lightProjMatBinder = new UniformMat4Binder();
SceneBinders.associateUniformWithNodes( nodes, lightProjMatBinder, "cameraToLightProjMatrix" );
SceneBinders.setStateBinderWithNodes( nodes, lightProjMatBinder );
camLightPosBinder = new UniformVec3Binder();
SceneBinders.associateUniformWithNodes( nodes, camLightPosBinder, "cameraSpaceProjLightPos" );
SceneBinders.setStateBinderWithNodes( nodes, camLightPosBinder );
int unlit = scene.findProgram( "p_unlit" );
sphereMesh = scene.findMesh( "m_sphere" );