Using OpenGL in Java2d seems broken.

From:
Daniel Pitts <newsgroup.spamfilter@virtualinfinity.net>
Newsgroups:
comp.lang.java.gui
Date:
Mon, 11 Aug 2008 09:21:17 -0700
Message-ID:
<48a087c5$0$16970$7836cce5@newsrazor.net>
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.setPaint(Color.blue);
         g2d.fill(new Rectangle(0, 0, 640, 480));
         Ellipse2D.Double circle = new Ellipse2D.Double();
         if (mousePosition != null) {
             g2d.setPaint(Color.yellow);
             circle.setFrame(mousePosition, new Dimension(10, 10));
             g2d.fill(circle);
         }
     }

     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));
             frame.getContentPane().add(pane);
             frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
             frame.pack();
             frame.setVisible(true);
             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());
                 graphics.dispose();
             }
         }

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

</SSCCE>

Thanks,
Daniel.
--
Daniel Pitts' Tech Blog: <http://virtualinfinity.net/wordpress/>

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