Bug 665 (part 1) - Allow dis-association of GLContext's GLDrawable ..

Changes allowing re-association (incl. null) of GLContext/GLDrawable:

- GLAutoDrawable: Refine API doc 'setContext(..)'

- GLContext: Refine API doc: 'setGLDrawable(..)' 'getGLDrawable()'

- GLContextImpl.setGLDrawable(): Handle null drawable

- GLAutoDrawableDelegate/GLAutoDrawableBase: Allow null GLContext

- GLDrawableHelper.switchContext(..)/recreateGLDrawable(): Balance GLContext.setGLDrawable(..) calls

- New GLEventListenerState, holding state vector [GLEventListener, GLContext, .. ]
  impl. relocation of all components from/to GLAutoDrawable.

- GLDrawableUtil
  - Using GLEventListenerState for swapGLContextAndAllGLEventListener(..)

+++

NEWT Window*:
  - getDisplayHandle() is 'final', no more 'shortcut' code allowed
    due to re-association incl. display handle.

  - close*:
    - close config's device (was missing)
    - null config

+++

Changes allowing reconfig of Display handle as required
to re-associate pre-existing GLContext to a 'window':

- AbstractGraphicsDevice: Add isHandleOwner() / clearHandleOwner()
  - Impl. in X11GraphicsDevice and EGLGraphicsDevice, NOP in DefaultGraphicsDevice

- DefaultGraphicsConfiguration add 'setScreen(..)'

- MutableGraphicsConfiguration
  - Make DefaultGraphicsConfiguration.setScreen(..) public

- NativeWindowFactory add 'createScreen(String type, AbstractGraphicsDevice device, int screen)'
  - Refactored from SWTAccessor

- NativeWindow x11ErrorHandler: Dump Stack Trace in DEBUG mode, always.

3 files changed, 450 insertions, 13 deletions

diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLContextDrawableSwitchNEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLContextDrawableSwitch01NEWT.java
index 270322891..08a0857a9 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLContextDrawableSwitchNEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLContextDrawableSwitch01NEWT.java
@@ -59,7 +59,11 @@ import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
-public class TestGLContextDrawableSwitchNEWT extends UITestCase {
+/**
+ * Test re-association (switching) of GLContext/GLDrawables,
+ * i.e. ctx1/draw1, ctx2/draw2 -> ctx1/draw2, ctx2/draw1.
+ */
+public class TestGLContextDrawableSwitch01NEWT extends UITestCase {
     static GLProfile glp;
     static GLCapabilities caps;
     static int width, height;
@@ -72,7 +76,6 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
         height = 256;
     }
 
-    /** Note: No GLContext is attached w/ this implementation ! */
     private GLAutoDrawable createGLAutoDrawable(GLCapabilities caps, int x, int y, int width, int height, WindowListener wl) throws InterruptedException {
         final Window window = NewtFactory.createWindow(caps);
         Assert.assertNotNull(window);
@@ -128,21 +131,23 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
         GLAutoDrawable glad2 = createGLAutoDrawable(caps, 2*64+width, 64, width+100, height+100, quitAdapter);
         
         // create single context using glad1 and assign it to glad1,
-        // after destroying the prev. context!
+        // destroy the prev. context afterwards.
         {
-            final GLContext oldCtx = glad1.getContext();
+            final GLContext newCtx = glad1.createContext(null);
+            Assert.assertNotNull(newCtx);        
+            final GLContext oldCtx = glad1.setContext(newCtx);
             Assert.assertNotNull(oldCtx);
             oldCtx.destroy();
-            final GLContext singleCtx = glad1.createContext(null);
-            Assert.assertNotNull(singleCtx);        
-            int res = singleCtx.makeCurrent();
+            final int res = newCtx.makeCurrent();
             Assert.assertTrue(GLContext.CONTEXT_CURRENT_NEW==res || GLContext.CONTEXT_CURRENT==res);
-            singleCtx.release();
-            glad1.setContext(singleCtx);
+            newCtx.release();
         }
         
