Re: Window IN a virtual environment

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Wade Olsen (wade++at++fnord.studio.sgi.com)
Fri, 21 Apr 1995 10:04:36 -0700

On Apr 20, 8:38pm, Neal W Schneider wrote:
> Subject: Window IN a virtual environment
> Howdy all!
>
> I am adding some features to a cockpit in a virtual environment that has
> been developed using Performer 1.2. One of my objectives is to add a
> rendered display on a console in the cockpit. The current system
> has a seperate pipe that displays in a fixed area on the screen, but I
> need to take the rendered oputput from that display and project onto a
> plane in the cockpit--sort of like seeing a video on a panel in the
> virtual environment.
>
> I figure that it shouldn't bee too difficult, and I think that I should
> be able to get at the rendereing pipleline just before it is displayed
> and apply another trasnformation to it, but don't quite see how.

Try this:

        1. render the scene for the console/monitor display.
        2. use "subtexload," "fbsubtexload," and/or "texdef2d" with
           the "TX_FASTDEFINE" token to copy the rendered image to
           texture memory (I assume your using a RealityEngine). You
           may also have to set readsource to the back buffer.
        3. render the virual scene using the texture in (2) to draw
           your virtual monitor.

-- 


Wade


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Wade Olsen, wade++at++sgi.com, 415-390-1023, Silicon Studio

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