For historical reasons, the BVH tree considered face sharpness similar to material indices and tried to make the value match for all faces in a node. This is unnecessary because PBVH drawing supports mixed sharpness within a node.
For historical reasons, the BVH tree considered face sharpness similar to material indices and tried to make the value match for all faces in a node. This is unnecessary because PBVH drawing supports mixed sharpness within a node.