Sergey Sharybin
ec4ba68730
The idea is simple: do not provide full topology to OpenSubdiv, leave edges creation to OpenSubdiv itself. This solves issues with non-manifold meshes which were known to fail, including the ones from T52059. On a positive side we can simplify our side of converter, keeping code shorter. it is still possible that we'll need to ensure all loops has same winding, but that is less things to worry about.