Re: multithreading issues and the scene graph

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Sylvain Mayer (mayer++at++cae.ca)
Tue, 02 Nov 1999 13:53:08 -0500

Sylvain Mayer wrote:

> Anthony Bavuso wrote:
>
> > The DynamicModel model objects updates the pfDCS node to alter model position
> > in its own thread and hence asynchronously to performer traversing the scene
> > graph.
> >
> > There are obvious problems that this could cause. For example the
> > DynamicModel may be writing to the pfDCS node while performer is trying to
> > read it. Problems solved by using some kind of semaphore, mutex, lock, etc.
> >
> > My question is, Does performer have built-in to the pfDCS class and-or its
>
> Look for pfCycleBuffer. I think this is exactly what you want.

Oops. pfCycleBuffer is now obsolete and you want to use pfFlux instead.

regards, Sylvain
________________________________________
Sylvain Mayer, 3D Graphics Developer
Graphics Simulation Technology
Display Eng. & Special Projects
CAE Electronics Ltd. (http://www.cae.ca)
mailto:mayer++at++cae.ca
Tel: (514) 341-6780 Ext: 3065
Fax: (514) 734-5618

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