I tried a Google search on the subject; however I came up with nothing. Is there a way I can enable this option so I can enable good 3d performance while using Unity?
Your best bet might be to just use compiz instead of mutter. They way you can do that is to install ubuntu-tweak, find the session-control and replace mutter with compiz --replace.
Make sure you have compiz and compizconfig installed. In the compiz config settings, go to general, and choose undirect fullscreen windows.
To DIRECTLY answer your question, I don't think mutter can do that as yet.