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