diff options
Diffstat (limited to 'source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc')
| -rw-r--r-- | source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc index 815163ad19e..a888c6d11a2 100644 --- a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc +++ b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc @@ -6,6 +6,7 @@ /* Silence warnings from copying deprecated fields. Needed for an Object copy constructor use. */ #define DNA_DEPRECATED_ALLOW +#include "BKE_attribute.hh" #include "BKE_customdata.h" #include "BKE_deform.h" #include "BKE_lib_id.h" @@ -199,16 +200,23 @@ void OBJMesh::calc_smooth_groups(const bool use_bitflags) void OBJMesh::calc_poly_order() { - const int tot_polys = tot_polygons(); - poly_order_.resize(tot_polys); - for (int i = 0; i < tot_polys; ++i) { + const bke::AttributeAccessor attributes = bke::mesh_attributes(*export_mesh_eval_); + const VArray<int> material_indices = attributes.lookup_or_default<int>( + "material_index", ATTR_DOMAIN_FACE, 0); + if (material_indices.is_single() && material_indices.get_internal_single() == 0) { + return; + } + const VArraySpan<int> material_indices_span(material_indices); + + poly_order_.resize(material_indices_span.size()); + for (const int i : material_indices_span.index_range()) { poly_order_[i] = i; } - const MPoly *mpolys = export_mesh_eval_->mpoly; + /* Sort polygons by their material index. */ blender::parallel_sort(poly_order_.begin(), poly_order_.end(), [&](int a, int b) { - int mat_a = mpolys[a].mat_nr; - int mat_b = mpolys[b].mat_nr; + int mat_a = material_indices_span[a]; + int mat_b = material_indices_span[b]; if (mat_a != mat_b) { return mat_a < mat_b; } @@ -234,13 +242,6 @@ bool OBJMesh::is_ith_poly_smooth(const int poly_index) const return export_mesh_eval_->mpoly[poly_index].flag & ME_SMOOTH; } -int16_t OBJMesh::ith_poly_matnr(const int poly_index) const -{ - BLI_assert(poly_index < export_mesh_eval_->totpoly); - const int16_t r_mat_nr = export_mesh_eval_->mpoly[poly_index].mat_nr; - return r_mat_nr >= 0 ? r_mat_nr : NOT_FOUND; -} - const char *OBJMesh::get_object_name() const { return export_object_eval_.id.name + 2; |