Re: help getting hw-accel OpenGL on Pismo
On Wed, 2003-09-10 at 02:34, John M. Gabriele wrote:
> Michel Dänzer wrote:
> > On Tue, 2003-09-09 at 16:55, John M. Gabriele wrote:
> >
> >>| The trick is: 16 bit color only! Yes, that will get DRM
> >>| going on an 8MB Rage128 Mobility.
> >>
> >>I'll try that when I get home,
>
> Yup. It works for me in 16-bit. At least, I think it works...
> glxgears, nearly full-screen gives me 69 frames / second,
The glxgears needs to stay in the original size for the framerates to be
anything like comparable, but this does sound like hardware
acceleration. You can compare with indirect software rendering by
setting the LIBGL_ALWAYS_INDIRECT environment variable.
> and now it doesn't properly clean up the desktop after itself.
That's a bug.
> OpenGL renderer string: Mesa DRI Rage128 20010405 M3 AGP 1x
> OpenGL version string: 1.2 Mesa 3.4.2
>
> That's weird -- should be AGP 2x, no?
Only if you use Option "AGPMode" "2" for the X server. Try on your own
risk.
> (hmm... also weird: still that old 3.4.2 (!?))
That's the Mesa version the 3D driver is based on.
> and /var/log/XFree86.0.log shows:
>
> (II) PCI: 00:10:0: chip 1002,4c46 card 1002,4c46 rev 02 class 03,00,00 hdr 00
>
> (--) PCI:*(0:16:0) ATI Rage 128 Mobility LF rev 2, Mem @ 0xa4000000/26,
> 0xa0000000/14, I/O @ 0x0400/8, BIOS @ 0xa0020000/17
>
> (Since it's referring to the ATI as on the PCI bus, I'm now guessing that
> the AGP port must somehow or other be considered on the PCI bus...
AGP is basically extended PCI as far as software is concerned.
> Funny thing is, my desktop and jpegs don't seem to look any different to me. (?)
> Maybe it's me, or maybe this old Pismo LCD, dunno. :)
Indeed, the panel probably only does 6 bits per color component. AFAIK
this was the case for most affordable panels until recently at least.
--
Earthling Michel Dänzer \ Debian (powerpc), XFree86 and DRI developer
Software libre enthusiast \ http://svcs.affero.net/rm.php?r=daenzer
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