mapping pfChannel to hardware channel

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Robert Wolfe (rwolfe++at++dciem.dnd.ca)
Fri, 17 Sep 1999 18:54:29 -0400


Hi everyone,

Out of curiosity I am trying to understand the
relationship between software channels and
hardware channels on, say, an Onyx2IR2 with
2 hardware channels per pipe.

Let's say I use ircombine to produce 2 output
channels side by side as for stereo.
What is happening when I create 2 pfChannels
with different viewports and viewpoints in order
to produce an image for each eye?
Is it just the splitting of the viewport which
ultimately determines which software channel
is mapped to which hardware channel ?
Or is there something to do with pfVideoChannels
going on here whereby for each new channel created
a new pfVideoChannel is created for which the
default hardware channel index is one greater
than for the last pfVideoChannel (and hence channel)
created ?

Can someone please straighten me out here ?

Robert

-- 
Robert Wolfe, consultant
Training Technology
Defence and Civil Institute of Environmental Medicine
1133 Sheppard Ave., W.,
Toronto, Ontario
CANADA
M3M 3B9
(416) 635-2065 
robert.wolfe++at++dciem.dnd.ca

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