const Lighting *get_lighting() const { return lighting; }
const DepthTest *get_depth_test() const { return depth_test; }
const Blend *get_blend() const { return blend; }
const Lighting *get_lighting() const { return lighting; }
const DepthTest *get_depth_test() const { return depth_test; }
const Blend *get_blend() const { return blend; }