NEWT/OSX: Fix Memory Leak ; Fix Occasional Crash Duer to Lifecycle Ops not on Main-Thread.

- Fix Memory Leak
  - NewtWindow::dealloc -> [NewtView release]: Fixes NewtView leak
  - NewtView::dealloc -> removeTrackingRect: Removes occasional crash (double free of TrackingRect)

- Fix Occasional Crash Duer to Lifecycle Ops not on Main-Thread.
  Perform OSX WindowDriver ops on Main-Thread:
    - close0
    - changeContentView0
    - createWindow0

- Cleaned up AddRemove unit tests, added TestAddRemove03GLWindowNEWT

7 files changed, 243 insertions, 69 deletions

diff --git a/src/newt/classes/jogamp/newt/driver/macosx/WindowDriver.java b/src/newt/classes/jogamp/newt/driver/macosx/WindowDriver.java
index 5755bdf11..89d53fbeb 100644
--- a/src/newt/classes/jogamp/newt/driver/macosx/WindowDriver.java
+++ b/src/newt/classes/jogamp/newt/driver/macosx/WindowDriver.java
@@ -50,6 +50,7 @@ import jogamp.newt.WindowImpl;
 import jogamp.newt.driver.DriverClearFocus;
 import jogamp.newt.driver.DriverUpdatePosition;
 
+import com.jogamp.common.util.Function;
 import com.jogamp.newt.event.InputEvent;
 import com.jogamp.newt.event.KeyEvent;
 
@@ -86,7 +87,10 @@ public class WindowDriver extends WindowImpl implements MutableSurface, DriverCl
             sscSurfaceHandle = 0;
             isOffscreenInstance = false;            
             if (0 != handle) {
-                close0(handle);
+                OSXUtil.RunOnMainThread(true, new Runnable() {
+                   public void run() {
+                       close0( handle );
+                   } } );
             }
         } catch (Throwable t) {
             if(DEBUG_IMPLEMENTATION) { 
@@ -378,24 +382,36 @@ public class WindowDriver extends WindowImpl implements MutableSurface, DriverCl
         try {
             if(0!=getWindowHandle()) {
                 // save the view .. close the window
-                surfaceHandle = changeContentView0(getParentWindowHandle(), getWindowHandle(), 0);
+                surfaceHandle = OSXUtil.RunOnMainThread(true, new Function<Long, Object>() {
+                    public Long eval(Object... args) {
+                        return Long.valueOf( 
+                                changeContentView0(getParentWindowHandle(), getWindowHandle(), 0) );
+                    } } ).longValue();
                 if(recreate && 0==surfaceHandle) {
                     throw new NativeWindowException("Internal Error - recreate, window but no view");
                 }
-                close0(getWindowHandle());
+                OSXUtil.RunOnMainThread(true, new Runnable() {
+                   public void run() {
+                       close0( getWindowHandle() );
+                   } } );
                 setWindowHandle(0);
             } else {
                 surfaceHandle = 0;
             }
-            setWindowHandle(createWindow0(getParentWindowHandle(),
-                                 pS.getX(), pS.getY(), width, height,
-                                 (getGraphicsConfiguration().getChosenCapabilities().isBackgroundOpaque() && !offscreenInstance),
-                                 fullscreen,
-                                 ((isUndecorated() || offscreenInstance) ?
-                                   NSBorderlessWindowMask :
-                                   NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask),
-                                 NSBackingStoreBuffered, 
-                                 getScreen().getIndex(), surfaceHandle));
+            
+            setWindowHandle( OSXUtil.RunOnMainThread(true, new Function<Long, Object>() {
+                public Long eval(Object... args) {
+                    return Long.valueOf(
+                            createWindow0( getParentWindowHandle(),
+                                    pS.getX(), pS.getY(), width, height,
+                                    (getGraphicsConfiguration().getChosenCapabilities().isBackgroundOpaque() && !offscreenInstance),
+                                    fullscreen,
+                                    ( (isUndecorated() || offscreenInstance) ? NSBorderlessWindowMask :
+                                      NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask ),
+                                    NSBackingStoreBuffered, 
+                                    getScreen().getIndex(), surfaceHandle) );
+                } } ).longValue() );                
+            
             if (getWindowHandle() == 0) {
                 throw new NativeWindowException("Could create native window "+Thread.currentThread().getName()+" "+this);
             }
@@ -411,6 +427,7 @@ public class WindowDriver extends WindowImpl implements MutableSurface, DriverCl
     }
     
