Re: 2Pipe Stereo Rendering into ONE window

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Angus Dorbie (dorbie++at++sgi.com)
Mon, 27 Sep 1999 09:36:10 -0700


No you cannot do this without a performance penalty which makes it
impractical unless you have fairly slow frame rates in mind. At 20 Hz or
less readback might become interesting.

There is another solution :-)
It would be possible to create custom vfo files such that the output to
video would produce copmlimentary fields in a stereo display. You would
then just genlock them and T the connectors together. The timing
shouldn't be that big an issue given that you have different fields from
each pipe. This should produce passable results although the sync
information would be boosted. Hopefully the analog output would match
sufficiently for your purposes, you have a LUT there to help tune this.

Cheers,Angus.

till bergmann wrote:
>
> Hi pfAll,
> in the Performer Programmer's Guide I found that I should use two pfPipes
> with our 2xRM4 Onyx RE2 to achieve highest stereo rendering performance.
> There is suggested the following code fragment to create the pfPipes:
>
> leftPipe = pfGetPipe(0);
> leftView = pfNewChan(leftPipe);
> rightPipe = pfGetPipe(1);
> rightView = pfNewChan(rightPipe);
>
> My question is: how can I render BOTH pipes in ONE window?
> Can I do it with libpxxx? Or will I need X?
> I couldnt find something about that in the Guide (or I didnt understand it).
>
> Thanks,
>
> Till Bergmann
>
> --
> ======================================================================
> Till Bergmann Uniklinik FR - Neurozentrum - Posturographielabor
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