On Mon, 2008-02-11 at 11:59 -0600, John Griessen wrote:
> > On Sun, 10 Feb 2008, Ales Hvezda wrote:
>    How how many
> >> people here (non-developers especially) have setup hardware accelerated
> >> OpenGL on their boxes?
> 
> I maybe have something going, not sure,  I did it a while back to get blender 
> to go.
> 
> my xorg.conf has this for an old Matrox G450
> 
> 
> Section "Module"
>       Load  "dbe"
>       Load  "freetype"
>       Load  "type1"
>          Load "glx"
> #        Load "dri"    #only used without xinerama
>       Load  "extmod"
>       Load  "fbdevhw"
>       Load  "record"
>       Load  "int10"
>       Load    "bitmap"
>       Load    "ddc"
>       Load    "vbe"
> 
> 
> Does glx do opengl?

GLX is GL over X protocol IIRC. Some apps will use / require it,
especially if running remotely. AIGLX is accelerated indirect GLX,
bot sure what the difference really is though.. other than that it is
used in compositing desktops.

The stack is really rather complicated. I think usually, for _fast_
OpenGL, the drivers / apps use "dri", which allows the apps to fiddle
directly with the video hardware, in cooperation with the X server.

libGL.so is what the apps will link with. This can be provided by mesa
(software rendering, or hardware accelerated if it has the right
backend, e.g. Intel cards), or a proprietary driver, such as the ones
from Nvidia or ATI.


-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



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