[Intel-gfx] Low performance for trapezoid-heavy stuff

[Clemens Eisserer]

I usually ask here to get an idea wether some problem is already known
- so that I don't file bug-reports for problems already known or even
fixed in master.
I never got answers, so I'll flood bugzilla (although nobody seems to
care there as well).

- Clemens

2009/4/23 Clemens Eisserer <linuxhippy at gmail.com>:
> Hi,
>
> Using the stuff deployed with fedora rawhide (2.6.29.1 + 2.7.0 on
> xorg-1.6.1) I experience very low performance for trapezoid heavy
> apps.
>
> E.g. Firefox renders this svg in about 50ms on XAA, whereas it takes
> about ~400ms with UXA:
> http://upload.wikimedia.org/wikipedia/commons/6/63/Periodic_table_%28german%29_4.svg
>
> Also QGears2 (a qt benchmark) only reports 7fps instead of 80 when
> running on EXA.
>
> Oprofile reports all time is spent in rasterize_edges, could that be
> related with the recent change of the cache-mode?
>
> Thanks, Clemens
>