Timothy Moore (moore++at++WOLFENET.com)
Thu, 10 Apr 1997 06:21:52 -0700 (PDT)
Bryan
truly measure the time taken to do N clears, run single buffer. The time taken
should be sort of linear against the numbers of windows but there may also be a
point were at some number of windows the time taken go dramatically up. This is
because somewhere the contexts are kept in some table that has a finite length
( N windows ) and if you try to shuffle through more than that you get into
heavy gfx context switching. N would be different on different platforms I
think. I think the thing you're seeing is the double buffer thing I mentioned
forst though.
pfChannels in the same pfPipeWindow all share a graphics context.
There shouldn't be any graphics context switching between them.
Tim
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