[ltp] 2.6.1 + 3d acceleration

[Sebastian Kapfer]

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Sorry for attaching to this message, but I can't find the original by
Simon Wong.

> -----Original Message-----=20
> From: Simon Wong [mailto:linux@thoughtworx.com]
> Sent: Tuesday, February 03, 2004 4:26 PM
> To: Linux Thinkpad List
> Subject: Re: [ltp] 2.6.1 + 3d acceleration
>=20
>=20
> On Wed, 2004-02-04 at 01:46, Robert Svoboda wrote:
> > Note, that 3D performance went up remarkably for me with
> > 2.6 kernel.  I have R40 with ATI 7500, with 2.4 I got some
> > 700+ fps in glxgears, now I'm running at 1100+, great...
>=20
> Are you kidding?!?!?
>=20
>         $ glxgears
>         2464 frames in 5.0 seconds =3D 492.800 FPS
>         2609 frames in 5.0 seconds =3D 521.800 FPS
>         2692 frames in 5.0 seconds =3D 538.400 FPS
>         2689 frames in 5.0 seconds =3D 537.800 FPS
>=20
> :-(

That sounds like my usual results. I don't think the M7 is good for a
lot more performance in truecolour mode, and I won't run 16bpp just for
the happiness of my screensavers *g*. BTW: I got an additional ~150
glxgears fps by adding the following settings in XF86Config-4:

Section "Device"
	**usual blahblah**
	Option "AGPMode" "4"
	Option "AGPFastWrite" "on"
	Option "EnablePageFlip"
EndSection

3519 frames in 5.0 seconds =3D 703.800 FPS
3474 frames in 5.0 seconds =3D 694.800 FPS
3528 frames in 5.0 seconds =3D 705.600 FPS

I don't think glxgears hits the AGP that hard, so it must be the page
flipping option. Those changes also give Q3 a little speedup (2 fps in a
timedemo...). Seems like real-world apps^H^H^H^Hgamez don't pageflip as
much as glxgears does, so this optimization is a little superfluous. It
does help with the penis replacement factor though ;-)

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Best Regards,  | This signature is currently under construction.
 Sebastian     | Please check back later!

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