Why is OpenGL Perfly so slow?

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David H. Whittington (dhw3314++at++aw101.iasl.ca.boeing.com)
Thu, 7 Mar 1996 07:31:53 -0800 (PST)

        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.

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