Using OpenGL in Java2d seems broken.

Daniel Pitts <>
Mon, 11 Aug 2008 09:21:17 -0700
It seems to me that the following (SSCCE provided below) should draw a
little yellow circle where the user has moved the mouse. It works fine
if I don't enable opengl, but it doesn't work when I do enable it.

What happens for me: A window appears with decoration, but its contents
are "see through". E.g. it looks like only the decoration was drawn, not
any of the contents. If I move the frame around, it appears that some
sort of double buffer is used, but it never gets updated with the
contents that I provide.

Is this a bug with:
a) my code
b) the JDK
c) The latest GeForce Go 6150 Vista 32-bit drivers from HP (downloaded
and installed yesterday).
d) Something else gone wrong?

<SSCCE filename="OpenGLTest" please-snip-in-reply="true">

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.Ellipse2D;

public class OpenGLTest {
     // To see "correct" behavior, set to false.
     private static final boolean USE_OPENGL = true;

     public static void main(String[] args) {
         if (USE_OPENGL) {
             System.out.println("Using OpenGL");
             System.setProperty("sun.java2d.opengl", "True");
         } else {
             System.out.println("Not using OpenGL");
         EventQueue.invokeLater(new Initter());

     private static void draw(Graphics2D g2d, Point mousePosition) {
         g2d.fill(new Rectangle(0, 0, 640, 480));
         Ellipse2D.Double circle = new Ellipse2D.Double();
         if (mousePosition != null) {
             circle.setFrame(mousePosition, new Dimension(10, 10));

     private static class Initter implements Runnable {
         public void run() {
             System.out.println("Constructing frame");
             JFrame frame = new JFrame("Hello");
             final JPanel pane = new PaintlessPanel();
             pane.setPreferredSize(new Dimension(640, 480));
             pane.addMouseMotionListener(new MouseUpdater(pane));
             System.out.println("Done constructing frame.");

         private static class MouseUpdater extends MouseMotionAdapter {
             private final JPanel pane;

             public MouseUpdater(JPanel pane) {
                 this.pane = pane;

             public void mouseMoved(MouseEvent e) {
                 System.out.println("Mouse moved to: " + e.getPoint());
                 Graphics graphics = pane.getGraphics();
                 draw((Graphics2D) graphics, e.getPoint());

         private static class PaintlessPanel extends JPanel {
             public void paint(Graphics g) {
                 System.out.println("Paint even called and ignored.");
// draw((Graphics2D) g, getMousePosition(true));


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