How to toggle OpenGL fullscreen rendering in Lion?

Question

When my window goes fullscreen, what must I do to obtain an OpenGL rendering context (or change the existing one) for the new higher resolution view?

Right now in the window delegate I have

- (NSSize)window:(NSWindow *)window willUseFullScreenContentSize:(NSSize)proposedSize {
    return [theOpenGLView bounds].size;
}

Which is fairly pointless as I just get the same sized window on a massize linen background. I tried returning [[NSScreen mainScreen] frame].size but this just put my OpenGL window in the corner and the rest of the screen was covered by the greyish view background. I tried updating my glViewport and projection matrix and calling [myNSOpenGLContext update] but this didn't work either.

All the apple documentation seems to be for the old fullscreen system. I would appreciate if someone could enumerate the steps required to do this properly.

Answer 1

The problem was that my view wasn't autoresizing, so although the window took up the whole screen, the view was fixed. Now I have to figure out how to make the transition not look horrendous…