     protected static native boolean initIDs0();
+    /** Must be called on Main-Thread */
     private native long createWindow0(long parentWindowHandle, int x, int y, int w, int h,
                                      boolean opaque, boolean fullscreen, int windowStyle,
                                      int backingStoreType,
@@ -422,9 +439,11 @@ public class WindowDriver extends WindowImpl implements MutableSurface, DriverCl
     /** in case of a child window, it actually only issues orderBack(..) */
     private native void orderOut0(long window);
     private native void orderFront0(long window);
+    /** Must be called on Main-Thread */
     private native void close0(long window);
     private native void setTitle0(long window, String title);
     private native long contentView0(long window);
+    /** Must be called on Main-Thread */
     private native long changeContentView0(long parentWindowOrViewHandle, long window, long view);
     private native void setContentSize0(long window, int w, int h);
     private native void setFrameTopLeftPoint0(long parentWindowHandle, long window, int x, int y);
diff --git a/src/newt/native/MacWindow.m b/src/newt/native/MacWindow.m
index b9c339285..94363624f 100644
--- a/src/newt/native/MacWindow.m
+++ b/src/newt/native/MacWindow.m
@@ -553,7 +553,9 @@ JNIEXPORT jboolean JNICALL Java_jogamp_newt_driver_macosx_WindowDriver_initIDs0
     return (jboolean) res;
 }
 
-/*
+/**
+ * Method is called on Main-Thread, hence no special invocation required inside method.
+ *
  * Class:     jogamp_newt_driver_macosx_WindowDriver
  * Method:    createWindow0
  * Signature: (JIIIIZIIIJ)J
@@ -706,19 +708,10 @@ NS_ENDHANDLER
 
     return (jlong) ((intptr_t) myWindow);
 }
-// Footnote: Our view handling produces random 'Assertion failure' even w/o parenting:
-//
-// [NSThemeFrame lockFocus], /SourceCache/AppKit/AppKit-1138.23/AppKit.subproj/NSView.m:6053
-// [NSThemeFrame(0x7fe94bc72c80) lockFocus] failed with window=0x7fe94bc445a0, windowNumber=9425, [self isHiddenOrHasHiddenAncestor]=0
-//                       ..
-// AppKit                0x00007fff89621001 -[NSView lockFocus] + 250
-// AppKit                0x00007fff8961eafa -[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] + 3780
-// AppKit                0x00007fff8961793e -[NSView displayIfNeeded] + 1676
-// AppKit                0x00007fff8961707d _handleWindowNeedsDisplayOrLayoutOrUpdateConstraints + 648
-//                       
 
-
-/*
+/**
+ * Method is called on Main-Thread, hence no special invocation required inside method.
+ *
  * Class:     jogamp_newt_driver_macosx_WindowDriver
  * Method:    close0
  * Signature: (J)V
@@ -761,8 +754,6 @@ NS_DURING
             [mView exitFullScreenModeWithOptions: NULL];
         }
         // Note: mWin's release will also release it's mView!
-        // [mWin setContentView: nil];
-        // [mView release];
     }
 NS_HANDLER
 NS_ENDHANDLER
@@ -770,7 +761,8 @@ NS_ENDHANDLER
     if(NULL!=pWin) {
         [mWin detachFromParent: pWin];
     }
-    [mWin performSelectorOnMainThread:@selector(orderOut:) withObject:mWin waitUntilDone:NO];
+    // [mWin performSelectorOnMainThread:@selector(orderOut:) withObject:mWin waitUntilDone:NO];
+    [mWin orderOut: mWin];
 
     DBG_PRINT( "windowClose.1 - %p,%d view %p,%d, parent %p\n", 
         mWin, getRetainCount(mWin), mView, getRetainCount(mView), pWin);
@@ -778,7 +770,8 @@ NS_ENDHANDLER
     // Only release window, if release is not yet in process.
     // E.g. destroyNotifySent:=true set by NewtMacWindow::windowWillClose(), i.e. window-close was clicked.
     if(!destroyNotifySent) { 
-        [mWin performSelectorOnMainThread:@selector(release) withObject:nil waitUntilDone:NO];
+        // [mWin performSelectorOnMainThread:@selector(release) withObject:nil waitUntilDone:NO];
+        [mWin release];
     }
 
     DBG_PRINT( "windowClose.X - %p,%d, released %d, view %p,%d, parent %p\n", 
@@ -960,7 +953,9 @@ JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_macosx_WindowDriver_contentView0
     return res;
 }
 
