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

    RequestOutputStream o = display.out;
    synchronized (o) {
      begin_render_request (o, 4103, 16);
      o.write_int32 (target);
      o.write_int32 (pname);
      o.write_float (param);
    }
  }