+        final SnapshotGLEventListener snapshotGLEventListener = new SnapshotGLEventListener();        
         GearsES2 gears = new GearsES2(1);
         glad1.addGLEventListener(gears);
+        glad1.addGLEventListener(snapshotGLEventListener);
+        snapshotGLEventListener.setMakeSnapshot();
         
         Animator animator = new Animator();
         animator.add(glad1);
@@ -174,7 +179,8 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
     
     @Test(timeout=30000)
     public void testSwitch2GLWindowOneDemo() throws InterruptedException {
-        GearsES2 gears = new GearsES2(1);
+        final SnapshotGLEventListener snapshotGLEventListener = new SnapshotGLEventListener();        
+        final GearsES2 gears = new GearsES2(1);
         final QuitAdapter quitAdapter = new QuitAdapter();
         
         GLWindow glWindow1 = GLWindow.create(caps);        
@@ -182,6 +188,7 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
         glWindow1.setSize(width, height);
         glWindow1.setPosition(64, 64);
         glWindow1.addGLEventListener(0, gears);
+        glWindow1.addGLEventListener(snapshotGLEventListener);
         glWindow1.addWindowListener(quitAdapter);
         
         GLWindow glWindow2 = GLWindow.create(caps);                
@@ -198,6 +205,8 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
         glWindow1.setVisible(true);
         glWindow2.setVisible(true);
 
+        snapshotGLEventListener.setMakeSnapshot();
+         
         int s = 0;
         long t0 = System.currentTimeMillis();
         long t1 = t0;
@@ -215,6 +224,8 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
                 System.err.println(s+" - B w1-h 0x"+Long.toHexString(glWindow1.getHandle())+",-ctx 0x"+Long.toHexString(glWindow1.getContext().getHandle()));
                 System.err.println(s+" - B w2-h 0x"+Long.toHexString(glWindow2.getHandle())+",-ctx 0x"+Long.toHexString(glWindow2.getContext().getHandle()));
                 System.err.println(s+" - switch - END "+ ( t1 - t0 ));
+                
+                snapshotGLEventListener.setMakeSnapshot();
             }
             Thread.sleep(100);
             t1 = System.currentTimeMillis();
@@ -228,15 +239,18 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
     
     @Test(timeout=30000)
     public void testSwitch2GLWindowEachWithOwnDemo() throws InterruptedException {
-        GearsES2 gears = new GearsES2(1);
-        RedSquareES2 rsquare = new RedSquareES2(1);
+        final GearsES2 gears = new GearsES2(1);
+        final RedSquareES2 rsquare = new RedSquareES2(1);
         final QuitAdapter quitAdapter = new QuitAdapter();
+        final SnapshotGLEventListener snapshotGLEventListener1 = new SnapshotGLEventListener();        
+        final SnapshotGLEventListener snapshotGLEventListener2 = new SnapshotGLEventListener();        
         
         GLWindow glWindow1 = GLWindow.create(caps);        
         glWindow1.setTitle("win1");
         glWindow1.setSize(width, height);
         glWindow1.setPosition(64, 64);
         glWindow1.addGLEventListener(0, gears);
+        glWindow1.addGLEventListener(snapshotGLEventListener1);
         glWindow1.addWindowListener(quitAdapter);
         
         GLWindow glWindow2 = GLWindow.create(caps);                
@@ -244,6 +258,7 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
         glWindow2.setSize(width+100, height+100);
         glWindow2.setPosition(2*64+width, 64);
         glWindow2.addGLEventListener(0, rsquare);
+        glWindow2.addGLEventListener(snapshotGLEventListener2);
         glWindow2.addWindowListener(quitAdapter);
 
         Animator animator = new Animator();
@@ -254,6 +269,9 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
         glWindow1.setVisible(true);
         glWindow2.setVisible(true);
 
