Add unit test for bug 461, offscreen supersampling

This is a unit test for a bug that occurs on Windows
when the stencil buffer is turned on for an offscreen
buffer. This bug doesn't appear on CentOS 5.4, or in
JOGL 1.1.1.a.

1 files changed, 173 insertions, 0 deletions

diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/awt/TestBug461OffscreenSupersamplingSwingAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/awt/TestBug461OffscreenSupersamplingSwingAWT.java
new file mode 100644
index 000000000..797816690
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/awt/TestBug461OffscreenSupersamplingSwingAWT.java
@@ -0,0 +1,173 @@
+/**
+ * Copyright 2011 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.opengl.test.junit.jogl.awt;
+
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+/**
+ * Copyright 2011 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+ 
+import java.awt.image.BufferedImage;
+
+import javax.media.opengl.GL;
+import javax.media.opengl.GL2;
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLDrawableFactory;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLPbuffer;
+import javax.media.opengl.GLProfile;
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.jogamp.opengl.test.junit.util.UITestCase;
+
+/**
+ * Tests for bug 461, a failure of GLDrawableFactory.createGLPbuffer() on Windows
+ * when the stencil buffer is turned on.
+ *
+ * @author Wade Walker (from code sample provided by Owen Dimond)
+ */
+public class TestBug461OffscreenSupersamplingSwingAWT extends UITestCase implements GLEventListener {
+    JFrame jframe;
+    GLPbuffer offScreenBuffer;
+    
+    private void render(GLAutoDrawable drawable) {
+        GL2 gl = drawable.getGL().getGL2();
+        Assert.assertNotNull(gl);
+        gl.glClear(GL.GL_COLOR_BUFFER_BIT);      
+
+        // draw a triangle filling the window
+        gl.glBegin(GL.GL_TRIANGLES);
+        gl.glColor3f(1, 0, 0);
+        gl.glVertex2d(-1, -1);
+        gl.glColor3f(0, 1, 0);
+        gl.glVertex2d(0, 1);
+        gl.glColor3f(0, 0, 1);
+        gl.glVertex2d(1, -1);
+        gl.glEnd();
+    }
+    
+    @Override
+    public void init(GLAutoDrawable drawable) {                        
+    }
+
+    @Override
+    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+    }    
+    
+    @Override
+    public void display(GLAutoDrawable drawable) {             
+        render(offScreenBuffer);
+        BufferedImage outputImage = com.jogamp.opengl.util.awt.Screenshot.readToBufferedImage(200, 200, false);        
+        Assert.assertNotNull(outputImage);
+        ImageIcon imageIcon = new ImageIcon(outputImage);
+        JLabel imageLabel = new JLabel(imageIcon);        
+        jframe.getContentPane().add(imageLabel);
+    }
+
+    @Override
+    public void dispose(GLAutoDrawable drawable) {  
+        jframe.setVisible(false);
+        jframe.dispose();
+    }
+
+    @Test
+    public void testOffscreenSupersampling() {
+        jframe = new JFrame("Offscreen Supersampling");
+        Assert.assertNotNull(jframe);
+        jframe.setSize( 300, 300);
+        jframe.addWindowListener(new WindowAdapter() {
+            public void windowClosing(WindowEvent e) {
+                System.exit(0);
+            }
+        });
+
+        GLProfile glp = GLProfile.get(GLProfile.GL2);
+        Assert.assertNotNull(glp);
+        
+        GLDrawableFactory fac = GLDrawableFactory.getFactory(glp);
+        Assert.assertNotNull(fac);
+        
+        Assert.assertTrue( fac.canCreateGLPbuffer(GLProfile.getDefaultDesktopDevice()) );
+        
+        GLCapabilities glCap = new GLCapabilities(glp);
+        Assert.assertNotNull(glCap);
+        
+        // COMMENTING OUT THIS LINE FIXES THE ISSUE. 
+        // Setting this in JOGL1 works. Thus this is a JOGL2 issue.
+        glCap.setSampleBuffers(true);
+      
+        // Without line below, there is an error on Windows.
+        glCap.setDoubleBuffered(false);
+        // Needed for drop shadows
+        glCap.setStencilBits(1);
+
+        //makes a new buffer
+        offScreenBuffer = fac.createGLPbuffer(GLProfile.getDefaultDesktopDevice(), glCap, null, 200, 200, null);
+        Assert.assertNotNull(offScreenBuffer);
+        offScreenBuffer.addGLEventListener(this);        
+        offScreenBuffer.display();
+        jframe.setVisible( true );
+    }
+
+    public static void main(String args[]) {
+        org.junit.runner.JUnitCore.main(TestBug461OffscreenSupersamplingSwingAWT.class.getName());
+    }
+}
+