diff options
| -rw-r--r-- | source/blender/blenkernel/intern/mesh_legacy_convert.cc | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/source/blender/blenkernel/intern/mesh_legacy_convert.cc b/source/blender/blenkernel/intern/mesh_legacy_convert.cc index 2fc984997b8..58096081ad1 100644 --- a/source/blender/blenkernel/intern/mesh_legacy_convert.cc +++ b/source/blender/blenkernel/intern/mesh_legacy_convert.cc @@ -187,6 +187,12 @@ static void convert_mfaces_to_mpolys(ID *id, totpoly = totface_i; mpoly = (MPoly *)MEM_calloc_arrayN((size_t)totpoly, sizeof(MPoly), "mpoly converted"); CustomData_add_layer(pdata, CD_MPOLY, CD_ASSIGN, mpoly, totpoly); + int *material_indices = static_cast<int *>( + CustomData_get_layer_named(pdata, CD_PROP_INT32, "material_index")); + if (material_indices == nullptr) { + material_indices = static_cast<int *>(CustomData_add_layer_named( + pdata, CD_PROP_INT32, CD_SET_DEFAULT, nullptr, totpoly, "material_index")); + } numTex = CustomData_number_of_layers(fdata, CD_MTFACE); numCol = CustomData_number_of_layers(fdata, CD_MCOL); @@ -232,7 +238,7 @@ static void convert_mfaces_to_mpolys(ID *id, mp->totloop = mf->v4 ? 4 : 3; - mp->mat_nr = mf->mat_nr; + material_indices[i] = mf->mat_nr; mp->flag = mf->flag; #define ML(v1, v2) \ @@ -564,6 +570,8 @@ static int mesh_tessface_calc(CustomData *fdata, mpoly = (const MPoly *)CustomData_get_layer(pdata, CD_MPOLY); mloop = (const MLoop *)CustomData_get_layer(ldata, CD_MLOOP); + const int *material_indices = static_cast<const int *>( + CustomData_get_layer_named(pdata, CD_PROP_INT32, "material_index")); /* Allocate the length of `totfaces`, avoid many small reallocation's, * if all faces are triangles it will be correct, `quads == 2x` allocations. */ @@ -602,7 +610,7 @@ static int mesh_tessface_calc(CustomData *fdata, lidx[1] = l2; \ lidx[2] = l3; \ lidx[3] = 0; \ - mf->mat_nr = mp->mat_nr; \ + mf->mat_nr = material_indices ? material_indices[poly_index] : 0; \ mf->flag = mp->flag; \ mf->edcode = 0; \ (void)0 @@ -625,7 +633,7 @@ static int mesh_tessface_calc(CustomData *fdata, lidx[1] = l2; \ lidx[2] = l3; \ lidx[3] = l4; \ - mf->mat_nr = mp->mat_nr; \ + mf->mat_nr = material_indices ? material_indices[poly_index] : 0; \ mf->flag = mp->flag; \ mf->edcode = TESSFACE_IS_QUAD; \ (void)0 @@ -711,7 +719,7 @@ static int mesh_tessface_calc(CustomData *fdata, lidx[2] = l3; lidx[3] = 0; - mf->mat_nr = mp->mat_nr; + mf->mat_nr = material_indices ? material_indices[poly_index] : 0; mf->flag = mp->flag; mf->edcode = 0; |