Hi Dave, You might be a newbie but your diving into stereo and multi-window work which is far more advanced than most experienced hacks will be using ;-)
The solution you are looking for is to using CompositeViewer and a view for each window and create a separate DisplaySettings object for each view, and use the individual DisplaySetting's objects to differentiate the stereo settings for each view. I don't think there is an example that does exactly this, but this is who I designed the osgViewer library to work. I believe others have successful got this to work, but can't recall the osg-users thread that it will have been discussed. Have a look at the osgcompositeviewer and osgcamera examples for example of setting up multiple views. Robert. On Thu, Oct 22, 2009 at 9:28 PM, Dave Modl <[email protected]> wrote: > [Newbie warning.] > > I searched the knowledge base and the list archives and the examples and > cannot find a way to create one viewport in stereo and another in 2D (with > the same data). I'm probably going about this in the wrong way. > > I copied and modified osgviewer.cpp and added code from osgcamera.cpp to > create the two viewports and then tried to change one of the viewports into > HORIZONTAL_SPLIT mode. I get an exception at the point where I am trying to > change the DisplaySettings (at the bottom of the routine included here): > > void singleWindowMultipleCameras(osgViewer::Viewer& viewer) > { > osg::GraphicsContext::WindowingSystemInterface* wsi = > osg::GraphicsContext::getWindowingSystemInterface(); > if (!wsi) > { > osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface > available, cannot create windows."<<std::endl; > return; > } > > unsigned int width, height; > wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), > width, height); > > osg::ref_ptr<osg::GraphicsContext::Traits> traits = new > osg::GraphicsContext::Traits; > traits->x = 0; > traits->y = 0; > traits->width = width; > traits->height = height; > //traits->windowDecoration = true; > traits->windowDecoration = false; > traits->doubleBuffer = true; > traits->sharedContext = 0; > > osg::ref_ptr<osg::GraphicsContext> gc = > osg::GraphicsContext::createGraphicsContext(traits.get()); > if (gc.valid()) > { > osg::notify(osg::INFO)<<" GraphicsWindow has been created > successfully."<<std::endl; > > // need to ensure that the window is cleared make sure that the > complete window is set the correct colour > // rather than just the parts of the window that are under the > camera's viewports > gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f)); > gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); > } > else > { > osg::notify(osg::NOTICE)<<" GraphicsWindow has not been created > successfully."<<std::endl; > } > > // > // We want one camera viewport set at the bottom portion of the > screen. > // we want the second camera to fill the upper part of the screen. > // > unsigned int numCameras = 2; > double aspectRatioScale = 1.0;///(double)numCameras; > > // > // First camera viewport ... the whole screen. > // > { > osg::ref_ptr<osg::Camera> camera = new osg::Camera; > camera->setGraphicsContext(gc.get()); > camera->setViewport(new osg::Viewport(0, 0, width, height)); > GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT; > camera->setDrawBuffer(buffer); > camera->setReadBuffer(buffer); > //aspectRatioScale = (double)width/480.0; > viewer.addSlave(camera.get(), osg::Matrixd(), > osg::Matrixd::scale(aspectRatioScale,1.0,1.0)); > } > > // > // Second camera viewport ... stereo l/r placed at the bottom of the > screen. > // > { > osg::ref_ptr<osg::Camera> camera = new osg::Camera; > camera->setGraphicsContext(gc.get()); > unsigned int x, w, y, h; > unsigned int basicWidth = 480; > if(basicWidth > width/2) > { > x = 0; > y = 0; > w = width; > h = width/2; > } > else > { > x = width/2 - basicWidth; > y = 0; > w = 2*basicWidth; > h = basicWidth; > } > osg::notify(osg::NOTICE)<<" stereo viewport (x, y, w, h) " << > x << ", " << > y << ", " << > w << ", " << > h << > std::endl; > camera->setViewport(new osg::Viewport(x, y, w, h)); > GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT; > camera->setDrawBuffer(buffer); > camera->setReadBuffer(buffer); > //aspectRatioScale = (double)width/((double)height - 480.0); > viewer.addSlave(camera.get(), osg::Matrixd(), > osg::Matrixd::scale(aspectRatioScale,1.0,1.0)); > > viewer.getDisplaySettings()->setStereoMode(osg::DisplaySettings::HORIZONTAL_SPLIT); > } > } > > Thanks for any help you can offer. > > Regards, > Dave Modl > [email protected] > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
