Bug#390271: Resizing and scrolling very slow with r200
On Mon, 2006-10-09 at 17:20 +0200, Thierry Reding wrote:
> * Michel Dänzer wrote:
> > On Sun, 2006-10-08 at 18:18 +0200, Michel Dänzer wrote:
> > > On Sat, 2006-10-07 at 21:35 -0400, David Nusinow wrote:
> > >
> > > > Ideally though, just editing currently broken-for-EXA patch so
> > > > that it's only on when XAA is enabled is probably a better hack.
> > >
> > > Indeed.
> >
> > Actually, it should also be verified that disabling offscreen pixmaps is
> > even necessary or a good idea with XAA on integrated chipsets, in
> > particular i[89]xx.
>
> It seems to me that enabling offscreen pixmaps on my 852GM/855GM chipset
> doesn't make a difference, apart from X behaving slightly "different" when
> starting up compiz. It seems like up until compiz starts rendering, the
> windows are offset a little more than with offscreen pixmaps disabled.
Define 'offset'. I finally got around to trying this myself, and window
updates were regularly missed. So it seems the problem with XAA
offscreen pixmaps for GLX_EXT_tfp is not just about performance but
correctness.
--
Earthling Michel Dänzer | http://tungstengraphics.com
Libre software enthusiast | Debian, X and DRI developer
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