Function cogl_sys::cogl_framebuffer_read_pixels

pub unsafe extern "C" fn cogl_framebuffer_read_pixels(
    framebuffer: *mut CoglFramebuffer, 
    x: c_int, 
    y: c_int, 
    width: c_int, 
    height: c_int, 
    format: CoglPixelFormat, 
    pixels: *mut u8
) -> CoglBool