Re: embedded geometry in performer

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Chikai Ohazama (chikai@talula)
Tue, 17 Aug 1999 11:29:47 -0700 (PDT)

The Depth Test should be enabled during both geometry and volume
rendering, where geometery rendering should be done first. In terms of
integration of Volumizer into Performer, we are currently working on a
volume node. It is pretty close to being finished so we should be able to
get it out to you soon. It integrates completely with Perfomer and uses
the scene graph structure.

P.S. Don, any comments?

________________________________________________________________________
Chikai J. Ohazama, Ph.D. SGI
Member of Technical Staff 2011 N. Shoreline Blvd. ms 525
Advanced Graphics Division Mountain View, CA 94043.1389
                                     Telephone: (650) 933-6533
                                     FAX: (650) 932-0511

On Mon, 16 Aug 1999, shalini wrote:

> Hi,
> Im trying to use volumiser within performer to visualise a geometric
> model together with volume data and this is my problem. The model and
> the volume seem to be drawn ok except when the model is drawn embedded
> within the volume. At this point, only the pixels corresponding to the
> model are drawn to the frame buffer and the volume data out of sight.
> When I tried removing the glDepthMask(GL_FALSE) in the volume drawing,
> the reverse happens(the model cant be seen). The examples that come
> along with volumiser seem to draw embedded geometry within the volume
> drawing function, but I dont think this will be possible using a
> scene-graph API like performer.
> Please help!
> Thanks & Regards
> Shalini
>

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