Bug 682 - Relocating javax.media.opengl.* -> com.jogamp.opengl.* (Part 2)

Relocation javax.media.nativewindow.* -> com.jogamp.nativewindow.*
Relocation javax.media.opengl.* -> com.jogamp.opengl.*

4 files changed, 0 insertions, 4458 deletions

diff --git a/src/jogl/classes/javax/media/opengl/awt/AWTGLAutoDrawable.java b/src/jogl/classes/javax/media/opengl/awt/AWTGLAutoDrawable.java
deleted file mode 100644
index 6e273e4e6..000000000
--- a/src/jogl/classes/javax/media/opengl/awt/AWTGLAutoDrawable.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- * - Redistribution 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.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- *
- * Sun gratefully acknowledges that this software was originally authored
- * and developed by Kenneth Bradley Russell and Christopher John Kline.
- */
-
-package com.jogamp.opengl.awt;
-
-import com.jogamp.opengl.GLAutoDrawable;
-
-public interface AWTGLAutoDrawable extends GLAutoDrawable, ComponentEvents {
-  /** Requests a new width and height for this AWTGLAutoDrawable. */
-  public void setSize(int width, int height);
-
-  /** Schedules a repaint of the component at some point in the
-      future. */
-  public void repaint();
-}
diff --git a/src/jogl/classes/javax/media/opengl/awt/ComponentEvents.java b/src/jogl/classes/javax/media/opengl/awt/ComponentEvents.java
deleted file mode 100644
index 996776c9b..000000000
--- a/src/jogl/classes/javax/media/opengl/awt/ComponentEvents.java
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- * - Redistribution 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.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- *
- * Sun gratefully acknowledges that this software was originally authored
- * and developed by Kenneth Bradley Russell and Christopher John Kline.
- */
-
-package com.jogamp.opengl.awt;
-
-import com.jogamp.opengl.*;
-import java.awt.event.*;
-import java.beans.PropertyChangeListener;
-
-/** Factors out the listener manipulation for the events supported by
-    all of the {@link GLDrawable} implementations. Provided to reduce
-    clutter in the documentation for GLDrawable. */
-
-public interface ComponentEvents {
-  public void addComponentListener(ComponentListener l);
-  public void removeComponentListener(ComponentListener l);
-  public void addFocusListener(FocusListener l);
-  public void removeFocusListener(FocusListener l);
-  public void addHierarchyBoundsListener(HierarchyBoundsListener l);
-  public void removeHierarchyBoundsListener(HierarchyBoundsListener l);
-  public void addHierarchyListener(HierarchyListener l);
-  public void removeHierarchyListener(HierarchyListener l);
-  public void addInputMethodListener(InputMethodListener l);
-  public void removeInputMethodListener(InputMethodListener l);
-  public void addKeyListener(KeyListener l);
-  public void removeKeyListener(KeyListener l);
-  public void addMouseListener(MouseListener l);
-  public void removeMouseListener(MouseListener l);
-  public void addMouseMotionListener(MouseMotionListener l);
-  public void removeMouseMotionListener(MouseMotionListener l);
-  public void addMouseWheelListener(MouseWheelListener l);
-  public void removeMouseWheelListener(MouseWheelListener l);
-  public void addPropertyChangeListener(PropertyChangeListener listener);
-  public void removePropertyChangeListener(PropertyChangeListener listener);
-  public void addPropertyChangeListener(String propertyName,
-                                        PropertyChangeListener listener);
-  public void removePropertyChangeListener(String propertyName,
-                                           PropertyChangeListener listener);
-}
diff --git a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
deleted file mode 100644
index 11d217535..000000000
--- a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
+++ /dev/null
@@ -1,1643 +0,0 @@
-/*
- * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
- * Copyright (c) 2010 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:
- *
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- * - Redistribution 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.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- *
- * Sun gratefully acknowledges that this software was originally authored
- * and developed by Kenneth Bradley Russell and Christopher John Kline.
- */
-
-package com.jogamp.opengl.awt;
-
-import java.beans.Beans;
-import java.lang.reflect.Method;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.awt.Canvas;
-import java.awt.Color;
-import java.awt.FontMetrics;
-import java.awt.Frame;
-import java.awt.Graphics;
-import java.awt.Graphics2D;
-import java.awt.GraphicsConfiguration;
-import java.awt.GraphicsDevice;
-import java.awt.event.HierarchyEvent;
-import java.awt.event.HierarchyListener;
-import java.awt.geom.NoninvertibleTransformException;
-import java.awt.geom.Rectangle2D;
-import java.awt.EventQueue;
-import java.lang.reflect.InvocationTargetException;
-import java.util.ArrayList;
-import java.util.List;
-
-import com.jogamp.nativewindow.AbstractGraphicsConfiguration;
-import com.jogamp.nativewindow.OffscreenLayerOption;
-import com.jogamp.nativewindow.ScalableSurface;
-import com.jogamp.nativewindow.VisualIDHolder;
-import com.jogamp.nativewindow.WindowClosingProtocol;
-import com.jogamp.nativewindow.AbstractGraphicsDevice;
-import com.jogamp.nativewindow.AbstractGraphicsScreen;
-import com.jogamp.nativewindow.GraphicsConfigurationFactory;
-import com.jogamp.nativewindow.NativeSurface;
-import com.jogamp.nativewindow.NativeWindowFactory;
-import com.jogamp.opengl.GL;
-import com.jogamp.opengl.GLAnimatorControl;
-import com.jogamp.opengl.GLAutoDrawable;
-import com.jogamp.opengl.GLCapabilities;
-import com.jogamp.opengl.GLCapabilitiesChooser;
-import com.jogamp.opengl.GLCapabilitiesImmutable;
-import com.jogamp.opengl.GLContext;
-import com.jogamp.opengl.GLDrawable;
-import com.jogamp.opengl.GLDrawableFactory;
-import com.jogamp.opengl.GLEventListener;
-import com.jogamp.opengl.GLException;
-import com.jogamp.opengl.GLOffscreenAutoDrawable;
-import com.jogamp.opengl.GLProfile;
-import com.jogamp.opengl.GLRunnable;
-import com.jogamp.opengl.GLSharedContextSetter;
-import com.jogamp.opengl.Threading;
-
-import com.jogamp.common.GlueGenVersion;
-import com.jogamp.common.util.VersionUtil;
-import com.jogamp.common.util.awt.AWTEDTExecutor;
-import com.jogamp.common.util.locks.LockFactory;
-import com.jogamp.common.util.locks.RecursiveLock;
-import com.jogamp.nativewindow.awt.AWTGraphicsConfiguration;
-import com.jogamp.nativewindow.awt.AWTGraphicsDevice;
-import com.jogamp.nativewindow.awt.AWTGraphicsScreen;
-import com.jogamp.nativewindow.awt.AWTPrintLifecycle;
-import com.jogamp.nativewindow.awt.AWTWindowClosingProtocol;
-import com.jogamp.nativewindow.awt.JAWTWindow;
-import com.jogamp.opengl.JoglVersion;
-import com.jogamp.opengl.util.GLDrawableUtil;
-import com.jogamp.opengl.util.TileRenderer;
-
-import jogamp.nativewindow.SurfaceScaleUtils;
-import jogamp.opengl.Debug;
-import jogamp.opengl.GLContextImpl;
-import jogamp.opengl.GLDrawableHelper;
-import jogamp.opengl.GLDrawableImpl;
-import jogamp.opengl.awt.AWTTilePainter;
-
-// FIXME: Subclasses need to call resetGLFunctionAvailability() on their
-// context whenever the displayChanged() function is called on our
-// GLEventListeners
-
-/** A heavyweight AWT component which provides OpenGL rendering
-    support. This is the primary implementation of an AWT {@link GLDrawable};
-    {@link GLJPanel} is provided for compatibility with Swing user
-    interfaces when adding a heavyweight doesn't work either because
-    of Z-ordering or LayoutManager problems.
- *
- * <h5><a name="offscreenlayer">Offscreen Layer Remarks</a></h5>
- *
- * {@link OffscreenLayerOption#setShallUseOffscreenLayer(boolean) setShallUseOffscreenLayer(true)}
- * maybe called to use an offscreen drawable (FBO or PBuffer) allowing
- * the underlying JAWT mechanism to composite the image, if supported.
- * <p>
- * {@link OffscreenLayerOption#setShallUseOffscreenLayer(boolean) setShallUseOffscreenLayer(true)}
- * is being called if {@link GLCapabilitiesImmutable#isOnscreen()} is <code>false</code>.
- * </p>
- *
- * <h5><a name="java2dgl">Java2D OpenGL Remarks</a></h5>
- *
- * To avoid any conflicts with a potential Java2D OpenGL context,<br>
- * you shall consider setting the following JVM properties:<br>
- * <ul>
- *    <li><pre>sun.java2d.opengl=false</pre></li>
- *    <li><pre>sun.java2d.noddraw=true</pre></li>
- * </ul>
- * This is especially true in case you want to utilize a GLProfile other than
- * {@link GLProfile#GL2}, eg. using {@link GLProfile#getMaxFixedFunc()}.<br>
- * On the other hand, if you like to experiment with GLJPanel's utilization
- * of Java2D's OpenGL pipeline, you have to set them to
- * <ul>
- *    <li><pre>sun.java2d.opengl=true</pre></li>
- *    <li><pre>sun.java2d.noddraw=true</pre></li>
- * </ul>
- *
- * <h5><a name="backgrounderase">Disable Background Erase</a></h5>
- *
- * GLCanvas tries to disable background erase for the AWT Canvas
- * before native peer creation (X11) and after it (Windows), <br>
- * utilizing the optional {@link java.awt.Toolkit} method <code>disableBeackgroundErase(java.awt.Canvas)</code>.<br>
- * However if this does not give you the desired results, you may want to disable AWT background erase in general:
- * <ul>
- *   <li><pre>sun.awt.noerasebackground=true</pre></li>
- * </ul>
- *
- * <p>
- * <a name="contextSharing"><h5>OpenGL Context Sharing</h5></a>
- * To share a {@link GLContext} see the following note in the documentation overview:
- * <a href="../../../../overview-summary.html#SHARING">context sharing</a>
- * as well as {@link GLSharedContextSetter}.
- * </p>
- */
-
-@SuppressWarnings("serial")
-public class GLCanvas extends Canvas implements AWTGLAutoDrawable, WindowClosingProtocol, OffscreenLayerOption,
-                                                AWTPrintLifecycle, GLSharedContextSetter, ScalableSurface {
-
-  private static final boolean DEBUG = Debug.debug("GLCanvas");
-
-  private final RecursiveLock lock = LockFactory.createRecursiveLock();
-  private final GLDrawableHelper helper = new GLDrawableHelper();
-  private AWTGraphicsConfiguration awtConfig;
-  private volatile GLDrawableImpl drawable; // volatile: avoid locking for read-only access
-  private volatile JAWTWindow jawtWindow; // the JAWTWindow presentation of this AWT Canvas, bound to the 'drawable' lifecycle
-  private volatile GLContextImpl context; // volatile: avoid locking for read-only access
-  private volatile boolean sendReshape = false; // volatile: maybe written by EDT w/o locking
-  private final float[] minPixelScale = new float[] { ScalableSurface.IDENTITY_PIXELSCALE, ScalableSurface.IDENTITY_PIXELSCALE };
-  private final float[] maxPixelScale = new float[] { ScalableSurface.IDENTITY_PIXELSCALE, ScalableSurface.IDENTITY_PIXELSCALE };
-  private final float[] hasPixelScale = new float[] { ScalableSurface.IDENTITY_PIXELSCALE, ScalableSurface.IDENTITY_PIXELSCALE };
-  final float[] reqPixelScale = new float[] { ScalableSurface.AUTOMAX_PIXELSCALE, ScalableSurface.AUTOMAX_PIXELSCALE };
-
-  // copy of the cstr args, mainly for recreation
-  private final GLCapabilitiesImmutable capsReqUser;
-  private final GLCapabilitiesChooser chooser;
-  private int additionalCtxCreationFlags = 0;
-  private final GraphicsDevice device;
-  private boolean shallUseOffscreenLayer = false;
-
-  private volatile boolean isShowing;
-  private final HierarchyListener hierarchyListener = new HierarchyListener() {
-      @Override
-      public void hierarchyChanged(final HierarchyEvent e) {
-          isShowing = GLCanvas.this.isShowing();
-      }
-  };
-
-  private final AWTWindowClosingProtocol awtWindowClosingProtocol =
-          new AWTWindowClosingProtocol(this, new Runnable() {
-                @Override
-                public void run() {
-                    GLCanvas.this.destroyImpl( true );
-                }
-            }, null);
-
-  /** Creates a new GLCanvas component with a default set of OpenGL
-      capabilities, using the default OpenGL capabilities selection
-      mechanism, on the default screen device.
-      <p>
-      See details about <a href="#contextSharing">OpenGL context sharing</a>.
-      </p>
-   * @throws GLException if no default profile is available for the default desktop device.
-   */
-  public GLCanvas() throws GLException {
-    this(null);
-  }
-
-  /** Creates a new GLCanvas component with the requested set of
-      OpenGL capabilities, using the default OpenGL capabilities
-      selection mechanism, on the default screen device.
-      <p>
-      See details about <a href="#contextSharing">OpenGL context sharing</a>.
-      </p>
-   * @throws GLException if no GLCapabilities are given and no default profile is available for the default desktop device.
-   * @see GLCanvas#GLCanvas(com.jogamp.opengl.GLCapabilitiesImmutable, com.jogamp.opengl.GLCapabilitiesChooser, com.jogamp.opengl.GLContext, java.awt.GraphicsDevice)
-   */
-  public GLCanvas(final GLCapabilitiesImmutable capsReqUser) throws GLException {
-    this(capsReqUser, null, null);
-  }
-
-  /** Creates a new GLCanvas component. The passed GLCapabilities
-      specifies the OpenGL capabilities for the component; if null, a
-      default set of capabilities is used. The GLCapabilitiesChooser
-      specifies the algorithm for selecting one of the available
-      GLCapabilities for the component; a DefaultGLCapabilitesChooser
-      is used if null is passed for this argument.
-      The passed GraphicsDevice indicates the screen on
-      which to create the GLCanvas; the GLDrawableFactory uses the
-      default screen device of the local GraphicsEnvironment if null
-      is passed for this argument.
-      <p>
-      See details about <a href="#contextSharing">OpenGL context sharing</a>.
-      </p>
-   * @throws GLException if no GLCapabilities are given and no default profile is available for the default desktop device.
-   */
-  public GLCanvas(final GLCapabilitiesImmutable capsReqUser,
-                  final GLCapabilitiesChooser chooser,
-                  final GraphicsDevice device)
-      throws GLException
-  {
-    /*
-     * Determination of the native window is made in 'super.addNotify()',
-     * which creates the native peer using AWT's GraphicsConfiguration.
-     * GraphicsConfiguration is returned by this class overwritten
-     * 'getGraphicsConfiguration()', which returns our OpenGL compatible
-     * 'chosen' GraphicsConfiguration.
-     */
-    super();
-
-    if(null==capsReqUser) {
-        this.capsReqUser = new GLCapabilities(GLProfile.getDefault(GLProfile.getDefaultDevice()));
-    } else {
-        // don't allow the user to change data
-        this.capsReqUser = (GLCapabilitiesImmutable) capsReqUser.cloneMutable();
-    }
-    if( !this.capsReqUser.isOnscreen() ) {
-        setShallUseOffscreenLayer(true); // trigger offscreen layer - if supported
-    }
-
-    if(null==device) {
-        final GraphicsConfiguration gc = super.getGraphicsConfiguration();
-        if(null!=gc) {
-            this.device = gc.getDevice();
-        } else {
-            this.device = null;
-        }
-    } else {
-        this.device = device;
-    }
-
-    // instantiation will be issued in addNotify()
-    this.chooser = chooser;
-
-    this.addHierarchyListener(hierarchyListener);
-    this.isShowing = isShowing();
-  }
-
-  @Override
-  public final void setSharedContext(final GLContext sharedContext) throws IllegalStateException {
-      helper.setSharedContext(this.context, sharedContext);
-  }
-
-  @Override
-  public final void setSharedAutoDrawable(final GLAutoDrawable sharedAutoDrawable) throws IllegalStateException {
-      helper.setSharedAutoDrawable(this, sharedAutoDrawable);
-  }
-
-  @Override
-  public final Object getUpstreamWidget() {
-    return this;
-  }
-
-  @Override
-  public final RecursiveLock getUpstreamLock() { return lock; }
-
-  @Override
-  public final boolean isThreadGLCapable() { return Threading.isOpenGLThread(); }
-
-  @Override
-  public void setShallUseOffscreenLayer(final boolean v) {
-      shallUseOffscreenLayer = v;
-  }
-
-  @Override
-  public final boolean getShallUseOffscreenLayer() {
-      return shallUseOffscreenLayer;
-  }
-
-  @Override
-  public final boolean isOffscreenLayerSurfaceEnabled() {
-      final JAWTWindow _jawtWindow = jawtWindow;
-      if(null != _jawtWindow) {
-          return _jawtWindow.isOffscreenLayerSurfaceEnabled();
-      }
-      return false;
-  }
-
-
-  /**
-   * Overridden to choose a GraphicsConfiguration on a parent container's
-   * GraphicsDevice because both devices
-   */
-  @Override
-  public GraphicsConfiguration getGraphicsConfiguration() {
-    /*
-     * Workaround for problems with Xinerama and java.awt.Component.checkGD
-     * when adding to a container on a different graphics device than the
-     * one that this Canvas is associated with.
