Process callbacks

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Gan Wang (gan++at++cavalier.cambridge.com)
Mon, 6 Jan 1997 17:53:54 -0500

I wonder how and when exactly the user process callbacks set by
pfChanTravFunc() are invoked. Are they before or after cleaning the tree and
passing the data, etc, inside the pfFrame()? Since pfFrame() is called inside
the APP process, would the return of pfAppFrame() wait for the return of the
APP traversal? And, if pfAppFrame() is not called explicitly, say in post
frame, would the return of pfFrame() wait for the return of pfAppFrame() or any
of the callback functions (and the traversals) in CULL and DRAW processes if
multiprocessing? A pseudocode would be greatly appreciated.

Thanks,
Gan

-- 


Gan Wang


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