Re: Performance with performer

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Allan Schaffer (aschaffe)
Wed, 8 May 1996 13:37:08 -0700

On May 8, 6:12pm, DreamTeam Ltd. wrote:
> We have created a simple program that draws 13,000 polygons on the
> screen, basicly taking the code and makefile of perfly and modify it a
> little.
>
> Indigo2 Extreme IRISGL - 37 fps
> OPENGL - 25 fps
>
> Impact Max IRISGL - 75 fps
> OPENGL - 75 fps
>
> How is it that the IRISGL and OPENGL work the same speed on the
> impact.

It's likely that the tests were conducted in doublebuffer mode. By
doing so, you're restricting the frame rate to an integer divisor of
the refresh rate. (These numbers do seem to bear that out)

Retry the tests in singlebuffer mode & let's see how they turn out..

Allan

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

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