-     *
-     * GC will be null unless:
-     *   - A native peer has assigned it. This means we have a native
-     *     peer, and are already comitted to a graphics configuration.
-     *   - This canvas has been added to a component hierarchy and has
-     *     an ancestor with a non-null GC, but the native peer has not
-     *     yet been created. This means we can still choose the GC on
-     *     all platforms since the peer hasn't been created.
-     */
-    final GraphicsConfiguration gc = super.getGraphicsConfiguration();
-
-    if( Beans.isDesignTime() ) {
-        return gc;
-    }
-
-    /*
-     * chosen is only non-null on platforms where the GLDrawableFactory
-     * returns a non-null GraphicsConfiguration (in the GLCanvas
-     * constructor).
-     *
-     * if gc is from this Canvas' native peer then it should equal chosen,
-     * otherwise it is from an ancestor component that this Canvas is being
-     * added to, and we go into this block.
-     */
-    GraphicsConfiguration chosen =  null != awtConfig ? awtConfig.getAWTGraphicsConfiguration() : null;
-
-    if (gc != null && chosen != null && !chosen.equals(gc)) {
-      /*
-       * Check for compatibility with gc. If they differ by only the
-       * device then return a new GCconfig with the super-class' GDevice
-       * (and presumably the same visual ID in Xinerama).
-       *
-       */
-      if (!chosen.getDevice().getIDstring().equals(gc.getDevice().getIDstring())) {
-        /*
-         * Here we select a GraphicsConfiguration on the alternate
-         * device that is presumably identical to the chosen
-         * configuration, but on the other device.
-         *
-         * Should really check to ensure that we select a configuration
-         * with the same X visual ID for Xinerama screens, otherwise the
-         * GLDrawable may have the wrong visual ID (I don't think this
-         * ever gets updated). May need to add a method to
-         * X11GLDrawableFactory to do this in a platform specific
-         * manner.
-         *
-         * However, on platforms where we can actually get into this
-         * block, both devices should have the same visual list, and the
-         * same configuration should be selected here.
-         */
-        final AWTGraphicsConfiguration config = chooseGraphicsConfiguration( (GLCapabilitiesImmutable)awtConfig.getChosenCapabilities(),
-                                                                       (GLCapabilitiesImmutable)awtConfig.getRequestedCapabilities(),
-                                                                       chooser, gc.getDevice());
-        final GraphicsConfiguration compatible = config.getAWTGraphicsConfiguration();
-        final boolean equalCaps = config.getChosenCapabilities().equals(awtConfig.getChosenCapabilities());
-        if(DEBUG) {
-            System.err.println(getThreadName()+": Info:");
-            System.err.println("Created Config (n): HAVE    GC "+chosen);
-            System.err.println("Created Config (n): THIS    GC "+gc);
-            System.err.println("Created Config (n): Choosen GC "+compatible);
-            System.err.println("Created Config (n): HAVE    CF "+awtConfig);
-            System.err.println("Created Config (n): Choosen CF "+config);
-            System.err.println("Created Config (n): EQUALS CAPS "+equalCaps);
-            // Thread.dumpStack();
-        }
-
-        if (compatible != null) {
-          /*
-           * Save the new GC for equals test above, and to return to
-           * any outside callers of this method.
-           */
-          chosen = compatible;
-
-          if( !equalCaps && GLAutoDrawable.SCREEN_CHANGE_ACTION_ENABLED ) {
-              // complete destruction!
-              destroyImpl( true );
-              // recreation!
-              awtConfig = config;
-              createJAWTDrawableAndContext();
-              validateGLDrawable();
-          } else {
-              awtConfig = config;
-          }
-        }
-      }
-
-      /*
-       * If a compatible GC was not found in the block above, this will
-       * return the GC that was selected in the constructor (and might
-       * cause an exception in Component.checkGD when adding to a
-       * container, but in this case that would be the desired behavior).
-       *
-       */
-      return chosen;
-    } else if (gc == null) {
-      /*
-       * The GC is null, which means we have no native peer, and are not
-       * part of a (realized) component hierarchy. So we return the
-       * desired visual that was selected in the constructor (possibly
-       * null).
-       */
-      return chosen;
-    }
-
-    /*
-     * Otherwise we have not explicitly selected a GC in the constructor, so
-     * just return what Canvas would have.
-     */
-    return gc;
-  }
-
-  @Override
-  public GLContext createContext(final GLContext shareWith) {
-    final RecursiveLock _lock = lock;
-    _lock.lock();
-    try {
-        if(drawable != null) {
-          final GLContext _ctx = drawable.createContext(shareWith);
-          _ctx.setContextCreationFlags(additionalCtxCreationFlags);
-          return _ctx;
-        }
-        return null;
-    } finally {
-        _lock.unlock();
-    }
-  }
-
-  private final void setRealizedImpl(final boolean realized) {
-      final RecursiveLock _lock = lock;
-      _lock.lock();
-      try {
-          final GLDrawable _drawable = drawable;
-          if( null == _drawable || realized == _drawable.isRealized() ||
-              realized && ( 0 >= _drawable.getSurfaceWidth() || 0 >= _drawable.getSurfaceHeight() ) ) {
-              return;
-          }
-         _drawable.setRealized(realized);
-          if( realized && _drawable.isRealized() ) {
-              sendReshape=true; // ensure a reshape is being send ..
-          }
-      } finally {
-          _lock.unlock();
-      }
-  }
-  private final Runnable realizeOnEDTAction = new Runnable() {
-    @Override
-    public void run() { setRealizedImpl(true); }
-  };
-  private final Runnable unrealizeOnEDTAction = new Runnable() {
-    @Override
-    public void run() { setRealizedImpl(false); }
-  };
-
-  @Override
-  public final void setRealized(final boolean realized) {
-      // Make sure drawable realization happens on AWT-EDT and only there. Consider the AWTTree lock!
-      AWTEDTExecutor.singleton.invoke(getTreeLock(), false /* allowOnNonEDT */, true /* wait */, realized ? realizeOnEDTAction : unrealizeOnEDTAction);
-  }
-
-  @Override
-  public boolean isRealized() {
-      final GLDrawable _drawable = drawable;
-      return ( null != _drawable ) ? _drawable.isRealized() : false;
-  }
-
-  @Override
-  public WindowClosingMode getDefaultCloseOperation() {
-      return awtWindowClosingProtocol.getDefaultCloseOperation();
-  }
-
-  @Override
-  public WindowClosingMode setDefaultCloseOperation(final WindowClosingMode op) {
-      return awtWindowClosingProtocol.setDefaultCloseOperation(op);
-  }
-
-  @Override
-  public void display() {
-    if( !validateGLDrawable() ) {
-        if(DEBUG) {
-            System.err.println(getThreadName()+": Info: GLCanvas display - skipped GL render, drawable not valid yet");
-        }
-        return; // not yet available ..
-    }
-    if( isShowing && !printActive ) {
-        Threading.invoke(true, displayOnEDTAction, getTreeLock());
-    }
-  }
-
-  /**
-   * {@inheritDoc}
-   *
-   * <p>
-   * This impl. only destroys all GL related resources.
-   * </p>
-   * <p>
-   * This impl. does not remove the GLCanvas from it's parent AWT container
-   * so this class's {@link #removeNotify()} AWT override won't get called.
-   * To do so, remove this component from it's parent AWT container.
-   * </p>
-   */
-  @Override
-  public void destroy() {
-    destroyImpl( false );
-  }
-
-  protected void destroyImpl(final boolean destroyJAWTWindowAndAWTDevice) {
-    Threading.invoke(true, destroyOnEDTAction, getTreeLock());
-    if( destroyJAWTWindowAndAWTDevice ) {
-        AWTEDTExecutor.singleton.invoke(getTreeLock(), true /* allowOnNonEDT */, true /* wait */, disposeJAWTWindowAndAWTDeviceOnEDT);
-    }
-  }
-
-  /** Overridden to cause OpenGL rendering to be performed during
-      repaint cycles. Subclasses which override this method must call
-      super.paint() in their paint() method in order to function
-      properly.
-    */
-  @Override
-  public void paint(final Graphics g) {
-    if( Beans.isDesignTime() ) {
-      // Make GLCanvas behave better in NetBeans GUI builder
-      g.setColor(Color.BLACK);
-      g.fillRect(0, 0, getWidth(), getHeight());
-      final FontMetrics fm = g.getFontMetrics();
-      String name = getName();
-      if (name == null) {
-        name = getClass().getName();
-        final int idx = name.lastIndexOf('.');
-        if (idx >= 0) {
-          name = name.substring(idx + 1);
-        }
-      }
-      final Rectangle2D bounds = fm.getStringBounds(name, g);
-      g.setColor(Color.WHITE);
-      g.drawString(name,
-                   (int) ((getWidth()  - bounds.getWidth())  / 2),
-                   (int) ((getHeight() + bounds.getHeight()) / 2));
-    } else if( !this.helper.isAnimatorAnimatingOnOtherThread() ) {
-        display();
-    }
-  }
-
-  /** Overridden to track when this component is added to a container.
-      Subclasses which override this method must call
-      super.addNotify() in their addNotify() method in order to
-      function properly. <P>
-
-      <B>Overrides:</B>
-      <DL><DD><CODE>addNotify</CODE> in class <CODE>java.awt.Component</CODE></DD></DL> */
-    @SuppressWarnings("deprecation")
-    @Override
-  public void addNotify() {
-    final RecursiveLock _lock = lock;
-    _lock.lock();
-    try {
-        final boolean isBeansDesignTime = Beans.isDesignTime();
-
-        if(DEBUG) {
-            System.err.println(getThreadName()+": Info: addNotify - start, bounds: "+this.getBounds()+", isBeansDesignTime "+isBeansDesignTime);
-            // Thread.dumpStack();
-        }
-
-        if( isBeansDesignTime ) {
-            super.addNotify();
-        } else {
-            /**
-             * 'super.addNotify()' determines the GraphicsConfiguration,
-             * while calling this class's overriden 'getGraphicsConfiguration()' method
-             * after which it creates the native peer.
-             * Hence we have to set the 'awtConfig' before since it's GraphicsConfiguration
-             * is being used in getGraphicsConfiguration().
-             * This code order also allows recreation, ie re-adding the GLCanvas.
-             */
-            awtConfig = chooseGraphicsConfiguration(capsReqUser, capsReqUser, chooser, device);
-            if(null==awtConfig) {
-                throw new GLException("Error: NULL AWTGraphicsConfiguration");
-            }
-
-            // before native peer is valid: X11
-            disableBackgroundErase();
-
-            // issues getGraphicsConfiguration() and creates the native peer
-            super.addNotify();
-
-            // after native peer is valid: Windows
-            disableBackgroundErase();
-
-            createJAWTDrawableAndContext();
-
-            // init drawable by paint/display makes the init sequence more equal
-            // for all launch flavors (applet/javaws/..)
-            // validateGLDrawable();
-        }
-        awtWindowClosingProtocol.addClosingListener();
-
-        if(DEBUG) {
-            System.err.println(getThreadName()+": Info: addNotify - end: peer: "+getPeer());
-        }
-    } finally {
-        _lock.unlock();
-    }
-  }
-
-  @Override
-  public final boolean setSurfaceScale(final float[] pixelScale) {
-      System.arraycopy(pixelScale, 0, reqPixelScale, 0, 2);
-      if( isRealized() && isShowing ) {
-          Threading.invoke(true, setSurfaceScaleOnEDTAction, getTreeLock());
-          return true;
-      } else {
-          return false;
-      }
-  }
-  private final Runnable setSurfaceScaleOnEDTAction = new Runnable() {
-    @Override
-    public void run() {
-        final RecursiveLock _lock = lock;
-        _lock.lock();
-        try {
-            if( null != drawable && drawable.isRealized() ) {
-                if( setSurfaceScaleImpl(jawtWindow) ) {
-                    reshapeImpl(getWidth(), getHeight());
-                    if( !helper.isAnimatorAnimatingOnOtherThread() ) {
-                        helper.invokeGL(drawable, context, displayAction, initAction); // display
-                    }
-                }
-            }
-        } finally {
-            _lock.unlock();
-        }
-    }  };
-  private final boolean setSurfaceScaleImpl(final ScalableSurface ns) {
-      if( ns.setSurfaceScale(reqPixelScale) ) {
-          ns.getCurrentSurfaceScale(hasPixelScale);
-          return true;
-      } else {
-          return false;
-      }
-  }
-
-  private final boolean updatePixelScale() {
-      if( jawtWindow.hasPixelScaleChanged() ) {
-          jawtWindow.getMaximumSurfaceScale(maxPixelScale);
-          jawtWindow.getMinimumSurfaceScale(minPixelScale);
-          return setSurfaceScaleImpl(jawtWindow);
-      } else {
-          return false;
-      }
-  }
-
-  @Override
-  public final float[] getRequestedSurfaceScale(final float[] result) {
-      System.arraycopy(reqPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  @Override
-  public final float[] getCurrentSurfaceScale(final float[] result) {
-      System.arraycopy(hasPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  @Override
-  public float[] getMinimumSurfaceScale(final float[] result) {
-      System.arraycopy(minPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  @Override
-  public float[] getMaximumSurfaceScale(final float[] result) {
-      System.arraycopy(maxPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  private void createJAWTDrawableAndContext() {
-    if ( !Beans.isDesignTime() ) {
-        jawtWindow = (JAWTWindow) NativeWindowFactory.getNativeWindow(this, awtConfig);
-        jawtWindow.setShallUseOffscreenLayer(shallUseOffscreenLayer);
-        jawtWindow.lockSurface();
-        try {
-            jawtWindow.setSurfaceScale(reqPixelScale);
-            drawable = (GLDrawableImpl) GLDrawableFactory.getFactory(capsReqUser.getGLProfile()).createGLDrawable(jawtWindow);
-            createContextImpl(drawable);
-            jawtWindow.getCurrentSurfaceScale(hasPixelScale);
-            jawtWindow.getMinimumSurfaceScale(minPixelScale);
-            jawtWindow.getMaximumSurfaceScale(maxPixelScale);
-        } finally {
-            jawtWindow.unlockSurface();
-        }
-    }
-  }
-  private boolean createContextImpl(final GLDrawable drawable) {
-    final GLContext[] shareWith = { null };
-    if( !helper.isSharedGLContextPending(shareWith) ) {
-        context = (GLContextImpl) drawable.createContext(shareWith[0]);
-        context.setContextCreationFlags(additionalCtxCreationFlags);
-        if(DEBUG) {
-            System.err.println(getThreadName()+": Context created: has shared "+(null != shareWith[0]));
-        }
-        return true;
-    } else {
-        if(DEBUG) {
-            System.err.println(getThreadName()+": Context !created: pending share");
-        }
-        return false;
-    }
-  }
-
-  private boolean validateGLDrawable() {
-      if( Beans.isDesignTime() || !isDisplayable() ) {
-          return false; // early out!
-      }
-      final GLDrawable _drawable = drawable;
-      if ( null != _drawable ) {
-          boolean res = _drawable.isRealized();
-          if( !res ) {
-              // re-try drawable creation
-              if( 0 >= _drawable.getSurfaceWidth() || 0 >= _drawable.getSurfaceHeight() ) {
-                  return false; // early out!
-              }
-              setRealized(true);
-              res = _drawable.isRealized();
-              if(DEBUG) {
-                  System.err.println(getThreadName()+": Realized Drawable: isRealized "+res+", "+_drawable.toString());
-                  // Thread.dumpStack();
-              }
-          }
-          if( res && null == context ) {
-              // re-try context creation
-              res = createContextImpl(_drawable); // pending creation.
