[Xorg] X on OpenGL

[Keith Packard]

Around 16 o'clock on Jul 11, Matthew Walton wrote:

> but isn't relying on things like vblank a 
> bit ill-advised in this age where we're increasingly going to be talking 
> to LCD panels over a DVI link?

DVI links are serial and repaint every pixel on the screen each frame, so
they do have an implicit 'retrace', even though the LCD screen itself holds
each pixel steady.

-keith


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