Re: Rqst Info on O2 Video in Performer

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Rob Jenkins (robj++at++sgi.com)
Mon, 24 May 1999 00:15:13 -0700

Angus Dorbie wrote:
>
> Have you tried dmvtO2.c in
> sample/pguide/libpf/C/
>
> This uses the O2 fast digital media buffers for video texturing.
> At least that's what the comments say.
>

It does indeed, it doesn't use use the Performer mechanism for creating
a Pbuffer, doesn't have a Performer scene graph, it's not MP safe ( and
it should be C++ :-) ) but, it does do all the VL/GLX nitty gritty which
is much the biggest battle.

Cheers
Rob

> CHeers,Angus.
>
> Randy Stiles wrote:
> >
> > Hi,
> >
> > Are there any working examples out there for using SGI O2 video
> > inside Performer?
> >
> > I have been modifying
> > /usr/share/Performer/src/pguide/libpf/C/siriusvtex.c
> > to take out the Sirius video card dependencies and use the O2
> > video card, since siriusvtex.c has the right calls to GLX and
> > vl library routines as a start.
> >
> > However, it almost seems as if the underlying performer methods,
> > such as pfTexFormat(), pfTexLoadMode(), and pfTexLoadSize() are
> > hardwired underneath for sirius video cards.
> >
> > I also keep seeing the message
> >
> > pfTexture::subload() not supported on this graphics hardware
> >
> > Any help is greatly appreciated,
> >
> > -Randy
> > --
> > // Randy Stiles mailto:stiles++at++ict.atc.lmco.com O/L922 B/255
> > // Lockheed Martin Advanced Technology Center 3251 Hanover Street
> > // office: 650.354.5256 fax: 650.354.5235 Palo Alto, CA 94304-1192
> > // http://vet.parl.com/~vet/
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> --
> "Microsoft's system was like a forest that hadn't had a controlled
> burn in decades, just waiting for one person with a match to turn
> it into a disaster. Melissa was Microsoft's fault. They left their
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> and did nothing." -- Bruce Perens
>
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> http://www.dorbie.com/
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-- 
________________________________________________________________
Rob Jenkins	
SGI Graphics Consulting
Tel 0118 925 7621	
mailto:robj++at++sgi.com
http://www.sgi.co.uk

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