Newt Window: Remove 'invalidate()' method, only 'destroy()' is required (and makes sense)

- WindowImpl/GLWindow: Cleanup destroy code ..
- Tests: sync / remove FPS stderr print

38 files changed, 182 insertions, 327 deletions

diff --git a/src/newt/classes/com/jogamp/newt/Window.java b/src/newt/classes/com/jogamp/newt/Window.java
index b78f7a9e8..5b3d93eec 100644
--- a/src/newt/classes/com/jogamp/newt/Window.java
+++ b/src/newt/classes/com/jogamp/newt/Window.java
@@ -109,19 +109,12 @@ public interface Window extends NativeWindow, WindowClosingProtocol {
      * which will issue {@link Screen#destroy()} if the reference count becomes 0.<br>
      * This destruction sequence shall end up in {@link Display#destroy()}, if all reference counts become 0.
      * </p>
-     * @see #invalidate()
+     * @see #destroy()
      * @see #setVisible(boolean)
      */
     void destroy();
 
     /**
-     * Destroys the Window via {@link #destroy()} and clears all Object references,
-     * eg. all states, size, position, parent handles, list of child Windows and reference to it's Screen.<br>
-     * This Window cannot be recreated after calling this method anymore.<br>
-     */
-    void invalidate();
-
-    /**
      * <p>
      * <code>setVisible</code> makes the window and children visible if <code>visible</code> is true,
      * otherwise the window and children becomes invisible.<br></p>
diff --git a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
index bc0d67bfc..d8eda923a 100644
--- a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
+++ b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
@@ -341,28 +341,18 @@ public class GLWindow implements GLAutoDrawable, Window, NEWTEventConsumer, FPSC
             }
             context = null;
             drawable = null;
-
+            
+            GLAnimatorControl ctrl = GLWindow.this.getAnimator();
+            if ( null!=ctrl ) {
+                ctrl.remove(GLWindow.this);
+            }            
+            // helper=null; // pending events ..
+            
             if(Window.DEBUG_WINDOW_EVENT || Window.DEBUG_IMPLEMENTATION) {
                 System.err.println("GLWindow.destroy() "+Thread.currentThread()+", fin");
             }
         }
 
-        public synchronized void invalidate(boolean unrecoverable) {
-            if(Window.DEBUG_WINDOW_EVENT || Window.DEBUG_IMPLEMENTATION) {
-                String msg = "GLWindow.invalidate("+unrecoverable+") "+Thread.currentThread()+", start";
-                System.err.println(msg);
-                //Exception e1 = new Exception(msg);
-                //e1.printStackTrace();
-            }
-            if(unrecoverable) {
-                GLAnimatorControl ctrl = GLWindow.this.getAnimator();
-                if ( null!=ctrl ) {
-                    ctrl.remove(GLWindow.this);
-                }
-                helper=null;
-            }
-        }
-
         public synchronized void resetCounter() {
             if(Window.DEBUG_WINDOW_EVENT || Window.DEBUG_IMPLEMENTATION) {
                 System.err.println("GLWindow.resetCounter() "+Thread.currentThread());
@@ -407,19 +397,20 @@ public class GLWindow implements GLAutoDrawable, Window, NEWTEventConsumer, FPSC
             }
         }
         
+        private GLAnimatorControl savedAnimator = null;
+        
         public synchronized boolean pauseRenderingAction() {
             boolean animatorPaused = false;
-            GLAnimatorControl ctrl = GLWindow.this.getAnimator();
-            if ( null!=ctrl ) {
-                animatorPaused = ctrl.pause();
+            savedAnimator = GLWindow.this.getAnimator();
+            if ( null != savedAnimator ) {
+                animatorPaused = savedAnimator.pause();
             }
             return animatorPaused;
         }
 
         public synchronized void resumeRenderingAction() {
-            GLAnimatorControl ctrl = GLWindow.this.getAnimator();
-            if ( null!=ctrl && ctrl.isPaused() ) {
-                ctrl.resume();
+            if ( null != savedAnimator && savedAnimator.isPaused() ) {
+                savedAnimator.resume();
             }
         }
     }
@@ -849,10 +840,6 @@ public class GLWindow implements GLAutoDrawable, Window, NEWTEventConsumer, FPSC
         return window.surfaceSwap();
     }
 
-    public final void invalidate() {
-        window.invalidate();
-    }
-    
     public final long getWindowHandle() {
         return window.getWindowHandle();
 
@@ -917,7 +904,7 @@ public class GLWindow implements GLAutoDrawable, Window, NEWTEventConsumer, FPSC
         });
 
         glWindow.setVisible(true);
-        glWindow.invalidate();
+        glWindow.destroy();
     }
 
 }
diff --git a/src/newt/classes/jogamp/newt/DefaultEDTUtil.java b/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
index 3b14f30fc..847407683 100644
--- a/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
+++ b/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
@@ -135,7 +135,7 @@ public class DefaultEDTUtil implements EDTUtil {
                 if(stop) {
                     edt.shouldStop = true;
                     if(DEBUG) {
-                        String msg = Thread.currentThread()+": EDT signal STOP (on edt: "+isCurrentThreadEDT()+") - edt: "+edt;
+                        String msg = Thread.currentThread()+": EDT signal STOP (on edt: "+isCurrentThreadEDT()+") - tasks: "+edt.tasks.size()+" - "+edt;
                         System.err.println(msg);
                         // Throwable t = new Throwable(msg);
                         // t.printStackTrace();
diff --git a/src/newt/classes/jogamp/newt/WindowImpl.java b/src/newt/classes/jogamp/newt/WindowImpl.java
index cb1c0eda2..2286fdd00 100644
--- a/src/newt/classes/jogamp/newt/WindowImpl.java
+++ b/src/newt/classes/jogamp/newt/WindowImpl.java
@@ -75,16 +75,17 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
     
     private RecursiveLock windowLock = new RecursiveLock();  // Window instance wide lock
     private RecursiveLock surfaceLock = new RecursiveLock(); // Surface only lock
-    private long   windowHandle;
-    private ScreenImpl screen;
+    private long   windowHandle = 0;
+    private ScreenImpl screen = null;
     private boolean screenReferenceAdded = false;
-    private NativeWindow parentWindow;
-    private long parentWindowHandle;
-    protected AbstractGraphicsConfiguration config;
-    protected CapabilitiesImmutable capsRequested;
+    private NativeWindow parentWindow = null;
+    private long parentWindowHandle = 0;
+    protected AbstractGraphicsConfiguration config = null;
+    protected CapabilitiesImmutable capsRequested = null;
     protected CapabilitiesChooser capabilitiesChooser = null; // default null -> default
-    protected boolean fullscreen, visible, hasFocus;
-    protected int width, height, x, y;
+    protected boolean fullscreen = false, visible = false, hasFocus = false;    
+    protected int width = 128, height = 128, x = 0, y = 0; // default values
+        
     protected int nfs_width, nfs_height, nfs_x, nfs_y; // non fullscreen dimensions ..
     protected String title = "Newt Window";
     protected boolean undecorated = false;
@@ -99,37 +100,23 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
     private FocusRunnable focusAction = null;
 
     private Object surfaceUpdatedListenersLock = new Object();
-    private ArrayList surfaceUpdatedListeners;
+    private ArrayList surfaceUpdatedListeners = new ArrayList();
 
     private Object childWindowsLock = new Object();
-    private ArrayList childWindows;
+    private ArrayList childWindows = new ArrayList();
 