+        snapshotGLEventListener1.setMakeSnapshot();
+        snapshotGLEventListener2.setMakeSnapshot();
+        
         int s = 0;
         long t0 = System.currentTimeMillis();
         long t1 = t0;
@@ -268,6 +286,8 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
                 System.err.println(s+" - B w1-h 0x"+Long.toHexString(glWindow1.getHandle())+",-ctx 0x"+Long.toHexString(glWindow1.getContext().getHandle()));                
                 System.err.println(s+" - B w2-h 0x"+Long.toHexString(glWindow2.getHandle())+",-ctx 0x"+Long.toHexString(glWindow2.getContext().getHandle()));
                 System.err.println(s+" - switch - END "+ ( t1 - t0 ));
+                snapshotGLEventListener1.setMakeSnapshot();
+                snapshotGLEventListener2.setMakeSnapshot();
             }
             Thread.sleep(100);
             t1 = System.currentTimeMillis();
@@ -305,6 +325,6 @@ public class TestGLContextDrawableSwitchNEWT extends UITestCase {
         BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
         System.err.println("Press enter to continue");
         System.err.println(stdin.readLine()); */         
-        org.junit.runner.JUnitCore.main(TestGLContextDrawableSwitchNEWT.class.getName());
+        org.junit.runner.JUnitCore.main(TestGLContextDrawableSwitch01NEWT.class.getName());
     }
 }
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLContextDrawableSwitch11NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLContextDrawableSwitch11NEWT.java
new file mode 100644
index 000000000..cd308e165
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLContextDrawableSwitch11NEWT.java
@@ -0,0 +1,352 @@
+/**
+ * Copyright 2013 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.acore;
+
+import java.io.IOException;
+
+import com.jogamp.newt.NewtFactory;
+import com.jogamp.newt.Window;
+import com.jogamp.newt.event.WindowAdapter;
+import com.jogamp.newt.event.WindowEvent;
+import com.jogamp.newt.event.WindowListener;
+import com.jogamp.newt.event.WindowUpdateEvent;
+import com.jogamp.newt.opengl.GLWindow;
+
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLContext;
+import javax.media.opengl.GLDrawable;
+import javax.media.opengl.GLDrawableFactory;
+import javax.media.opengl.GLProfile;
+
+import jogamp.opengl.GLEventListenerState;
+
+import com.jogamp.opengl.GLAutoDrawableDelegate;
+import com.jogamp.opengl.util.Animator;
+
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
+import com.jogamp.opengl.test.junit.util.AWTRobotUtil;
+import com.jogamp.opengl.test.junit.util.GLEventListenerCounter;
+import com.jogamp.opengl.test.junit.util.QuitAdapter;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * Test re-association of GLContext/GLDrawables,
+ * here GLContext's survival of GLDrawable desctruction 
+ * and reuse w/ new or recreated GLDrawable.
+ * <p>
+ * See Bug 665 - https://jogamp.org/bugzilla/show_bug.cgi?id=665.
+ * </p>
+ */
+public class TestGLContextDrawableSwitch11NEWT extends UITestCase {
+    static GLProfile glp;
+    static GLCapabilities caps;
+    static int width, height;
+
+    @BeforeClass
+    public static void initClass() {
+        glp = GLProfile.getGL2ES2();
+        caps = new GLCapabilities(glp);
+        width  = 256;
+        height = 256;
+    }
+
+    private GLAutoDrawable createGLAutoDrawable(GLCapabilities caps, int x, int y, int width, int height, WindowListener wl) throws InterruptedException {
+        final Window window = NewtFactory.createWindow(caps);
+        Assert.assertNotNull(window);
+        window.setPosition(x, y);
+        window.setSize(width, height);
+        window.setVisible(true);
+        Assert.assertTrue(AWTRobotUtil.waitForVisible(window, true));
+        Assert.assertTrue(AWTRobotUtil.waitForRealized(window, true));
+            
+        final GLDrawableFactory factory = GLDrawableFactory.getFactory(caps.getGLProfile());
+        final GLDrawable drawable = factory.createGLDrawable(window);
+        Assert.assertNotNull(drawable);
+        
+        drawable.setRealized(true);
+        Assert.assertTrue(drawable.isRealized());
+        
+        final GLAutoDrawableDelegate glad = new GLAutoDrawableDelegate(drawable, null, window, false, null) {
