diff options
Diffstat (limited to 'source/blender/blenkernel/intern/subdiv.c')
| -rw-r--r-- | source/blender/blenkernel/intern/subdiv.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/subdiv.c b/source/blender/blenkernel/intern/subdiv.c index f847d62018a..82275b7305f 100644 --- a/source/blender/blenkernel/intern/subdiv.c +++ b/source/blender/blenkernel/intern/subdiv.c @@ -118,5 +118,28 @@ void BKE_subdiv_free(Subdiv *subdiv) openSubdiv_deleteTopologyRefiner(subdiv->topology_refiner); } BKE_subdiv_displacement_detach(subdiv); + if (subdiv->cache_.face_ptex_offset != NULL) { + MEM_freeN(subdiv->cache_.face_ptex_offset); + } MEM_freeN(subdiv); } + +int *BKE_subdiv_face_ptex_offset_get(Subdiv *subdiv) +{ + if (subdiv->cache_.face_ptex_offset != NULL) { + return subdiv->cache_.face_ptex_offset; + } + const int num_coarse_faces = + subdiv->topology_refiner->getNumFaces(subdiv->topology_refiner); + subdiv->cache_.face_ptex_offset = MEM_malloc_arrayN( + num_coarse_faces, sizeof(int), "subdiv face_ptex_offset"); + int ptex_offset = 0; + for (int face_index = 0; face_index < num_coarse_faces; face_index++) { + const int num_ptex_faces = + subdiv->topology_refiner->getNumFacePtexFaces( + subdiv->topology_refiner, face_index); + subdiv->cache_.face_ptex_offset[face_index] = ptex_offset; + ptex_offset += num_ptex_faces; + } + return subdiv->cache_.face_ptex_offset; +} |