[PATCH] Ensure blitter quiescience before reading pixels from the framebuffer

[Dan Amelang]

On 8/3/07, Bernardo Innocenti <bernie at codewiz.org> wrote:
>
> Indeed, we've got very counter-intuitive results with oprofile.
> Over 30% of the time is being spent in fbFetch_r5g6b5(), which is
> funny given that the screen is 24bpp!

Hmm...I know certain models of the OLPC (at least the model I have)
use 16bpp. I see fbFetch_r5g6b5 at the top on mine also, for the
obvious reason that there are few "fast paths" in pixman for r5g6b5
(so you hit the slow, general code). Are you positive that your model
isn't using 16bpp?

Dan