HELP: Mirror cone

Is there possibility in OpenGL to add an atribute to created cone which will make my cone looked like cone with mirror layer.
:confused: Thank you for any suggestions.

Well, I can’t really understand if you want to mirror your cone or objects around the cone be reflected on it. For the first case I think you should just draw another cone. For the second you need an environment map which you’ll apply it as a texture on the cone.