+            @Override
+            protected void destroyImplInLock() {
+                super.destroyImplInLock();
+                window.destroy(); // destroys the actual window
+            }            
+        };
+        
+        // add basic window interaction
+        window.addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowRepaint(WindowUpdateEvent e) {
+                glad.windowRepaintOp();
+            }
+            @Override
+            public void windowResized(WindowEvent e) {
+                glad.windowResizedOp(window.getWidth(), window.getHeight());
+            }
+            @Override
+            public void windowDestroyNotify(WindowEvent e) {
+                glad.windowDestroyNotifyOp();
+            }
+        });
+        window.addWindowListener(wl);
+        
+        return glad;
+    }
+    
+    @Test(timeout=30000)
+    public void test01() throws InterruptedException {
+        final QuitAdapter quitAdapter = new QuitAdapter();
+        
+        final GLEventListenerCounter glelCounter = new GLEventListenerCounter();
+        final SnapshotGLEventListener snapshotGLEventListener = new SnapshotGLEventListener();        
+        final Animator animator = new Animator();
+        animator.start();
+        
+        final long t0 = System.currentTimeMillis();
+        final GLEventListenerState glls1;
+        
+        // - create glad1 w/o context
+        // - create context using glad1 and assign it to glad1
+        {
+            final GLAutoDrawable glad1 = createGLAutoDrawable(caps,         64, 64,     width,     height, quitAdapter);        
+            final GLContext context1 = glad1.createContext(null);
+            glad1.setContext(context1);
+            animator.add(glad1);
+            
+            glad1.addGLEventListener(glelCounter);
+            glad1.addGLEventListener(new GearsES2(1));
+            glad1.addGLEventListener(snapshotGLEventListener);
+            snapshotGLEventListener.setMakeSnapshot();
+                        
+            long t1 = System.currentTimeMillis();
+            
+            while( !quitAdapter.shouldQuit() && ( t1 - t0 ) < duration/2 ) {
+                Thread.sleep(100);
+                t1 = System.currentTimeMillis();
+            }
+    
+            // - dis-associate context from glad1
+            // - destroy glad1
+            Assert.assertEquals(1, glelCounter.initCount);
+            Assert.assertTrue(1 <= glelCounter.reshapeCount);
+            Assert.assertTrue(1 <= glelCounter.displayCount);
+            Assert.assertEquals(0, glelCounter.disposeCount);
+            Assert.assertEquals(context1, glad1.getContext());
+            Assert.assertEquals(3, glad1.getGLEventListenerCount());
+            Assert.assertEquals(context1.getGLReadDrawable(), glad1.getDelegatedDrawable());
+            Assert.assertEquals(context1.getGLDrawable(), glad1.getDelegatedDrawable());
+            
+            glls1 = GLEventListenerState.moveFrom(glad1);
+            
+            Assert.assertEquals(1, glelCounter.initCount);
+            Assert.assertTrue(1 <= glelCounter.reshapeCount);
+            Assert.assertTrue(1 <= glelCounter.displayCount);
+            Assert.assertEquals(0, glelCounter.disposeCount);
+            Assert.assertEquals(context1, glls1.context);
+            Assert.assertNull(context1.getGLReadDrawable());
+            Assert.assertNull(context1.getGLDrawable());
+            Assert.assertEquals(3, glls1.listenerCount());
+            Assert.assertEquals(true, glls1.isOwner());
+            Assert.assertEquals(null, glad1.getContext());
+            Assert.assertEquals(0, glad1.getGLEventListenerCount());
+            
+            glad1.destroy();
+            Assert.assertEquals(1, glelCounter.initCount);
+            Assert.assertTrue(1 <= glelCounter.reshapeCount);
+            Assert.assertTrue(1 <= glelCounter.displayCount);
+            Assert.assertEquals(0, glelCounter.disposeCount);
+        }
+        
+        // - create glad2 w/ survived context
+        {
+            final GLAutoDrawable glad2 = createGLAutoDrawable(caps, 2*64+width, 64, width+100, height+100, quitAdapter);
