Robert, Just a nuisance tidbit that I recently wrestled with... it appears there are some things in the FFP that you can't get at via GLSL (at present).
I tried to get at the GL_LIGHTING state from within the shader and couldn't access it. I asked around a little and was told that GL_LIGHTING "and some other states" are available to the FFP functions, but not the shader. (I never followed up on what "other states" were included). So a "generic" shader that emulates FFP would need to test GL_LIGHTING and if OFF, perform the non-shaded coloring and return. To get this, you'll need a little help in the software side. For example, a visitor that removed the shader or used a different shader when GL_LIGHTING was off, or (the manner I chose), to create a uniform that tracked the GL_LIGHTING state to emulate that. Regards, Bill _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