-          }
-          return res;
-      }
-      return false;
-  }
-
-  /** <p>Overridden to track when this component is removed from a
-      container. Subclasses which override this method must call
-      super.removeNotify() in their removeNotify() method in order to
-      function properly. </p>
-      <p>User shall not call this method outside of EDT, read the AWT/Swing specs
-      about this.</p>
-      <B>Overrides:</B>
-      <DL><DD><CODE>removeNotify</CODE> in class <CODE>java.awt.Component</CODE></DD></DL> */
-    @SuppressWarnings("deprecation")
-    @Override
-  public void removeNotify() {
-    if(DEBUG) {
-        System.err.println(getThreadName()+": Info: removeNotify - start");
-        // Thread.dumpStack();
-    }
-
-    awtWindowClosingProtocol.removeClosingListener();
-
-    if( Beans.isDesignTime() ) {
-      super.removeNotify();
-    } else {
-      try {
-        destroyImpl( true );
-      } finally {
-        super.removeNotify();
-      }
-    }
-    if(DEBUG) {
-        System.err.println(getThreadName()+": Info: removeNotify - end, peer: "+getPeer());
-    }
-  }
-
-  /** Overridden to cause {@link GLDrawableHelper#reshape} to be
-      called on all registered {@link GLEventListener}s. Subclasses
-      which override this method must call super.reshape() in
-      their reshape() method in order to function properly. <P>
-
-      <B>Overrides:</B>
-      <DL><DD><CODE>reshape</CODE> in class <CODE>java.awt.Component</CODE></DD></DL> */
-    @SuppressWarnings("deprecation")
-    @Override
-  public void reshape(final int x, final int y, final int width, final int height) {
-    synchronized (getTreeLock()) { // super.reshape(..) claims tree lock, so we do extend it's lock over reshape
-        super.reshape(x, y, width, height);
-        reshapeImpl(width, height);
-    }
-  }
-  private void reshapeImpl(final int width, final int height) {
-    final int scaledWidth = SurfaceScaleUtils.scale(width, hasPixelScale[0]);
-    final int scaledHeight = SurfaceScaleUtils.scale(height, hasPixelScale[1]);
-
-    if(DEBUG) {
-        final NativeSurface ns = getNativeSurface();
-        final long nsH = null != ns ? ns.getSurfaceHandle() : 0;
-        System.err.println(getThreadName()+": GLCanvas.reshape.0 "+this.getName()+" resize"+(printActive?"WithinPrint":"")+
-                " [ this "+getWidth()+"x"+getHeight()+", pixelScale "+getPixelScaleStr()+
-                "] -> "+(printActive?"[skipped] ":"") + width+"x"+height+" * "+getPixelScaleStr()+" -> "+scaledWidth+"x"+scaledHeight+
-                " - surfaceHandle 0x"+Long.toHexString(nsH));
-        // Thread.dumpStack();
-    }
-    if( validateGLDrawable() && !printActive ) {
-        final GLDrawableImpl _drawable = drawable;
-        if( ! _drawable.getChosenGLCapabilities().isOnscreen() ) {
-            final RecursiveLock _lock = lock;
-            _lock.lock();
-            try {
-                final GLDrawableImpl _drawableNew = GLDrawableHelper.resizeOffscreenDrawable(_drawable, context, scaledWidth, scaledHeight);
-                if(_drawable != _drawableNew) {
-                    // write back
-                    drawable = _drawableNew;
-                }
-            } finally {
-               _lock.unlock();
-            }
-        }
-        sendReshape = true; // async if display() doesn't get called below, but avoiding deadlock
-    }
-  }
-
-  /**
-   * Overridden from Canvas to prevent the AWT's clearing of the
-   * canvas from interfering with the OpenGL rendering.
-   */
-  @Override
-  public void update(final Graphics g) {
-    paint(g);
-  }
-
-  private volatile boolean printActive = false;
-  private GLAnimatorControl printAnimator = null;
-  private GLAutoDrawable printGLAD = null;
-  private AWTTilePainter printAWTTiles = null;
-
-  @Override
-  public void setupPrint(final double scaleMatX, final double scaleMatY, final int numSamples, final int tileWidth, final int tileHeight) {
-      printActive = true;
-      final int componentCount = isOpaque() ? 3 : 4;
-      final TileRenderer printRenderer = new TileRenderer();
-      printAWTTiles = new AWTTilePainter(printRenderer, componentCount, scaleMatX, scaleMatY, numSamples, tileWidth, tileHeight, DEBUG);
-      AWTEDTExecutor.singleton.invoke(getTreeLock(), true /* allowOnNonEDT */, true /* wait */, setupPrintOnEDT);
-  }
-  private final Runnable setupPrintOnEDT = new Runnable() {
-      @Override
-      public void run() {
-          final RecursiveLock _lock = lock;
-          _lock.lock();
-          try {
-              if( !validateGLDrawable() ) {
-                  if(DEBUG) {
-                      System.err.println(getThreadName()+": Info: GLCanvas setupPrint - skipped GL render, drawable not valid yet");
-                  }
-                  printActive = false;
-                  return; // not yet available ..
-              }
-              if( !isVisible() ) {
-                  if(DEBUG) {
-                      System.err.println(getThreadName()+": Info: GLCanvas setupPrint - skipped GL render, canvas not visible");
-                  }
-                  printActive = false;
-                  return; // not yet available ..
-              }
-              sendReshape = false; // clear reshape flag
-              printAnimator =  helper.getAnimator();
-              if( null != printAnimator ) {
-                  printAnimator.remove(GLCanvas.this);
-              }
-              printGLAD = GLCanvas.this; // _not_ default, shall be replaced by offscreen GLAD
-              final GLCapabilitiesImmutable gladCaps = getChosenGLCapabilities();
-              final int printNumSamples = printAWTTiles.getNumSamples(gladCaps);
-              GLDrawable printDrawable = printGLAD.getDelegatedDrawable();
-              final boolean reqNewGLADSamples = printNumSamples != gladCaps.getNumSamples();
-              final boolean reqNewGLADSize = printAWTTiles.customTileWidth != -1 && printAWTTiles.customTileWidth != printDrawable.getSurfaceWidth() ||
-                                             printAWTTiles.customTileHeight != -1 && printAWTTiles.customTileHeight != printDrawable.getSurfaceHeight();
-              final boolean reqNewGLADOnscrn = gladCaps.isOnscreen();
-
-              final GLCapabilities newGLADCaps = (GLCapabilities)gladCaps.cloneMutable();
-              newGLADCaps.setDoubleBuffered(false);
-              newGLADCaps.setOnscreen(false);
-              if( printNumSamples != newGLADCaps.getNumSamples() ) {
-                  newGLADCaps.setSampleBuffers(0 < printNumSamples);
-                  newGLADCaps.setNumSamples(printNumSamples);
-              }
-              final boolean reqNewGLADSafe = GLDrawableUtil.isSwapGLContextSafe(getRequestedGLCapabilities(), gladCaps, newGLADCaps);
-
-              final boolean reqNewGLAD = ( reqNewGLADOnscrn || reqNewGLADSamples || reqNewGLADSize ) && reqNewGLADSafe;
-
-              if( DEBUG ) {
-                  System.err.println("AWT print.setup: reqNewGLAD "+reqNewGLAD+"[ onscreen "+reqNewGLADOnscrn+", samples "+reqNewGLADSamples+", size "+reqNewGLADSize+", safe "+reqNewGLADSafe+"], "+
-                                     ", drawableSize "+printDrawable.getSurfaceWidth()+"x"+printDrawable.getSurfaceHeight()+
-                                     ", customTileSize "+printAWTTiles.customTileWidth+"x"+printAWTTiles.customTileHeight+
-                                     ", scaleMat "+printAWTTiles.scaleMatX+" x "+printAWTTiles.scaleMatY+
-                                     ", numSamples "+printAWTTiles.customNumSamples+" -> "+printNumSamples+", printAnimator "+printAnimator);
-              }
-              if( reqNewGLAD ) {
-                  final GLDrawableFactory factory = GLDrawableFactory.getFactory(newGLADCaps.getGLProfile());
-                  GLOffscreenAutoDrawable offGLAD = null;
-                  try {
-                      offGLAD = factory.createOffscreenAutoDrawable(null, newGLADCaps, null,
-                                  printAWTTiles.customTileWidth != -1 ? printAWTTiles.customTileWidth : DEFAULT_PRINT_TILE_SIZE,
-                                  printAWTTiles.customTileHeight != -1 ? printAWTTiles.customTileHeight : DEFAULT_PRINT_TILE_SIZE);
-                  } catch (final GLException gle) {
-                      if( DEBUG ) {
-                          System.err.println("Caught: "+gle.getMessage());
-                          gle.printStackTrace();
-                      }
-                  }
-                  if( null != offGLAD ) {
-                      printGLAD = offGLAD;
-                      GLDrawableUtil.swapGLContextAndAllGLEventListener(GLCanvas.this, printGLAD);
-                      printDrawable = printGLAD.getDelegatedDrawable();
-                  }
-              }
-              printAWTTiles.setGLOrientation(printGLAD.isGLOriented(), printGLAD.isGLOriented());
-              printAWTTiles.renderer.setTileSize(printDrawable.getSurfaceWidth(), printDrawable.getSurfaceHeight(), 0);
-              printAWTTiles.renderer.attachAutoDrawable(printGLAD);
-              if( DEBUG ) {
-                  System.err.println("AWT print.setup "+printAWTTiles);
-                  System.err.println("AWT print.setup AA "+printNumSamples+", "+newGLADCaps);
-                  System.err.println("AWT print.setup printGLAD: "+printGLAD.getSurfaceWidth()+"x"+printGLAD.getSurfaceHeight()+", "+printGLAD);
-                  System.err.println("AWT print.setup printDraw: "+printDrawable.getSurfaceWidth()+"x"+printDrawable.getSurfaceHeight()+", "+printDrawable);
-              }
-          } finally {
-              _lock.unlock();
-          }
-      }
-  };
-
-  @Override
-  public void releasePrint() {
-      if( !printActive || null == printGLAD ) {
-          throw new IllegalStateException("setupPrint() not called");
-      }
-      sendReshape = false; // clear reshape flag
-      AWTEDTExecutor.singleton.invoke(getTreeLock(), true /* allowOnNonEDT */, true /* wait */, releasePrintOnEDT);
-  }
-  private final Runnable releasePrintOnEDT = new Runnable() {
-      @Override
-      public void run() {
-          final RecursiveLock _lock = lock;
-          _lock.lock();
-          try {
-              if( DEBUG ) {
-                  System.err.println("AWT print.release "+printAWTTiles);
-              }
-              printAWTTiles.dispose();
-              printAWTTiles= null;
-              if( printGLAD != GLCanvas.this ) {
-                  GLDrawableUtil.swapGLContextAndAllGLEventListener(printGLAD, GLCanvas.this);
-                  printGLAD.destroy();
-              }
-              printGLAD = null;
-              if( null != printAnimator ) {
-                  printAnimator.add(GLCanvas.this);
-                  printAnimator = null;
-              }
-              sendReshape = true; // trigger reshape, i.e. gl-viewport and -listener - this component might got resized!
-              printActive = false;
-              display();
-          } finally {
-              _lock.unlock();
-          }
-      }
-  };
-
-  @Override
-  public void print(final Graphics graphics) {
-      if( !printActive || null == printGLAD ) {
-          throw new IllegalStateException("setupPrint() not called");
-      }
-      if(DEBUG && !EventQueue.isDispatchThread()) {
-          System.err.println(getThreadName()+": Warning: GLCanvas print - not called from AWT-EDT");
-          // we cannot dispatch print on AWT-EDT due to printing internal locking ..