+            snapshotGLEventListener.setMakeSnapshot();
+            
+            Assert.assertEquals(null, glad2.getContext());
+            Assert.assertEquals(0, glad2.getGLEventListenerCount());
+            
+            glls1.moveTo(glad2);
+            
+            Assert.assertEquals(1, glelCounter.initCount);
+            Assert.assertTrue(1 <= glelCounter.reshapeCount);
+            Assert.assertTrue(1 <= glelCounter.displayCount);
+            Assert.assertEquals(0, glelCounter.disposeCount);
+            Assert.assertEquals(glls1.context, glad2.getContext());
+            Assert.assertEquals(3, glad2.getGLEventListenerCount());
+            Assert.assertEquals(glls1.context.getGLReadDrawable(), glad2.getDelegatedDrawable());
+            Assert.assertEquals(glls1.context.getGLDrawable(), glad2.getDelegatedDrawable());
+            Assert.assertEquals(false, glls1.isOwner());
+            
+            long t1 = System.currentTimeMillis();
+            
+            while( !quitAdapter.shouldQuit() && ( t1 - t0 ) < duration/1 ) {
+                Thread.sleep(100);
+                t1 = System.currentTimeMillis();
+            }
+    
+            glad2.destroy();
+            Assert.assertEquals(1, glelCounter.initCount);
+            Assert.assertTrue(1 <= glelCounter.reshapeCount);
+            Assert.assertTrue(1 <= glelCounter.displayCount);
+            Assert.assertEquals(1, glelCounter.disposeCount);
+        }
+        animator.stop();
+    }
+    
+    @Test(timeout=30000)
+    public void test02() throws InterruptedException {
+        final QuitAdapter quitAdapter = new QuitAdapter();
+        
+        final SnapshotGLEventListener snapshotGLEventListener = new SnapshotGLEventListener();        
+        final GLEventListenerCounter glelTracker = new GLEventListenerCounter();
+        final Animator animator = new Animator();
+        animator.start();
+        
+        final long t0 = System.currentTimeMillis();
+        final GLEventListenerState glls1;
+        
+        // - create glad1 w/o context
+        // - create context using glad1 and assign it to glad1
+        {
+            final GLWindow glad1 = GLWindow.create(caps);
+            glad1.setSize(width, height);
+            glad1.setPosition(64, 64);
+            glad1.addWindowListener(quitAdapter);
+            glad1.setVisible(true);
+            animator.add(glad1);
+            
+            glad1.addGLEventListener(glelTracker);
+            glad1.addGLEventListener(new GearsES2(1));
+            glad1.addGLEventListener(snapshotGLEventListener);
+            snapshotGLEventListener.setMakeSnapshot();
+                        
+            long t1 = System.currentTimeMillis();
+            
+            while( !quitAdapter.shouldQuit() && ( t1 - t0 ) < duration/2 ) {
+                Thread.sleep(100);
+                t1 = System.currentTimeMillis();
+            }
+    
+            // - dis-associate context from glad1
+            // - destroy glad1
+            Assert.assertEquals(1, glelTracker.initCount);
+            Assert.assertTrue(1 <= glelTracker.reshapeCount);
+            Assert.assertTrue(1 <= glelTracker.displayCount);
+            Assert.assertEquals(0, glelTracker.disposeCount);
+            Assert.assertEquals(3, glad1.getGLEventListenerCount());
+            Assert.assertEquals(glad1.getContext().getGLReadDrawable(), glad1.getDelegatedDrawable());
+            Assert.assertEquals(glad1.getContext().getGLDrawable(), glad1.getDelegatedDrawable());
+            
+            final GLContext context1 = glad1.getContext();
+            glls1 = GLEventListenerState.moveFrom(glad1);
+            
+            Assert.assertEquals(1, glelTracker.initCount);
+            Assert.assertTrue(1 <= glelTracker.reshapeCount);
+            Assert.assertTrue(1 <= glelTracker.displayCount);
+            Assert.assertEquals(0, glelTracker.disposeCount);
+            Assert.assertEquals(context1, glls1.context);
+            Assert.assertNull(context1.getGLReadDrawable());
+            Assert.assertNull(context1.getGLDrawable());
+            Assert.assertEquals(3, glls1.listenerCount());
+            Assert.assertEquals(true, glls1.isOwner());
