Robert Webb (robertw++at++wormald.COM.AU)
Wed, 19 Jul 1995 10:23:13 +1000 (EST)
In my application pfPassChanData() doesn't seem to be doing quite what it
should :-( I have two modes which I can toggle between with the hit of a
key:
Mode 1:
Channel 1: Calls pfDraw() once.
Channel 2: Turned off.
Mode 2:
Channel 1: Calls pfDraw() once.
Channel 2: Calls pfDraw() twice.
When I hit the key, the chan-data for channel 1 changes and I call
pfPassChanData() to make sure it gets sent down the pipeline to the DRAW
process. However I am printing out the value of the data passed to my draw
call-back (from within that call-back) and after a few hits of the key, it
starts changing between the value it should have (for the current mode), and
the value it should have in the other mode. I have a printf at every call
to pfPassChanData(), so I know it is NOT being called unless I hit the key,
but still the data being passed to the draw call-back is oscillating between
two different values. It is as if Performer is still using an older copy of
the chan-data sometimes, rather than the new one I asked to pass down.
Has anyone heard of this sort of behaviour before? I am also using a
different draw-mask for channel 1 in the two different modes, if that makes
a difference. And the problem only happens in multiprocess mode, NOT when I
run in a single process. I am using Performer 1.2.
Thanks in advance,
Rob.
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|_) _ |_ _ ._ _|_ \ / _ |_ |_ robertw++at++wormald.com.au
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"Informer, you no say daddy me Snow me I'll go blame, a licky boom boom down"
- Snow.
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