-    private ArrayList mouseListeners;
-    private int  mouseButtonPressed;  // current pressed mouse button number
-    private long lastMousePressed;    // last time when a mouse button was pressed
-    private int  lastMouseClickCount; // last mouse button click count
+    private ArrayList mouseListeners = new ArrayList();
+    private int  mouseButtonPressed = 0;  // current pressed mouse button number
+    private long lastMousePressed = 0;    // last time when a mouse button was pressed
+    private int  lastMouseClickCount = 0; // last mouse button click count
 
-    private ArrayList keyListeners;
+    private ArrayList keyListeners = new ArrayList();
 
-    private ArrayList windowListeners;
+    private ArrayList windowListeners  = new ArrayList();
     private boolean repaintQueued = false;
 
     ScreenModeListenerImpl screenModeListenerImpl = new ScreenModeListenerImpl();
 
-    private void initializeStates() {
-        invalidate(true);
-
-        childWindows = new ArrayList();
-        surfaceUpdatedListeners = new ArrayList();
-        windowListeners =  new ArrayList();
-        mouseListeners = new ArrayList();
-
-        mouseButtonPressed = 0; // current pressed mouse button number
-        lastMousePressed = 0; // last time when a mouse button was pressed
-        lastMouseClickCount = 0; // last mouse button click count
-        keyListeners = new ArrayList();
-    }
-
     // Workaround for initialization order problems on Mac OS X
     // between native Newt and (apparently) Fmod -- if Fmod is
     // initialized first then the connection to the window server
@@ -179,7 +166,6 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 windowClass = OffscreenWindow.class;
             }
             WindowImpl window = (WindowImpl) windowClass.newInstance();
-            window.initializeStates();
             window.parentWindow = parentWindow;
             window.parentWindowHandle = parentWindowHandle;
             window.screen = (ScreenImpl) screen;
@@ -204,7 +190,6 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 throw new NativeWindowException("WindowClass "+windowClass+" constructor mismatch at argument #"+argsChecked+"; Constructor: "+getTypeStrList(cstrArgumentTypes)+", arguments: "+getArgsStrList(cstrArguments));
             }
             WindowImpl window = (WindowImpl) ReflectionUtil.createInstance( windowClass, cstrArgumentTypes, cstrArguments ) ;
-            window.initializeStates();
             window.screen = (ScreenImpl) screen;
             window.capsRequested = (CapabilitiesImmutable) caps.cloneMutable();
             return window;
@@ -244,13 +229,6 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         void destroyActionInLock();
 
         /**
-         * Invoked after destruction from Window's invalidate method.<br>
-         * Called while window is locked.
-         * @param unrecoverable
-         */
-        void invalidate(boolean unrecoverable);
-
-        /**
          * Invoked for expensive modifications, ie while reparenting and ScreenMode change.<br>
          * No lock is hold when invoked.<br>
          *
@@ -310,26 +288,6 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         }
     }
 
-    private void closeAndInvalidate() {
-        windowLock.lock();
-        try {
-            if( null != screen ) {
-                if( 0 != windowHandle ) {
-                    screen.removeScreenModeListener(screenModeListenerImpl);
-                    closeNativeImpl();
-                    removeScreenReference();
-                }
-                Display dpy = screen.getDisplay();
-                if(null != dpy) {
-                    dpy.validateEDT();
-                }
-            }
-            invalidate(false);
-        } finally {
-            windowLock.unlock();
-        }
-    }
-
     private boolean validateParentWindowHandle() {
         if(null!=parentWindow) {
             parentWindowHandle = getNativeWindowHandle(parentWindow);
@@ -765,6 +723,10 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     return; // nop
                 }
 
+                if(DEBUG_IMPLEMENTATION || DEBUG_WINDOW_EVENT) {
+                    String msg = "!!! Window DestroyAction() "+getThreadName();
+                    System.err.println(msg);
+                }
                 // Childs first ..
                 synchronized(childWindowsLock) {
                   if(childWindows.size()>0) {
@@ -787,7 +749,17 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     lifecycleHook.destroyActionInLock();
                 }
 
-                closeAndInvalidate();
+                if( null != screen ) {
+                    if( 0 != windowHandle ) {
+                        screen.removeScreenModeListener(screenModeListenerImpl);
+                        closeNativeImpl();
+                        removeScreenReference();
+                    }
+                    Display dpy = screen.getDisplay();
+                    if(null != dpy) {
+                        dpy.validateEDT();
+                    }
+                }
 
                 // send synced destroyed notification
                 sendWindowEvent(WindowEvent.EVENT_WINDOW_DESTROYED);
@@ -800,7 +772,29 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
             }
             if(animatorPaused) {
                 lifecycleHook.resumeRenderingAction();
-            }            
+            }
+            windowHandle = 0;
+            visible = false;
+            fullscreen = false;
+            hasFocus = false;
+            parentWindowHandle = 0;
+            
+            // these refs shall be kept alive - resurrection 
+            /**
+            if(null!=parentWindow && parentWindow instanceof Window) {
+                ((Window)parentWindow).removeChild(WindowImpl.this);
+            }        
+            childWindows = null;
+            surfaceUpdatedListeners = null;
+            mouseListeners = null;
+            keyListeners = null;
+            capsRequested = null;
+            lifecycleHook = null;
+            
+            screen = null;           
+            windowListeners = null;
+            parentWindow = null;
+            */                        
         }
     }
 
@@ -816,84 +810,6 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         }
     }
 
-    public final void invalidate() {
-        destroy();
-        invalidate(true);
-    }
-
-    /**
-     * @param unrecoverable If true, all states, size, position, parent handles,
-     * reference to it's Screen are reset.
-     * Otherwise you can recreate the window, via <code>setVisible(true)</code>.
-     * @see #invalidate()
-     * @see #destroy()
-     * @see #destroy(boolean)
-     */
-    protected void invalidate(boolean unrecoverable) {
-        windowLock.lock();
-        try {
-            if(DEBUG_IMPLEMENTATION || DEBUG_WINDOW_EVENT) {
-                String msg = "!!! Window Invalidate(unrecoverable: "+unrecoverable+") "+getThreadName();
-                System.err.println(msg);
-                // Throwable t = new Throwable(msg);
-                // t.printStackTrace();
-            }
-
-            // Childs first ..
-            synchronized(childWindowsLock) {
-              // avoid ConcurrentModificationException: parent -> child -> parent.removeChild(this)
-              if(null!=childWindows && childWindows.size()>0) {
-                ArrayList clonedChildWindows = (ArrayList) childWindows.clone();
-                while( clonedChildWindows.size() > 0 ) {
-                  NativeWindow nw = (NativeWindow) clonedChildWindows.remove(0);
-                  if(nw instanceof WindowImpl) {
-                      ((WindowImpl)nw).invalidate(unrecoverable);
-                  }
-                }
-              }
-            }
-
-            if(null!=lifecycleHook) {
-                lifecycleHook.invalidate(unrecoverable);
-            }
-
-            windowHandle = 0;
-            visible = false;
-            fullscreen = false;
-            hasFocus = false;
-
-            if(unrecoverable) {
-                if(null!=parentWindow && parentWindow instanceof Window) {
-                    ((Window)parentWindow).removeChild(WindowImpl.this);
-                }
-                screen = null;
-
-                synchronized(childWindowsLock) {
-                    childWindows = null;
-                }
-                synchronized(surfaceUpdatedListenersLock) {
-                    surfaceUpdatedListeners = null;
-                }
-                windowListeners = null;
-                mouseListeners = null;
-                keyListeners = null;
-
-                parentWindowHandle = 0;
-                parentWindow = null;
-                capsRequested = null;
-                lifecycleHook = null;
-
-                // Default position and dimension will be re-set immediately by user
-                width  = 128;
-                height = 128;
-                x=0;
-                y=0;
-            }
-        } finally {
-            windowLock.unlock();
-        }
-    }
-
     private class ReparentActionImpl implements Runnable, ReparentAction {
         NativeWindow newParentWindow;
         boolean forceDestroyCreate;
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLProfile01NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLProfile01NEWT.java
index d4f24bb19..898337602 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLProfile01NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLProfile01NEWT.java
@@ -155,7 +155,7 @@ public class TestGLProfile01NEWT extends UITestCase {
 
