Jules, you warned about using offscreen bitmaps unless "you know what you are doing".
Well, it looks like I'm running into an issue as far as drawing on IPhone retina devices. They look blurry. I'm guessing its drawing to a much smaller bitmap than what these devices can handle. I've only tried in the simulator, but not sure why the actual device might differ. I'm not sure how to ask for a bitmap that would match the resolution properly I guess.
Oddly the splash screen also shows up wonky on these simulated device, its not drawn centered, and its large as well. However, IPad retina works fine(??!), but the simulator also draws it in a really big window.
Anyway, I can post a pic if it helps, but just wondered if I'm running into known issues (not necessarily juce, but generally speaking).