On Fri, Feb 12, 2010 at 8:58 AM, Damien Mir <[email protected]> wrote: > Now with : > - xserver 1.7.4 > - 2.6.33rc7 with KMS > - libdrm, mesa, xf86-video-ati from git > 2D and 3D are back OK on an R700 (HD4650 mobility (M98)) > > However I see 2 performance issues : > - glxgears tops at 1450fps (compared to ~2500fps without KMS) > - GL vsync is broken, ie visual tearing especially at playing large videos > (XV or OGL) with Kwin compositing enabled
GL vsync got broken with the DRI2 swap buffers merge: http://bugs.freedesktop.org/show_bug.cgi?id=26240 Alex > > Any thoughts on this ? > > >> On Sat, 30 Jan 2010 15:35:44 +0100 (CET) >> "Damien Mir" <[email protected]> wrote: >> >>> Hi, >>> >>> I just tried KMS with "radeon" driver, and 2D seems notably slow. >>> Widgets takes time to draw, scrolling in Dolphin or Firefox lags, as >>> if some 2D acceleration was not working alright. >> >> I use radeon KMS on an R600 (HD 3870) and all works really well. 2D as >> well as 3D (glxgear, tuxracer, nexuiz). Kernel is 2.6.32 and >> drm, mesa, xf86-video-ati are latest git HEAD. Maybe you need a newer >> version of the ati driver. >> >> harry >> >> _______________________________________________ >> xorg mailing list >> [email protected] >> http://lists.freedesktop.org/mailman/listinfo/xorg > > > _______________________________________________ > xorg mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/xorg > _______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
