Dauth, Eric (Eric.Dauth++at++reflectone.com)
Wed, 17 Nov 1999 15:11:46 -0500
i am trying to render multiple pipes into my helmet. Currently we are
using a single pipe per helmet (stereoscopic, i.e. two channels per helmet,
using 180 Hz field sequential). My system is a 2pipe Onyx running 6.5,
and currently we give each helmet a dedicated pipe.
For performance a pipe per eye would nice to have.
Now there are a couple of ways of doing it, but I'd like some feedback on my
options.
option 1 (standard):
Disabling one channel (i.e. eye) per pipe (i.e helmet) in the old
configuration, then genlocking the two pipes and let our electronics
downstream mix the two separate video streams together again.
I know that in Performer pfChannel has the SWAPBUFFER and SWAPBUFFER_HW
flags
to enable the gangswapping... If I am on a single machine to I still
need to physically hardwire the genlock cable on the back of the machine?
Or is that only needed when I go across machines with the app...
So far the procedure seems to be :
To hardwire I go from 'sync H/C' from the master pipe to a 'genlock in'
of the next pipe right? then i terminate the gelock out of the second pipe
right?
Do I connect the 'swap ready' inputs at all?
Then I use 'setmon -g -n format' on the second pipe to tell it to
look for external synch right?
When I got all that working do I still need to tell performer to
LOCK the PHASE shift or is it implied by the genlock hardware?
Questions that probably have been asked many many times before.. Sorry...
The SGI online documentation on rigging the back of the IG is not
un-ambiguous...
option 2.
Seeing the pfHyperpipe stuff in perfly I think that's a cleaner
way of doing it since it alternates the pipes into a single channel (?).
I'm a little unsure what exactly is going on and how to set it up:
the HYPERPIPE mode in perfly doesn't seem to work as it's supposed to ?
can anyone tell me where I am going wrong implementing option 1? The second
pipe keeps
crashing....
Has anyone tested the Hyperpipe stuff in perfly?
Eric Dauth
This archive was generated by hypermail 2.0b2 on Wed Nov 17 1999 - 12:11:56 PST