+            Assert.assertEquals(null, glad1.getContext());
+            Assert.assertEquals(0, glad1.getGLEventListenerCount());
+            
+            glad1.destroy();
+            Assert.assertEquals(1, glelTracker.initCount);
+            Assert.assertTrue(1 <= glelTracker.reshapeCount);
+            Assert.assertTrue(1 <= glelTracker.displayCount);
+            Assert.assertEquals(0, glelTracker.disposeCount);
+        }
+        
+        // - create glad2 w/ survived context
+        {
+            final GLWindow glad2 = GLWindow.create(caps);
+            glad2.setSize(width+100, height+100);
+            glad2.setPosition(2*64+width, 64);
+            glad2.addWindowListener(quitAdapter);
+            glad2.setVisible(true);
+            snapshotGLEventListener.setMakeSnapshot();
+            
+            Assert.assertNotNull(glad2.getContext());
+            Assert.assertEquals(0, glad2.getGLEventListenerCount());
+            
+            glls1.moveTo(glad2);
+            
+            Assert.assertEquals(1, glelTracker.initCount);
+            Assert.assertTrue(1 <= glelTracker.reshapeCount);
+            Assert.assertTrue(1 <= glelTracker.displayCount);
+            Assert.assertEquals(0, glelTracker.disposeCount);
+            Assert.assertEquals(glls1.context, glad2.getContext());
+            Assert.assertEquals(3, glad2.getGLEventListenerCount());
+            Assert.assertEquals(glls1.context.getGLReadDrawable(), glad2.getDelegatedDrawable());
+            Assert.assertEquals(glls1.context.getGLDrawable(), glad2.getDelegatedDrawable());
+            Assert.assertEquals(false, glls1.isOwner());
+            
+            long t1 = System.currentTimeMillis();
+            
+            while( !quitAdapter.shouldQuit() && ( t1 - t0 ) < duration/1 ) {
+                Thread.sleep(100);
+                t1 = System.currentTimeMillis();
+            }
+    
+            glad2.destroy();
+            Assert.assertEquals(1, glelTracker.initCount);
+            Assert.assertTrue(1 <= glelTracker.reshapeCount);
+            Assert.assertTrue(1 <= glelTracker.displayCount);
+            Assert.assertEquals(1, glelTracker.disposeCount);
+        }
+        animator.stop();
+    }
+    
+    // default timing for 2 switches
+    static long duration = 2200; // ms
+
+    public static void main(String args[]) throws IOException {
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                i++;
+                try {
+                    duration = Integer.parseInt(args[i]);
+                } catch (Exception ex) { ex.printStackTrace(); }
+            }
+        }
+        /**
+        BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
+        System.err.println("Press enter to continue");
+        System.err.println(stdin.readLine()); */         
+        org.junit.runner.JUnitCore.main(TestGLContextDrawableSwitch11NEWT.class.getName());
+    }
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/util/GLEventListenerCounter.java b/src/test/com/jogamp/opengl/test/junit/util/GLEventListenerCounter.java
new file mode 100644
index 000000000..b121a4c2a
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/util/GLEventListenerCounter.java
@@ -0,0 +1,65 @@
+/**
+ * Copyright 2013 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.util;
+
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLEventListener;
+
+public class GLEventListenerCounter implements GLEventListener {
+    public int initCount = 0;
+    public int displayCount = 0;
+    public int reshapeCount = 0;
+    public int disposeCount = 0;
+    
+    public void reset() {
+        initCount = 0;
+        displayCount = 0;
+        reshapeCount = 0;
+        disposeCount = 0;            
+    }
+    
+    @Override
+    public void init(GLAutoDrawable drawable) {
+        initCount++;
+    }
+
+    @Override
+    public void dispose(GLAutoDrawable drawable) {
+        disposeCount++;            
+    }
+
+    @Override
+    public void display(GLAutoDrawable drawable) {
+        displayCount++;
+    }
+
+    @Override
+    public void reshape(GLAutoDrawable d, int x, int y, int width, int height) {
+        reshapeCount++;
+    }        
+}
\ No newline at end of file