Ciao Alessandro, I did something very similar to what you are saying activating backface culling for both front and back faces this way the overhead on the graphic card should be minimal, even less than activating the alpha blending to zero:
osg::CullFace* cull= new osg::CullFace(osg::CullFace::FRONT_AND_BACK); osg::Group* group = new osg::Group; group ->getOrCreateStateSet()->setAttribute(cull, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE); group ->getOrCreateStateSet()->setMode( GL_CULL_FACE, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON ); This works fine for me using the standard osgViewer::Viewer::computeIntersections(...) Ciao, Michele _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
