Hi Alessandro, nah. That wont do the job. I did a quick test, and here is how I made it work
go the the osgHUD example and: 1. createHUD, set for the camera: camera->setRenderOrder(osg::Camera::NESTED_RENDER); 2. in main, about line 362, where you load your scene without arguments osg::ref_ptr<osg::Group> group = new osg::Group; osg::Node* one = createHUD(); // this will be your background image osg::Node* two = scene.get(); one->getOrCreateStateSet()->setRenderBinDetails(1,"RenderBin"); two->getOrCreateStateSet()->setRenderBinDetails(2,"RenderBin"); group->addChild(one); group->addChild(two); group->getOrCreateStateSet()->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF); two->getOrCreateStateSet()->setMode(GL_DEPTH_TEST,osg::StateAttribute::ON); // add the HUD subgraph. //if (scene.valid()) group->addChild(scene.get()); //group->addChild(createHUD()); // set the scene to render viewer.setSceneData(group.get()); this is working code. Might be another way, but this will help you I think Let me know if it works for you Nick http://www.linkedin.com/in/tnick Sent from Ünalan, İstanbul, Turkey On Sat, Dec 19, 2009 at 11:16 AM, alessandro terenzi <[email protected]>wrote: > I'd like to create a fixed background for an osg application, much like a > HUD but while the HUD is always on top of the scene, I need to have an image > always behind any 3D object. > > I tried to modify the example about HUDs by changing: > > setRenderOrder(osg::Camera::POST_RENDER); > > into this: > > setRenderOrder(osg::Camera::PRE_RENDER); > > but I guess that this is not sufficent to achive my goal, because actually > the background image is not displayed at all (or maybe it is covered by the > scene...). > > How can I create the desired effect? > Thanks in advance. > Alessandro > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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