diff options
Diffstat (limited to 'source/blender/blenkernel/intern/material.c')
-rw-r--r-- | source/blender/blenkernel/intern/material.c | 47 |
1 files changed, 19 insertions, 28 deletions
diff --git a/source/blender/blenkernel/intern/material.c b/source/blender/blenkernel/intern/material.c index 59530a6d6a6..796ed4f8316 100644 --- a/source/blender/blenkernel/intern/material.c +++ b/source/blender/blenkernel/intern/material.c @@ -653,38 +653,29 @@ Material **BKE_object_material_get_p(Object *ob, short act) /* if object cannot have material, (totcolp == NULL) */ totcolp = BKE_object_material_len_p(ob); - if (totcolp == NULL || ob->totcol == 0) { + if (totcolp == NULL || *totcolp == 0) { return NULL; } - /* return NULL for invalid 'act', can happen for mesh face indices */ - if (act > ob->totcol) { - return NULL; - } - if (act <= 0) { - if (act < 0) { - CLOG_ERROR(&LOG, "Negative material index!"); - } - return NULL; - } + /* Clamp to number of slots if index is out of range, same convention as used for rendering. */ + const int slot_index = clamp_i(act - 1, 0, *totcolp - 1); - if (ob->matbits && ob->matbits[act - 1]) { /* in object */ - ma_p = &ob->mat[act - 1]; + /* Fix inconsistency which may happen when library linked data reduces the number of + * slots but object was not updated. Ideally should be fixed elsewhere. */ + if (*totcolp < ob->totcol) { + ob->totcol = *totcolp; } - else { /* in data */ - - /* check for inconsistency */ - if (*totcolp < ob->totcol) { - ob->totcol = *totcolp; - } - if (act > ob->totcol) { - act = ob->totcol; - } + if (slot_index < ob->totcol && ob->matbits && ob->matbits[slot_index]) { + /* Use object material slot. */ + ma_p = &ob->mat[slot_index]; + } + else { + /* Use data material slot. */ matarar = BKE_object_material_array_p(ob); if (matarar && *matarar) { - ma_p = &(*matarar)[act - 1]; + ma_p = &(*matarar)[slot_index]; } else { ma_p = NULL; @@ -717,17 +708,17 @@ static ID *get_evaluated_object_data_with_materials(Object *ob) 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) { + + if (tot_slots_data == 0) { return NULL; } + + /* Clamp to number of slots if index is out of range, same convention as used for rendering. */ + const int slot_index = clamp_i(act - 1, 0, tot_slots_data - 1); const int tot_slots_object = ob->totcol; Material ***materials_data_ptr = BKE_id_material_array_p(data); |