         glWindow.display();
         Thread.sleep(100);
-        glWindow.invalidate();
+        glWindow.destroy();
     }
 
     public static void main(String args[]) throws IOException {
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListAWT.java
index 0793d113e..9f515c1b5 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListAWT.java
@@ -120,7 +120,7 @@ public class TestSharedContextListAWT extends UITestCase {
         GLCanvas glc2 = runTestGL(f2, animator, width, 0,      true);
         GLCanvas glc3 = runTestGL(f3, animator, 0,     height, false);
 
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
         while(animator.isAnimating() && animator.getTotalFPSDuration()<duration) {
             Thread.sleep(100);
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListNEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListNEWT.java
index 0662ed72e..f3a3cd04e 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListNEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestSharedContextListNEWT.java
@@ -108,7 +108,7 @@ public class TestSharedContextListNEWT extends UITestCase {
         GLWindow f1 = runTestGL(animator, 0, 0, true);
         GLWindow f2 = runTestGL(animator, width, 0, true);
         GLWindow f3 = runTestGL(animator, 0, height, false);
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
         while(animator.isAnimating() && animator.getTotalFPSDuration()<duration) {
             Thread.sleep(100);
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/RedSquare0.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/RedSquare0.java
index 3e08f0e82..ce927ddc7 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/RedSquare0.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/RedSquare0.java
@@ -58,16 +58,16 @@ public class RedSquare0 implements GLEventListener {
         myShader = GLSLSimpleProgram.create(gl, RedSquareShader.VERTEX_SHADER_TEXT, RedSquareShader.FRAGMENT_SHADER_TEXT, true);
         gl.glUseProgram(myShader.getShaderProgram());
         Assert.assertEquals(GL.GL_NO_ERROR, gl.glGetError());
-        // setup mgl_PMVMatrix
+        // setup gcu_PMVMatrix
         pmvMatrix = new PMVMatrix();
         pmvMatrix.glMatrixMode(PMVMatrix.GL_PROJECTION);
         pmvMatrix.glLoadIdentity();
         pmvMatrix.glMatrixMode(PMVMatrix.GL_MODELVIEW);
         pmvMatrix.glLoadIdentity();
-        mgl_PMVMatrix = gl.glGetUniformLocation(myShader.getShaderProgram(), "mgl_PMVMatrix");
+        mgl_PMVMatrix = gl.glGetUniformLocation(myShader.getShaderProgram(), "gcu_PMVMatrix");
         Assert.assertTrue(0 <= mgl_PMVMatrix);
         Assert.assertEquals(GL.GL_NO_ERROR, gl.glGetError());
-        pmvMatrixUniform = new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf());
+        pmvMatrixUniform = new GLUniformData("gcu_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf());
         pmvMatrixUniform.setLocation(mgl_PMVMatrix);
         gl.glUniform(pmvMatrixUniform);
         Assert.assertEquals(GL.GL_NO_ERROR, gl.glGetError());
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/shader/RedSquareShader.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/shader/RedSquareShader.java
index 3ef62df31..ca781f4ce 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/shader/RedSquareShader.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/shader/RedSquareShader.java
@@ -38,7 +38,7 @@ public class RedSquareShader {
                 "  #define HIGHP\n" +
                 "#endif\n" +
                 "\n" +
-                "uniform MEDIUMP mat4    mgl_PMVMatrix[2];\n" +
+                "uniform MEDIUMP mat4    gcu_PMVMatrix[2];\n" +
                 "attribute HIGHP vec4    mgl_Vertex;\n" +
                 "attribute HIGHP vec4    mgl_Color;\n" +
                 "varying   HIGHP vec4    frontColor;\n" +
@@ -46,7 +46,7 @@ public class RedSquareShader {
                 "void main(void)\n" +
                 "{\n" +
                 "  frontColor=mgl_Color;\n" +
-                "  gl_Position = mgl_PMVMatrix[0] * mgl_PMVMatrix[1] * mgl_Vertex;\n" +
+                "  gl_Position = gcu_PMVMatrix[0] * gcu_PMVMatrix[1] * mgl_Vertex;\n" +
                 "}\n" ;
 
     public static String FRAGMENT_SHADER_TEXT =
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsAWT.java
index 77a19cb17..8b050374a 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsAWT.java
@@ -81,7 +81,7 @@ public class TestGearsAWT extends UITestCase {
         new AWTWindowAdapter(new TraceWindowAdapter(quitAdapter)).addTo(frame);
 
         frame.setVisible(true);
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
 
         while(!quitAdapter.shouldQuit() && animator.isAnimating() && animator.getTotalFPSDuration()<duration) {
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWT.java
index 6965fc4c0..148181cd9 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWT.java
@@ -84,7 +84,7 @@ public class TestGearsGLJPanelAWT extends UITestCase {
                     _frame.setVisible(true);
                 } } ) ;
 
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
         Assert.assertEquals(true, animator.isAnimating());
 
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWTBug450.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWTBug450.java
index 3abb27289..e8da62b50 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWTBug450.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/TestGearsGLJPanelAWTBug450.java
@@ -114,7 +114,7 @@ public class TestGearsGLJPanelAWTBug450 extends UITestCase {
                     _frame.setVisible(true);
                 } } ) ;
 
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
         Assert.assertEquals(true, animator.isAnimating());
 
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNEWT.java
index 536f5ef39..90c209e9b 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNEWT.java
@@ -100,7 +100,7 @@ public class TestGearsNEWT extends UITestCase {
 
         glWindow.setSize(width, height);
         glWindow.setVisible(true);
-        animator.setUpdateFPSFrames(1, System.err);
+        animator.setUpdateFPSFrames(1, null);
         animator.start();
 
         while(!quitAdapter.shouldQuit() && animator.isAnimating() && animator.getTotalFPSDuration()<duration) {
@@ -108,7 +108,7 @@ public class TestGearsNEWT extends UITestCase {
         }
 
         animator.stop();
-        glWindow.invalidate();
+        glWindow.destroy();
     }
 
     @Test
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNewtAWTWrapper.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNewtAWTWrapper.java
index 03a2f0f6a..4fe946b88 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNewtAWTWrapper.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl2/gears/newt/TestGearsNewtAWTWrapper.java
@@ -81,7 +81,7 @@ public class TestGearsNewtAWTWrapper extends UITestCase {
 
         glWindow.setSize(width, height);
         glWindow.setVisible(true);
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
 
         while(!quitAdapter.shouldQuit() && animator.isAnimating() && animator.getTotalFPSDuration()<duration) {
@@ -89,7 +89,7 @@ public class TestGearsNewtAWTWrapper extends UITestCase {
         }
 
         animator.stop();
-        glWindow.invalidate();
+        glWindow.destroy();
     }
 
