Re: Graphics Hardware

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Rob Jenkins (robj++at++sgi.com)
Tue, 23 Jun 1998 14:39:33 -0700

SCOTT OFRIEL wrote:
>
> To all:
> How can I know what kind of graphics hardware I have on my 150 Mhz R4400 Onyx2

That's Onyx I expect, not Onyx2.

> RE2 Irix 6.2? How do I know whether I have texture memory/graphics? How much
> texture memory do I need to have? (big question I'm sure). Our Performer
> programs now use a textured terrain database that use three different
> textures, that is pretty much the extent of our texture requirement.
>
> I did /usr/gfx/gfxinfo but it said nothing about texture graphics (hinv
> reports nothing as well).
>

gfxinfo tells you how many RM boards you have, on RE2 you can have
either RM4s or RM5s which are 4MB and 16MB of tex mem respectively.
Note, total texture memory doesn't scale with more RMs, only texture
paging and pixel fill bandwidth plus framebuffer size scale linearly
with more RMs.
Hinv just tells you want gfx board you have. As a side note, newer
machines ( iR, OCTANE etc ) give you much more info if you do gfxinfo -v
or -vv ).
The best info about what memory you need can be got from performer, do:

setenv PFNFYLEVEL 7
and then run your app, look at the loader stats for the textures you
loaded at start up, that's at least a measure of how much you use (
won't count for paging you might do although the pfStats will show that
). The loader stats show your usage as a % of the total available.

Cheers
Rob

> Thanks for all the help. Really appreciate it.
>
> Scott O'
>
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-- 
________________________________________________________________
Rob Jenkins mailto:robj++at++sgi.com
Silicon Graphics, Mtn View, California, USA
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