Well. I don't think it's fully working. Some GL apps (eg slune) run as
slow as when rendered indirectly. Slune output (LIBGL_DEBUG=verbose):

libGL: XF86DRIGetClientDriverName: 1.6.4 i915 (screen 0)
libGL: OpenDriver: trying /usr/X11R6/lib/modules/dri/i915_dri.so
libGL error: dlopen /usr/X11R6/lib/modules/dri/i915_dri.so failed 
(/usr/X11R6/lib/modules/dri/i915_dri.so: undefined symbol: _glapi_Dispatch)
libGL error: unable to find driver: i915_dri.so
* Soya * Using 8 bits stencil buffer

* Soya * version 0.11.2
* Using OpenGL 1.2 (1.3 Mesa 6.5.1)
*   - renderer : Mesa DRI Intel(R) 915GM 20050225
*   - vendor   : Tungsten Graphics, Inc
*   - maximum number of lights        : 8
*   - maximum number of clip planes   : 6
*   - maximum number of texture units : 8
*   - maximum texture size            : 2048 pixels


compiz output:
libGL: XF86DRIGetClientDriverName: 1.6.4 i915 (screen 0)
libGL: OpenDriver: trying /usr/X11R6/lib/modules/dri/i915_dri.so
drmOpenByBusid: Searching for BusID pci:0000:00:02.0
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 5, (OK)
drmOpenByBusid: drmOpenMinor returns 5
drmOpenByBusid: drmGetBusid reports pci:0000:00:02.0
libGL warning: 3D driver claims to not support visual 0x5b
libGL error: 
Can't open configuration file /etc/drirc: No such file or directory.
libGL error: 
Can't open configuration file /home/toby/.drirc: No such file or directory.
compiz.real: GLX_EXT_texture_from_pixmap is missing
compiz.real: Failed to manage screen: 0
compiz.real: No managable screens found on display :0.0

There's definitely some inconsistency there. compiz loads the driver
fine, gives out the libGL warning I mentioned above, but cannot find the
GLX_EXT_texture_from_pixmap extension. Slune just fails miserably to
load the driver. glxinfo is working as well, which is why it outputs
"direct rendering: Yes".

This makes me think that the fault is due to both. The version of Mesa
we're using looks for the files in the wrong place, but also suffers
from the bug (7169) at freedesktop.org; our fault displays symptoms of
both.

-- 
3d acceleration broken in Edgy Knot 1
https://launchpad.net/bugs/54858

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