     @Test
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/drawable/TestDrawable01NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/drawable/TestDrawable01NEWT.java
index 8897dc6fe..5568b42f7 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/drawable/TestDrawable01NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/drawable/TestDrawable01NEWT.java
@@ -145,7 +145,7 @@ public class TestDrawable01NEWT extends UITestCase {
 
         // GLWindow.destroy(..) sequence cont..
         Assert.assertNotNull(window);
-        window.invalidate();
+        window.destroy();
 
         drawable = null;
         context = null;
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/glsl/TestShaderCompilationBug459AWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/glsl/TestShaderCompilationBug459AWT.java
index 1bbf37159..e3d275845 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/glsl/TestShaderCompilationBug459AWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/glsl/TestShaderCompilationBug459AWT.java
@@ -136,7 +136,7 @@ public class TestShaderCompilationBug459AWT extends UITestCase {
 
         Animator animator = new Animator(glCanvas);
         frame.setVisible(true);
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
 
         while(animator.isAnimating() && animator.getTotalFPSDuration()<duration) {
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/newt/TestSwingAWTRobotUsageBeforeJOGLInitBug411.java b/src/test/com/jogamp/opengl/test/junit/jogl/newt/TestSwingAWTRobotUsageBeforeJOGLInitBug411.java
index 21a97363c..aed101ae5 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/newt/TestSwingAWTRobotUsageBeforeJOGLInitBug411.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/newt/TestSwingAWTRobotUsageBeforeJOGLInitBug411.java
@@ -68,7 +68,7 @@ import org.junit.AfterClass;
 import org.junit.Test;
 
 public class TestSwingAWTRobotUsageBeforeJOGLInitBug411 extends UITestCase {
-    static long durationPerTest = 500; // ms
+    static long durationPerTest = 150; // ms
     static Robot robot;
     static Border border;
     static JFrame frame;
@@ -265,13 +265,12 @@ public class TestSwingAWTRobotUsageBeforeJOGLInitBug411 extends UITestCase {
         runTestGL(newtCanvasAWT, win1);
 
         win0.destroy();
-        Assert.assertEquals(true, anim.isAnimating());
-
-        newtCanvasAWT.destroy();
+        Assert.assertEquals(false, win0.isNativeValid());        
+        Assert.assertEquals(true, anim.isAnimating()); // due to newtCanvasAWT/win1
 
-        win0.invalidate();
-        Assert.assertEquals(true, anim.isAnimating());
-        win1.invalidate();
+        newtCanvasAWT.destroy(); // destroys both newtCanvasAWT/win1
+        Assert.assertEquals(false, win0.isNativeValid());
+        Assert.assertEquals(false, win1.isNativeValid());
         Assert.assertEquals(false, anim.isAnimating());
 
         anim.stop();
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle01NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle01NEWT.java
index 8905a7637..8e8e50899 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle01NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle01NEWT.java
@@ -83,7 +83,7 @@ public class TestDisplayLifecycle01NEWT extends UITestCase {
         } else {
             glWindow = GLWindow.create(caps);
         }
-        glWindow.setUpdateFPSFrames(1, System.err);
+        glWindow.setUpdateFPSFrames(1, null);
 
         GLEventListener demo = new Gears();
         setDemoFields(demo, glWindow);
@@ -114,7 +114,6 @@ public class TestDisplayLifecycle01NEWT extends UITestCase {
         Assert.assertEquals(false,screen.isNativeValid());
 
         Assert.assertNotNull(window.getScreen());
-        Assert.assertEquals(true,window.isValid());
         Assert.assertEquals(false,window.isNativeValid());
         Assert.assertEquals(false,window.isVisible());
 
@@ -170,7 +169,6 @@ public class TestDisplayLifecycle01NEWT extends UITestCase {
         Assert.assertEquals(false,display.getEDTUtil().isRunning());
         Assert.assertEquals(0,screen.getReferenceCount());
         Assert.assertEquals(false,screen.isNativeValid());
-        Assert.assertEquals(true, window.isValid());
         Assert.assertEquals(false,window.isNativeValid());
         Assert.assertEquals(false,window.isVisible());
         window.resetFPSCounter();
@@ -217,7 +215,6 @@ public class TestDisplayLifecycle01NEWT extends UITestCase {
         Assert.assertEquals(false,screen.isNativeValid());
 
         Assert.assertNotNull(window.getScreen());
-        Assert.assertEquals(true,window.isValid());
         Assert.assertEquals(false,window.isNativeValid());
         Assert.assertEquals(false,window.isVisible());
     }
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle02NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle02NEWT.java
index bd8ece22d..39f00100a 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle02NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestDisplayLifecycle02NEWT.java
@@ -76,7 +76,7 @@ public class TestDisplayLifecycle02NEWT extends UITestCase {
         // Create native windowing resources .. X11/Win/OSX
         // 
         GLWindow glWindow = GLWindow.create(caps);
-        glWindow.setUpdateFPSFrames(1, System.err);
+        glWindow.setUpdateFPSFrames(1, null);
 
         GLEventListener demo = new Gears();
         setDemoFields(demo, glWindow);
@@ -161,7 +161,6 @@ public class TestDisplayLifecycle02NEWT extends UITestCase {
         Assert.assertEquals(0,screen.getReferenceCount());
         Assert.assertEquals(false,screen.isNativeValid());
         Assert.assertNotNull(window.getScreen());
-        Assert.assertEquals(true,window.isValid());
         Assert.assertEquals(false,window.isNativeValid());
         Assert.assertEquals(false,window.isVisible());
 
@@ -180,7 +179,6 @@ public class TestDisplayLifecycle02NEWT extends UITestCase {
         Assert.assertEquals(screen,window.getScreen());
         Assert.assertEquals(1,Display.getActiveDisplayNumber());
         Assert.assertEquals(1,display.getReferenceCount());
-        Assert.assertEquals(true,window.isValid());
         Assert.assertEquals(true,display.isNativeValid());
         Assert.assertEquals(true,display.getEDTUtil().isRunning());
         Assert.assertEquals(1,Screen.getActiveScreenNumber());
@@ -197,10 +195,8 @@ public class TestDisplayLifecycle02NEWT extends UITestCase {
         }
         System.err.println("duration: "+window.getTotalFPSDuration());
 
-        // destruction + invalidate, ie Display/Screen will be unreferenced
-        window.invalidate();
-        Assert.assertNull(window.getScreen());
-        Assert.assertEquals(false,window.isValid());
+        window.destroy();
+        Assert.assertEquals(screen,window.getScreen());
         Assert.assertEquals(false,window.isNativeValid());
         Assert.assertEquals(false,window.isVisible());
 
@@ -300,7 +296,6 @@ public class TestDisplayLifecycle02NEWT extends UITestCase {
         // destruction ...
         window1.destroy();
         Assert.assertNotNull(window1.getScreen());
-        Assert.assertEquals(true,window1.isValid());
         Assert.assertEquals(false,window1.isNativeValid());
         Assert.assertEquals(false,window1.isVisible());
 
@@ -316,7 +311,6 @@ public class TestDisplayLifecycle02NEWT extends UITestCase {
         // destruction
         window2.destroy();
         Assert.assertNotNull(window2.getScreen());
-        Assert.assertEquals(true,window2.isValid());
         Assert.assertEquals(false,window2.isNativeValid());
         Assert.assertEquals(false,window2.isVisible());
 
