I know this is quite advanced rendering stuffs... But imagine the possibilities if you included this.. I'm making a Top-down racing game where multiplayer would be awesome . But I need split screen. If you could render one location on a map onto a entity, or a tile, that would just sit on the screen I'd be sooooo happy lol
Plus you could have things like Cameras that you could see from a Remote Terminal and stuff on the map. As well as reflections.

But anyway, no rush (it will take ages to finish my game). And I'm not sure how to do this in OpenGL.. But I'm certain there is a way... I know more about DX you see(Evil Windows(Vista) user lol)...

Looking forward to posting more stuff on the forums