Help with HD 5750 3D accel?

[Alex Deucher]

On Thu, Jan 20, 2011 at 11:49 AM, Mark Knecht <markknecht at gmail.com> wrote:
> On Thu, Jan 20, 2011 at 8:10 AM, Mark Knecht <markknecht at gmail.com> wrote:
>> On Thu, Jan 20, 2011 at 8:02 AM, Alex Deucher <alexdeucher at gmail.com> wrote:
>>> On Thu, Jan 20, 2011 at 10:48 AM, Mark Knecht <markknecht at gmail.com> wrote:
>> <SNIP>
>>>> c2stable linux # emerge -pv xorg-server xorg-drivers xf86-video-ati
>>>> xf86-video-fbdev xf86-video-vesa mesa
>>>>
>>>> These are the packages that would be merged, in order:
>>>>
>>>> Calculating dependencies... done!
>>>> [ebuild   R   ] media-libs/mesa-7.9  USE="classic gallium nptl -debug
>>>> -gles -llvm -motif -pic (-selinux)" VIDEO_CARDS="radeon vmware -intel
>>>> -mach64 -mga -nouveau -r128 -savage -sis -tdfx -via" 0 kB
>>>> [ebuild   R   ] x11-base/xorg-server-1.9.2  USE="nptl udev xorg -dmx
>>>> -doc -ipv6 -kdrive -minimal -static-libs -tslib" 5,151 kB
>>>> [ebuild   R   ] x11-drivers/xf86-video-ati-6.13.2  0 kB
>>>
>>> 6.13.2 is too old.  you need git master for accel support on evergreen.
>>>
>>> Alex
>>>
>>
>> Ah, OK - I'll investigate how to do that under Gentoo. I've never ever
>> used a git driver before and 6.13.2 is the latest thing in portage.
>>
>> Is by chance a new release of xf86-video-ati imminent? I could
>> certainly wait a week or two for this if something is due out soon. If
>> it's going to be longer then I'd like to figure out how to get it onto
>> the system now.
>>
>> Cheers,
>> Mark
>>
>
> Thanks Alex!
>
> The Gentoo 'x11' overlay apparently gets it's code from git and using
> that with no other updates I find that 3d rendering is now enabled:
>
> mark at c2stable ~ $ cat /var/log/Xorg.0.log | grep render
> [    18.780] (II) RADEON(0): Direct rendering enabled
>
> Now, I know glxgears is frowned upon as a benchmark but my FPS didn't
> change with this driver. Should I have expected it to get any better?
>
> mark at c2stable ~ $ glxgears
> 939 frames in 5.0 seconds = 187.788 FPS
> 984 frames in 5.0 seconds = 196.753 FPS
> 959 frames in 5.0 seconds = 191.634 FPS
> 979 frames in 5.0 seconds = 195.707 FPS
> ^C
> mark at c2stable ~ $
>
> If it matters I haven't updated anything except xf86-video-ati. If I
> need newer X11, mesa, whatever, please let me know.
>
> Also, what sort of benchmarks can I run, or what program could I just
> use, to demonstrate that 3d accelleration is actually working? Can you
> point me toward some nice looking 3d demos or something that I might
> use to understand how well this is working?

you need mesa 7.10 or git master.  look at the renderer string in the
glxinfo output to see what 3D driver you are using.

Alex

>
> Thanks,
> Mark
>