@@ -331,16 +325,12 @@ public class TestDisplayLifecycle02NEWT extends UITestCase {
         Assert.assertEquals(false,screen.isNativeValid());
 
         // invalidate .. remove all refs
-        window1.invalidate();
-        Assert.assertNull(window1.getScreen());
-        Assert.assertEquals(false,window1.isValid());
+        window1.destroy();
         Assert.assertEquals(false,window1.isNativeValid());
         Assert.assertEquals(false,window1.isVisible());
 
         // invalidate .. remove all refs
-        window2.invalidate();
-        Assert.assertNull(window2.getScreen());
-        Assert.assertEquals(false,window2.isValid());
+        window2.destroy();
         Assert.assertEquals(false,window2.isNativeValid());
         Assert.assertEquals(false,window2.isVisible());
 
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestEventSourceNotAWTBug.java b/src/test/com/jogamp/opengl/test/junit/newt/TestEventSourceNotAWTBug.java
index 67dd2a33c..ff0da663c 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestEventSourceNotAWTBug.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestEventSourceNotAWTBug.java
@@ -88,7 +88,7 @@ public class TestEventSourceNotAWTBug extends UITestCase {
                 f_jf.dispose();
             }
         });
-        glWindow.invalidate();
+        glWindow.destroy();
     }
 
     public static void main(String args[]) throws IOException {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestFocus01SwingAWTRobot.java b/src/test/com/jogamp/opengl/test/junit/newt/TestFocus01SwingAWTRobot.java
index 31170d32d..8be7d1c85 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestFocus01SwingAWTRobot.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestFocus01SwingAWTRobot.java
@@ -175,7 +175,7 @@ public class TestFocus01SwingAWTRobot extends UITestCase {
         // Shutdown the test.
         animator.stop();
         frame1.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     static int atoi(String a) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestFocus02SwingAWTRobot.java b/src/test/com/jogamp/opengl/test/junit/newt/TestFocus02SwingAWTRobot.java
index 8242ebb32..996ce9ca8 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestFocus02SwingAWTRobot.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestFocus02SwingAWTRobot.java
@@ -261,7 +261,7 @@ public class TestFocus02SwingAWTRobot extends UITestCase {
                     _jFrame1.dispose();
                 } });
 
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     @Test
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows00NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows00NEWT.java
index 661cdc517..9864ae164 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows00NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows00NEWT.java
@@ -71,7 +71,7 @@ public class TestGLWindows00NEWT extends UITestCase {
             glWindow = GLWindow.create(caps);
             Assert.assertNotNull(glWindow);
         }
-        glWindow.setUpdateFPSFrames(1, System.err);        
+        glWindow.setUpdateFPSFrames(1, null);        
 
         GLEventListener demo = new Gears();
         glWindow.addGLEventListener(demo);
@@ -86,9 +86,8 @@ public class TestGLWindows00NEWT extends UITestCase {
 
     static void destroyWindow(GLWindow glWindow) {
         if(null!=glWindow) {
-            glWindow.invalidate();
+            glWindow.destroy();
             Assert.assertEquals(false,glWindow.isNativeValid());
-            Assert.assertEquals(false,glWindow.isValid());
         }
     }
 
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows01NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows01NEWT.java
index 2d0007ecb..0b6c754ed 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows01NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows01NEWT.java
@@ -119,9 +119,8 @@ public class TestGLWindows01NEWT extends UITestCase {
 
     static void destroyWindow(GLWindow glWindow) {
         if(null!=glWindow) {
-            glWindow.invalidate();
+            glWindow.destroy();
             Assert.assertEquals(false,glWindow.isNativeValid());
-            Assert.assertEquals(false,glWindow.isValid());
         }
     }
 
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows02NEWTAnimated.java b/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows02NEWTAnimated.java
index 6cf1b2223..21ef2da06 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows02NEWTAnimated.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestGLWindows02NEWTAnimated.java
@@ -74,7 +74,7 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         } else {
             glWindow = GLWindow.create(caps);
         }
-        glWindow.setUpdateFPSFrames(1, System.err);        
+        glWindow.setUpdateFPSFrames(1, null);        
         Assert.assertNotNull(glWindow);
         glWindow.setUndecorated(onscreen && undecorated);
 
@@ -119,13 +119,15 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         Assert.assertNotNull(caps);
         GLWindow window = createWindow(null, caps, width, height, true /* onscreen */, false /* undecorated */);
         Animator animator = new Animator(window);
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         Assert.assertTrue(animator.start());
         while(animator.isAnimating() && animator.getTotalFPSDuration()<durationPerTest) {
             Thread.sleep(100);
         }
         destroyWindow(window);
-        Assert.assertEquals(true, animator.isAnimating());
+        Assert.assertEquals(false, animator.isAnimating());
+        Assert.assertEquals(false, animator.isPaused());
+        Assert.assertEquals(true, animator.isStarted());
         Assert.assertTrue(animator.stop());
     }
 
@@ -135,14 +137,16 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         Assert.assertNotNull(caps);
         GLWindow window = createWindow(null, caps, width, height, true /* onscreen */, false /* undecorated */);
         Animator animator = new Animator(window);
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         Assert.assertTrue(animator.start());
         while(animator.isAnimating() && animator.getTotalFPSDuration()<durationPerTest) {
             Thread.sleep(100);
         }
         destroyWindow(window);
         destroyWindow(window);
-        Assert.assertEquals(true, animator.isAnimating());
+        Assert.assertEquals(false, animator.isAnimating());
+        Assert.assertEquals(false, animator.isPaused());
+        Assert.assertEquals(true, animator.isStarted());
         Assert.assertTrue(animator.stop());
     }
 
@@ -165,7 +169,7 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         window2.setPosition(screen.getWidth()-width, 0);
 
         Animator animator = new Animator();
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         Assert.assertEquals(false, animator.isStarted());
         Assert.assertEquals(false, animator.isAnimating());
         Assert.assertEquals(false, animator.isPaused());
@@ -188,7 +192,7 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         while(animator.isAnimating() && animator.getTotalFPSDuration()<durationPerTest) {
             Thread.sleep(100);
         }
-        window1.invalidate();
+        window1.destroy();
         Assert.assertEquals(true, animator.isStarted());
         Assert.assertEquals(true, animator.isAnimating());
         Assert.assertEquals(false, animator.isPaused());
@@ -196,7 +200,7 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         while(animator.isAnimating() && animator.getTotalFPSDuration()<2*durationPerTest) {
             Thread.sleep(100);
         }
-        window2.invalidate();
+        window2.destroy();
         Assert.assertEquals(true, animator.isStarted());
         Assert.assertEquals(false, animator.isAnimating());
         Assert.assertEquals(false, animator.isPaused());
@@ -227,7 +231,7 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         window2.setPosition(screen2.getWidth()-width, 0);
 
         Animator animator = new Animator();
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         Assert.assertEquals(false, animator.isStarted());
         Assert.assertEquals(false, animator.isAnimating());
         Assert.assertEquals(false, animator.isPaused());
@@ -260,17 +264,17 @@ public class TestGLWindows02NEWTAnimated extends UITestCase {
         }
         destroyWindow(window2);
         Assert.assertEquals(true, animator.isStarted());
-        Assert.assertEquals(true, animator.isAnimating());
+        Assert.assertEquals(false, animator.isAnimating());
         Assert.assertEquals(false, animator.isPaused());
 
