A stab at some EXA documentation
jbarnes at virtuousgeek.org
Fri Aug 5 18:21:09 PDT 2005
On Friday, August 05, 2005 6:11 pm, Thomas Winischhofer wrote:
> > The AccelInit routine also needs to make sure that there's enough
> > offscreen memory for certain operations to function, like Xvideo,
> > which needs at least as much offscreen memory as there is
> > framebuffer memory?
> > [Is SiS broken here? It just checks to see if *any* offscreen
> > memory is present, and assumes that's enough.]
> No. XVideo memory needs are depending on how big the source video is.
> Your assumption in the previous paragraph is wrong.
So it just has to make sure that *some* offscreen memory is available,
right? Xv takes care of the rest?
> No, none that I know of. But there are a few DGA problems.
> That's not neccessary. The memory pool will be destroyed anyway.
> > EXA misc.
> > ---------
> > [FillRect, BlitRect, BlitTransRect need to check for EXA?]
> If you're thinking of the SiS driver, these are for DGA.
> > [ScreenInit sets FastVidCopyFrom?]
> If you're thinking of the SiS driver, that's SiS driver specific (not
> that it would hurt to implement this globally, though).
Ok, it looked that way (yes I just looked at SiS since it's the only EXA
capable driver in the tree), but for i810 it looks like there are
Thanks for looking, I'll update the doc.
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