At first I thought it was referencing OpenGL! Haha! I almost panicked then because I'm altering it slightly to work on jailbroken iPod Touch/iPhone and the hardware for those devices has absolutely no support for OpenGL (that I know of).
It appears as though I was wrong: [url=http://m.youtube.com/#/watch?desktop_uri=http%3A%2F%2Fwww.youtube.com%2Fwatch%3F v%3D3Kr kU70J4rE&v=3KrkU70J4rE&gl=US]iPhone OpenGL demo[/url]
Also, google "iPhone OpenGL", without the quotes. O_O I had no idea!
EDIT: Hmmm...it seems that the URL tag for my hyperlink isn't working properly. Just copy/paste the URL into the URL bar of your browser.