         Assert.assertEquals(true, animator.pause());
-        Assert.assertEquals(true, animator.isStarted());
+        Assert.assertEquals(true, animator.isStarted());                
         Assert.assertEquals(false, animator.isAnimating());
         Assert.assertEquals(true, animator.isPaused());
 
         Assert.assertEquals(true, animator.resume());
         Assert.assertEquals(true, animator.isStarted());
-        Assert.assertEquals(true, animator.isAnimating());
+        Assert.assertEquals(false, animator.isAnimating());
         Assert.assertEquals(false, animator.isPaused());
 
         Assert.assertTrue(animator.stop());
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestListenerCom01AWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestListenerCom01AWT.java
index 3eac407d2..1b65c8910 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestListenerCom01AWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestListenerCom01AWT.java
@@ -109,7 +109,7 @@ public class TestListenerCom01AWT extends UITestCase {
         frame.setVisible(true);
 
         Animator animator1 = new Animator(glWindow);
-        animator1.setUpdateFPSFrames(1, System.err);        
+        animator1.setUpdateFPSFrames(1, null);        
         animator1.start();
         while(animator1.isAnimating() && animator1.getTotalFPSDuration()<durationPerTest) {
             Thread.sleep(100);
@@ -120,7 +120,7 @@ public class TestListenerCom01AWT extends UITestCase {
         Assert.assertEquals(false, animator1.isAnimating());
 
         frame.dispose();
-        glWindow.invalidate();
+        glWindow.destroy();
     }
 
     public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestRemoteGLWindows01NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestRemoteGLWindows01NEWT.java
index da4a0b2d4..579355900 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestRemoteGLWindows01NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestRemoteGLWindows01NEWT.java
@@ -89,9 +89,8 @@ public class TestRemoteGLWindows01NEWT extends UITestCase {
 
     static void destroyWindow(GLWindow glWindow) {
         if(null!=glWindow) {
-            glWindow.invalidate();
+            glWindow.destroy();
             Assert.assertEquals(false,glWindow.isNativeValid());
-            Assert.assertEquals(false,glWindow.isValid());
         }
     }
 
@@ -137,7 +136,7 @@ public class TestRemoteGLWindows01NEWT extends UITestCase {
         Assert.assertEquals(true,window2.isVisible());
 
         animator.add(window2);
-        animator.setUpdateFPSFrames(1, System.err);        
+        animator.setUpdateFPSFrames(1, null);        
         animator.start();
 
         while(animator.getTotalFPSDuration()<durationPerTest) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestScreenMode00NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestScreenMode00NEWT.java
index d16330ecc..810539c90 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestScreenMode00NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestScreenMode00NEWT.java
@@ -120,7 +120,7 @@ public class TestScreenMode00NEWT extends UITestCase {
             System.err.println("Your platform has no ScreenMode change support, sorry");
         }
 
-        window.invalidate();
+        window.destroy();
 
         Assert.assertEquals(false,window.isVisible());
         Assert.assertEquals(false,window.isNativeValid());
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol02NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol02NEWT.java
index 8f5baece9..fb19f6d50 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol02NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol02NEWT.java
@@ -70,7 +70,6 @@ public class TestWindowClosingProtocol02NEWT extends UITestCase {
         Assert.assertEquals(WindowClosingProtocol.DO_NOTHING_ON_CLOSE, op);
 
         Assert.assertEquals(true, AWTRobotUtil.closeWindow(glWindow, false)); // nop
-        Assert.assertEquals(true, glWindow.isValid());
         Assert.assertEquals(true, glWindow.isNativeValid());
         Assert.assertEquals(true, windowClosingListener.isWindowClosing());
         windowClosingListener.reset();
@@ -83,7 +82,6 @@ public class TestWindowClosingProtocol02NEWT extends UITestCase {
         Assert.assertEquals(WindowClosingProtocol.DISPOSE_ON_CLOSE, op);
 
         Assert.assertEquals(true,  AWTRobotUtil.closeWindow(glWindow, true));
-        Assert.assertEquals(true,  glWindow.isValid());
         Assert.assertEquals(false, glWindow.isNativeValid());
         Assert.assertEquals(true,  windowClosingListener.isWindowClosing());
     }
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol03NewtAWT.java b/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol03NewtAWT.java
index a10730680..2fc84cd91 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol03NewtAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/TestWindowClosingProtocol03NewtAWT.java
@@ -79,7 +79,6 @@ public class TestWindowClosingProtocol03NewtAWT extends UITestCase {
         Assert.assertEquals(true,  frame.isDisplayable());
         Assert.assertEquals(true,  newtCanvas.isValid());
         Assert.assertEquals(true,  newtCanvas.isDisplayable());
-        Assert.assertEquals(true,  glWindow.isValid());
         Assert.assertEquals(true,  glWindow.isNativeValid());
         Assert.assertEquals(true,  windowClosingListener.isWindowClosing());
         windowClosingListener.reset();
@@ -102,7 +101,6 @@ public class TestWindowClosingProtocol03NewtAWT extends UITestCase {
         Assert.assertEquals(false, frame.isDisplayable());
         Assert.assertEquals(false, newtCanvas.isValid());
         Assert.assertEquals(false, newtCanvas.isDisplayable());
-        Assert.assertEquals(true,  glWindow.isValid());
         Assert.assertEquals(false, glWindow.isNativeValid());
         Assert.assertEquals(true,  windowClosingListener.isWindowClosing());
     }
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01NEWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01NEWT.java
index 2f97e1318..f4aa44354 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01NEWT.java
@@ -150,13 +150,13 @@ public class TestParenting01NEWT extends UITestCase {
         glWindow1.resetFPSCounter();
         glWindow2.resetFPSCounter();
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);        
+        animator1.setUpdateFPSFrames(1, null);        
         animator1.start();
         Assert.assertEquals(true, animator1.isAnimating());
         Assert.assertEquals(false, animator1.isPaused());
         Assert.assertNotNull(animator1.getThread());
         Animator animator2 = new Animator(glWindow2);
-        animator2.setUpdateFPSFrames(1, System.err);        
+        animator2.setUpdateFPSFrames(1, null);        
         animator2.start();
         Assert.assertEquals(true, animator2.isAnimating());
         Assert.assertEquals(false, animator2.isPaused());
@@ -212,10 +212,8 @@ public class TestParenting01NEWT extends UITestCase {
         glWindow2.destroy(); // can be recreated, refs are hold
         Assert.assertEquals(true,  glWindow1.isVisible());
         Assert.assertEquals(true,  glWindow1.isNativeValid());
-        Assert.assertEquals(true,  glWindow1.isValid());
         Assert.assertEquals(false, glWindow2.isVisible());
         Assert.assertEquals(false, glWindow2.isNativeValid());
-        Assert.assertEquals(true,  glWindow2.isValid());
 
         Assert.assertEquals(1,display.getReferenceCount());
         Assert.assertEquals(true,display.isNativeValid());
@@ -228,10 +226,8 @@ public class TestParenting01NEWT extends UITestCase {
         glWindow1.destroy(); // can be recreated, refs are hold
         Assert.assertEquals(false, glWindow1.isVisible());
         Assert.assertEquals(false, glWindow1.isNativeValid());
-        Assert.assertEquals(true,  glWindow1.isValid());
         Assert.assertEquals(false, glWindow2.isVisible());
         Assert.assertEquals(false, glWindow2.isNativeValid());
-        Assert.assertEquals(true,  glWindow2.isValid());
 
