Re: Why is OpenGL Perfly so slow?

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Angus Dorbie (dorbie++at++bitch.reading.sgi.com)
Thu, 7 Mar 1996 16:14:43 +0100


What graphics did you have in the crimson?

On Mar 7, 7:31am, David H. Whittington wrote:
> Subject: Why is OpenGL Perfly so slow?
> I tried building an OpenGL version of perfly under
> Performer 2.0 and when displaying a model of an aircraft with
> approximately 5000 polygons, I found that the draw time was
> about 100 msec when under perfly gl mode, it took about 25 msec
> on a Crimson. I realize that the OpenGL version is intended for
> Impact and Infinite Reality but is it(OpenGL) so slow that I
> cannot consider using the same code for the older machines.
> Just why is it 5 times slower? It would make sense if it were
> 20-50% slower perhaps.
>
>
> .=========================================================================.
> / David H. Whittington | Voice: (206) 662-4923 (work)
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> | Boeing Commercial Airplane | (206) 662-3425 (lab)
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> | P.O. Box 3707, M/S 19-MH | Internet: dhw3314++at++aw101.iasl.ca.boeing.com
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>
>-- End of excerpt from David H. Whittington


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