Date: Wed, 29 Jun 2005 01:33:49 +0200 From: "Alexander S. Usov" <A.S.Usov@KVI.nl> To: Eric Anholt <eta@lclark.edu> Cc: freebsd-x11@freebsd.org Subject: Re: QT4 perfomance. Message-ID: <200506290133.49964.A.S.Usov@kvi.nl> In-Reply-To: <1120000916.24833.198.camel@leguin> References: <d9sfcg$3ng$2@sea.gmane.org> <1120000916.24833.198.camel@leguin>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday 29 June 2005 01:21, Eric Anholt wrote: > On Tue, 2005-06-28 at 23:34 +0200, Alexander S. Usov wrote: > > I think I am not the first to notice it, but still I think it's worth > > asking :) > > > > Thanks to the final release of qt4 I decided to give it a try and to > > watch some of their samples. I have tried it on 2 machines, one having > > matrox g550 in it, and other with radeon mobility 9000. > > > > It really sucks :) > > I mean visually it's quite nice, but even in the mainwindow demo (the one > > with a bunch of docked windows in it) it feels really *slow* and eats up > > 100% of cpu. HW acceleration is working on both machines. > > Does anybody knows if it is just due to sloppy coding of the demos, or we > > will have to wait till next xorg release with KAA it to be able to use > > it? The most funny part is that it works like a charm under windows. > > If they're using cairo, it's going to be slow. The cairo folks have > just started on performance, and they tell me there's a lot of > low-hanging fruit. And XAA makes render acceleration (the operations > that cairo pretty much consists of, in the absence of glitz) really hard > -- factor of 10 performance loss, in the few cases it can accelerate at > all. > > Hopefully EXA (the KAA-in-Xorg) will hit the tree soon and we can start > converting drivers -- I started on MGA for practice last night, and it > should be pretty easy. In the meantime, xorg-server-snap will provide > some limited improvements, thanks to better software fallbacks for > render (from Zack Rusin of trolltech). I can't find any signs of cairo in it, but the origin of the problem is probably same. Btw, as you have mentioned of mga -- I have send a separate letter on this, but it looks it didn't reached the list. Since some time now (probably since last xorg upgrade, but I am not really sure) I see the following warnings running glxgears/glxinfo (maybe some more, just not sure right now) libGL warning: 3D driver claims to not support visual 0x23 libGL warning: 3D driver claims to not support visual 0x24 libGL warning: 3D driver claims to not support visual 0x27 libGL warning: 3D driver claims to not support visual 0x28 libGL warning: 3D driver claims to not support visual 0x2b libGL warning: 3D driver claims to not support visual 0x2c libGL warning: 3D driver claims to not support visual 0x2f libGL warning: 3D driver claims to not support visual 0x30 The machine has mga g550 in it. I don't see any other problems/slowdowns othervise. Is it something to worry about? -- Best regards, Alexander.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200506290133.49964.A.S.Usov>