         Assert.assertEquals(0,display.getReferenceCount());
         Assert.assertEquals(false,display.isNativeValid());
@@ -266,9 +262,7 @@ public class TestParenting01NEWT extends UITestCase {
 
         // chain glwindow1 -> glwindow2 ; can be recreated ..
         glWindow1.destroy();
-        Assert.assertEquals(true, glWindow1.isValid());
         Assert.assertEquals(false, glWindow1.isNativeValid());
-        Assert.assertEquals(true, glWindow2.isValid());
         Assert.assertEquals(false, glWindow2.isNativeValid());
         Assert.assertEquals(0,display.getReferenceCount());
         Assert.assertEquals(false,display.isNativeValid());
@@ -278,13 +272,8 @@ public class TestParenting01NEWT extends UITestCase {
         Assert.assertEquals(false,screen.isNativeValid());
         Assert.assertEquals(0,Display.getActiveDisplayNumber());
 
-        glWindow1.invalidate();
-        Assert.assertEquals(false, glWindow1.isValid());
-        Assert.assertEquals(false, glWindow2.isValid());
-
         // test double destroy/invalidate ..
-        glWindow2.invalidate();
-        Assert.assertEquals(false, glWindow2.isValid());
+        glWindow2.destroy();
 
         Assert.assertEquals(0,display.getReferenceCount());
         Assert.assertEquals(false,display.isNativeValid());
@@ -374,10 +363,10 @@ public class TestParenting01NEWT extends UITestCase {
         Assert.assertTrue(0 < glWindow1.getTotalFPSFrames());
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);
+        animator1.setUpdateFPSFrames(1, null);
         animator1.start();
         Animator animator2 = new Animator(glWindow2);
-        animator2.setUpdateFPSFrames(1, System.err);
+        animator2.setUpdateFPSFrames(1, null);
         animator2.start();
 
         int state = 0;
@@ -460,10 +449,8 @@ public class TestParenting01NEWT extends UITestCase {
 
         // destroy glWindow2
         glWindow2.destroy();
-        Assert.assertEquals(true,  glWindow1.isValid());
         Assert.assertEquals(true,  glWindow1.isNativeValid());
         Assert.assertEquals(true,  glWindow1.isVisible());
-        Assert.assertEquals(true,  glWindow2.isValid());
         Assert.assertEquals(false, glWindow2.isNativeValid());
         Assert.assertEquals(false, glWindow2.isVisible());
 
@@ -478,10 +465,8 @@ public class TestParenting01NEWT extends UITestCase {
 
         // destroy glWindow1
         glWindow1.destroy();
-        Assert.assertEquals(true,  glWindow1.isValid());
         Assert.assertEquals(false, glWindow1.isNativeValid());
         Assert.assertEquals(false, glWindow1.isVisible());
-        Assert.assertEquals(true,  glWindow2.isValid());
         Assert.assertEquals(false, glWindow2.isNativeValid());
         Assert.assertEquals(false, glWindow2.isVisible());
 
@@ -493,13 +478,6 @@ public class TestParenting01NEWT extends UITestCase {
         Assert.assertEquals(false,screen1.isNativeValid());
 
         Assert.assertEquals(0,Display.getActiveDisplayNumber());
-
-        glWindow1.invalidate();
-        Assert.assertEquals(false, glWindow1.isValid());
-        Assert.assertEquals(true,  glWindow2.isValid());
-
-        glWindow2.invalidate();
-        Assert.assertEquals(false, glWindow2.isValid());
     }
 
     @Test
@@ -573,10 +551,10 @@ public class TestParenting01NEWT extends UITestCase {
         Assert.assertEquals(1,Display.getActiveDisplayNumber());
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);
+        animator1.setUpdateFPSFrames(1, null);
         animator1.start();
         Animator animator2 = new Animator(glWindow2);
-        animator2.setUpdateFPSFrames(1, System.err);
+        animator2.setUpdateFPSFrames(1, null);
         animator2.start();
 
         int state = 0;
@@ -638,10 +616,8 @@ public class TestParenting01NEWT extends UITestCase {
         Assert.assertEquals(1,Display.getActiveDisplayNumber());
 
         glWindow1.destroy(); // should destroy both windows, actually, since glWindow2 is a child
-        Assert.assertEquals(true,  glWindow1.isValid());
         Assert.assertEquals(false, glWindow1.isNativeValid());
         Assert.assertEquals(false, glWindow1.isVisible());
-        Assert.assertEquals(true,  glWindow2.isValid());
         Assert.assertEquals(false, glWindow2.isNativeValid());
         Assert.assertEquals(false, glWindow2.isVisible());
 
@@ -665,9 +641,9 @@ public class TestParenting01NEWT extends UITestCase {
         Assert.assertEquals(false, glWindow1.isNativeValid());
         Assert.assertEquals(false, glWindow2.isNativeValid());
 
-        glWindow1.invalidate(); // parent -> child
-        Assert.assertEquals(false, glWindow1.isValid());
-        Assert.assertEquals(false, glWindow2.isValid());
+        glWindow1.destroy(); // parent -> child
+        Assert.assertEquals(false, glWindow1.isNativeValid());
+        Assert.assertEquals(false, glWindow2.isNativeValid());
 
         Assert.assertEquals(0,Display.getActiveDisplayNumber());
     }
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01aAWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01aAWT.java
index b737cf709..50461bba0 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01aAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01aAWT.java
@@ -123,7 +123,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(newtCanvasAWT.getNativeWindow(),glWindow1.getParent());
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);        
+        animator1.setUpdateFPSFrames(1, null);        
         animator1.start();
         while(animator1.isAnimating() && animator1.getTotalFPSDuration()<durationPerTest) {
             Thread.sleep(100);
@@ -132,20 +132,20 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(false, animator1.isAnimating());
 
         frame1.setVisible(false);
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         frame1.setVisible(true);
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         frame1.remove(newtCanvasAWT);
         // Assert.assertNull(glWindow1.getParent());
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         frame1.dispose();
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
-        glWindow1.invalidate();
-        //Assert.assertEquals(false, glWindow1.isValid());
+        glWindow1.destroy();
+        Assert.assertEquals(false, glWindow1.isNativeValid());
     }
 
     @Test
@@ -181,7 +181,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(newtCanvasAWT.getNativeWindow(),glWindow1.getParent());
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);
+        animator1.setUpdateFPSFrames(1, null);
         animator1.start();
         while(animator1.isAnimating() && animator1.getTotalFPSDuration()<durationPerTest) {
             Thread.sleep(100);
@@ -190,7 +190,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(false, animator1.isAnimating());
 
         frame.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     @Test
@@ -217,7 +217,7 @@ public class TestParenting01aAWT extends UITestCase {
         frame.add(newtCanvasAWT);
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);
+        animator1.setUpdateFPSFrames(1, null);
         animator1.start();
         Assert.assertEquals(true, animator1.isStarted());
         Assert.assertEquals(true, animator1.isAnimating());
@@ -228,7 +228,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(true, animator1.isAnimating()); // !!!
 
