From: Thomas Ruge (Thomas.Ruge++at++gmx.de)
Date: 03/15/2000 14:08:38
Devrim Erdem wrote:
> Hi,
>
> I need to develop a performer application on an Onyx2 single pipe machine and have this application work on a 3 pipe onyx2 rack system. As I don't
> have the 3 pipe machine at the development site, I am afraid of any problems related to the architectural changes between these two systems. Though
> Performer would save me from many changes, I would like to hear if there are any possible problem sources. Any ideas on the issue are very much
> appreciated.
>
> Software will be based on Vega+Performer, will have 3 channels on Single pipe machine and 3 windows on the 3 pipe machine when transition if complete.
>
> My app needs to run at 60 Hz at the 3 pipe machine and my understanding is that 3 pipe machine can do 11M polygons per pipe and 1 pipe desk side has
> the same capability. Would it be correct if I assume that each pipe can have up to 11 M polygons ( yes I know this number shall be divided by x ) on
> the 3 pipe machine.
>
> Thanks,
>
> --
> /*===============================================
> M. Devrim Erdem devrim++at++infotron.com.tr
> Simulation Software Development
> info(+)TRON, Turkey
> Tel: +90 216 4921002
> Fax: +90 216 3432132
> http://www.infotron-tr.com
> http://abone.turk.net/mderdem
> ===============================================*/
>
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Hello Devrim,
We are using Vega+Performer on a Deskside Onyx with one Pipe ( the Pocket Onyx has only one Pipe ) and we are running our
applications with 3 Channels at a resolution of 1024x768 pixels and in Stereo-Mode ( 96 Hz ). We didn't count the polygons in our scene
but it works also with big databases, but of course it isn't that fast than with a 3 pipe rack machine. I think one important point
is how your 3 channels are oriented, if your viewpoints are positioned that the 3 view frustums see almost the whole Scene, then the
machine has to render almost all polygons of the scene and view frustum culling doesnt help to reduce the number of rendered polygons. At that
point 3 pipes makes sense ( as far as i understand, please correct me if i am wrong ).
-- ------------------------------------------------------------------------- Thomas Ruge, Siemens Virtual Reality Center private email: Thomas.Ruge++at++gmx.de
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