[ltp] OpenGL/1.3 Mesa Woes on T40 w/ ATI 7500

[Brian Jensen]

Scott Jaderholm wrote:

>Hi guys,
>
>I am trying to get 1.3 Mesa or higher working on my T40 with ATI Radeon
>Mobility 7500. I am running ubuntu hoary, which uses a recent version of
>xorg. I changed /etc/X11/xorg.conf to use "radeon" instead of "ati".
>
>Right now I have:
>
>direct rendering: Yes
>OpenGL renderer string: Mesa DRI Radeon 20040929 AGP 1x x86/MMX/SSE2 TCL
>OpenGL version string: 1.2 Mesa 6.2.1
>
>glxgears -info gives me 500-600fps
>
>That's all a fine and dandy, but glest (a game) says it must have 1.3
>Mesa or higher. So I was trying to figure out how to get that to say 1.3
>Mesa, and I installed libosmesa4, which installed mesag3 and
>libglu1-mesa, but it uninstalled ubuntu-desktop, x-window-system-core
>xlibmesa-dri, and xlibmesa-glu.
>
>It gave me 1.4 Mesa something (I think 5.something) but no direct
>rendering, and glxgears -info gave me 20fps.
>
>So it looks like I can have 1.4 Mesa and no speed, or 1.2 Mesa and lots
>of speed. Why is this? I've heard there is no support by ATI for this
>video card, but I also heard xorg has an open source driver and that's
>what I'm using (I think, I didn't install the fglrx binary driver).
>
>Any help you guys can give would be greatly appreciated--I've spent the
>last two hours searching google and asking on IRC, with no luck so far.
>
>Sincerely,
>Scott
>
>  
>
sorry to dissapoint you, but as far i know the current open source 
drivers for the ati mobility 7500 only support opengl v1.2. I current 
run the cvs version of the driver from DRI, and that is still missing a 
few features needed to be opengl 1.3 compliant. Unfortunately ATI has 
decided not to release a driver for these chips because there already 
exists open source drivers.

As far as Mesa goes, the current version 6.21 supports upto opengl 1.5, 
but like i said, hardware exceleraton exists only up till version 1.2 
for DRI drivers.

ciao,
   Brian

-- 
Brian Jensen

http://home.in.tum.de/~jensen/