On Sun, 2006-10-08 at 18:22 +1000, Daniel Kasak wrote:
> GhePeU wrote:
> 
> > And, secondly, do AIGLX or XGL work on such cards?
> 
> The r300 driver works very well with XGL. I have an X700 mobility, and
> XGL works *beautifully*. Just recently, I've started to get good results
> ( ie no hard lockups ) with AIGLX - but with the new 'beryl' window
> manager, which is Quinnstorm's fork of compiz. As Roland pointed out,
> with only a 64 bit bus you're not going to get astounding performance,
> so you might see some issues with heavy use of compiz effects, but then
> again I don't think it will be all that bad. As a point of comparison,
> I've been using compiz with AIGLX on an integrated Intel chip at work (
> in i845G ). It has no RAM of it's own, and can only see 'up to' 8MB of
> system RAM! It works fine with AIGLX - it's actually quite impressive.
> It's quite *unimpressive* with XGL - painfully slow. According this this
> page:
> http://www.sharkyextreme.com/hardware/motherboards/article.php/10703_1141511__3
> the i845G has a 64-bit memory bus ( if I'm reading it correctly ). So
> I'd say at least for compiz ( or beryl ) on AIGLX, your chosen Radeon
> should be sufficient.

I'm afraid that's comparing apples and oranges. Integrated chipsets tend
to be less affected by the current inefficiencies of the AIGLX
GLX_EXT_texture_from_pixmap implementation, probably because moving
stuff into and out of the framebuffer is cheaper than with discrete
cards.


-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer


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