.Jacek, Cameroon and Curt, it appears I have a mean
combination of poorly supported video card and Red Hat
Linux 7.1. According to ATI, mach64 is not on ATI's
"todo list", not even for wintendo. Xfree86.org and
the DRI-people are looking for people who can do mach64
acceleration.
""�yvind Hagen\" \"" wrote in norwegian, and I translated:
>
> In article <[EMAIL PROTECTED]>, "Arnt Karlsen" <[EMAIL PROTECTED]>
> wrote:
> > ..how much texture memory do you feel a flightsim needs,
> > out of my 8 MB vram, as a starting point?
..here I'd like input on FlightGear requirements
> Like I said, this is hard to know in advance. Some programs
> (like gears) use none, while other programs use more than 40 MiB.
> Most OpenGL programmer usually do reasonable texture handling,
> only keeping the neccesary textures in the video card memory.
> However, some drivers fail here.
>
> Texture compression is also nice when you're low on vram,
> but I dont see ATI Rage supporting this.(couldnt see any
> such extention mentioned when you ran glinfo.)
>
> Remember that you will be able to play the game even if you
> dont have enough vram to hold the textures. You only get
> lower performance as textures are fed from AGP/system memory.
>
> > �yvind Hagen wrote in norwegian, and I translated:
> >> Consequently you cannot run ATI Rage at 1600x1200x16bpp with
> >> HW-accelleration. 3 x 1600 x 1200 x (16bpp/8) = 11250KiB > 8MiB
> >> ^ stencil- & Z-buffer + 2
> >> color buffer
> >
> > ..the "2" became a "3". What is it?
>
> I forgot Z- & stencil buffers in my last calculation.
>
> > ..3x800x600x(16/8)=2.75 MB + texture memory on top of that?
>
> Yup, this is what you should go for. Run 800x600x16 on your other X
> server.
>
> > ..a 50/50 split between texture and everything else -> 964x724.
> >
> > ..another possibility is 1280X1024, which needs 7.5 MB vram and gives 512 kB
> > texture memory?
>
> Believe me, far below what you need...
>
> > ..anyone else who know/have heard/believes/feels anything about
> > other buffers than those �yvind has mentioned, which are suppprted
> > by ATI Rage IIC agp 8MB???
>
> ATI Rage, afaik, supports _only_ front & back buffer, Z-buffer &
> stencilbuffer.
>
> Other nice handy buffers include accumulations buffer, pbuffer, multi
> color buffers. Then fun extras include extra set of font & back buffers
> which can be used for stereoscopic effects (3D with LCD glasses) or
> regular red/blue 3D glasses. All these buffers are supported by the
> more mature cards.
>
> Remember, we only speak of _hardware_ buffers. Some of these buffers
> available for ATI Rage, but only in SW( which defeats the whole point.)
>
>
> > ..X v4.x.x appears to make its own modelines on the fly.
> > How do I overrule the modeline generator in X v4.1.0?
>
> No idea.
>
..to fill in the good people of the FlightGear, plib
user mailing lists and news:no.it.os.unix.linux.diverse:
..os: Red Hat 7.1 with all known erratas to date,
I run XFree86-4.1.0-0.9.1 from rawhide at
1600x1200x24bpp@60Hz on a 8MB ATI Rage IIC agp card,
screen is an half burned Sony GDM-2038 that needs a
custom modeline to "yaw" it back in, from 1/3 out.
..this "yaw" trick is needed for _all_ modelines.
--
..med vennlig hilsen = with Kind Regards from Arnt... ;-)
Scenarios always come in sets of three:
best case, worst case, and just in case.
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