Re: Help ModelGen.

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Allan Schaffer (aschaffe)
Wed, 23 Aug 1995 13:49:03 -0700

On Aug 23, 4:04pm, Greg Hock wrote:
>
> I snatched the stereo perfly (sfly) app. off of sgigate but can only
> get it running in non-stereo mode (sfly -s). Ive tried the software
> on 3 different indigo family boxes with the same results.

SGI has 2 methods of stereo:

  - the older full-screen stereo (STR_RECT, and so on) where the
    screen is divided in two, each half overlapping the other and
    scanned out as the full display; available on all platforms

  - the newer stereo-in-a-window method where a particular window can
    have a left & right buffer, each scanned out in sequence. See
    stereobuffer() and leftbuffer()/rightbuffer(). Only available on
    RealityEngine.

sfly uses the latter method, which is why it won't work on an
Indigo. Although, I'm a little surprised that you only get a black
screen -- I would have expected some sort of display, but with the
viewpoint oscillating between the right-eye and left-eye positions.

Allan

-- 
Allan Schaffer                                             aschaffe++at++sgi.com
Silicon Graphics                  http://reality.sgi.com/employees/aschaffe

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