Function cogl_sys::cogl_framebuffer_read_pixels_into_bitmap

pub unsafe extern "C" fn cogl_framebuffer_read_pixels_into_bitmap(
    framebuffer: *mut CoglFramebuffer, 
    x: c_int, 
    y: c_int, 
    source: CoglReadPixelsFlags, 
    bitmap: *mut CoglBitmap
) -> CoglBool