         frame.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     @Test
@@ -254,7 +254,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(newtCanvasAWT.getNativeWindow(),glWindow1.getParent());
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);        
+        animator1.setUpdateFPSFrames(1, null);        
         animator1.start();
 
         int state = 0;
@@ -279,7 +279,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(false, animator1.isAnimating());
 
         frame.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     @Test
@@ -310,7 +310,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(newtCanvasAWT.getNativeWindow(),glWindow1.getParent());
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);        
+        animator1.setUpdateFPSFrames(1, null);        
         animator1.start();
 
         int state = 0;
@@ -335,7 +335,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(false, animator1.isAnimating());
 
         frame.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     @Test
@@ -377,7 +377,7 @@ public class TestParenting01aAWT extends UITestCase {
         Assert.assertEquals(newtCanvasAWT.getNativeWindow(),glWindow1.getParent());
 
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);        
+        animator1.setUpdateFPSFrames(1, null);        
         animator1.start();
 
         int state = 0;
@@ -401,7 +401,7 @@ public class TestParenting01aAWT extends UITestCase {
 
         frame1.dispose();
         frame2.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01bAWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01bAWT.java
index 2b8d34423..84edfc8ba 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01bAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01bAWT.java
@@ -156,7 +156,7 @@ public class TestParenting01bAWT extends UITestCase {
 
         frame1.dispose();
         frame2.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cAWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cAWT.java
index 7321c6ba2..905d80925 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cAWT.java
@@ -125,20 +125,20 @@ public class TestParenting01cAWT extends UITestCase {
         }
 
         frame1.setVisible(false);
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         frame1.setVisible(true);
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         frame1.remove(newtCanvasAWT);
         // Assert.assertNull(glWindow1.getParent());
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         frame1.dispose();
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
-        glWindow1.invalidate();
-        //Assert.assertEquals(false, glWindow1.isValid());
+        glWindow1.destroy();
+        Assert.assertEquals(false, glWindow1.isNativeValid());
     }
 
     @Test
@@ -196,7 +196,7 @@ public class TestParenting01cAWT extends UITestCase {
 
         frame1.dispose();
         frame2.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cSwingAWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cSwingAWT.java
index f44f8a7f9..d7f3192bb 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cSwingAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01cSwingAWT.java
@@ -83,7 +83,7 @@ public class TestParenting01cSwingAWT extends UITestCase {
         setDemoFields(demo1, glWindow1, false);
         glWindow1.addGLEventListener(demo1);
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);
+        animator1.setUpdateFPSFrames(1, null);
         animator1.start();
         
         final GLWindow _glWindow1 = glWindow1;
@@ -152,14 +152,14 @@ public class TestParenting01cSwingAWT extends UITestCase {
             System.out.println("Demos: 3 - !Visible");
                     _jFrame1.setVisible(false);
                 } });
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         SwingUtilities.invokeAndWait(new Runnable() {
                 public void run() {
             System.out.println("Demos: 4 - Visible");
                     _jFrame1.setVisible(true);
                 } });
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         SwingUtilities.invokeAndWait(new Runnable() {
                 public void run() {
@@ -167,16 +167,16 @@ public class TestParenting01cSwingAWT extends UITestCase {
                     _jPanel1.remove(_container1);
                 } });
         // Assert.assertNull(glWindow1.getParent());
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         SwingUtilities.invokeAndWait(new Runnable() {
                 public void run() {
                     _jFrame1.dispose();
                 } });
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
-        glWindow1.invalidate();
-        //Assert.assertEquals(false, glWindow1.isValid());
+        glWindow1.destroy();
+        Assert.assertEquals(false, glWindow1.isNativeValid());
     }
 
     @Test
@@ -194,7 +194,7 @@ public class TestParenting01cSwingAWT extends UITestCase {
         setDemoFields(demo1, glWindow1, false);
         glWindow1.addGLEventListener(demo1);
         Animator animator1 = new Animator(glWindow1);
-        animator1.setUpdateFPSFrames(1, System.err);
+        animator1.setUpdateFPSFrames(1, null);
         animator1.start();
         
         final GLWindow _glWindow1 = glWindow1;
@@ -297,17 +297,17 @@ public class TestParenting01cSwingAWT extends UITestCase {
                     _jFrame1.setVisible(false);
                     _jFrame2.setVisible(false);
                 } });
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
         SwingUtilities.invokeAndWait(new Runnable() {
                 public void run() {
                     _jFrame1.dispose();
                     _jFrame2.dispose();
                 } });
-        Assert.assertEquals(true, glWindow1.isValid());
+        Assert.assertEquals(true, glWindow1.isNativeValid());
 
-        glWindow1.invalidate();
-        //Assert.assertEquals(false, glWindow1.isValid());
+        glWindow1.destroy();
+        Assert.assertEquals(false, glWindow1.isNativeValid());
     }
 
     public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting02AWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting02AWT.java
index 20388e295..b6e02d810 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting02AWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting02AWT.java
@@ -213,7 +213,7 @@ public class TestParenting02AWT extends UITestCase {
         }
         Thread.sleep(waitReparent);
 
-        glWindow.invalidate();
+        glWindow.destroy();
         if(useLayout) {
             frame.remove(newtCanvasAWT);
         }
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03AWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03AWT.java
index 9ff02346b..7c04e041b 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03AWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03AWT.java
@@ -75,7 +75,7 @@ public class TestParenting03AWT extends UITestCase {
 
     public void testWindowParenting1AWTOneNewtChild() throws InterruptedException, InvocationTargetException {
         GLWindow glWindow1 = GLWindow.create(glCaps);
-        glWindow1.setUpdateFPSFrames(1, System.err);
+        glWindow1.setUpdateFPSFrames(1, null);
         glWindow1.setUndecorated(true);
         NewtCanvasAWT newtCanvasAWT1 = new NewtCanvasAWT(glWindow1);
         newtCanvasAWT1.setPreferredSize(size);
@@ -136,7 +136,7 @@ public class TestParenting03AWT extends UITestCase {
         Assert.assertEquals(null, animator1.getThread());
 
         frame1.dispose();
-        glWindow1.invalidate();
+        glWindow1.destroy();
     }
 
     public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03bAWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03bAWT.java
index 69af936ab..53488a44d 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03bAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting03bAWT.java
@@ -73,7 +73,7 @@ public class TestParenting03bAWT extends UITestCase {
 
     public void testWindowParenting1AWTTwoNewtChilds() throws InterruptedException, InvocationTargetException {
         GLWindow glWindow1 = GLWindow.create(glCaps);
-        glWindow1.setUpdateFPSFrames(1, System.err);
+        glWindow1.setUpdateFPSFrames(1, null);
         glWindow1.setUndecorated(true);
         NewtCanvasAWT newtCanvasAWT1 = new NewtCanvasAWT(glWindow1);
         newtCanvasAWT1.setPreferredSize(size);
@@ -104,7 +104,7 @@ public class TestParenting03bAWT extends UITestCase {
         animator1.start();
 
         GLWindow glWindow2 = GLWindow.create(glCaps);
-        glWindow2.setUpdateFPSFrames(1, System.err);
+        glWindow2.setUpdateFPSFrames(1, null);
         glWindow2.setUndecorated(true);
         NewtCanvasAWT newtCanvasAWT2 = new NewtCanvasAWT(glWindow2);
         newtCanvasAWT2.setPreferredSize(size);
@@ -190,8 +190,8 @@ public class TestParenting03bAWT extends UITestCase {
         Assert.assertEquals(null, animator2.getThread());
 
         frame1.dispose();
-        glWindow1.invalidate();
-        glWindow2.invalidate();
+        glWindow1.destroy();
+        glWindow2.destroy();
     }
 
     public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {