*/
  public void convolution_parameteri (int target, 
    int pname, int param) {

    RequestOutputStream o = display.out;
    synchronized (o) {
      begin_render_request (o, 4105, 16);
      o.write_int32 (target);
      o.write_int32 (pname);
      o.write_int32 (param);
    }
  }