OpenSubdiv: Support for multiple materials in solid shading mode

Implementation is less optimal compared to non-opensubdiv drawing but
it is now as good as we can do it without affecting on how patches are
being created by OpenSubdiv.

1 files changed, 25 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c b/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c
index eb7c3bf6ffd..fcc46308efa 100644
--- a/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c
+++ b/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv.c
@@ -308,6 +308,31 @@ void ccgSubSurf_drawGLMesh(CCGSubSurf *ss, bool fill_quads,
 	}
 }
 
+int ccgSubSurf_getNumGLMeshBaseFaces(CCGSubSurf *ss)
+{
+	const OpenSubdiv_TopologyRefinerDescr *topology_refiner;
+	if (ss->osd_topology_refiner != NULL) {
+		topology_refiner = ss->osd_topology_refiner;
+	}
+	else {
+		topology_refiner = openSubdiv_getGLMeshTopologyRefiner(ss->osd_mesh);
+	}
+	return openSubdiv_topologyRefinerGetNumFaces(topology_refiner);
+}
+
+/* Get number of vertices in base faces in a particular GL mesh. */
+int ccgSubSurf_getNumGLMeshBaseFaceVerts(CCGSubSurf *ss, int face)
+{
+	const OpenSubdiv_TopologyRefinerDescr *topology_refiner;
+	if (ss->osd_topology_refiner != NULL) {
+		topology_refiner = ss->osd_topology_refiner;
+	}
+	else {
+		topology_refiner = openSubdiv_getGLMeshTopologyRefiner(ss->osd_mesh);
+	}
+	return openSubdiv_topologyRefinerGetNumFaceVerts(topology_refiner, face);
+}
+
 void ccgSubSurf_setSkipGrids(CCGSubSurf *ss, bool skip_grids)
 {
 	ss->skip_grids = skip_grids;