Re: pfEarthSky bug

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Sharon Clay (src++at++rose.engr.sgi.com)
Wed, 2 Jul 1997 01:47:25 -0700

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+>---- On Jul 1, 5:27pm, Robert Reif wrote:
> Subject: pfEarthSky bug
->
->Hi,
->
->I'm having a problem with pfEarthSky when using asymmetrical viewing frusta.
->This is a well known bug which has come up before in this newsgroup as far
->back as Oct. 1994. SGI has no intention of fixing this bug. They stated
->that only a few people have complained about it so it isn't worth fixing.

I think a lot has gotten lost in some translations here, including all
hint of engineering common sense.

1) EarthSky has had several bugs, this being one.
        Others that have or are being fixed include
        - MP safe-ness with multiple pipes
        - instancing of EarthSky across channels with different viewpoints
        - placement of far polygon against the clip-plane

2) We have NOT stated that we will not fix the bug!!! The "no intention" aspect
        is absolutely not true. What is true is that we are trying to release
        Performer2.2 as soon as possible and there are bugs on our list that
        many people want fixed. We are trying to achieve a balance of fixing
        as many bugs as possible but not holding off the next release so long that it
        hurts more people than it helps.
        The asymmetrical viewing frusta pfEarthSky is not currently
        on the list as a reason to delay the release of Performer2.2.

3) We do have planned some future siginificant (needed) enhancements to
        pfEarthSky and rather than hack fixes for difficult bugs into the old code
        we'd rather do a single larger overhaul of pfEarthSky that yields a
        much more flexible and better looking feature. We currently are planning
        this pfEarthSky overhaul for after 2.2.

As always, feedback from folks on this list on this and other issues like this is
most welcome and tremendously valuable to us and hopefully lead us to produce a better
and more useful product.

Thanx,
src.

-- 
-----{-----{---++at++   -----{----{---++at++   -----{----{---++at++   -----{----{---++at++
Sharon Rose Clay (Fischler) - Silicon Graphics, Advanced Systems Dev.
src++at++sgi.com  (415) 933 - 1002  FAX: (415) 965 - 2658  MS 8U-590
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