Hi Paul, If I understand the problem correctly you can use a screen aligned quad with a post render camera that has an orthographic projection. i.e. osg::Geometry* quadGeometry = osg::createTexturedQuadGeometry( osg::Vec3(0.0, 0.0, -1.0), osg::Vec3(screenWidth,0.0,0.0), osg::Vec3(0.0,screenHeight,0.0), texSize.x(),texSize.y() ); Bind texture to the quadGeometry Then use the following camera: osg::Camera* camera = new osg::Camera; camera->setClearMask(GL_DEPTH_BUFFER_BIT); camera->setClearColor( osg::Vec4(0.f, 0.f, 0.f, 1.0) ); camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF_INHERIT_VIEWPOINT); camera->setProjectionMatrixAsOrtho( 0.f, screenWidth, 0.f, screenHeight, 1.0, 500.f ); camera->setViewMatrix(osg::Matrix::identity()); camera->setViewport( 0, 0, _screenDims.x(), _screenDims.y() ); camera->setRenderOrder( osg::Camera::POST_RENDER ); camera->addChild(quadGeometry); root->addChild(camera); Using that the texture will always be infront of the camera and facing the screen. Regards, Kim.
________________________________ From: [email protected] on behalf of Paul Griffiths Sent: Sat 23/05/2009 08:42 To: [email protected] Subject: [osg-users] Texture always facing screen? Hi, How can i get a texture to be displayed always facing the screen? the width of the texture has to be the width of the screen, same for height. and the corner of the texture always start at screen coords 0,0 osg::StateSet* stateset = new osg::StateSet(); osg::Image* image = osgDB::readImageFile("Images/panelForeground.png"); if (image) { image->setPixelFormat(GL_BGRA); osg::Texture2D* texture = new osg::Texture2D; texture->setImage(image); texture->setWrap(osg::Texture2D::WRAP_S, osg::Texture2D::REPEAT); texture->setWrap(osg::Texture2D::WRAP_T, osg::Texture2D::REPEAT); stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON); stateset->setMode(GL_LIGHTING,osg::StateAttribute::ON); stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::ON); foregroundGeometry->setStateSet( stateset ); } ... Thank you! Cheers, PaulG ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=12801#12801 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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