diff options
Diffstat (limited to 'source/blender/blenkernel/intern/material.c')
| -rw-r--r-- | source/blender/blenkernel/intern/material.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/material.c b/source/blender/blenkernel/intern/material.c index 37d47a984cc..73b64e6efb3 100644 --- a/source/blender/blenkernel/intern/material.c +++ b/source/blender/blenkernel/intern/material.c @@ -77,6 +77,7 @@ #include "DEG_depsgraph.h" #include "DEG_depsgraph_build.h" +#include "DEG_depsgraph_query.h" #include "GPU_material.h" @@ -700,6 +701,98 @@ Material *BKE_object_material_get(Object *ob, short act) return ma_p ? *ma_p : NULL; } +static ID *get_evaluated_object_data_with_materials(Object *ob) +{ + ID *data = ob->data; + /* Meshes in edit mode need special handling. */ + if (ob->type == OB_MESH && ob->mode == OB_MODE_EDIT) { + Mesh *mesh = ob->data; + if (mesh->edit_mesh && mesh->edit_mesh->mesh_eval_final) { + data = &mesh->edit_mesh->mesh_eval_final->id; + } + } + return data; +} + +/** + * On evaluated objects the number of materials on an object and its data might go out of sync. + * This is because during evaluation materials can be added/removed on the object data. + * + * For rendering or exporting we generally use the materials on the object data. However, some + * material indices might be overwritten by the object. + */ +Material *BKE_object_material_get_eval(Object *ob, short act) +{ + BLI_assert(DEG_is_evaluated_object(ob)); + const int slot_index = act - 1; + + if (slot_index < 0) { + return NULL; + } + ID *data = get_evaluated_object_data_with_materials(ob); + const short *tot_slots_data_ptr = BKE_id_material_len_p(data); + const int tot_slots_data = tot_slots_data_ptr ? *tot_slots_data_ptr : 0; + if (slot_index >= tot_slots_data) { + return NULL; + } + const int tot_slots_object = ob->totcol; + + Material ***materials_data_ptr = BKE_id_material_array_p(data); + Material **materials_data = materials_data_ptr ? *materials_data_ptr : NULL; + Material **materials_object = ob->mat; + + /* Check if slot is overwritten by object. */ + if (slot_index < tot_slots_object) { + if (ob->matbits) { + if (ob->matbits[slot_index]) { + Material *material = materials_object[slot_index]; + if (material != NULL) { + return material; + } + } + } + } + /* Otherwise use data from object-data. */ + if (slot_index < tot_slots_data) { + Material *material = materials_data[slot_index]; + return material; + } + return NULL; +} + +int BKE_object_material_count_eval(Object *ob) +{ + BLI_assert(DEG_is_evaluated_object(ob)); + ID *id = get_evaluated_object_data_with_materials(ob); + const short *len_p = BKE_id_material_len_p(id); + return len_p ? *len_p : 0; +} + +void BKE_id_material_eval_assign(ID *id, int slot, Material *material) +{ + Material ***materials_ptr = BKE_id_material_array_p(id); + short *len_ptr = BKE_id_material_len_p(id); + if (ELEM(NULL, materials_ptr, len_ptr)) { + BLI_assert_unreachable(); + return; + } + + const int slot_index = slot - 1; + const int old_length = *len_ptr; + + if (slot_index >= old_length) { + /* Need to grow slots array. */ + const int new_length = slot_index + 1; + *materials_ptr = MEM_reallocN(*materials_ptr, sizeof(void *) * new_length); + *len_ptr = new_length; + for (int i = old_length; i < new_length; i++) { + (*materials_ptr)[i] = NULL; + } + } + + (*materials_ptr)[slot_index] = material; +} + Material *BKE_gpencil_material(Object *ob, short act) { Material *ma = BKE_object_material_get(ob, act); @@ -1028,6 +1121,43 @@ void BKE_object_material_remap_calc(Object *ob_dst, Object *ob_src, short *remap BLI_ghash_free(gh_mat_map, NULL, NULL); } +/** + * Copy materials from evaluated geometry to the original geometry of an object. + */ +void BKE_object_material_from_eval_data(Main *bmain, Object *ob_orig, ID *data_eval) +{ + ID *data_orig = ob_orig->data; + + short *orig_totcol = BKE_id_material_len_p(data_orig); + Material ***orig_mat = BKE_id_material_array_p(data_orig); + + short *eval_totcol = BKE_id_material_len_p(data_eval); + Material ***eval_mat = BKE_id_material_array_p(data_eval); + + if (ELEM(NULL, orig_totcol, orig_mat, eval_totcol, eval_mat)) { + return; + } + + /* Remove old materials from original geometry. */ + for (int i = 0; i < *orig_totcol; i++) { + id_us_min(&(*orig_mat)[i]->id); + } + MEM_SAFE_FREE(*orig_mat); + + /* Create new material slots based on materials on evaluated geometry. */ + *orig_totcol = *eval_totcol; + *orig_mat = MEM_callocN(sizeof(void *) * (*eval_totcol), __func__); + for (int i = 0; i < *eval_totcol; i++) { + Material *material_eval = (*eval_mat)[i]; + if (material_eval != NULL) { + Material *material_orig = (Material *)DEG_get_original_id(&material_eval->id); + (*orig_mat)[i] = material_orig; + id_us_plus(&material_orig->id); + } + } + BKE_object_materials_test(bmain, ob_orig, data_orig); +} + /* XXX - this calls many more update calls per object then are needed, could be optimized */ void BKE_object_material_array_assign(Main *bmain, struct Object *ob, |