-/*
+/**
+ * Method is called on Main-Thread, hence no special invocation required inside method.
+ *
  * Class:     jogamp_newt_driver_macosx_WindowDriver
  * Method:    changeContentView
  * Signature: (J)J
diff --git a/src/newt/native/NewtMacWindow.m b/src/newt/native/NewtMacWindow.m
index 5b826566b..e69f74dfb 100644
--- a/src/newt/native/NewtMacWindow.m
+++ b/src/newt/native/NewtMacWindow.m
@@ -107,6 +107,7 @@ static jmethodID windowRepaintID = NULL;
 
 - (id)initWithFrame:(NSRect)frameRect
 {
+    id res = [super initWithFrame:frameRect];
     javaWindowObject = NULL;
 
     jvmHandle = NULL;
@@ -129,28 +130,35 @@ static jmethodID windowRepaintID = NULL;
     */
     myCursor = NULL;
 
-    return [super initWithFrame:frameRect];
+    DBG_PRINT("NewtView::create: %p (refcnt %d)\n", res, (int)[res retainCount]);
+    return res;
 }
 
 - (void) release
 {
+    DBG_PRINT("NewtView::release.0: %p (refcnt %d)\n", self, (int)[self retainCount]);
 #ifdef VERBOSE_ON
-    NSLog(@"NewtView::release\n");
-    NSLog(@"%@",[NSThread callStackSymbols]);
+    // NSLog(@"%@",[NSThread callStackSymbols]);
 #endif
     [super release];
 }
 
 - (void) dealloc
 {
+    DBG_PRINT("NewtView::dealloc.0: %p (refcnt %d), ptrTrackingTag %d\n", self, (int)[self retainCount], (int)ptrTrackingTag);
     if(softLocked) {
         NSLog(@"NewtView::dealloc: softLock still hold @ dealloc!\n");
     }
+    if(0 != ptrTrackingTag) {
+        // [self removeCursorRect: ptrRect cursor: myCursor];
+        [self removeTrackingRect: ptrTrackingTag];
+        ptrTrackingTag = 0;
+    }
     pthread_mutex_destroy(&softLockSync);
 #ifdef VERBOSE_ON
-    NSLog(@"NewtView::dealloc\n");
-    NSLog(@"%@",[NSThread callStackSymbols]);
+    //NSLog(@"%@",[NSThread callStackSymbols]);
 #endif
+    DBG_PRINT("NewtView::dealloc.X: %p\n", self);
     [super dealloc];
 }
 
@@ -390,25 +398,31 @@ static jmethodID windowRepaintID = NULL;
     mouseInside = NO;
     cursorIsHidden = NO;
     realized = YES;
+    DBG_PRINT("NewtWindow::create: %p (refcnt %d)\n", res, (int)[res retainCount]);
     return res;
 }
 
 - (void) release
 {
+    DBG_PRINT("NewtWindow::release.0: %p (refcnt %d)\n", self, (int)[self retainCount]);
 #ifdef VERBOSE_ON
-    NSLog(@"NewtWindow::release\n");
-    NSLog(@"%@",[NSThread callStackSymbols]);
+    // NSLog(@"%@",[NSThread callStackSymbols]);
 #endif
     [super release];
 }
 
 - (void) dealloc
 {
+    DBG_PRINT("NewtWindow::dealloc.0: %p (refcnt %d)\n", self, (int)[self retainCount]);
 #ifdef VERBOSE_ON
-    NSLog(@"NewtWindow::dealloc\n");
-    NSLog(@"%@",[NSThread callStackSymbols]);
+    // NSLog(@"%@",[NSThread callStackSymbols]);
 #endif
+    NewtView* mView = (NewtView *)[self contentView];
+    if( NULL != mView ) {
+        [mView release];
+    }
     [super dealloc];
+    DBG_PRINT("NewtWindow::dealloc.X: %p\n", self);
 }
 
 - (void) setUnrealized
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove01GLCanvasSwingAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove01GLCanvasSwingAWT.java
index a14364e05..ce8f9adc8 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove01GLCanvasSwingAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove01GLCanvasSwingAWT.java
@@ -50,13 +50,14 @@ import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
-import com.jogamp.opengl.test.junit.jogl.demos.gl2.Gears;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
 import com.jogamp.opengl.test.junit.util.UITestCase;
 
 public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
     static long durationPerTest = 50;
     static int addRemoveCount = 15;
-    static boolean shallUseOffscreenFBOLayer = false;
+    static boolean noOnscreenTest = false;
+    static boolean noOffscreenTest = false;
     static boolean shallUseOffscreenPBufferLayer = false;
     static GLProfile glp;
     static int width, height;
@@ -64,8 +65,8 @@ public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
 
