If you enable two-sided lighting, the driver flips the lighting normals so that the back side of the polygon is lit correctly. There should be no need to do this in a shader (with OGL that supports fixed functionality...).
-----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Christian Buchner Sent: Thursday, March 14, 2013 10:46 AM To: OpenSceneGraph Users Subject: Re: [osg-users] [forum] Rendering backface like front face The front and back material properties were set to same values, it's just that when doing the calculations for the back side, the normal vector is not pointing towards the light source but away from it. I only looked at this issue briefly, and concluded that it would take some GLSL to fix it. Christian _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