-      }
-      sendReshape = false; // clear reshape flag
-
-      final Graphics2D g2d = (Graphics2D)graphics;
-      try {
-          printAWTTiles.setupGraphics2DAndClipBounds(g2d, getWidth(), getHeight());
-          final TileRenderer tileRenderer = printAWTTiles.renderer;
-          if( DEBUG ) {
-              System.err.println("AWT print.0: "+tileRenderer);
-          }
-          if( !tileRenderer.eot() ) {
-              try {
-                  do {
-                      if( printGLAD != GLCanvas.this ) {
-                          tileRenderer.display();
-                      } else {
-                          Threading.invoke(true, displayOnEDTAction, getTreeLock());
-                      }
-                  } while ( !tileRenderer.eot() );
-                  if( DEBUG ) {
-                      System.err.println("AWT print.1: "+printAWTTiles);
-                  }
-              } finally {
-                  tileRenderer.reset();
-                  printAWTTiles.resetGraphics2D();
-              }
-          }
-      } catch (final NoninvertibleTransformException nte) {
-          System.err.println("Caught: Inversion failed of: "+g2d.getTransform());
-          nte.printStackTrace();
-      }
-      if( DEBUG ) {
-          System.err.println("AWT print.X: "+printAWTTiles);
-      }
-  }
-
-  @Override
-  public void addGLEventListener(final GLEventListener listener) {
-    helper.addGLEventListener(listener);
-  }
-
-  @Override
-  public void addGLEventListener(final int index, final GLEventListener listener) throws IndexOutOfBoundsException {
-    helper.addGLEventListener(index, listener);
-  }
-
-  @Override
-  public int getGLEventListenerCount() {
-      return helper.getGLEventListenerCount();
-  }
-
-  @Override
-  public GLEventListener getGLEventListener(final int index) throws IndexOutOfBoundsException {
-      return helper.getGLEventListener(index);
-  }
-
-  @Override
-  public boolean areAllGLEventListenerInitialized() {
-     return helper.areAllGLEventListenerInitialized();
-  }
-
-  @Override
-  public boolean getGLEventListenerInitState(final GLEventListener listener) {
-      return helper.getGLEventListenerInitState(listener);
-  }
-
-  @Override
-  public void setGLEventListenerInitState(final GLEventListener listener, final boolean initialized) {
-      helper.setGLEventListenerInitState(listener, initialized);
-  }
-
-  @Override
-  public GLEventListener disposeGLEventListener(final GLEventListener listener, final boolean remove) {
-    final DisposeGLEventListenerAction r = new DisposeGLEventListenerAction(listener, remove);
-    Threading.invoke(true, r, getTreeLock());
-    return r.listener;
-  }
-
-  @Override
-  public GLEventListener removeGLEventListener(final GLEventListener listener) {
-    return helper.removeGLEventListener(listener);
-  }
-
-  @Override
-  public void setAnimator(final GLAnimatorControl animatorControl) {
-    helper.setAnimator(animatorControl);
-  }
-
-  @Override
-  public GLAnimatorControl getAnimator() {
-    return helper.getAnimator();
-  }
-
-  @Override
-  public final Thread setExclusiveContextThread(final Thread t) throws GLException {
-      return helper.setExclusiveContextThread(t, context);
-  }
-
-  @Override
-  public final Thread getExclusiveContextThread() {
-      return helper.getExclusiveContextThread();
-  }
-
-  @Override
-  public boolean invoke(final boolean wait, final GLRunnable glRunnable) throws IllegalStateException {
-    return helper.invoke(this, wait, glRunnable);
-  }
-
-  @Override
-  public boolean invoke(final boolean wait, final List<GLRunnable> glRunnables) throws IllegalStateException {
-    return helper.invoke(this, wait, glRunnables);
-  }
-
-  @Override
-  public void flushGLRunnables() {
-      helper.flushGLRunnables();
-  }
-
-  @Override
-  public GLContext setContext(final GLContext newCtx, final boolean destroyPrevCtx) {
-      final RecursiveLock _lock = lock;
-      _lock.lock();
-      try {
-          final GLContext oldCtx = context;
-          GLDrawableHelper.switchContext(drawable, oldCtx, destroyPrevCtx, newCtx, additionalCtxCreationFlags);
-          context=(GLContextImpl)newCtx;
-          return oldCtx;
-      } finally {
-          _lock.unlock();
-      }
-  }
-
-  @Override
-  public final GLDrawable getDelegatedDrawable() {
-    return drawable;
-  }
-
-  @Override
-  public GLContext getContext() {
-    return context;
-  }
-
-  @Override
-  public GL getGL() {
-    if( Beans.isDesignTime() ) {
-      return null;
-    }
-    final GLContext _context = context;
-    return (_context == null) ? null : _context.getGL();
-  }
-
-  @Override
-  public GL setGL(final GL gl) {
-    final GLContext _context = context;
-    if (_context != null) {
-      _context.setGL(gl);
-      return gl;
-    }
-    return null;
-  }
-
-
-  @Override
-  public void setAutoSwapBufferMode(final boolean onOrOff) {
-    helper.setAutoSwapBufferMode(onOrOff);
-  }
-
-  @Override
-  public boolean getAutoSwapBufferMode() {
-    return helper.getAutoSwapBufferMode();
-  }
-
-  @Override
-  public void swapBuffers() {
-    Threading.invoke(true, swapBuffersOnEDTAction, getTreeLock());
-  }
-
-  @Override
-  public void setContextCreationFlags(final int flags) {
-    additionalCtxCreationFlags = flags;
-    final GLContext _context = context;
-    if(null != _context) {
-      _context.setContextCreationFlags(additionalCtxCreationFlags);
-    }
-  }
-
-  @Override
-  public int getContextCreationFlags() {
-    return additionalCtxCreationFlags;
-  }
-
-  @Override
-  public GLProfile getGLProfile() {
-    return capsReqUser.getGLProfile();
-  }
-
-  @Override
-  public GLCapabilitiesImmutable getChosenGLCapabilities() {
-    if( Beans.isDesignTime() ) {
-        return capsReqUser;
-    } else if( null == awtConfig ) {
-        throw new GLException("No AWTGraphicsConfiguration: "+this);
-    }
-    return (GLCapabilitiesImmutable)awtConfig.getChosenCapabilities();
-  }
-
-  @Override
-  public GLCapabilitiesImmutable getRequestedGLCapabilities() {
-    if( null == awtConfig ) {
-        return capsReqUser;
-    }
-    return (GLCapabilitiesImmutable)awtConfig.getRequestedCapabilities();
-  }
-
-  @Override
-  public int getSurfaceWidth() {
-      return SurfaceScaleUtils.scale(getWidth(), hasPixelScale[0]);
-  }
-
-  @Override
-  public int getSurfaceHeight() {
-      return SurfaceScaleUtils.scale(getHeight(), hasPixelScale[1]);
-  }
-
-  @Override
-  public boolean isGLOriented() {
-    final GLDrawable _drawable = drawable;
-    return null != _drawable ? _drawable.isGLOriented() : true;
-  }
-
-  @Override
-  public NativeSurface getNativeSurface() {
-    final GLDrawable _drawable = drawable;
-    return (null != _drawable) ? _drawable.getNativeSurface() : null;
-  }
-
-  @Override
-  public long getHandle() {
-    final GLDrawable _drawable = drawable;
-    return (null != _drawable) ? _drawable.getHandle() : 0;
-  }
-
-  @Override
-  public GLDrawableFactory getFactory() {
-    final GLDrawable _drawable = drawable;
-    return (null != _drawable) ? _drawable.getFactory() : null;
-  }
-
-  @Override
-  public String toString() {
-    final GLDrawable _drawable = drawable;
-    final int dw = (null!=_drawable) ? _drawable.getSurfaceWidth() : -1;
-    final int dh = (null!=_drawable) ? _drawable.getSurfaceHeight() : -1;
-
-    return "AWT-GLCanvas[Realized "+isRealized()+
-                          ",\n\t"+((null!=_drawable)?_drawable.getClass().getName():"null-drawable")+
-                          ",\n\tFactory   "+getFactory()+
-                          ",\n\thandle    0x"+Long.toHexString(getHandle())+
-                          ",\n\tDrawable size "+dw+"x"+dh+" surface["+getSurfaceWidth()+"x"+getSurfaceHeight()+"]"+
-                          ",\n\tAWT[pos "+getX()+"/"+getY()+", size "+getWidth()+"x"+getHeight()+
-                          ",\n\tvisible "+isVisible()+", displayable "+isDisplayable()+", showing "+isShowing+
-                          ",\n\t"+awtConfig+"]]";
-  }
-
-  //----------------------------------------------------------------------
-  // Internals only below this point
-  //
-
-  private final String getPixelScaleStr() { return "["+hasPixelScale[0]+", "+hasPixelScale[1]+"]"; }
-
-  private final Runnable destroyOnEDTAction = new Runnable() {
-    @Override
-    public void run() {
-        final RecursiveLock _lock = lock;
-        _lock.lock();
-        try {
-            final GLAnimatorControl animator =  getAnimator();
-
-            if(DEBUG) {
-                System.err.println(getThreadName()+": Info: destroyOnEDTAction() - START, hasContext " +
-                        (null!=context) + ", hasDrawable " + (null!=drawable)+", "+animator);
-                // Thread.dumpStack();
-            }
-
-            final boolean animatorPaused;
-            if(null!=animator) {
-                // can't remove us from animator for recreational addNotify()
-                animatorPaused = animator.pause();
-            } else {
-                animatorPaused = false;
-            }
-
-            GLException exceptionOnDisposeGL = null;
-
-            // OLS will be detached by disposeGL's context destruction below
-            if( null != context ) {
-                if( context.isCreated() ) {
-                    try {
-                        helper.disposeGL(GLCanvas.this, context, true);
-                        if(DEBUG) {
-                            System.err.println(getThreadName()+": destroyOnEDTAction() - post ctx: "+context);
-                        }
-                    } catch (final GLException gle) {
-                        exceptionOnDisposeGL = gle;
-                    }
-                }
-                context = null;
-            }
-
-            Throwable exceptionOnUnrealize = null;
-            if( null != drawable ) {
-                try {
-                    drawable.setRealized(false);
-                    if(DEBUG) {
-                        System.err.println(getThreadName()+": destroyOnEDTAction() - post drawable: "+drawable);
-                    }
-                } catch( final Throwable re ) {
-                    exceptionOnUnrealize = re;
-                }
-                drawable = null;
-            }
-
-            if(animatorPaused) {
-                animator.resume();
-            }
-
-            // throw exception in order of occurrence ..
-            if( null != exceptionOnDisposeGL ) {
-                throw exceptionOnDisposeGL;
-            }
-            if( null != exceptionOnUnrealize ) {
-                throw GLException.newGLException(exceptionOnUnrealize);
-            }
-
-            if(DEBUG) {
-                System.err.println(getThreadName()+": dispose() - END, animator "+animator);
-            }
-
-        } finally {
-            _lock.unlock();
-        }
-    }
-  };
-
-  /**
-   * Disposes the JAWTWindow and AbstractGraphicsDevice within EDT,
-   * since resources created (X11: Display), must be destroyed in the same thread, where they have been created.
-   * <p>
-   * The drawable and context handle are null'ed as well, assuming {@link #destroy()} has been called already.
-   * </p>
-   *
-   * @see #chooseGraphicsConfiguration(com.jogamp.opengl.GLCapabilitiesImmutable, com.jogamp.opengl.GLCapabilitiesImmutable, com.jogamp.opengl.GLCapabilitiesChooser, java.awt.GraphicsDevice)
-   */
-  private final Runnable disposeJAWTWindowAndAWTDeviceOnEDT = new Runnable() {
-    @Override
-    public void run() {
-        context=null;
-        drawable=null;
-
-        if( null != jawtWindow ) {
-            jawtWindow.destroy();
-            if(DEBUG) {
-                System.err.println(getThreadName()+": GLCanvas.disposeJAWTWindowAndAWTDeviceOnEDT(): post JAWTWindow: "+jawtWindow);
-            }
-            jawtWindow=null;
-        }
-        hasPixelScale[0] = ScalableSurface.IDENTITY_PIXELSCALE;
-        hasPixelScale[1] = ScalableSurface.IDENTITY_PIXELSCALE;
-        minPixelScale[0] = ScalableSurface.IDENTITY_PIXELSCALE;
-        minPixelScale[1] = ScalableSurface.IDENTITY_PIXELSCALE;
-        maxPixelScale[0] = ScalableSurface.IDENTITY_PIXELSCALE;
-        maxPixelScale[1] = ScalableSurface.IDENTITY_PIXELSCALE;
-
-        if(null != awtConfig) {
-            final AbstractGraphicsConfiguration aconfig = awtConfig.getNativeGraphicsConfiguration();
-            final AbstractGraphicsDevice adevice = aconfig.getScreen().getDevice();
-            final String adeviceMsg;
-            if(DEBUG) {
-                adeviceMsg = adevice.toString();
-            } else {
-                adeviceMsg = null;
-            }
-            final boolean closed = adevice.close();
-            if(DEBUG) {
-                System.err.println(getThreadName()+": GLCanvas.disposeJAWTWindowAndAWTDeviceOnEDT(): post GraphicsDevice: "+adeviceMsg+", result: "+closed);
-            }
-        }
-        awtConfig=null;
-    }
-  };
-
-  private final Runnable initAction = new Runnable() {
-    @Override
-    public void run() {
-      helper.init(GLCanvas.this, !sendReshape);
-    }
-  };
-
-  private final Runnable displayAction = new Runnable() {
-    @Override
-    public void run() {
-      if (sendReshape) {
-        if(DEBUG) {
-            System.err.println(getThreadName()+": Reshape: "+getSurfaceWidth()+"x"+getSurfaceHeight());
-        }
-        // Note: we ignore the given x and y within the parent component
-        // since we are drawing directly into this heavyweight component.
-        helper.reshape(GLCanvas.this, 0, 0, getSurfaceWidth(), getSurfaceHeight());
-        sendReshape = false;
-      }
-
-      helper.display(GLCanvas.this);
-    }
-  };
-
-  private final Runnable displayOnEDTAction = new Runnable() {
-    @Override
-    public void run() {
-        final RecursiveLock _lock = lock;
-        _lock.lock();
-        try {
-            if( null != drawable && drawable.isRealized() ) {
-                if( GLCanvas.this.updatePixelScale() ) {
-                    GLCanvas.this.reshapeImpl(getWidth(), getHeight());
-                }
-                helper.invokeGL(drawable, context, displayAction, initAction);
-            }
-        } finally {
-            _lock.unlock();
-        }
-    }
-  };
-
-  private final Runnable swapBuffersOnEDTAction = new Runnable() {
-    @Override
-    public void run() {
-        final RecursiveLock _lock = lock;
-        _lock.lock();
-        try {
-            if( null != drawable && drawable.isRealized() ) {
-                drawable.swapBuffers();
-            }
-        } finally {
-            _lock.unlock();
-        }
-    }
-  };
-
-  private class DisposeGLEventListenerAction implements Runnable {
-    GLEventListener listener;
-    private final boolean remove;
-    private DisposeGLEventListenerAction(final GLEventListener listener, final boolean remove) {
-        this.listener = listener;
-        this.remove = remove;
-    }
-
-    @Override
-    public void run() {
-        final RecursiveLock _lock = lock;
-        _lock.lock();
-        try {
-            listener = helper.disposeGLEventListener(GLCanvas.this, drawable, context, listener, remove);
-        } finally {
-            _lock.unlock();
-        }
-    }
-  };
-
-  // Disables the AWT's erasing of this Canvas's background on Windows
-  // in Java SE 6. This internal API is not available in previous
-  // releases, but the system property
-  // -Dsun.awt.noerasebackground=true can be specified to get similar
-  // results globally in previous releases.
-  private static boolean disableBackgroundEraseInitialized;
-  private static Method  disableBackgroundEraseMethod;
-  private void disableBackgroundErase() {
-    if (!disableBackgroundEraseInitialized) {
-      try {
-        AccessController.doPrivileged(new PrivilegedAction<Object>() {
-            @Override
-            public Object run() {
-              try {
-                Class<?> clazz = getToolkit().getClass();
-                while (clazz != null && disableBackgroundEraseMethod == null) {
-                  try {
-                    disableBackgroundEraseMethod =
-                      clazz.getDeclaredMethod("disableBackgroundErase",
-                                              new Class[] { Canvas.class });
-                    disableBackgroundEraseMethod.setAccessible(true);
-                  } catch (final Exception e) {
-                    clazz = clazz.getSuperclass();
-                  }
-                }
-              } catch (final Exception e) {
-              }
-              return null;
-            }
-          });
-      } catch (final Exception e) {
-      }
-      disableBackgroundEraseInitialized = true;
-      if(DEBUG) {
-        System.err.println(getThreadName()+": GLCanvas: TK disableBackgroundErase method found: "+
-                (null!=disableBackgroundEraseMethod));
-      }
-    }
-    if (disableBackgroundEraseMethod != null) {
-      Throwable t=null;
-      try {
-        disableBackgroundEraseMethod.invoke(getToolkit(), new Object[] { this });
-      } catch (final Exception e) {
-        t = e;
-      }
-      if(DEBUG) {
-        System.err.println(getThreadName()+": GLCanvas: TK disableBackgroundErase error: "+t);
-      }
-    }
-  }
-
-  /**
-   * Issues the GraphicsConfigurationFactory's choosing facility within EDT,
-   * since resources created (X11: Display), must be destroyed in the same thread, where they have been created.
-   *
-   * @param capsChosen
-   * @param capsRequested
-   * @param chooser
-   * @param device
-   * @return the chosen AWTGraphicsConfiguration
-   *
-   * @see #disposeJAWTWindowAndAWTDeviceOnEDT
-   */
-  private AWTGraphicsConfiguration chooseGraphicsConfiguration(final GLCapabilitiesImmutable capsChosen,
-                                                               final GLCapabilitiesImmutable capsRequested,
-                                                               final GLCapabilitiesChooser chooser,
-                                                               final GraphicsDevice device) {
-    // Make GLCanvas behave better in NetBeans GUI builder
-    if( Beans.isDesignTime() ) {
-      return null;
-    }
-
-    final AbstractGraphicsScreen aScreen = null != device ?
-            AWTGraphicsScreen.createScreenDevice(device, AbstractGraphicsDevice.DEFAULT_UNIT):
-            AWTGraphicsScreen.createDefault();
-    AWTGraphicsConfiguration config = null;
-
-    if( EventQueue.isDispatchThread() || Thread.holdsLock(getTreeLock()) ) {
-        config = (AWTGraphicsConfiguration)
-                GraphicsConfigurationFactory.getFactory(AWTGraphicsDevice.class, GLCapabilitiesImmutable.class).chooseGraphicsConfiguration(capsChosen,
-                                                                                                             capsRequested,
-                                                                                                             chooser, aScreen, VisualIDHolder.VID_UNDEFINED);
-    } else {
-        try {
-            final ArrayList<AWTGraphicsConfiguration> bucket = new ArrayList<AWTGraphicsConfiguration>(1);
-            EventQueue.invokeAndWait(new Runnable() {
-                @Override
-                public void run() {
-                    final AWTGraphicsConfiguration c = (AWTGraphicsConfiguration)
-                            GraphicsConfigurationFactory.getFactory(AWTGraphicsDevice.class, GLCapabilitiesImmutable.class).chooseGraphicsConfiguration(capsChosen,
-                                                                                                                         capsRequested,
-                                                                                                                         chooser, aScreen, VisualIDHolder.VID_UNDEFINED);
-                    bucket.add(c);
-                }
-            });
-            config = ( bucket.size() > 0 ) ? bucket.get(0) : null ;
-        } catch (final InvocationTargetException e) {
-            throw new GLException(e.getTargetException());
-        } catch (final InterruptedException e) {
-            throw new GLException(e);
-        }
-    }
-
-    if ( null == config ) {
-      throw new GLException("Error: Couldn't fetch AWTGraphicsConfiguration");
-    }
-
-    return config;
-  }
-
-  protected static String getThreadName() { return Thread.currentThread().getName(); }
-
-  /**
-   * A most simple JOGL AWT test entry
-   */
-  public static void main(final String args[]) {
-    System.err.println(VersionUtil.getPlatformInfo());
-    System.err.println(GlueGenVersion.getInstance());
-    // System.err.println(NativeWindowVersion.getInstance());
-    System.err.println(JoglVersion.getInstance());
-
-    System.err.println(JoglVersion.getDefaultOpenGLInfo(null, null, true).toString());
-
-    final GLCapabilitiesImmutable caps = new GLCapabilities( GLProfile.getDefault(GLProfile.getDefaultDevice()) );
-    final Frame frame = new Frame("JOGL AWT Test");
-
-    final GLCanvas glCanvas = new GLCanvas(caps);
-    frame.add(glCanvas);
-    frame.setSize(128, 128);
-
-    glCanvas.addGLEventListener(new GLEventListener() {
-        @Override
-        public void init(final GLAutoDrawable drawable) {
-            final GL gl = drawable.getGL();
-            System.err.println(JoglVersion.getGLInfo(gl, null));
-        }
-        @Override
-        public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) { }
-        @Override
-        public void display(final GLAutoDrawable drawable) { }
-        @Override
-        public void dispose(final GLAutoDrawable drawable) { }
-    });
-
-    try {
-        javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
-            @Override
-            public void run() {
-                frame.setVisible(true);
-            }});
-    } catch (final Throwable t) {
-        t.printStackTrace();
-    }
-    glCanvas.display();
-    try {
-        javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
-            @Override
-            public void run() {
-                frame.dispose();
-            }});
-    } catch (final Throwable t) {
-        t.printStackTrace();
-    }
-  }
-
-}
diff --git a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java b/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
deleted file mode 100644
index 91b2f5e0c..000000000
--- a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
+++ /dev/null
@@ -1,2689 +0,0 @@
-/*
- * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
- * Copyright (c) 2010 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:
- *
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- * - Redistribution 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.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- *
- * Sun gratefully acknowledges that this software was originally authored
- * and developed by Kenneth Bradley Russell and Christopher John Kline.
