pub unsafe extern "C" fn CVDisplayLinkCreateWithOpenGLDisplayMask(
mask: CGOpenGLDisplayMask,
displayLinkOut: *mut CVDisplayLinkRef,
) -> CVReturnpub unsafe extern "C" fn CVDisplayLinkCreateWithOpenGLDisplayMask(
mask: CGOpenGLDisplayMask,
displayLinkOut: *mut CVDisplayLinkRef,
) -> CVReturn