Pf 1.2 & 2.0, IRIX 5.3 & 6.0, OpenGL

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Carlo L. Tiana (carlo++at++vision.arc.nasa.gov)
Wed, 22 Feb 1995 08:20:21 -0800

The alphanumeric soup of the title reflects the slight confusion
in my mind as to what's (in)compatible with what in the current or
imminent releases of graphics software.

We have a 'mission-critical' :-) application written under Performer
1.2, IRIX 5.2/5.3 and GL, which runs too slowly (CPU-bound) to be
useful to us right now. We purchased a PowerIndigo 2 (R8000) to try
to improve the speed problem (since it is floating point stuff that
holds us up). Now we are having to make it run optimally on that
platform.
It is my understanding that the order of business to achieve this is:

  - port to OpenGL
  - (minor?) port to Performer 2.0 (do Performer calls pretty much remain
    unchanged between 1.2 and 2.0?)
  - (very minor?) tuning for IRIX 6.0 (if any at all).

Am I broadly correct?
If so, I have a few more questions (pushing my luck), to help me figure out
how portable between different SGI boxes the resulting application will be:

  - is Performer 2.0 available for IRIX 5.3
  - are GalileoVideo and the VideoLibrary fully supported and functional
    under IRIX 6.0?

Even though some of the questions veer off the central thrust of this list,
I would appreciate any help.

Thank you very much,
Carlo.

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