Actually, given that Cocoa Touch is all just drawn to textures which are rendered by the 3D chip, it's trivial. Not sure about apps that directly use 3D, but i

Actually, given that Cocoa Touch is all just drawn to textures which are rendered by the 3D chip, it's trivial. Not sure about apps that directly use 3D, but in the worst case they can draw to a restricted viewport. In light of this, even scaling should be pretty straightforward considering Apple's iron grip on the APIs.