pub fn enqueue_read_image(
command_queue: *mut c_void,
image: *mut c_void,
blocking_read: u32,
origin: *const usize,
region: *const usize,
row_pitch: usize,
slice_pitch: usize,
ptr: *mut c_void,
num_events_in_wait_list: u32,
event_wait_list: *const *mut c_void
) -> Result<*mut c_void, i32>