     @BeforeClass
     public static void initClass() {
-        if(GLProfile.isAvailable(GLProfile.GL2)) {
-            glp = GLProfile.get(GLProfile.GL2);
+        if(GLProfile.isAvailable(GLProfile.GL2ES2)) {
+            glp = GLProfile.get(GLProfile.GL2ES2);
             Assert.assertNotNull(glp);
             width  = 640;
             height = 480;
@@ -139,6 +140,7 @@ public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
     {
 
         for(int i=0; i<addRemoveOpCount; i++) {
+            System.err.println("Loop # "+i+" / "+addRemoveCount);
             final GLCanvas glc = new GLCanvas(caps);
             Assert.assertNotNull(glc);
             if( !onscreen ) {
@@ -148,7 +150,9 @@ public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
             glc.setMinimumSize(glc_sz);
             glc.setPreferredSize(glc_sz);
             glc.setSize(glc_sz);
-            glc.addGLEventListener(new Gears());
+            final GearsES2 gears = new GearsES2(1);
+            gears.setVerbose(false);
+            glc.addGLEventListener(gears);
             
             final JFrame[] top = new JFrame[] { null };
             final Container glcCont = create(top, width, height, i);
@@ -172,11 +176,11 @@ public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
     public void test01Onscreen()
             throws AWTException, InterruptedException, InvocationTargetException
     {
-        if( shallUseOffscreenFBOLayer || shallUseOffscreenPBufferLayer || JAWTUtil.isOffscreenLayerRequired() ) {
-            System.err.println("Offscreen test requested or platform requires it.");
+        if( noOnscreenTest || JAWTUtil.isOffscreenLayerRequired() ) {
+            System.err.println("No onscreen test requested or platform doesn't support onscreen rendering.");
             return;
         }
-        GLCapabilities caps = new GLCapabilities(GLProfile.getDefault());
+        GLCapabilities caps = new GLCapabilities(glp);
         if(shallUseOffscreenPBufferLayer) {
             caps.setPBuffer(true);
             caps.setOnscreen(true); // simulate normal behavior ..
@@ -188,11 +192,11 @@ public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
     public void test02Offscreen()
             throws AWTException, InterruptedException, InvocationTargetException
     {
-        if( !JAWTUtil.isOffscreenLayerSupported() ) {
-            System.err.println("Platform doesn't support offscreen test.");
+        if( noOffscreenTest || !JAWTUtil.isOffscreenLayerSupported() ) {
+            System.err.println("No offscreen test requested or platform doesn't support offscreen rendering.");
             return;
         }
-        GLCapabilities caps = new GLCapabilities(GLProfile.getDefault());
+        GLCapabilities caps = new GLCapabilities(glp);
         if(shallUseOffscreenPBufferLayer) {
             caps.setPBuffer(true);
             caps.setOnscreen(true); // simulate normal behavior ..
@@ -212,8 +216,10 @@ public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
                 try {
                     addRemoveCount = Integer.parseInt(args[i]);
                 } catch (Exception ex) { ex.printStackTrace(); }
-            } else if(args[i].equals("-layeredFBO")) {
-                shallUseOffscreenFBOLayer = true;
+            } else if(args[i].equals("-noOnscreen")) {
+                noOnscreenTest = true;
+            } else if(args[i].equals("-noOffscreen")) {
+                noOffscreenTest = true;
             } else if(args[i].equals("-layeredPBuffer")) {
                 shallUseOffscreenPBufferLayer = true;
             } else if(args[i].equals("-wait")) {
@@ -224,7 +230,8 @@ public class TestAddRemove01GLCanvasSwingAWT extends UITestCase {
         
         System.err.println("addRemoveCount                "+addRemoveCount);
         
