diff options
Diffstat (limited to 'source/blender/blenkernel/intern/object_dupli.cc')
| -rw-r--r-- | source/blender/blenkernel/intern/object_dupli.cc | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/source/blender/blenkernel/intern/object_dupli.cc b/source/blender/blenkernel/intern/object_dupli.cc index 5efd44c620b..3d35cea1e93 100644 --- a/source/blender/blenkernel/intern/object_dupli.cc +++ b/source/blender/blenkernel/intern/object_dupli.cc @@ -87,6 +87,9 @@ struct DupliContext { Object *obedit; Scene *scene; + /** Root parent object at the scene level. */ + Object *root_object; + /** Immediate parent object in the context. */ Object *object; float space_mat[4][4]; /** @@ -138,6 +141,7 @@ static void init_context(DupliContext *r_ctx, r_ctx->scene = scene; r_ctx->collection = nullptr; + r_ctx->root_object = ob; r_ctx->object = ob; r_ctx->obedit = OBEDIT_FROM_OBACT(ob); r_ctx->instance_stack = &instance_stack; @@ -264,8 +268,9 @@ static DupliObject *make_dupli(const DupliContext *ctx, dob->no_draw = true; } - /* Random number. - * The logic here is designed to match Cycles. */ + /* Random number per instance. + * The root object in the scene, persistent ID up to the instance object, and the instance object + * name together result in a unique random number. */ dob->random_id = BLI_hash_string(dob->ob->id.name + 2); if (dob->persistent_id[0] != INT_MAX) { @@ -277,8 +282,8 @@ static DupliObject *make_dupli(const DupliContext *ctx, dob->random_id = BLI_hash_int_2d(dob->random_id, 0); } - if (ctx->object != ob) { - dob->random_id ^= BLI_hash_int(BLI_hash_string(ctx->object->id.name + 2)); + if (ctx->root_object != ob) { + dob->random_id ^= BLI_hash_int(BLI_hash_string(ctx->root_object->id.name + 2)); } return dob; |