#include <osg/Geometry>

#include <osg/Geode>

#include <osg/Depth>

#include <osg/Texture2D>

#include <osgDB/ReadFile>

#include <osgViewer/Viewer>  

int main( int argc, char** argv )

{

    osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D;

    osg::ref_ptr<osg::Image> image = osgDB::readImageFile( "D:/background1.png" );

    texture->setImage( image.get() );  

    osg::ref_ptr<osg::Drawable> quad = osg::createTexturedQuadGeometry(osg::Vec3(), osg::Vec3(1.0f, 0.0f, 0.0f), osg::Vec3(0.0f, 1.0f, 0.0f) );

    quad->getOrCreateStateSet()->setTextureAttributeAndModes( ,texture.get());  

    osg::ref_ptr<osg::Geode> geode = new osg::Geode;

    geode->addDrawable( quad.get() );  

    osg::ref_ptr<osg::Camera> camera = new osg::Camera;

    camera->setClearMask(  );

    camera->setCullingActive( false );

    camera->setAllowEventFocus( false );

    camera->setReferenceFrame( osg::Transform::ABSOLUTE_RF );

    camera->setRenderOrder( osg::Camera::POST_RENDER );

    camera->setProjectionMatrix( osg::Matrix::ortho2D(0.0, 1.0, 0.0, 1.0) );

    camera->addChild( geode.get() );  

    osg::StateSet* ss = camera->getOrCreateStateSet();

    ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF );

    ss->setAttributeAndModes( new osg::Depth(osg::Depth::LEQUAL, 1.0, 1.0) );  

    osg::ref_ptr<osg::Group> root = new osg::Group;

    root->addChild( camera.get() );

    root->addChild( osgDB::readNodeFile("cessna.osg") );  

    osgViewer::Viewer viewer;

    viewer.setSceneData( root.get() );

    return viewer.run();