std::map<Effect *, std::string> effect_ids;
std::map<Effect *, GLuint> effect_output_textures;
std::map<Effect *, std::vector<Effect *> > outgoing_links;
std::map<Effect *, std::string> effect_ids;
std::map<Effect *, GLuint> effect_output_textures;
std::map<Effect *, std::vector<Effect *> > outgoing_links;