From: Luc Leblanc (luc.leblanc++at++AdacelCanada.com)
Date: 05/01/2000 10:44:10
Hi.
Does anybody know how performer channel groups are handled (more specifically
the PFCHAN_SWAPBUFFERS_HW token) by Vega on SGI ?
Thanks...
Angus Dorbie wrote:
> It can be important when you intend to run at less than the vertical
> retrace rate of video, especially if you unexpectedly frame extend but
> in practice, with the right pfPhase set the it isn't essential on a
> single image system. It is essential when using multiple systems. You
> should try and channel share PFCHAN_SWAPBUFFERS_HW and wire swapready
> even on a single image system though, it's easy enough.
>
> CHeers,Angus.
>
> Luc Leblanc wrote:
> >
> > Hi.
> >
> > We're using a Vega 3.4 application on a 6 pipes Onyx2 IR2. The pipes
> > are properly genlocked (according to gfxinfo -v and to the Genlock In
> > and the Genlock Loop Through connectors) but the Swap Ready connectors
> > are not connected together. How important is it to connect those
> > connectors together ? What impact can that have on the frame rate ?
> >
> > Thanks...
-- Luc Leblanc Software Designer Adacel Technologies Canada Ltee EMail: leblanc++at++adacelcanada.com Tel: 450-672-1114 #270 Fax: 450-672-4434
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