On Fri, 16 Jul 2004 02:43:14 +0200
Dario Saccavino <dario@...> wrote:
> I successfully followed the instructions to enable DRI for my S3 ProSavag=
> on Debian, and I eventually got direct rendering and about 190 fps with=20
> glxgears in the default window, and 30 fps if 1024x768-maximized (both at=
Try 16bpp. The problem with integrated graphics chips is usually memory
bandwidth. IME with 16bpp it'll be more than twice as fast.
> Using the CPU frequency scaling for my Athlon XP-M and kernel 2.6, I trie=
> different combinations of CPU speed, AGP mode (1x to 4x) and AGP aperture=
> size, but I noticed that the performance was always the same.
That's because it's not using software rendering (see above).
> Is this what you would expect? Looking at the speed I suppose part of the=
> rendering is done in software, but then why is the performance independen=
> the CPU speed? If you need the chipset, lspci reports "S3 Inc. VT8375=20
> [ProSavage8 KM266/KL266]" with device 1631:e004.
I have the same. I havn't tried 32bpp in a while, but AFAIR your numbers
are ok for this color depth.
> Finally, is the result going to get better when the driver is finished? I=
> don't expect to play Doom 3, but chromium could be smoother...
Possibly. We may get page flipping to work at some point. Since memory
bandwidth is the limiting factor this could give a nice speedup.
| Felix K=FChling <fxkuehl@...> http://fxk.de.vu |
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