[jitter] Re: Framerate problems with triple head output.

Sorry, I don't have time to look at your patch in detail, but I would  
definitely recommend you do this in one window spanning the entire  
triple head device. With @sync enabled for jit.window (the default),  
the framerate with deteriorate by integer multiples, one for each  
window (e.g. with 3 windows and a refresh cycle of 60 hz/fps, you'll  
get 20fps where you would other wise be able to get 60fps).

And if you're using still images, as people have recommended send  
them to the card once (using an instance of jit.gl.texture,  
jit.gl.videoplane, or jit.gl.slab).

-Joshua