pub unsafe extern "C" fn glXCreateContext(
dpy: *mut Display,
vis: *mut XVisualInfo,
shareList: GLXContext,
direct: c_int,
) -> GLXContextpub unsafe extern "C" fn glXCreateContext(
dpy: *mut Display,
vis: *mut XVisualInfo,
shareList: GLXContext,
direct: c_int,
) -> GLXContext