Re: swapready

New Message Reply Date view Thread view Subject view Author view

Mark Lewis (MarkL++at++equipe.ltd.uk)
Wed, 17 Jun 1998 07:49:47 +0100

Beware: I have experienced a severe problem with PFCHAN_SWAPBUFFERS_HW
using Performer 2.2. I found that my application, when running
multi-pipe and compiled with Performer 2.2, ran at a miserable 0.7 Hz,
while the same application compiled with Performer 2.1 ran at 60 Hz.
When I removed the PFCHAN_SWAPBUFFERS_HW bit from the pfChanShare call,
I got 60 Hz again (with 2.2). I know that I am not the only one to
experience this problem, and would appreciate any comments / solutions.

Jean-Claude Bachmann wrote:
>
> I would like to synchronize buffer swapping of a couple of pfChannels
> using channel groups, sharing the PFCHAN_SWAPBUFFERS_HW bit.
>
> Is it sufficient to wire the swapready connectors on the pipes of a
> Onyx2 or do I have to genlock the pipes as well?
>
> If genlocking is required, I remember that somebody offered a map of
> pin assignments for the special SGI video cable that is needed which
> seems to be quite expensive ;-). Who was it?
>
> By the way I was trying to ftp the monthly archives, and the archiving
> kind of stopped last year. Did the archive move?
>
> J.C.
>
>
> --
>
> ********************************************************************
> * Artemedia GmbH | Tel.: +49 [0]30 25443 - 0 *
> * Jean-Claude Bachmann | Tel.: +49 0172 - 219 13 76 *
> * Hardenbergplatz 2 | Fax.: +49 [0]30 25443 - 400 *
> * D-10623 Berlin | email: jean-claude.bachmann++at++artemedia.de *
> * Germany | Web Page http://www.artemedia.de *
> ********************************************************************
>
> 

-- 
Mark C Lewis
Principal Development Engineer
Equipe Electronics Ltd.
13 Liverpool Gardens
Worthing, W. Sussex
BN11 1RY
ENGLAND


Phone +44 (0) 1903 216622
FAX   +44 (0) 1903 216633


mailto:markl++at++equipe.ltd.uk
http://www.equipe.ltd.uk
=======================================================================
List Archives, FAQ, FTP:  http://www.sgi.com/Technology/Performer/
            Submissions:  info-performer++at++sgi.com
        Admin. requests:  info-performer-request++at++sgi.com

New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:57:33 PDT

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.