Hi, I am using OpenSceneGraph on iOS, using OpenGL ES 2.0. I am having hard time to figure out how to draw polygon lines using shaders. I'd like to draw a simple box with lines. However I can't find a way because osg::PolygonMode::LINE does not work. In fact boundingBoxNode->getOrCreateStateSet()->setAttributeAndModes(new osg::PolygonMode(osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE) );
with a simple phong shader attached gives me a box. is there any way to find the edges inside the fragment shader?.... maybe some mathematical computation that I can do to figure out if the fragment belongs to an edge or not. Thank you John ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=57054#57054 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
