Re: Difference between O-GL & Performer

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Rémi Arnaud (remi++at++remi.asd.sgi.com)
Thu, 9 Jan 1997 21:07:16 -0800 (PST)

>
> Hi Performer:
> Would anybody be able to tell me - what is the difference of graphical
> and CPU load between the same Open-GL app. and Performer app.
>

 Performer is a layer on top of OpenGL (or IrisGL). It is dedicated to real-time
 visualisation, and handle multiprocessing, multi-channel, multi-pipe ...

 Performer knows about reading a database, OpenGL does not know what a file is.

 So the 'same application' on top of OpenGL would have include a lot of code to do
 what Performer does, and would necessitate a lot of knowledge of how to use openGL
 and IRIX to get the best performance out of an SGI.

 Unless the application is not a VisSim application ;-)

 Best Regards

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