git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14889 16af8721-9629-0410-8352-f15c8da7e697
osgshaders.cpp and demonstrates the use of GLSL vertex and fragment shaders with a simple animation callback. I found the osgshaders.cpp too complex to serve as a starting point for GLSL programming"