pub fn set_crtc_transform<'c, 'input, Conn>(
    conn: &'c Conn,
    crtc: Crtc,
    transform: Transform,
    filter_name: &'input [u8],
    filter_params: &'input [Fixed]
) -> Result<VoidCookie<'c, Conn>, ConnectionError>
where Conn: RequestConnection + ?Sized,