- */
-
-package com.jogamp.opengl.awt;
-
-import java.awt.Color;
-import java.awt.EventQueue;
-import java.awt.FontMetrics;
-import java.awt.Graphics;
-import java.awt.Graphics2D;
-import java.awt.GraphicsConfiguration;
-import java.awt.GraphicsEnvironment;
-import java.awt.Rectangle;
-import java.awt.event.HierarchyEvent;
-import java.awt.event.HierarchyListener;
-import java.awt.geom.NoninvertibleTransformException;
-import java.awt.geom.Rectangle2D;
-import java.awt.image.BufferedImage;
-import java.awt.image.DataBufferInt;
-import java.beans.Beans;
-import java.nio.IntBuffer;
-import java.util.List;
-
-import com.jogamp.nativewindow.AbstractGraphicsDevice;
-import com.jogamp.nativewindow.NativeSurface;
-import com.jogamp.nativewindow.ScalableSurface;
-import com.jogamp.nativewindow.SurfaceUpdatedListener;
-import com.jogamp.nativewindow.WindowClosingProtocol;
-import com.jogamp.nativewindow.util.PixelFormat;
-import com.jogamp.opengl.GL;
-import com.jogamp.opengl.GL2;
-import com.jogamp.opengl.GL2ES3;
-import com.jogamp.opengl.GL2GL3;
-import com.jogamp.opengl.GLAnimatorControl;
-import com.jogamp.opengl.GLAutoDrawable;
-import com.jogamp.opengl.GLCapabilities;
-import com.jogamp.opengl.GLCapabilitiesChooser;
-import com.jogamp.opengl.GLCapabilitiesImmutable;
-import com.jogamp.opengl.GLContext;
-import com.jogamp.opengl.GLDrawable;
-import com.jogamp.opengl.GLDrawableFactory;
-import com.jogamp.opengl.GLEventListener;
-import com.jogamp.opengl.GLException;
-import com.jogamp.opengl.GLFBODrawable;
-import com.jogamp.opengl.GLOffscreenAutoDrawable;
-import com.jogamp.opengl.GLProfile;
-import com.jogamp.opengl.GLRunnable;
-import com.jogamp.opengl.GLSharedContextSetter;
-import com.jogamp.opengl.Threading;
-import javax.swing.JPanel;
-
-import jogamp.nativewindow.SurfaceScaleUtils;
-import jogamp.nativewindow.WrappedSurface;
-import jogamp.nativewindow.jawt.JAWTUtil;
-import jogamp.opengl.Debug;
-import jogamp.opengl.GLContextImpl;
-import jogamp.opengl.GLDrawableFactoryImpl;
-import jogamp.opengl.GLDrawableHelper;
-import jogamp.opengl.GLDrawableImpl;
-import jogamp.opengl.awt.AWTTilePainter;
-import jogamp.opengl.awt.Java2D;
-import jogamp.opengl.util.glsl.GLSLTextureRaster;
-
-import com.jogamp.common.util.PropertyAccess;
-import com.jogamp.common.util.awt.AWTEDTExecutor;
-import com.jogamp.common.util.locks.LockFactory;
-import com.jogamp.common.util.locks.RecursiveLock;
-import com.jogamp.nativewindow.awt.AWTPrintLifecycle;
-import com.jogamp.nativewindow.awt.AWTWindowClosingProtocol;
-import com.jogamp.opengl.FBObject;
-import com.jogamp.opengl.GLRendererQuirks;
-import com.jogamp.opengl.util.GLPixelBuffer.GLPixelAttributes;
-import com.jogamp.opengl.util.GLPixelBuffer.SingletonGLPixelBufferProvider;
-import com.jogamp.opengl.util.GLDrawableUtil;
-import com.jogamp.opengl.util.GLPixelStorageModes;
-import com.jogamp.opengl.util.TileRenderer;
-import com.jogamp.opengl.util.awt.AWTGLPixelBuffer;
-import com.jogamp.opengl.util.awt.AWTGLPixelBuffer.AWTGLPixelBufferProvider;
-import com.jogamp.opengl.util.awt.AWTGLPixelBuffer.SingleAWTGLPixelBufferProvider;
-import com.jogamp.opengl.util.texture.TextureState;
-
-/** A lightweight Swing component which provides OpenGL rendering
-    support. Provided for compatibility with Swing user interfaces
-    when adding a heavyweight doesn't work either because of
-    Z-ordering or LayoutManager problems.
-    <p>
-    The GLJPanel can be made transparent by creating it with a
-    GLCapabilities object with alpha bits specified and calling {@link
-    #setOpaque}(false). Pixels with resulting OpenGL alpha values less
-    than 1.0 will be overlaid on any underlying Swing rendering.
-    </p>
-    <p>
-    This component attempts to use hardware-accelerated rendering via FBO or pbuffers and
-    falls back on to software rendering if none of the former are available
-    using {@link GLDrawableFactory#createOffscreenDrawable(AbstractGraphicsDevice, GLCapabilitiesImmutable, GLCapabilitiesChooser, int, int) GLDrawableFactory.createOffscreenDrawable(..)}.<br/>
-    </p>
-    <p>
-    <a name="verticalFlip">A vertical-flip is required</a>, if the drawable {@link #isGLOriented()} and {@link #setSkipGLOrientationVerticalFlip(boolean) vertical flip is not skipped}.<br>
-    In this case this component performs the required vertical flip to bring the content from OpenGL's orientation into AWT's orientation.<br>
-    In case <a href="#fboGLSLVerticalFlip">GLSL based vertical-flip</a> is not available,
-    the CPU intensive {@link System#arraycopy(Object, int, Object, int, int) System.arraycopy(..)} is used line by line.
-    See details about <a href="#fboGLSLVerticalFlip">FBO and GLSL vertical flipping</a>.
-    </p>
-    <p>
-    For performance reasons, as well as for <a href="#bug842">GL state sideeffects</a>,
-    <b>{@link #setSkipGLOrientationVerticalFlip(boolean) skipping vertical flip} is highly recommended</b>!
-    </p>
-    <p>
-    The OpenGL path is concluded by copying the rendered pixels an {@link BufferedImage} via {@link GL#glReadPixels(int, int, int, int, int, int, java.nio.Buffer) glReadPixels(..)}
-    for later Java2D composition.
-    </p>
-    <p>
-    Finally the Java2D compositioning takes place via via {@link Graphics#drawImage(java.awt.Image, int, int, int, int, java.awt.image.ImageObserver) Graphics.drawImage(...)}
-    on the prepared {@link BufferedImage} as described above.
-    </p>
-    <P>
- *  Please read <a href="GLCanvas.html#java2dgl">Java2D OpenGL Remarks</a>.
- *  </P>
- *
-    <a name="fboGLSLVerticalFlip"><h5>FBO / GLSL Vertical Flip</h5></a>
-    If <a href="#verticalFlip">vertical flip is required</a>,
-    FBO is used, GLSL is available and {@link #setSkipGLOrientationVerticalFlip(boolean) vertical flip is not skipped}, a fragment shader is utilized
-    to flip the FBO texture vertically. This hardware-accelerated step can be disabled via system property <code>jogl.gljpanel.noglsl</code>.
-    <p>
-    The FBO / GLSL code path uses one texture-unit and binds the FBO texture to it's active texture-target,
-    see {@link #setTextureUnit(int)} and {@link #getTextureUnit()}.
-    </p>
-    <p>
-    The active and dedicated texture-unit's {@link GL#GL_TEXTURE_2D} state is preserved via {@link TextureState}.
-    See also {@link Texture#textureCallOrder Order of Texture Commands}.
-    </p>
-    <p>
-    The current gl-viewport is preserved.
-    </p>
-    <p>
-    <a name="bug842"><i>Warning (Bug 842)</i></a>: Certain GL states other than viewport and texture (see above)
-    influencing rendering, will also influence the GLSL vertical flip, e.g. {@link GL#glFrontFace(int) glFrontFace}({@link GL#GL_CCW}).
-    It is recommended to reset those states to default when leaving the {@link GLEventListener#display(GLAutoDrawable)} method!
-    We may change this behavior in the future, i.e. preserve all influencing states.
-    </p>
-    <p>
-    <a name="contextSharing"><h5>OpenGL Context Sharing</h5></a>
-    To share a {@link GLContext} see the following note in the documentation overview:
-    <a href="../../../../overview-summary.html#SHARING">context sharing</a>
-    as well as {@link GLSharedContextSetter}.
-    </p>
-*/
-
-@SuppressWarnings("serial")
-public class GLJPanel extends JPanel implements AWTGLAutoDrawable, WindowClosingProtocol, AWTPrintLifecycle, GLSharedContextSetter, ScalableSurface {
-  private static final boolean DEBUG;
-  private static final boolean DEBUG_FRAMES;
-  private static final boolean DEBUG_VIEWPORT;
-  private static final boolean USE_GLSL_TEXTURE_RASTERIZER;
-  private static final boolean SKIP_VERTICAL_FLIP_DEFAULT;
-
-  /** Indicates whether the Java 2D OpenGL pipeline is requested by user. */
-  private static final boolean java2dOGLEnabledByProp;
-
-  /** Indicates whether the Java 2D OpenGL pipeline is enabled, resource-compatible and requested by user. */
-  private static final boolean useJava2DGLPipeline;
-
-  /** Indicates whether the Java 2D OpenGL pipeline's usage is error free. */
-  private static boolean java2DGLPipelineOK;
-
-  static {
-      Debug.initSingleton();
-      DEBUG = Debug.debug("GLJPanel");
-      DEBUG_FRAMES = PropertyAccess.isPropertyDefined("jogl.debug.GLJPanel.Frames", true);
-      DEBUG_VIEWPORT = PropertyAccess.isPropertyDefined("jogl.debug.GLJPanel.Viewport", true);
-      USE_GLSL_TEXTURE_RASTERIZER = !PropertyAccess.isPropertyDefined("jogl.gljpanel.noglsl", true);
-      SKIP_VERTICAL_FLIP_DEFAULT = PropertyAccess.isPropertyDefined("jogl.gljpanel.noverticalflip", true);
-      boolean enabled = PropertyAccess.getBooleanProperty("sun.java2d.opengl", false);
-      java2dOGLEnabledByProp = enabled && !PropertyAccess.isPropertyDefined("jogl.gljpanel.noogl", true);
-
-      enabled = false;
-      if( java2dOGLEnabledByProp ) {
-          // Force eager initialization of part of the Java2D class since
-          // otherwise it's likely it will try to be initialized while on
-          // the Queue Flusher Thread, which is not allowed
-          if (Java2D.isOGLPipelineResourceCompatible() && Java2D.isFBOEnabled()) {
-              if( null != Java2D.getShareContext(GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice()) ) {
-                  enabled = true;
-              }
-          }
-      }
-      useJava2DGLPipeline = enabled;
-      java2DGLPipelineOK = enabled;
-      if( DEBUG ) {
-          System.err.println("GLJPanel: DEBUG_VIEWPORT "+DEBUG_VIEWPORT);
-          System.err.println("GLJPanel: USE_GLSL_TEXTURE_RASTERIZER "+USE_GLSL_TEXTURE_RASTERIZER);
-          System.err.println("GLJPanel: SKIP_VERTICAL_FLIP_DEFAULT "+SKIP_VERTICAL_FLIP_DEFAULT);
-          System.err.println("GLJPanel: java2dOGLEnabledByProp "+java2dOGLEnabledByProp);
-          System.err.println("GLJPanel: useJava2DGLPipeline "+useJava2DGLPipeline);
-          System.err.println("GLJPanel: java2DGLPipelineOK "+java2DGLPipelineOK);
-      }
-  }
-
-  private static SingleAWTGLPixelBufferProvider singleAWTGLPixelBufferProvider = null;
-  private static synchronized SingleAWTGLPixelBufferProvider getSingleAWTGLPixelBufferProvider() {
-      if( null == singleAWTGLPixelBufferProvider ) {
-          singleAWTGLPixelBufferProvider = new SingleAWTGLPixelBufferProvider( true /* allowRowStride */ );
-      }
-      return singleAWTGLPixelBufferProvider;
-  }
-
-  private final RecursiveLock lock = LockFactory.createRecursiveLock();
-
-  private final GLDrawableHelper helper;
-  private boolean autoSwapBufferMode;
-
-  private volatile boolean isInitialized;
-
-  //
-  // Data used for either pbuffers or pixmap-based offscreen surfaces
-  //
-  private AWTGLPixelBufferProvider customPixelBufferProvider = null;
-  /** Requested single buffered offscreen caps */
-  private volatile GLCapabilitiesImmutable reqOffscreenCaps;
-  private volatile GLDrawableFactoryImpl factory;
-  private final GLCapabilitiesChooser chooser;
-  private int additionalCtxCreationFlags = 0;
-
-  // Lazy reshape notification: reshapeWidth -> panelWidth -> backend.width
-  private boolean handleReshape = false;
-  private boolean sendReshape = true;
-
-  private final float[] minPixelScale = new float[] { ScalableSurface.IDENTITY_PIXELSCALE, ScalableSurface.IDENTITY_PIXELSCALE };
-  private final float[] maxPixelScale = new float[] { ScalableSurface.IDENTITY_PIXELSCALE, ScalableSurface.IDENTITY_PIXELSCALE };
-  private final float[] hasPixelScale = new float[] { ScalableSurface.IDENTITY_PIXELSCALE, ScalableSurface.IDENTITY_PIXELSCALE };
-  private final float[] reqPixelScale = new float[] { ScalableSurface.AUTOMAX_PIXELSCALE, ScalableSurface.AUTOMAX_PIXELSCALE };
-
-  /** For handling reshape events lazily: reshapeWidth -> panelWidth -> backend.width in pixel units (scaled) */
-  private int reshapeWidth;
-  /** For handling reshape events lazily: reshapeHeight -> panelHeight -> backend.height in pixel units (scaled) */
-  private int reshapeHeight;
-
-  /** Scaled pixel width of the actual GLJPanel: reshapeWidth -> panelWidth -> backend.width */
-  private int panelWidth   = 0;
-  /** Scaled pixel height of the actual GLJPanel: reshapeHeight -> panelHeight -> backend.height */
-  private int panelHeight  = 0;
-
-  // These are always set to (0, 0) except when the Java2D / OpenGL
-  // pipeline is active
-  private int viewportX;
-  private int viewportY;
-
-  private int requestedTextureUnit = 0; // default
-
-  // The backend in use
-  private volatile Backend backend;
-
-  private boolean skipGLOrientationVerticalFlip = SKIP_VERTICAL_FLIP_DEFAULT;
-
-  // Used by all backends either directly or indirectly to hook up callbacks
-  private final Updater updater = new Updater();
-
-  private boolean oglPipelineUsable() {
-      return null == customPixelBufferProvider &&  useJava2DGLPipeline && java2DGLPipelineOK;
-  }
-
-  private volatile boolean isShowing;
-  private final HierarchyListener hierarchyListener = new HierarchyListener() {
-      @Override
-      public void hierarchyChanged(final HierarchyEvent e) {
-          isShowing = GLJPanel.this.isShowing();
-      }
-  };
-
-  private final AWTWindowClosingProtocol awtWindowClosingProtocol =
-          new AWTWindowClosingProtocol(this, new Runnable() {
-                @Override
-                public void run() {
-                    GLJPanel.this.destroy();
-                }
-            }, null);
-
-  /** Creates a new GLJPanel component with a default set of OpenGL
-      capabilities and using the default OpenGL capabilities selection
-      mechanism.
-      <p>
-      See details about <a href="#contextSharing">OpenGL context sharing</a>.
-      </p>
-   * @throws GLException if no default profile is available for the default desktop device.
