*/
  public void copy_texture_sub_image_1d (int target, int level, 
    int xoffset, int x, int y, int width) {

    RequestOutputStream o = display.out;
    synchronized (o) {
      begin_render_request (o, 4121, 28);
      o.write_int32 (target);
      o.write_int32 (level);
      o.write_int32 (xoffset);
      o.write_int32 (x);
      o.write_int32 (y);
      o.write_int32 (width);
    }
  }