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, 11 insertions, 0 deletions

diff --git a/intern/opensubdiv/opensubdiv_converter.cc b/intern/opensubdiv/opensubdiv_converter.cc
index 09880742895..5d43cafd1f3 100644
--- a/intern/opensubdiv/opensubdiv_converter.cc
+++ b/intern/opensubdiv/opensubdiv_converter.cc
@@ -574,6 +574,17 @@ int openSubdiv_topologyRefinerGetNumFaces(
 	return base_level.GetNumFaces();
 }
 
+int openSubdiv_topologyRefinerGetNumFaceVerts(
+        const OpenSubdiv_TopologyRefinerDescr *topology_refiner,
+        int face)
+{
+	using OpenSubdiv::Far::TopologyLevel;
+	using OpenSubdiv::Far::TopologyRefiner;
+	const TopologyRefiner *refiner = (const TopologyRefiner *)topology_refiner;
+	const TopologyLevel &base_level = refiner->GetLevel(0);
+	return base_level.GetFaceVertices(face).size();
+}
+
 int openSubdiv_topologyRefnerCompareConverter(
         const OpenSubdiv_TopologyRefinerDescr *topology_refiner,
         OpenSubdiv_Converter *converter)