Re: Impact and StereoGraphics

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Angus Dorbie (dorbie++at++bitch.reading.sgi.com)
Mon, 7 Oct 1996 17:16:40 +0100


You want info-inventar.

Anyway, how apout a negative IPD on IMPACT, would this work in Inventar?

Angus.

On Oct 7, 10:06am, Steven E. Aukstakalnis wrote:
> Subject: Impact and StereoGraphics
> Interesting Situation moderately related to Performer.
>
>
> Just prior to SIGGRAPH '96 in Nawlins, SGI shipped us a new
> Max Impact w/ 1 250 MHZ IP22 Processor, 384 Mbytes RAM. Nice beefy
> machine, except for one difficulty.
>
> We (myself and about 6 SGI tech types) discovered that there is a bit of
> a hardware problem when trying to use StereoGraphics LCD shutter glasses
> to view models in stereo using utilities like ivview and SceneViewer.
>
> Now try to follow me on this one....
>
> Seems that when ivview tells the hardware to tell the emitter to tell
> the glasses to open, say, the left eye LCD, the right eye opens, and
> vica versa. The net result is that the stereo effect is screwed up. BUT,
> if you put the glasses on upside down, things work just fine. This is
> known as "psuedo stereo".
>
> After digging for several hours, it was detirmined that a temporary work
> around on this problem was to open the emitter box and move a jumper.
> This in effect causes the emitter to tell the glasses to open the eye
> opposite what the hardware has dictated.
>
> Does anyone know if this difficulty has been addressed? Is there another
> workaround or cure so that we don't have to keep switching the jumper
> when we move the StereoGraphics unit between different flavors of SGI
> machines?
>
>
>
> Thank you in advance for your time and assistance in this matter.
>
> --------------===============--------------===============----------
> Steve Aukstakalnis
> National Science Foundation
> Engineering Research Center for Computational Field Simulation
> 2 Research Park Blvd
> Starkville, MS 39759
>
> 601.325.4049
> 601.325.7692
>
> matrix++at++erc.msstate.edu
> http://www.erc.msstate.edu/~matrix
> ------------===============---------------================----------
> =======================================================================
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>-- End of excerpt from Steven E. Aukstakalnis

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