protected synchronized boolean makeCurrent(Runnable initAction) throws GLException {
    if (pendingOffscreenResize) {
      if (pendingOffscreenWidth != width || pendingOffscreenWidth != height) {
        if (hglrc != 0) {
          destroy();
        }
        width  = pendingOffscreenWidth;
        height = pendingOffscreenHeight;
        pendingOffscreenResize = false;
      }
    }
    return super.makeCurrent(initAction);
  }