Re: [pygame] flip() and opengl

["Cameron Blackwood" <korg@xxxxxxxxxxxxx>]

David writes:
  |
  | 
  | What does the flip() function do exactly, in OpenGL mode?

flip() toggles the buffer but on _some_ OS's it also _waits_ until the
screen is being displayed.

On windows, the _max_ fps I can get is 75 because thats
what my monitor operates at and opengl's flip() waits until the
monitor is displaying the buffer i just flipped to.

On unix, the same code can get 200+ because it doesnt wait for
the montior to display (but my monitor still works at only 75 fps,
so those extra updates dont get me anything). (Except maybe glitches
if I flip mid frame.)

Check out page 22 of the red book, "The Refresh that Pauses".

  | Thanks
  | David

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