public X11GLXGraphicsConfigurationFactory() {
   GraphicsConfigurationFactory.registerFactory(
       javax.media.nativewindow.x11.X11GraphicsDevice.class, this);
 }
 public MacOSXAWTCGLGraphicsConfigurationFactory() {
   GraphicsConfigurationFactory.registerFactory(
       javax.media.nativewindow.awt.AWTGraphicsDevice.class, this);
 }