GLUT_SPECIALUP_CALLBACK 1074 php_opengl/glut/php_glut.c call_user_callback(call_backs,GLUT_SPECIALUP_CALLBACK,3,params); GLUT_SPECIALUP_CALLBACK 1095 php_opengl/glut/php_glut.c HASH_CALLBACK(callback, 1, GLUT_SPECIALUP_CALLBACK);