Re: info-performer Mar 15 2000

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From: Angus Dorbie (dorbie++at++sgi.com)
Date: 03/16/2000 09:39:19

You are almost there...

You need to use the composite sync from pipe o into pipe 1 and make sure
that the pipe 0 is issuing a composite sync.

CHeers,Angus.

Gary Quinn wrote:
>
> Hi Performers.
>
> I have a problem with genlocking
> not working, on our 3 pipe IR2 ONYX2.
>
> On the back, I have cables from....
>
> Pipe 0 Channel 0 Vsync to pipe 1 genlock in
> Pipe 1 genlock out to pipe 2 genlock in
> Pipe 2 genlock out terminated.
>
> Also,
>
> Pipe 0 swap ready to pipe 1 swap ready (Tee piece)
> connected to pipe2 swap ready.
>
> In ircombine, I have set pipe 0 globals
> set to internal sync source,
> and pipes 1 and 2 set to external sync source
>
> Sync format on all three pipes is 1280x1024_60.vfo
>
> perfly -M1 reports....
>
> 39919 PF
> 39919 PF Info: Initialized 3 Pipes
> 39919 PF
>
> ...
>
> 39996 PF Debug: Query of video rate returns 60.00Hz for
> chan 0 on screen 0.
> 39996 PF Debug: Query of swap buffer rate returns 60.00Hz
> for chan 0 on screen 0
> 39996 PF Notice: Using 60Hz video rate.
>
> ...
>
> 39996 PF Debug/Resource: Screen 1 is phase-shifted 0.933120
> degrees from master screen 0.
> 39996 PF Debug/Resource: Screen 2 is phase-shifted 1.797120
> degrees from master screen 0.
>
> We have had an SG engineer look at the back of the machine,
> who couldn't see a problem - he was a hardware
> guy, not a graphics expert.
>
> The problem has persisted through IRIX versions 6.4 upto 6.5.6.
> It happens with our in house performer app, and with
> a third party piece of software.
>
> Are the pipes connected correctly ? Is there some
> software or ircombine thingy that I have to do ?
>
> Cheers,
> Gary.
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-- 
For Performer+OpenGL tutorials http://www.dorbie.com/

"In the middle of difficulty lies opportunity." 
 --Albert Einstein

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