On Thursday 18 January 2007 18:32, Jan Stępień wrote: > Hi everyone, > > I've been using Xgl for quite a long time without any serious problems. > Recently I've tried to launch America's Army (emerged one, version > 2.5.0) on my box, but... > > ~ armyops > Xlib: extension "XFree86-DRI" missing on display ":1.0". > Cheat protection disabled > open /dev/[sound/]mixer: No such file or directory > WARNING: ALC_EXT_capture is subject to change! > Either GL_EXT_bgra or glDrawRangeElements not supported- bailing out. > History: > Exiting due to error > > Being quite disappointed I verified the first line of the output above > with glxinfo. And so... > > ~ glxinfo > name of display: :1.0 > Xlib: extension "XFree86-DRI" missing on display ":1.0". > display: :1 screen: 0 > direct rendering: No > <snip> > > It sounds rather unbelievably. I've got running Xgl with Beryl's > dazzling animations and I'm informed that despite having over 4000 FPS > on glxgears I have not got direct rendering. What the...?
glxgears is not a benchmark. it might be unbelievable, but it is true. If you use Xgl, no direct rendering there. > > Few days later I've accidentally launched Xorg (using startx script) > instead of my Xgl. When I entered my old, two-dimension desktop I > thought that trying America's Army over here, without Xgl, could tell me > something more (i.e. that something's wrong with my configuration or > whatever else). So I typed armyops in the terminal... And surprisingly > enough the game has started. Furthermore, the framerate was quite > satisfactory. that is normal too. > > After this quite long introduction I'll finally get to the point. I have > got two questions. > > 1. Is it possible to enable somehow direct rendering on Xgl, therefore > allowing OpenGL apps to work as ought to. nope. It isn't. Xgl and direct rendering are exclusive. One or the other. > > 2. If the answer to the first questions is "NO", then is there a method > of choosing which Xserver to use? Can I choose whether I'd like to > launch Xorg or Xgl? Or maybe I can even enable such choice in GDM login > screen? Yes. Or you can start a second X with xinit. So you would have one desktop (on F7) with Xgl and one (F8) with 'normal' X. Any reason, you are using Xgl? No Aiglx with your card? -- gentoo-user@gentoo.org mailing list
