Re: multiple pfChannels vs. multiple pfPipes

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Aaron Hightower (aaron++at++qbert.dseg.ti.com)
Thu, 16 Jun 1994 15:30:21 -0500 (CDT)

  A pfPipe is tied to a specific hardware pipeline according to the
  hardware screen that the graphics window is opened on. In initFunc,
  scrnselect should be used to select a hardware pipeline. If initFunc is
  NULL, the full-screen window will be opened on the hardware pipeline
  whose id corresponds to the pfPipe id, e.g.- scrnselect(1); will be used
  for pfPipe number 1. For best performance only one pfPipe should render
                            ^^^^^^^^^^^^^^^^
  to a given hardware pipeline. If multiple views on a single screen are
  desired, use multiple pfChannels.

> Also, if I get a second RE2 pipeline then obviously I would want multiple
> pfPipes, but assuming I still need more pfChannels than I have hardware
> pipelines, then I would assume the same partitioning issue applies. (That is,
> do I create 2 pfPipes -- one for each RE2 pipeline -- and split up the
> pfChannels among them or do I create multiple pfPipes per hardware pipeline and
> reduce the number of pfChannels per software pipe (i.e. pfPipes)?)

Hope this helps,
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