I made a thumbnail sketch with the two concepts (see png). On the one hand (blue graph) I use three cameras with the diffrent viewport settings, on the other hand (yellow graph) I use one camera (ortho) and create geometry nodes (planes) and map the texture on this planes.
The main question is: what is the efficient way? Cheers Martin -------- Original-Nachricht -------- > Datum: Fri, 29 Oct 2010 09:00:40 +0200 > Von: "Martin Großer" <[email protected]> > An: OpenSceneGraph Users <[email protected]> > Betreff: Re: [osg-users] Two Viewports with one Camera > Ah OK, the render to texture idea is maybe a good alternative. > > Do the RTT affect the performance? > > My idea was a observer pattern. The camera settings are in a subject > object and the osg::Camera is in the observer object. When the settings to be > change the subject notify the observer (cameras with different viewports). > But I think it is time consuming. > > Do you think, the RTT is the better way? > > Cheers > > Martin > > > -------- Original-Nachricht -------- > > Datum: Fri, 29 Oct 2010 17:32:34 +1100 > > Von: Ulrich Hertlein <[email protected]> > > An: OpenSceneGraph Users <[email protected]> > > Betreff: Re: [osg-users] Two Viewports with one Camera > > > Hi Martin, > > > > On 29/10/10 17:17 , "Martin Großer" wrote: > > > I would like use two viewports in my application and one camera. Is > this > > possible? I > > > think, the normal way is to define the viewport for a camera like: > > > camera->setViewport(...) > > > > I can't say if it's possible, but if it is then I'd guess it renders the > > same scene twice. > > In this case it might be easier to render to a texture and just display > > the texture in two > > viewports. > > > > /ulrich > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > -- > GMX DSL Doppel-Flat ab 19,99 €/mtl.! Jetzt auch mit > gratis Notebook-Flat! http://portal.gmx.net/de/go/dsl > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- GMX DSL Doppel-Flat ab 19,99 €/mtl.! Jetzt auch mit gratis Notebook-Flat! http://portal.gmx.net/de/go/dsl
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