-   */
-  public GLJPanel() throws GLException {
-    this(null);
-  }
-
-  /** Creates a new GLJPanel component with the requested set of
-      OpenGL capabilities, using the default OpenGL capabilities
-      selection mechanism.
-      <p>
-      See details about <a href="#contextSharing">OpenGL context sharing</a>.
-      </p>
-   * @throws GLException if no GLCapabilities are given and no default profile is available for the default desktop device.
-   */
-  public GLJPanel(final GLCapabilitiesImmutable userCapsRequest) throws GLException {
-    this(userCapsRequest, null);
-  }
-
-  /** Creates a new GLJPanel component. The passed GLCapabilities
-      specifies the OpenGL capabilities for the component; if null, a
-      default set of capabilities is used. The GLCapabilitiesChooser
-      specifies the algorithm for selecting one of the available
-      GLCapabilities for the component; a DefaultGLCapabilitesChooser
-      is used if null is passed for this argument.
-      <p>
-      See details about <a href="#contextSharing">OpenGL context sharing</a>.
-      </p>
-    * @throws GLException if no GLCapabilities are given and no default profile is available for the default desktop device.
-  */
-  public GLJPanel(final GLCapabilitiesImmutable userCapsRequest, final GLCapabilitiesChooser chooser)
-          throws GLException
-  {
-    super();
-
-    // Works around problems on many vendors' cards; we don't need a
-    // back buffer for the offscreen surface anyway
-    {
-        GLCapabilities caps;
-        if (userCapsRequest != null) {
-            caps = (GLCapabilities) userCapsRequest.cloneMutable();
-        } else {
-            caps = new GLCapabilities(GLProfile.getDefault(GLProfile.getDefaultDevice()));
-        }
-        caps.setDoubleBuffered(false);
-        reqOffscreenCaps = caps;
-    }
-    this.factory = GLDrawableFactoryImpl.getFactoryImpl( reqOffscreenCaps.getGLProfile() ); // pre-fetch, reqOffscreenCaps may changed
-    this.chooser = chooser;
-
-    helper = new GLDrawableHelper();
-    autoSwapBufferMode = helper.getAutoSwapBufferMode();
-
-    this.setFocusable(true); // allow keyboard input!
-    this.addHierarchyListener(hierarchyListener);
-    this.isShowing = isShowing();
-  }
-
-  /**
-   * Attempts to initialize the backend, if not initialized yet.
-   * <p>
-   * If backend is already initialized method returns <code>true</code>.
-   * </p>
-   * <p>
-   * If <code>offthread</code> is <code>true</code>, initialization will kicked off
-   * on a <i>short lived</i> arbitrary thread and method returns immediately.<br/>
-   * If platform supports such <i>arbitrary thread</i> initialization method returns
-   * <code>true</code>, otherwise <code>false</code>.
-   * </p>
-   * <p>
-   * If <code>offthread</code> is <code>false</code>, initialization be performed
-   * on the current thread and method returns after initialization.<br/>
-   * Method returns <code>true</code> if initialization was successful, otherwise <code>false</code>.
-   * <p>
-   * @param offthread
-   */
-  public final boolean initializeBackend(final boolean offthread) {
-    if( offthread ) {
-        new Thread(getThreadName()+"-GLJPanel_Init") {
-            public void run() {
-              if( !isInitialized ) {
-                  initializeBackendImpl();
-              }
-            } }.start();
-        return true;
-    } else {
-        if( !isInitialized ) {
-            return initializeBackendImpl();
-        } else {
-            return true;
-        }
-    }
-  }
-
-  @Override
-  public final void setSharedContext(final GLContext sharedContext) throws IllegalStateException {
-      helper.setSharedContext(this.getContext(), sharedContext);
-  }
-
-  @Override
-  public final void setSharedAutoDrawable(final GLAutoDrawable sharedAutoDrawable) throws IllegalStateException {
-      helper.setSharedAutoDrawable(this, sharedAutoDrawable);
-  }
-
-  public AWTGLPixelBufferProvider getCustomPixelBufferProvider() { return customPixelBufferProvider; }
-
-  /**
-   * @param custom custom {@link AWTGLPixelBufferProvider}
-   * @throws IllegalArgumentException if <code>custom</code> is <code>null</code>
-   * @throws IllegalStateException if backend is already realized, i.e. this instanced already painted once.
-   */
-  public void setPixelBufferProvider(final AWTGLPixelBufferProvider custom) throws IllegalArgumentException, IllegalStateException {
-      if( null == custom ) {
-          throw new IllegalArgumentException("Null PixelBufferProvider");
-      }
-      if( null != backend ) {
-          throw new IllegalStateException("Backend already realized.");
-      }
-      customPixelBufferProvider = custom;
-  }
-
-  @Override
-  public final Object getUpstreamWidget() {
-    return this;
-  }
-
-  @Override
-  public final RecursiveLock getUpstreamLock() { return lock; }
-
-  @Override
-  public final boolean isThreadGLCapable() { return EventQueue.isDispatchThread(); }
-
-  @Override
-  public void display() {
-      if( isShowing || ( printActive && isVisible() ) ) {
-          if (EventQueue.isDispatchThread()) {
-              // Want display() to be synchronous, so call paintImmediately()
-              paintImmediatelyAction.run();
-          } else {
-              // Multithreaded redrawing of Swing components is not allowed,
-              // so do everything on the event dispatch thread
-              try {
-                  EventQueue.invokeAndWait(paintImmediatelyAction);
-              } catch (final Exception e) {
-                  throw new GLException(e);
-              }
-          }
-      }
-  }
-
-  protected void dispose(final Runnable post) {
-    if(DEBUG) {
-        System.err.println(getThreadName()+": GLJPanel.dispose() - start");
-        // Thread.dumpStack();
-    }
-
-    if (backend != null && backend.getContext() != null) {
-      final boolean animatorPaused;
-      final GLAnimatorControl animator =  getAnimator();
-      if(null!=animator) {
-        animatorPaused = animator.pause();
-      } else {
-        animatorPaused = false;
-      }
-
-      if(backend.getContext().isCreated()) {
-          Threading.invoke(true, disposeAction, getTreeLock());
-      }
-      if(null != backend) {
-          // not yet destroyed due to backend.isUsingOwnThreadManagment() == true
-          backend.destroy();
-          isInitialized = false;
-      }
-      if( null != post ) {
-          post.run();
-      }
-
-      if( animatorPaused ) {
-        animator.resume();
-      }
-    }
-
-    if(DEBUG) {
-        System.err.println(getThreadName()+": GLJPanel.dispose() - stop");
-    }
-  }
-
-  /**
-   * Just an alias for removeNotify
-   */
-  @Override
-  public void destroy() {
-      removeNotify();
-  }
-
-  /** Overridden to cause OpenGL rendering to be performed during
-      repaint cycles. Subclasses which override this method must call
-      super.paintComponent() in their paintComponent() method in order
-      to function properly. <P>
-
-      <DL><DD><CODE>paintComponent</CODE> in class <CODE>javax.swing.JComponent</CODE></DD></DL> */
-  @Override
-  protected void paintComponent(final Graphics g) {
-    if (Beans.isDesignTime()) {
-      // Make GLJPanel behave better in NetBeans GUI builder
-      g.setColor(Color.BLACK);
-      g.fillRect(0, 0, getWidth(), getHeight());
-      final FontMetrics fm = g.getFontMetrics();
-      String name = getName();
-      if (name == null) {
-        name = getClass().getName();
-        final int idx = name.lastIndexOf('.');
-        if (idx >= 0) {
-          name = name.substring(idx + 1);
-        }
-      }
-      final Rectangle2D bounds = fm.getStringBounds(name, g);
-      g.setColor(Color.WHITE);
-      g.drawString(name,
-                   (int) ((getWidth()  - bounds.getWidth())  / 2),
-                   (int) ((getHeight() + bounds.getHeight()) / 2));
-      return;
-    }
-
-    final RecursiveLock _lock = lock;
-    _lock.lock();
-    try {
-        if( !isInitialized ) {
-            initializeBackendImpl();
-        }
-
-        if (!isInitialized || printActive) {
-            return;
-        }
-
-        // NOTE: must do this when the context is not current as it may
-        // involve destroying the pbuffer (current context) and
-        // re-creating it -- tricky to do properly while the context is
-        // current
-        if( !printActive ) {
-            updatePixelScale(backend);
-            if ( handleReshape ) {
-                handleReshape = false;
-                sendReshape = handleReshape();
-            }
-
-            if( isShowing ) {
-                updater.setGraphics(g);
-                backend.doPaintComponent(g);
-            }
-        }
-    } finally {
-        _lock.unlock();
-    }
-  }
-
-  private final void updateWrappedSurfaceScale(final GLDrawable d) {
-      final NativeSurface s = d.getNativeSurface();
-      if( s instanceof WrappedSurface ) {
-          ((WrappedSurface)s).setSurfaceScale(hasPixelScale);
-      }
-  }
-
-  @Override
-  public final boolean setSurfaceScale(final float[] pixelScale) { // HiDPI support
-      System.arraycopy(pixelScale, 0, reqPixelScale, 0, 2);
-      final Backend b = backend;
-      if ( isInitialized && null != b && isShowing ) {
-          if( isShowing || ( printActive && isVisible() ) ) {
-              if (EventQueue.isDispatchThread()) {
-                  setSurfaceScaleAction.run();
-              } else {
-                  try {
-                      EventQueue.invokeAndWait(setSurfaceScaleAction);
-                  } catch (final Exception e) {
-                      throw new GLException(e);
-                  }
-              }
-          }
-          return true;
-      } else {
-          return false;
-      }
-  }
-  private final Runnable setSurfaceScaleAction = new Runnable() {
-    @Override
-    public void run() {
-        final Backend b = backend;
-        if( null != b && setSurfaceScaleImpl(b) ) {
-            if( !helper.isAnimatorAnimatingOnOtherThread() ) {
-                paintImmediatelyAction.run(); // display
-            }
-        }
-    }
-  };
-
-  private final boolean setSurfaceScaleImpl(final Backend b) {
-      if( SurfaceScaleUtils.setNewPixelScale(hasPixelScale, hasPixelScale, reqPixelScale, minPixelScale, maxPixelScale, DEBUG ? getClass().getSimpleName() : null) ) {
-          reshapeImpl(getWidth(), getHeight());
-          updateWrappedSurfaceScale(b.getDrawable());
-          return true;
-      }
-      return false;
-  }
-
-  private final boolean updatePixelScale(final Backend b) {
-      if( JAWTUtil.getPixelScale(getGraphicsConfiguration(), minPixelScale, maxPixelScale) ) {
-          return setSurfaceScaleImpl(b);
-      } else {
-          return false;
-      }
-  }
-
-  @Override
-  public final float[] getRequestedSurfaceScale(final float[] result) {
-      System.arraycopy(reqPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  @Override
-  public final float[] getCurrentSurfaceScale(final float[] result) {
-      System.arraycopy(hasPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  @Override
-  public float[] getMinimumSurfaceScale(final float[] result) {
-      System.arraycopy(minPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  @Override
-  public float[] getMaximumSurfaceScale(final float[] result) {
-      System.arraycopy(maxPixelScale, 0, result, 0, 2);
-      return result;
-  }
-
-  /** Overridden to track when this component is added to a container.
-      Subclasses which override this method must call
-      super.addNotify() in their addNotify() method in order to
-      function properly. <P>
-
-      <DL><DD><CODE>addNotify</CODE> in class <CODE>java.awt.Component</CODE></DD></DL> */
-  @Override
-  public void addNotify() {
-    super.addNotify();
-    awtWindowClosingProtocol.addClosingListener();
-
-    // HiDPI support
-    JAWTUtil.getPixelScale(getGraphicsConfiguration(), minPixelScale, maxPixelScale);
-    SurfaceScaleUtils.setNewPixelScale(hasPixelScale, hasPixelScale, reqPixelScale, minPixelScale, maxPixelScale, DEBUG ? getClass().getSimpleName() : null);
-
-    if (DEBUG) {
-        System.err.println(getThreadName()+": GLJPanel.addNotify()");
-    }
-  }
-
-  /** Overridden to track when this component is removed from a
-      container. Subclasses which override this method must call
-      super.removeNotify() in their removeNotify() method in order to
-      function properly. <P>
-
-      <DL><DD><CODE>removeNotify</CODE> in class <CODE>java.awt.Component</CODE></DD></DL> */
-  @Override
-  public void removeNotify() {
-    awtWindowClosingProtocol.removeClosingListener();
-
-    dispose(null);
-    hasPixelScale[0] = ScalableSurface.IDENTITY_PIXELSCALE;
-    hasPixelScale[1] = ScalableSurface.IDENTITY_PIXELSCALE;
-    minPixelScale[0] = ScalableSurface.IDENTITY_PIXELSCALE;
-    minPixelScale[1] = ScalableSurface.IDENTITY_PIXELSCALE;
-    maxPixelScale[0] = ScalableSurface.IDENTITY_PIXELSCALE;
-    maxPixelScale[1] = ScalableSurface.IDENTITY_PIXELSCALE;
-
-    super.removeNotify();
-  }
-
-  /** Overridden to cause {@link GLDrawableHelper#reshape} to be
-      called on all registered {@link GLEventListener}s. Subclasses
-      which override this method must call super.reshape() in
-      their reshape() method in order to function properly. <P>
-   *
-   * {@inheritDoc}
-   */
-  @SuppressWarnings("deprecation")
-  @Override
-  public void reshape(final int x, final int y, final int width, final int height) {
-    super.reshape(x, y, width, height);
-    reshapeImpl(width, height);
-  }
-
-  private void reshapeImpl(final int width, final int height) {
-    final int scaledWidth = SurfaceScaleUtils.scale(width, hasPixelScale[0]);
-    final int scaledHeight = SurfaceScaleUtils.scale(height, hasPixelScale[1]);
-    if( !printActive && ( handleReshape || scaledWidth != panelWidth || scaledHeight != panelHeight ) ) {
-        reshapeWidth = scaledWidth;
-        reshapeHeight = scaledHeight;
-        handleReshape = true;
-    }
-    if( DEBUG ) {
-        System.err.println(getThreadName()+": GLJPanel.reshape.0 "+this.getName()+" resize ["+(printActive?"printing":"paint")+
-                "] [ this "+getWidth()+"x"+getHeight()+", pixelScale "+getPixelScaleStr()+
-                ", panel "+panelWidth+"x"+panelHeight +
-                "] -> "+(handleReshape?"":"[skipped] ") + width+"x"+height+" * "+getPixelScaleStr()+
-                " -> "+scaledWidth+"x"+scaledHeight+", reshapeSize "+reshapeWidth+"x"+reshapeHeight);
-    }
-  }
-
-  private volatile boolean printActive = false;
-  private GLAnimatorControl printAnimator = null;
-  private GLAutoDrawable printGLAD = null;
-  private AWTTilePainter printAWTTiles = null;
-
-  @Override
-  public void setupPrint(final double scaleMatX, final double scaleMatY, final int numSamples, final int tileWidth, final int tileHeight) {
-      printActive = true;
-      if( DEBUG ) {
-          System.err.printf(getThreadName()+": GLJPanel.setupPrint: scale %f / %f, samples %d, tileSz %d x %d%n", scaleMatX, scaleMatY, numSamples, tileWidth, tileHeight);
-      }
-      final int componentCount = isOpaque() ? 3 : 4;
-      final TileRenderer printRenderer = new TileRenderer();
-      printAWTTiles = new AWTTilePainter(printRenderer, componentCount, scaleMatX, scaleMatY, numSamples, tileWidth, tileHeight, DEBUG);
-      AWTEDTExecutor.singleton.invoke(getTreeLock(), true /* allowOnNonEDT */, true /* wait */, setupPrintOnEDT);
-  }
-  private final Runnable setupPrintOnEDT = new Runnable() {
-      @Override
-      public void run() {
-          final RecursiveLock _lock = lock;
-          _lock.lock();
-          try {
-              if( !isInitialized ) {
-                  initializeBackendImpl();
-              }
-              if (!isInitialized) {
-                  if(DEBUG) {
-                      System.err.println(getThreadName()+": Info: GLJPanel setupPrint - skipped GL render, drawable not valid yet");
-                  }
-                  printActive = false;
-                  return; // not yet available ..
-              }
-              if( !isVisible() ) {
-                  if(DEBUG) {
-                      System.err.println(getThreadName()+": Info: GLJPanel setupPrint - skipped GL render, panel not visible");
-                  }
-                  printActive = false;
-                  return; // not yet available ..
