diff options
Diffstat (limited to 'source/blender/blenkernel/intern/subdiv_ccg.c')
-rw-r--r-- | source/blender/blenkernel/intern/subdiv_ccg.c | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/source/blender/blenkernel/intern/subdiv_ccg.c b/source/blender/blenkernel/intern/subdiv_ccg.c index d5d5530c1ce..a1e218390c3 100644 --- a/source/blender/blenkernel/intern/subdiv_ccg.c +++ b/source/blender/blenkernel/intern/subdiv_ccg.c @@ -655,6 +655,7 @@ void BKE_subdiv_ccg_destroy(SubdivCCG *subdiv_ccg) MEM_SAFE_FREE(adjacent_vertex->corner_coords); } MEM_SAFE_FREE(subdiv_ccg->adjacent_vertices); + MEM_SAFE_FREE(subdiv_ccg->cache_.start_face_grid_index); MEM_freeN(subdiv_ccg); } @@ -1797,13 +1798,40 @@ void BKE_subdiv_ccg_neighbor_coords_get(const SubdivCCG *subdiv_ccg, int BKE_subdiv_ccg_grid_to_face_index(const SubdivCCG *subdiv_ccg, const int grid_index) { - // Subdiv *subdiv = subdiv_ccg->subdiv; /* UNUSED */ - // OpenSubdiv_TopologyRefiner *topology_refiner = subdiv->topology_refiner; /* UNUSED */ - SubdivCCGFace *face = subdiv_ccg->grid_faces[grid_index]; - - // const int face_grid_index = grid_index - face->start_grid_index; /* UNUSED */ + const SubdivCCGFace *face = subdiv_ccg->grid_faces[grid_index]; const int face_index = face - subdiv_ccg->faces; return face_index; } +const int *BKE_subdiv_ccg_start_face_grid_index_ensure(SubdivCCG *subdiv_ccg) +{ + if (subdiv_ccg->cache_.start_face_grid_index == NULL) { + const Subdiv *subdiv = subdiv_ccg->subdiv; + OpenSubdiv_TopologyRefiner *topology_refiner = subdiv->topology_refiner; + if (topology_refiner == NULL) { + return NULL; + } + + const int num_coarse_faces = topology_refiner->getNumFaces(topology_refiner); + + subdiv_ccg->cache_.start_face_grid_index = MEM_malloc_arrayN( + sizeof(int), num_coarse_faces, "start_face_grid_index"); + + int start_grid_index = 0; + for (int face_index = 0; face_index < num_coarse_faces; face_index++) { + const int num_face_grids = topology_refiner->getNumFaceVertices(topology_refiner, + face_index); + subdiv_ccg->cache_.start_face_grid_index[face_index] = start_grid_index; + start_grid_index += num_face_grids; + } + } + + return subdiv_ccg->cache_.start_face_grid_index; +} + +const int *BKE_subdiv_ccg_start_face_grid_index_get(const SubdivCCG *subdiv_ccg) +{ + return subdiv_ccg->cache_.start_face_grid_index; +} + /** \} */ |