Commit: 438bcc6d28e975bbefae6f86f21824f9feed0b6c
Author: Mai Lavelle
Date: Tue Aug 23 14:49:10 2016 -0400
Branches: master
https://developer.blender.org/rB438bcc6d28e975bbefae6f86f21824f9feed0b6c
Cycles: Fix crash when empty mesh has subdivision
OpenSubdiv doesn't like empty meshes, so we need to be careful not to
subdivide when the mesh is empty.
===================================================================
M intern/cycles/render/mesh_subdivision.cpp
===================================================================
diff --git a/intern/cycles/render/mesh_subdivision.cpp
b/intern/cycles/render/mesh_subdivision.cpp
index f87425f..c8cc3ab 100644
--- a/intern/cycles/render/mesh_subdivision.cpp
+++ b/intern/cycles/render/mesh_subdivision.cpp
@@ -299,7 +299,9 @@ void Mesh::tessellate(DiagSplit *split)
bool need_packed_patch_table = false;
if(subdivision_type == SUBDIVISION_CATMULL_CLARK) {
- osd_data.build_from_mesh(this);
+ if(subd_faces.size()) {
+ osd_data.build_from_mesh(this);
+ }
}
else
#endif
@@ -468,7 +470,7 @@ void Mesh::tessellate(DiagSplit *split)
/* keep subdivision for corner attributes
disabled for now */
attr.flags &= ~ATTR_SUBDIVIDED;
}
- else {
+ else if(subd_faces.size()) {
osd_data.subdivide_attribute(attr);
need_packed_patch_table = true;
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