-              }
-              sendReshape = false; // clear reshape flag
-              handleReshape = false; // ditto
-              printAnimator =  helper.getAnimator();
-              if( null != printAnimator ) {
-                  printAnimator.remove(GLJPanel.this);
-              }
-
-              printGLAD = GLJPanel.this; // default: re-use
-              final GLCapabilitiesImmutable gladCaps = getChosenGLCapabilities();
-              final int printNumSamples = printAWTTiles.getNumSamples(gladCaps);
-              GLDrawable printDrawable = printGLAD.getDelegatedDrawable();
-              final boolean reqNewGLADSamples = printNumSamples != gladCaps.getNumSamples();
-              final boolean reqNewGLADSize = printAWTTiles.customTileWidth != -1 && printAWTTiles.customTileWidth != printDrawable.getSurfaceWidth() ||
-                                             printAWTTiles.customTileHeight != -1 && printAWTTiles.customTileHeight != printDrawable.getSurfaceHeight();
-
-              final GLCapabilities newGLADCaps = (GLCapabilities)gladCaps.cloneMutable();
-              newGLADCaps.setDoubleBuffered(false);
-              newGLADCaps.setOnscreen(false);
-              if( printNumSamples != newGLADCaps.getNumSamples() ) {
-                  newGLADCaps.setSampleBuffers(0 < printNumSamples);
-                  newGLADCaps.setNumSamples(printNumSamples);
-              }
-              final boolean reqNewGLADSafe = GLDrawableUtil.isSwapGLContextSafe(getRequestedGLCapabilities(), gladCaps, newGLADCaps);
-
-              final boolean reqNewGLAD = ( reqNewGLADSamples || reqNewGLADSize ) && reqNewGLADSafe;
-
-              if( DEBUG ) {
-                  System.err.println("AWT print.setup: reqNewGLAD "+reqNewGLAD+"[ samples "+reqNewGLADSamples+", size "+reqNewGLADSize+", safe "+reqNewGLADSafe+"], "+
-                                     ", drawableSize "+printDrawable.getSurfaceWidth()+"x"+printDrawable.getSurfaceHeight()+
-                                     ", customTileSize "+printAWTTiles.customTileWidth+"x"+printAWTTiles.customTileHeight+
-                                     ", scaleMat "+printAWTTiles.scaleMatX+" x "+printAWTTiles.scaleMatY+
-                                     ", numSamples "+printAWTTiles.customNumSamples+" -> "+printNumSamples+", printAnimator "+printAnimator);
-              }
-              if( reqNewGLAD ) {
-                  final GLDrawableFactory factory = GLDrawableFactory.getFactory(newGLADCaps.getGLProfile());
-                  GLOffscreenAutoDrawable offGLAD = null;
-                  try {
-                      offGLAD = factory.createOffscreenAutoDrawable(null, newGLADCaps, null,
-                              printAWTTiles.customTileWidth != -1 ? printAWTTiles.customTileWidth : DEFAULT_PRINT_TILE_SIZE,
-                              printAWTTiles.customTileHeight != -1 ? printAWTTiles.customTileHeight : DEFAULT_PRINT_TILE_SIZE);
-                  } catch (final GLException gle) {
-                      if( DEBUG ) {
-                          System.err.println("Caught: "+gle.getMessage());
-                          gle.printStackTrace();
-                      }
-                  }
-                  if( null != offGLAD ) {
-                      printGLAD = offGLAD;
-                      GLDrawableUtil.swapGLContextAndAllGLEventListener(GLJPanel.this, printGLAD);
-                      printDrawable = printGLAD.getDelegatedDrawable();
-                  }
-              }
-              printAWTTiles.setGLOrientation( !GLJPanel.this.skipGLOrientationVerticalFlip && printGLAD.isGLOriented(), printGLAD.isGLOriented() );
-              printAWTTiles.renderer.setTileSize(printDrawable.getSurfaceWidth(), printDrawable.getSurfaceHeight(), 0);
-              printAWTTiles.renderer.attachAutoDrawable(printGLAD);
-              if( DEBUG ) {
-                  System.err.println("AWT print.setup "+printAWTTiles);
-                  System.err.println("AWT print.setup AA "+printNumSamples+", "+newGLADCaps);
-                  System.err.println("AWT print.setup printGLAD: "+printGLAD.getSurfaceWidth()+"x"+printGLAD.getSurfaceHeight()+", "+printGLAD);
-                  System.err.println("AWT print.setup printDraw: "+printDrawable.getSurfaceWidth()+"x"+printDrawable.getSurfaceHeight()+", "+printDrawable);
-              }
-          } finally {
-              _lock.unlock();
-          }
-      }
-  };
-
-  @Override
-  public void releasePrint() {
-      if( !printActive ) {
-          throw new IllegalStateException("setupPrint() not called");
-      }
-      sendReshape = false; // clear reshape flag
-      handleReshape = false; // ditto
-      AWTEDTExecutor.singleton.invoke(getTreeLock(), true /* allowOnNonEDT */, true /* wait */, releasePrintOnEDT);
-  }
-
-  private final Runnable releasePrintOnEDT = new Runnable() {
-      @Override
-      public void run() {
-          final RecursiveLock _lock = lock;
-          _lock.lock();
-          try {
-              if( DEBUG ) {
-                  System.err.println(getThreadName()+": GLJPanel.releasePrintOnEDT.0 "+printAWTTiles);
-              }
-              printAWTTiles.dispose();
-              printAWTTiles= null;
-              if( printGLAD != GLJPanel.this ) {
-                  GLDrawableUtil.swapGLContextAndAllGLEventListener(printGLAD, GLJPanel.this);
-                  printGLAD.destroy();
-              }
-              printGLAD = null;
-              if( null != printAnimator ) {
-                  printAnimator.add(GLJPanel.this);
-                  printAnimator = null;
-              }
-
-              // trigger reshape, i.e. gl-viewport and -listener - this component might got resized!
-              final int awtWidth = GLJPanel.this.getWidth();
-              final int awtHeight= GLJPanel.this.getHeight();
-              final int scaledAWTWidth = SurfaceScaleUtils.scale(awtWidth, hasPixelScale[0]);
-              final int scaledAWTHeight= SurfaceScaleUtils.scale(awtHeight, hasPixelScale[1]);
-              final GLDrawable drawable = GLJPanel.this.getDelegatedDrawable();
-              if( scaledAWTWidth != panelWidth || scaledAWTHeight != panelHeight ||
-                  drawable.getSurfaceWidth() != panelWidth || drawable.getSurfaceHeight() != panelHeight ) {
-                  // -> !( awtSize == panelSize == drawableSize )
-                  if ( DEBUG ) {
-                      System.err.println(getThreadName()+": GLJPanel.releasePrintOnEDT.0: resize [printing] panel " +panelWidth+"x"+panelHeight + " @ scale "+getPixelScaleStr()+
-                              ", draw "+drawable.getSurfaceWidth()+"x"+drawable.getSurfaceHeight()+
-                              " -> " + awtWidth+"x"+awtHeight+" * "+getPixelScaleStr()+" -> "+scaledAWTWidth+"x"+scaledAWTHeight);
-                  }
-                  reshapeWidth = scaledAWTWidth;
-                  reshapeHeight = scaledAWTHeight;
-                  sendReshape = handleReshape(); // reshapeSize -> panelSize, backend reshape w/ GL reshape
-              } else {
-                  sendReshape = true; // only GL reshape
-              }
-              printActive = false;
-              display();
-          } finally {
-              _lock.unlock();
-          }
-      }
-  };
-
-  @Override
-  public void print(final Graphics graphics) {
-      if( !printActive ) {
-          throw new IllegalStateException("setupPrint() not called");
-      }
-      if(DEBUG && !EventQueue.isDispatchThread()) {
-          System.err.println(getThreadName()+": Warning: GLCanvas print - not called from AWT-EDT");
-          // we cannot dispatch print on AWT-EDT due to printing internal locking ..
-      }
-      sendReshape = false; // clear reshape flag
-      handleReshape = false; // ditto
-
-      final Graphics2D g2d = (Graphics2D)graphics;
-      try {
-          printAWTTiles.setupGraphics2DAndClipBounds(g2d, getWidth(), getHeight());
-          final TileRenderer tileRenderer = printAWTTiles.renderer;
-          if( DEBUG ) {
-              System.err.println("AWT print.0: "+tileRenderer);
-          }
-          if( !tileRenderer.eot() ) {
-              try {
-                  do {
-                      if( printGLAD != GLJPanel.this ) {
-                          tileRenderer.display();
-                      } else {
-                          backend.doPlainPaint();
-                      }
-                  } while ( !tileRenderer.eot() );
-                  if( DEBUG ) {
-                      System.err.println("AWT print.1: "+printAWTTiles);
-                  }
-              } finally {
-                  tileRenderer.reset();
-                  printAWTTiles.resetGraphics2D();
-              }
-          }
-      } catch (final NoninvertibleTransformException nte) {
-          System.err.println("Caught: Inversion failed of: "+g2d.getTransform());
-          nte.printStackTrace();
-      }
-      if( DEBUG ) {
-          System.err.println("AWT print.X: "+printAWTTiles);
-      }
-  }
-  @Override
-  protected void printComponent(final Graphics g) {
-      if( DEBUG ) {
-          System.err.println("AWT printComponent.X: "+printAWTTiles);
-      }
-      print(g);
-  }
-
-  @Override
-  public void setOpaque(final boolean opaque) {
-    if (backend != null) {
-      backend.setOpaque(opaque);
-    }
-    super.setOpaque(opaque);
-  }
-
-  @Override
-  public void addGLEventListener(final GLEventListener listener) {
-    helper.addGLEventListener(listener);
-  }
-
-  @Override
-  public void addGLEventListener(final int index, final GLEventListener listener) {
-    helper.addGLEventListener(index, listener);
-  }
-
-  @Override
-  public int getGLEventListenerCount() {
-      return helper.getGLEventListenerCount();
-  }
-
-  @Override
-  public GLEventListener getGLEventListener(final int index) throws IndexOutOfBoundsException {
-      return helper.getGLEventListener(index);
-  }
-
-  @Override
-  public boolean areAllGLEventListenerInitialized() {
-     return helper.areAllGLEventListenerInitialized();
-  }
-
-  @Override
-  public boolean getGLEventListenerInitState(final GLEventListener listener) {
-      return helper.getGLEventListenerInitState(listener);
-  }
-
-  @Override
-  public void setGLEventListenerInitState(final GLEventListener listener, final boolean initialized) {
-      helper.setGLEventListenerInitState(listener, initialized);
-  }
-
-  @Override
-  public GLEventListener disposeGLEventListener(final GLEventListener listener, final boolean remove) {
-    final DisposeGLEventListenerAction r = new DisposeGLEventListenerAction(listener, remove);
-    if (EventQueue.isDispatchThread()) {
-      r.run();
-    } else {
-      // Multithreaded redrawing of Swing components is not allowed,
-      // so do everything on the event dispatch thread
-      try {
-        EventQueue.invokeAndWait(r);
-      } catch (final Exception e) {
-        throw new GLException(e);
-      }
-    }
-    return r.listener;
-  }
-
-  @Override
-  public GLEventListener removeGLEventListener(final GLEventListener listener) {
-    return helper.removeGLEventListener(listener);
-  }
-
-  @Override
-  public void setAnimator(final GLAnimatorControl animatorControl) {
-    helper.setAnimator(animatorControl);
-  }
-
-  @Override
-  public GLAnimatorControl getAnimator() {
-    return helper.getAnimator();
-  }
-
-  @Override
-  public final Thread setExclusiveContextThread(final Thread t) throws GLException {
-      return helper.setExclusiveContextThread(t, getContext());
-  }
-
-  @Override
-  public final Thread getExclusiveContextThread() {
-      return helper.getExclusiveContextThread();
-  }
-
-  @Override
-  public boolean invoke(final boolean wait, final GLRunnable glRunnable) throws IllegalStateException {
-    return helper.invoke(this, wait, glRunnable);
-  }
-
-  @Override
-  public boolean invoke(final boolean wait, final List<GLRunnable> glRunnables) throws IllegalStateException {
-    return helper.invoke(this, wait, glRunnables);
-  }
-
-  @Override
-  public void flushGLRunnables() {
-      helper.flushGLRunnables();
-  }
-
-  @Override
-  public GLContext createContext(final GLContext shareWith) {
-    final RecursiveLock _lock = lock;
-    _lock.lock();
-    try {
-        final Backend b = backend;
-        if ( null == b ) {
-            return null;
-        }
-        return b.createContext(shareWith);
-    } finally {
-        _lock.unlock();
-    }
-  }
-
-  @Override
-  public void setRealized(final boolean realized) {
-  }
-
-  @Override
-  public boolean isRealized() {
-      return isInitialized;
-  }
-
-  @Override
-  public GLContext setContext(final GLContext newCtx, final boolean destroyPrevCtx) {
-    final RecursiveLock _lock = lock;
-    _lock.lock();
-    try {
-        final Backend b = backend;
-        if ( null == b ) {
-            return null;
-        }
-        final GLContext oldCtx = b.getContext();
-        GLDrawableHelper.switchContext(b.getDrawable(), oldCtx, destroyPrevCtx, newCtx, additionalCtxCreationFlags);
-        b.setContext(newCtx);
-        return oldCtx;
-    } finally {
-        _lock.unlock();
-    }
-  }
-
-
-  @Override
-  public final GLDrawable getDelegatedDrawable() {
-    final Backend b = backend;
-    if ( null == b ) {
-        return null;
-    }
-    return b.getDrawable();
-  }
-
-  @Override
-  public GLContext getContext() {
-    final Backend b = backend;
-    if ( null == b ) {
-        return null;
-    }
-    return b.getContext();
-  }
-
-  @Override
-  public GL getGL() {
-    if (Beans.isDesignTime()) {
-      return null;
-    }
-    final GLContext context = getContext();
-    return (context == null) ? null : context.getGL();
-  }
-
-  @Override
-  public GL setGL(final GL gl) {
-    final GLContext context = getContext();
-    if (context != null) {
-      context.setGL(gl);
-      return gl;
-    }
-    return null;
-  }
-
-  @Override
-  public void setAutoSwapBufferMode(final boolean enable) {
-    this.autoSwapBufferMode = enable;
-    boolean backendHandlesSwapBuffer = false;
-    if( isInitialized ) {
-        final Backend b = backend;
-        if ( null != b ) {
-            backendHandlesSwapBuffer= b.handlesSwapBuffer();
-        }
-    }
-    if( !backendHandlesSwapBuffer ) {
-        helper.setAutoSwapBufferMode(enable);
-    }
-  }
-
-  @Override
-  public boolean getAutoSwapBufferMode() {
-    return autoSwapBufferMode;
-  }
-
-  @Override
-  public void swapBuffers() {
-    if( isInitialized ) {
-        final Backend b = backend;
-        if ( null != b ) {
-            b.swapBuffers();
-        }
-    }
-  }
-
-  @Override
-  public void setContextCreationFlags(final int flags) {
-    additionalCtxCreationFlags = flags;
-  }
-
-  @Override
-  public int getContextCreationFlags() {
-    return additionalCtxCreationFlags;
-  }
-
-  /** For a translucent GLJPanel (one for which {@link #setOpaque
-      setOpaque}(false) has been called), indicates whether the
-      application should preserve the OpenGL color buffer
-      (GL_COLOR_BUFFER_BIT) for correct rendering of the GLJPanel and
-      underlying widgets which may show through portions of the
-      GLJPanel with alpha values less than 1.  Most Swing
-      implementations currently expect the GLJPanel to be completely
-      cleared (e.g., by <code>glClear(GL_COLOR_BUFFER_BIT |
-      GL_DEPTH_BUFFER_BIT)</code>), but for certain optimized Swing
-      implementations which use OpenGL internally, it may be possible
-      to perform OpenGL rendering using the GLJPanel into the same
-      OpenGL drawable as the Swing implementation uses. */
-  public boolean shouldPreserveColorBufferIfTranslucent() {
-    return oglPipelineUsable();
-  }
-
-  @Override
-  public int getSurfaceWidth() {
-      return panelWidth; // scaled surface width in pixel units, current as-from reshape
-  }
-
-  @Override
-  public int getSurfaceHeight() {
-      return panelHeight; // scaled surface height in pixel units, current as-from reshape
-  }
-
-  /**
-   * {@inheritDoc}
-   * <p>
-   * Method returns a valid value only <i>after</i>
-   * the backend has been initialized, either {@link #initializeBackend(boolean) eagerly}
-   * or manually via the first display call.<br/>
-   * Method always returns a valid value when called from within a {@link GLEventListener}.
