Add an option to free scene without doing id-counters

This is similar to some other datablocks. Mainly applies to collections,
so freeing scene does not involve changing any non-directly owned data.

There are two main usecases foreseen for the future:

- Less CPU ticks on bmain free, where everything is freed anyway and
  there is no need to preserve id counters.

- Easier freeing of temporary data, including data which is used by
  depsgraph's copy-on-write mechanism.

Neither of those are currently implemented, but will be shortly.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_collection.h b/source/blender/blenkernel/BKE_collection.h
index 35d8f336207..0adac4500f8 100644
--- a/source/blender/blenkernel/BKE_collection.h
+++ b/source/blender/blenkernel/BKE_collection.h
@@ -46,7 +46,7 @@ struct SceneCollection *BKE_collection_add(struct Scene *scene, struct SceneColl
 bool BKE_collection_remove(struct Scene *scene, struct SceneCollection *sc);
 struct SceneCollection *BKE_collection_master(const struct Scene *scene);
 void BKE_collection_rename(const struct Scene *scene, struct SceneCollection *sc, const char *name);
-void BKE_collection_master_free(struct Scene *scene);
+void BKE_collection_master_free(struct Scene *scene, const bool do_id_user);
 void BKE_collection_object_add(const struct Scene *scene, struct SceneCollection *sc, struct Object *object);
 void BKE_collection_object_add_from(struct Scene *scene, struct Object *ob_src, struct Object *ob_dst);
 void BKE_collection_object_remove(struct Main *bmain, const struct Scene *scene, struct SceneCollection *sc, struct Object *object, const bool free_us);