Sculpt: Move sculpt drawing to engines.

Only mask are handled by sculpt mode engine and are multiplied on top of the render.
There is room for improvement:
 - Shaded meshes don't have correct tangents or uvs.
 - Masks are in range 0.8 - 0.2 thus always darkening at least 20% the render.
 - It only uses the first material slot of the mesh.

1 files changed, 11 insertions, 11 deletions

diff --git a/source/blender/blenkernel/intern/pbvh.c b/source/blender/blenkernel/intern/pbvh.c
index 69028a0c96c..33901d3c0d0 100644
--- a/source/blender/blenkernel/intern/pbvh.c
+++ b/source/blender/blenkernel/intern/pbvh.c
@@ -2117,22 +2117,22 @@ void pbvh_vertex_iter_init(PBVH *bvh, PBVHNode *node,
 		vi->vmask = CustomData_get_layer(bvh->vdata, CD_PAINT_MASK);
 }
 
-void pbvh_show_diffuse_color_set(PBVH *bvh, bool show_diffuse_color)
+bool pbvh_has_mask(PBVH *bvh)
 {
-	bool has_mask = false;
-
 	switch (bvh->type) {
 		case PBVH_GRIDS:
-			has_mask = (bvh->gridkey.has_mask != 0);
-			break;
+			return (bvh->gridkey.has_mask != 0);
 		case PBVH_FACES:
-			has_mask = (bvh->vdata && CustomData_get_layer(bvh->vdata,
-			                                CD_PAINT_MASK));
-			break;
+			return (bvh->vdata && CustomData_get_layer(bvh->vdata,
+			                      CD_PAINT_MASK));
 		case PBVH_BMESH:
-			has_mask = (bvh->bm && (CustomData_get_offset(&bvh->bm->vdata, CD_PAINT_MASK) != -1));
-			break;
+			return (bvh->bm && (CustomData_get_offset(&bvh->bm->vdata, CD_PAINT_MASK) != -1));
 	}
 
-	bvh->show_diffuse_color = !has_mask || show_diffuse_color;
+	return false;
+}
+
+void pbvh_show_diffuse_color_set(PBVH *bvh, bool show_diffuse_color)
+{
+	bvh->show_diffuse_color = !pbvh_has_mask(bvh) || show_diffuse_color;
 }