-        System.err.println("shallUseOffscreenFBOLayer     "+shallUseOffscreenFBOLayer);
+        System.err.println("noOnscreenTest                "+noOnscreenTest);
+        System.err.println("noOffscreenTest               "+noOffscreenTest);
         System.err.println("shallUseOffscreenPBufferLayer "+shallUseOffscreenPBufferLayer);
         if(waitForKey) {
             UITestCase.waitForKey("Start");
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove02GLWindowNewtCanvasAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove02GLWindowNewtCanvasAWT.java
index d67662116..3d78943f9 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove02GLWindowNewtCanvasAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove02GLWindowNewtCanvasAWT.java
@@ -52,13 +52,14 @@ import org.junit.Test;
 
 import com.jogamp.newt.awt.NewtCanvasAWT;
 import com.jogamp.newt.opengl.GLWindow;
-import com.jogamp.opengl.test.junit.jogl.demos.gl2.Gears;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
 import com.jogamp.opengl.test.junit.util.UITestCase;
 
 public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
     static long durationPerTest = 50;
     static int addRemoveCount = 15;
-    static boolean shallUseOffscreenFBOLayer = false;
+    static boolean noOnscreenTest = false;
+    static boolean noOffscreenTest = false;
     static boolean shallUseOffscreenPBufferLayer = false;
     static GLProfile glp;
     static int width, height;
@@ -66,8 +67,8 @@ public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
 
     @BeforeClass
     public static void initClass() {
-        if(GLProfile.isAvailable(GLProfile.GL2)) {
-            glp = GLProfile.get(GLProfile.GL2);
+        if(GLProfile.isAvailable(GLProfile.GL2ES2)) {
+            glp = GLProfile.get(GLProfile.GL2ES2);
             Assert.assertNotNull(glp);
             width  = 640;
             height = 480;
@@ -141,8 +142,9 @@ public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
     {
 
         for(int i=0; i<addRemoveOpCount; i++) {
+            System.err.println("Loop # "+i+" / "+addRemoveCount);
             final GLWindow glw = GLWindow.create(caps);
-            
+            Assert.assertNotNull(glw);            
             final NewtCanvasAWT glc = new NewtCanvasAWT(glw);
             Assert.assertNotNull(glc);
             if( !onscreen ) {
@@ -152,7 +154,9 @@ public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
             glc.setMinimumSize(glc_sz);
             glc.setPreferredSize(glc_sz);
             glc.setSize(glc_sz);
-            glw.addGLEventListener(new Gears());
+            final GearsES2 gears = new GearsES2(1);
+            gears.setVerbose(false);
+            glw.addGLEventListener(gears);
             
             final JFrame[] top = new JFrame[] { null };
             final Container glcCont = create(top, width, height, i);
@@ -177,11 +181,11 @@ public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
     public void test01Onscreen()
             throws AWTException, InterruptedException, InvocationTargetException
     {
-        if( shallUseOffscreenFBOLayer || shallUseOffscreenPBufferLayer || JAWTUtil.isOffscreenLayerRequired() ) {
-            System.err.println("Offscreen test requested or platform requires it.");
+        if( noOnscreenTest || JAWTUtil.isOffscreenLayerRequired() ) {
+            System.err.println("No onscreen test requested or platform doesn't support onscreen rendering.");
             return;
         }
-        GLCapabilities caps = new GLCapabilities(GLProfile.getDefault());
+        GLCapabilities caps = new GLCapabilities(glp);
         if(shallUseOffscreenPBufferLayer) {
             caps.setPBuffer(true);
             caps.setOnscreen(true); // simulate normal behavior ..
@@ -193,11 +197,11 @@ public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
     public void test02Offscreen()
             throws AWTException, InterruptedException, InvocationTargetException
     {
-        if( !JAWTUtil.isOffscreenLayerSupported() ) {
-            System.err.println("Platform doesn't support offscreen test.");
+        if( noOffscreenTest || !JAWTUtil.isOffscreenLayerSupported() ) {
+            System.err.println("No offscreen test requested or platform doesn't support offscreen rendering.");
             return;
         }
-        GLCapabilities caps = new GLCapabilities(GLProfile.getDefault());
+        GLCapabilities caps = new GLCapabilities(glp);
         if(shallUseOffscreenPBufferLayer) {
             caps.setPBuffer(true);
             caps.setOnscreen(true); // simulate normal behavior ..
@@ -217,8 +221,10 @@ public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
                 try {
                     addRemoveCount = Integer.parseInt(args[i]);
                 } catch (Exception ex) { ex.printStackTrace(); }
-            } else if(args[i].equals("-layeredFBO")) {
-                shallUseOffscreenFBOLayer = true;
+            } else if(args[i].equals("-noOnscreen")) {
+                noOnscreenTest = true;
+            } else if(args[i].equals("-noOffscreen")) {
+                noOffscreenTest = true;
             } else if(args[i].equals("-layeredPBuffer")) {
                 shallUseOffscreenPBufferLayer = true;
             } else if(args[i].equals("-wait")) {
@@ -229,7 +235,8 @@ public class TestAddRemove02GLWindowNewtCanvasAWT extends UITestCase {
         
