GLUT_VISIBILITY_CALLBACK 1016 php_opengl/glut/php_glut.c call_user_callback(call_backs,GLUT_VISIBILITY_CALLBACK,1,params); GLUT_VISIBILITY_CALLBACK 1025 php_opengl/glut/php_glut.c HASH_CALLBACK(callback, 1, GLUT_VISIBILITY_CALLBACK);