- std::set<Renderable *> renderables;
- SortOrder order;
- DepthReference reference;
- mutable std::vector<SortedRenderable> sorted_cache;
+ std::vector<Renderable *> content;
+ SortOrder order = BACK_TO_FRONT;
+ DepthReference reference = FURTHEST;
+ mutable std::map<const Camera *, std::vector<SortedRenderable> > sorted_cache;