         System.err.println("addRemoveCount                "+addRemoveCount);
         
-        System.err.println("shallUseOffscreenFBOLayer     "+shallUseOffscreenFBOLayer);
+        System.err.println("noOnscreenTest                "+noOnscreenTest);
+        System.err.println("noOffscreenTest               "+noOffscreenTest);
         System.err.println("shallUseOffscreenPBufferLayer "+shallUseOffscreenPBufferLayer);
         if(waitForKey) {
             UITestCase.waitForKey("Start");
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove03GLWindowNEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove03GLWindowNEWT.java
new file mode 100644
index 000000000..9d7a4026b
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestAddRemove03GLWindowNEWT.java
@@ -0,0 +1,130 @@
+/**
+ * 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 java.lang.reflect.InvocationTargetException;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLProfile;
+
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+
+public class TestAddRemove03GLWindowNEWT extends UITestCase {
+    static long durationPerTest = 50;
+    static int addRemoveCount = 15;
+    static GLProfile glp;
+    static int width, height;
+    static boolean waitForKey = false;
+
+    @BeforeClass
+    public static void initClass() {
+        if(GLProfile.isAvailable(GLProfile.GL2ES2)) {
+            glp = GLProfile.get(GLProfile.GL2ES2);
+            Assert.assertNotNull(glp);
+            width  = 640;
+            height = 480;
+        } else {
+            setTestSupported(false);
+        }
+    }
+
+    @AfterClass
+    public static void releaseClass() {
+    }
+    
+    protected void runTestGL(GLCapabilities caps, int addRemoveOpCount)
+            throws InterruptedException, InvocationTargetException
+    {
+
+        for(int i=0; i<addRemoveOpCount; i++) {
+            System.err.println("Loop # "+i+" / "+addRemoveCount);
+            final GLWindow glw = GLWindow.create(caps);
+            Assert.assertNotNull(glw); 
+            glw.setTitle("GLWindow #"+i);
+            glw.setSize(width, height);
+            final GearsES2 gears = new GearsES2(1);
+            gears.setVerbose(false);
+            glw.addGLEventListener(gears);
+            
+            glw.setVisible(true);
+                        
+            final long t0 = System.currentTimeMillis();
+            do {
+                glw.display();
+                Thread.sleep(10);
+            } while ( ( System.currentTimeMillis() - t0 ) < durationPerTest ) ;
+            
+            System.err.println("GLWindow: "+glw.getChosenGLCapabilities());
+            
+            glw.destroy();
+        }
+    }
+
+    @Test
+    public void test01Onscreen()
+            throws InterruptedException, InvocationTargetException
+    {
+        GLCapabilities caps = new GLCapabilities(glp);
+        runTestGL(caps, addRemoveCount);
+    }
+
+    public static void main(String args[]) throws IOException {        
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                i++;
+                try {
+                    durationPerTest = Long.parseLong(args[i]);
+                } catch (Exception ex) { ex.printStackTrace(); }
+            } else if(args[i].equals("-loops")) {
+                i++;
+                try {
+                    addRemoveCount = Integer.parseInt(args[i]);
+                } catch (Exception ex) { ex.printStackTrace(); }
+            } else if(args[i].equals("-wait")) {
+                waitForKey = true;
+            }            
+        }
+        System.err.println("waitForKey                    "+waitForKey);
+        
+        System.err.println("addRemoveCount                "+addRemoveCount);
+        
+        if(waitForKey) {
+            UITestCase.waitForKey("Start");
+        }
+        org.junit.runner.JUnitCore.main(TestAddRemove03GLWindowNEWT.class.getName());
+    }
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/awt/TestBug664GLCanvasSetVisibleSwingAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/awt/TestBug664GLCanvasSetVisibleSwingAWT.java
index f2fae293b..52fa83b65 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/awt/TestBug664GLCanvasSetVisibleSwingAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/awt/TestBug664GLCanvasSetVisibleSwingAWT.java
@@ -172,7 +172,9 @@ public class TestBug664GLCanvasSetVisibleSwingAWT extends UITestCase {
                 @Override
                 public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {}
             });
-            glc.addGLEventListener(new GearsES2());
+            final GearsES2 gears = new GearsES2(1);
+            gears.setVerbose(false);
+            glc.addGLEventListener(gears);
             
             final JFrame[] top = new JFrame[] { null };
             final Container glcCont = create(top, width, height, i);