,
+							unsigned x, unsigned y);
+
 /* Session data (mode-specific) */
 
 typedef struct SculptSession {
diff --git a/source/blender/blenkernel/intern/paint.c b/source/blender/blenkernel/intern/paint.c
index 08d8479fd93..9001605d684 100644
--- a/source/blender/blenkernel/intern/paint.c
+++ b/source/blender/blenkernel/intern/paint.c
@@ -172,3 +172,12 @@ int paint_is_grid_face_hidden(const unsigned int *grid_hidden,
 			BLI_BITMAP_GET(grid_hidden, (y+1) * gridsize + x+1) ||
 			BLI_BITMAP_GET(grid_hidden, (y+1) * gridsize + x));
 }
+
+float paint_grid_paint_mask(const GridPaintMask *gpm, unsigned level,
+							unsigned x, unsigned y)
+{
+	int factor = ccg_factor(level, gpm->level);
+	int gridsize = ccg_gridsize(gpm->level);
+	
+	return gpm->data[(y*factor) * gridsize + (x*factor)];
+}