-   * </p>
-   */
-  @Override
-  public boolean isGLOriented() {
-    final Backend b = backend;
-    if ( null == b ) {
-        return true;
-    }
-    return b.getDrawable().isGLOriented();
-  }
-
-  /**
-   * Skip {@link #isGLOriented()} based vertical flip,
-   * which usually is required by the offscreen backend,
-   * see details about <a href="#verticalFlip">vertical flip</a>
-   * and <a href="#fboGLSLVerticalFlip">FBO / GLSL vertical flip</a>.
-   * <p>
-   * If set to <code>true</code>, user needs to flip the OpenGL rendered scene
-   * <i>if {@link #isGLOriented()} == true</i>, e.g. via the projection matrix.<br/>
-   * See constraints of {@link #isGLOriented()}.
-   * </p>
-   */
-  public final void setSkipGLOrientationVerticalFlip(final boolean v) {
-      skipGLOrientationVerticalFlip = v;
-  }
-  /** See {@link #setSkipGLOrientationVerticalFlip(boolean)}. */
-  public final boolean getSkipGLOrientationVerticalFlip() {
-      return skipGLOrientationVerticalFlip;
-  }
-
-  @Override
-  public GLCapabilitiesImmutable getChosenGLCapabilities() {
-    final Backend b = backend;
-    if ( null == b ) {
-        return null;
-    }
-    return b.getChosenGLCapabilities();
-  }
-
-  @Override
-  public final GLCapabilitiesImmutable getRequestedGLCapabilities() {
-    return reqOffscreenCaps;
-  }
-
-  /**
-   * Set a new requested {@link GLCapabilitiesImmutable} for this GLJPanel
-   * allowing reconfiguration.
-   * <p>
-   * Method shall be invoked from the {@link #isThreadGLCapable() AWT-EDT thread}.
-   * In case it is not invoked on the AWT-EDT thread, an attempt is made to do so.
-   * </p>
-   * <p>
-   * Method will dispose a previous {@link #isRealized() realized} GLContext and offscreen backend!
-   * </p>
-   * @param caps new capabilities.
-   */
-  public final void setRequestedGLCapabilities(final GLCapabilitiesImmutable caps) {
-    if( null == caps ) {
-        throw new IllegalArgumentException("null caps");
-    }
-    Threading.invoke(true,
-        new Runnable() {
-            @Override
-            public void run() {
-                dispose( new Runnable() {
-                    @Override
-                    public void run() {
-                        // switch to new caps and re-init backend
-                        // after actual dispose, but before resume animator
-                        reqOffscreenCaps = caps;
-                        initializeBackendImpl();
-                    } } );
-            }
-        }, getTreeLock());
-  }
-
-  @Override
-  public final GLProfile getGLProfile() {
-    return reqOffscreenCaps.getGLProfile();
-  }
-
-  @Override
-  public NativeSurface getNativeSurface() {
-    final Backend b = backend;
-    if ( null == b ) {
-        return null;
-    }
-    return b.getDrawable().getNativeSurface();
-  }
-
-  @Override
-  public long getHandle() {
-    final Backend b = backend;
-    if ( null == b ) {
-        return 0;
-    }
-    return b.getDrawable().getNativeSurface().getSurfaceHandle();
-  }
-
-  @Override
-  public final GLDrawableFactory getFactory() {
-    return factory;
-  }
-
-  /**
-   * Returns the used texture unit, i.e. a value of [0..n], or -1 if non used.
-   * <p>
-   * If implementation uses a texture-unit, it will be known only after the first initialization, i.e. display call.
-   * </p>
-   * <p>
-   * See <a href="#fboGLSLVerticalFlip">FBO / GLSL Vertical Flip</a>.
-   * </p>
-   */
-  public final int getTextureUnit() {
-    final Backend b = backend;
-    if ( null == b ) {
-        return -1;
-    }
-    return b.getTextureUnit();
-  }
-
-  /**
-   * Allows user to request a texture unit to be used,
-   * must be called before the first initialization, i.e. {@link #display()} call.
-   * <p>
-   * Defaults to <code>0</code>.
-   * </p>
-   * <p>
-   * See <a href="#fboGLSLVerticalFlip">FBO / GLSL Vertical Flip</a>.
-   * </p>
-   *
-   * @param v requested texture unit
-   * @see #getTextureUnit()
-   */
-  public final void setTextureUnit(final int v) {
-      requestedTextureUnit = v;
-  }
-
-  //----------------------------------------------------------------------
-  // Internals only below this point
-  //
-
-  private final Object initSync = new Object();
-  private boolean initializeBackendImpl() {
-    synchronized(initSync) {
-        if( !isInitialized ) {
-            if( handleReshape ) {
-              if (DEBUG) {
-                  System.err.println(getThreadName()+": GLJPanel.createAndInitializeBackend.1: ["+(printActive?"printing":"paint")+"] "+
-                          panelWidth+"x"+panelHeight+" @ scale "+getPixelScaleStr() + " -> " +
-                          reshapeWidth+"x"+reshapeHeight+" @ scale "+getPixelScaleStr());
-              }
-              panelWidth = reshapeWidth;
-              panelHeight = reshapeHeight;
-              handleReshape = false;
-            } else {
-              if (DEBUG) {
-                  System.err.println(getThreadName()+": GLJPanel.createAndInitializeBackend.0: ["+(printActive?"printing":"paint")+"] "+
-                          panelWidth+"x"+panelHeight+" @ scale "+getPixelScaleStr());
-              }
-            }
-
-            if ( 0 >= panelWidth || 0 >= panelHeight ) {
-              return false;
-            }
-
-            if ( null == backend ) {
-                if ( oglPipelineUsable() ) {
-                    backend = new J2DOGLBackend();
-                } else {
-                    backend = new OffscreenBackend(customPixelBufferProvider);
-                }
-                isInitialized = false;
-            }
-
-            if (!isInitialized) {
-                this.factory = GLDrawableFactoryImpl.getFactoryImpl( reqOffscreenCaps.getGLProfile() ); // reqOffscreenCaps may have changed
-                backend.initialize();
-            }
-            return isInitialized;
-        } else {
-            return true;
-        }
-    }
-  }
-
-  private final String getPixelScaleStr() { return "["+hasPixelScale[0]+", "+hasPixelScale[1]+"]"; }
-
-  @Override
-  public WindowClosingMode getDefaultCloseOperation() {
-      return awtWindowClosingProtocol.getDefaultCloseOperation();
-  }
-
-  @Override
-  public WindowClosingMode setDefaultCloseOperation(final WindowClosingMode op) {
-      return awtWindowClosingProtocol.setDefaultCloseOperation(op);
-  }
-
-  private boolean handleReshape() {
-    if (DEBUG) {
-      System.err.println(getThreadName()+": GLJPanel.handleReshape: "+
-                         panelWidth+"x"+panelHeight+" @ scale "+getPixelScaleStr() + " -> " +
-                         reshapeWidth+"x"+reshapeHeight+" @ scale "+getPixelScaleStr());
-    }
-    panelWidth  = reshapeWidth;
-    panelHeight = reshapeHeight;
-
-    return backend.handleReshape();
-  }
-
-  // This is used as the GLEventListener for the pbuffer-based backend
-  // as well as the callback mechanism for the other backends
-  class Updater implements GLEventListener {
-    private Graphics g;
-
-    public void setGraphics(final Graphics g) {
-      this.g = g;
-    }
-
-    @Override
-    public void init(final GLAutoDrawable drawable) {
-      if (!backend.preGL(g)) {
-        return;
-      }
-      helper.init(GLJPanel.this, !sendReshape);
-      backend.postGL(g, false);
-    }
-
-    @Override
-    public void dispose(final GLAutoDrawable drawable) {
-      helper.disposeAllGLEventListener(GLJPanel.this, false);
-    }
-
-    @Override
-    public void display(final GLAutoDrawable drawable) {
-      if (!backend.preGL(g)) {
-        return;
-      }
-      if (sendReshape) {
-        if (DEBUG) {
-          System.err.println(getThreadName()+": GLJPanel.display: reshape(" + viewportX + "," + viewportY + " " + panelWidth + "x" + panelHeight + " @ scale "+getPixelScaleStr()+")");
-        }
-        helper.reshape(GLJPanel.this, viewportX, viewportY, panelWidth, panelHeight);
-        sendReshape = false;
-      }
-
-      helper.display(GLJPanel.this);
-      backend.postGL(g, true);
-    }
-
-    public void plainPaint(final GLAutoDrawable drawable) {
-      helper.display(GLJPanel.this);
-    }
-
-    @Override
-    public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
-      // This is handled above and dispatched directly to the appropriate context
-    }
-  }
-
-  @Override
-  public String toString() {
-    final GLDrawable d = ( null != backend ) ? backend.getDrawable() : null;
-    return "AWT-GLJPanel[ drawableType "+ ( ( null != d ) ? d.getClass().getName() : "null" ) +
-           ", chosenCaps " + getChosenGLCapabilities() +
-           "]";
-  }
-
-  private final Runnable disposeAction = new Runnable() {
-    @Override
-    public void run() {
-        final RecursiveLock _lock = lock;
-        _lock.lock();
-        try {
-            if ( null != backend ) {
-                final GLContext _context = backend.getContext();
-                final boolean backendDestroy = !backend.isUsingOwnLifecycle();
-
-                GLException exceptionOnDisposeGL = null;
-                if( null != _context && _context.isCreated() ) {
-                    try {
-                        helper.disposeGL(GLJPanel.this, _context, !backendDestroy);
-                    } catch (final GLException gle) {
-                        exceptionOnDisposeGL = gle;
-                    }
-                }
-                Throwable exceptionBackendDestroy = null;
-                if ( backendDestroy ) {
-                    try {
-                        backend.destroy();
-                    } catch( final Throwable re ) {
-                        exceptionBackendDestroy = re;
-                    }
-                    backend = null;
-                    isInitialized = false;
-                }
-
-                // throw exception in order of occurrence ..
-                if( null != exceptionOnDisposeGL ) {
-                    throw exceptionOnDisposeGL;
-                }
-                if( null != exceptionBackendDestroy ) {
-                    throw GLException.newGLException(exceptionBackendDestroy);
-                }
-            }
-        } finally {
-            _lock.unlock();
-        }
-    }
-  };
-
-  private final Runnable updaterInitAction = new Runnable() {
-    @Override
-    public void run() {
-      updater.init(GLJPanel.this);
-    }
-  };
-
-  private final Runnable updaterDisplayAction = new Runnable() {
-    @Override
-    public void run() {
-      updater.display(GLJPanel.this);
-    }
-  };
-
-  private final Runnable updaterPlainDisplayAction = new Runnable() {
-    @Override
-    public void run() {
-      updater.plainPaint(GLJPanel.this);
-    }
-  };
-
-  private final Runnable paintImmediatelyAction = new Runnable() {
-    @Override
-    public void run() {
-      paintImmediately(0, 0, getWidth(), getHeight());
-    }
-  };
-
-  private class DisposeGLEventListenerAction implements Runnable {
-      GLEventListener listener;
-      private final boolean remove;
-      private DisposeGLEventListenerAction(final GLEventListener listener, final boolean remove) {
-          this.listener = listener;
-          this.remove = remove;
-      }
-
-      @Override
-      public void run() {
-          final Backend b = backend;
-          if ( null != b ) {
-              listener = helper.disposeGLEventListener(GLJPanel.this, b.getDrawable(), b.getContext(), listener, remove);
-          }
-      }
-  };
-
-  private int getGLInteger(final GL gl, final int which) {
-    final int[] tmp = new int[1];
-    gl.glGetIntegerv(which, tmp, 0);
-    return tmp[0];
-  }
-
-  protected static String getThreadName() { return Thread.currentThread().getName(); }
-
-  //----------------------------------------------------------------------
-  // Implementations of the various backends
-  //
-
-  /**
-   * Abstraction of the different rendering backends: i.e., pure
-   * software / pixmap rendering, pbuffer-based acceleration, Java 2D
-   * JOGL bridge
-   */
-  static interface Backend {
-    /** Create, Destroy, .. */
-    public boolean isUsingOwnLifecycle();
-
-    /** Called each time the backend needs to initialize itself */
-    public void initialize();
-
-    /** Called when the backend should clean up its resources */
-    public void destroy();
-
-    /** Called when the opacity of the GLJPanel is changed */
-    public void setOpaque(boolean opaque);
-
-    /**
-     * Called to manually create an additional OpenGL context against
-     * this GLJPanel
-     */
-    public GLContext createContext(GLContext shareWith);
-
-    /** Called to set the current backend's GLContext */
-    public void setContext(GLContext ctx);
-
-    /** Called to get the current backend's GLContext */
-    public GLContext getContext();
-
-    /** Called to get the current backend's GLDrawable */
-    public GLDrawable getDrawable();
-
-    /** Returns the used texture unit, i.e. a value of [0..n], or -1 if non used. */
-    public int getTextureUnit();
-
-    /** Called to fetch the "real" GLCapabilities for the backend */
-    public GLCapabilitiesImmutable getChosenGLCapabilities();
-
-    /** Called to fetch the "real" GLProfile for the backend */
-    public GLProfile getGLProfile();
-
-    /**
-     * Called to handle a reshape event. When this is called, the
-     * OpenGL context associated with the backend is not current, to
-     * make it easier to destroy and re-create pbuffers if necessary.
-     */
-    public boolean handleReshape();
-
-    /**
-     * Called before the OpenGL work is done in init() and display().
-     * If false is returned, this render is aborted.
-     */
-    public boolean preGL(Graphics g);
-
-    /**
-     * Return true if backend handles 'swap buffer' itself
-     * and hence the helper's setAutoSwapBuffer(enable) shall not be called.
-     * In this case {@link GLJPanel#autoSwapBufferMode} is being used
-     * in the backend to determine whether to swap buffers or not.
-     */
-    public boolean handlesSwapBuffer();
-
-    /**
-     * Shall invoke underlying drawable's swapBuffer.
-     */
-    public void swapBuffers();
-
-    /**
-     * Called after the OpenGL work is done in init() and display().
-     * The isDisplay argument indicates whether this was called on
-     * behalf of a call to display() rather than init().
-     */
-    public void postGL(Graphics g, boolean isDisplay);
-
-    /** Called from within paintComponent() to initiate the render */
-    public void doPaintComponent(Graphics g);
-
-    /** Called from print .. no backend update desired onscreen */
-    public void doPlainPaint();
-  }
-
-  // Base class used by both the software (pixmap) and pbuffer
-  // backends, both of which rely on reading back the OpenGL frame
-  // buffer and drawing it with a BufferedImage
-  class OffscreenBackend implements Backend {
-    private final AWTGLPixelBufferProvider pixelBufferProvider;
-    private final boolean useSingletonBuffer;
-    private AWTGLPixelBuffer pixelBuffer;
-    private BufferedImage alignedImage;
-
-    // One of these is used to store the read back pixels before storing
-    // in the BufferedImage
-    protected IntBuffer readBackIntsForCPUVFlip;
-
-    // Implementation using software rendering
-    private volatile GLDrawable offscreenDrawable; // volatile: avoid locking for read-only access
-    private boolean offscreenIsFBO;
-    private FBObject fboFlipped;
-    private GLSLTextureRaster glslTextureRaster;
-
-    private volatile GLContextImpl offscreenContext; // volatile: avoid locking for read-only access
-    private boolean flipVertical;
-    private int frameCount = 0;
-
-    // For saving/restoring of OpenGL state during ReadPixels
-    private final GLPixelStorageModes psm =  new GLPixelStorageModes();
-
-    OffscreenBackend(final AWTGLPixelBufferProvider custom) {
-        if(null == custom) {
-            pixelBufferProvider = getSingleAWTGLPixelBufferProvider();
-        } else {
-            pixelBufferProvider = custom;
-        }
-        if( pixelBufferProvider instanceof SingletonGLPixelBufferProvider ) {
-            useSingletonBuffer = true;
-        } else {
-            useSingletonBuffer = false;
-        }
-    }
-
-    @Override
-    public final boolean isUsingOwnLifecycle() { return false; }
-
-    @Override
-    public final void initialize() {
-      if(DEBUG) {
-          System.err.println(getThreadName()+": OffscreenBackend: initialize() - frameCount "+frameCount);
-      }
-      GLException glException = null;
-      try {
-          final GLContext[] shareWith = { null };
-          if( helper.isSharedGLContextPending(shareWith) ) {
-              return; // pending ..
-          }
-          offscreenDrawable = factory.createOffscreenDrawable(
-                                                    null /* default platform device */,
-                                                    reqOffscreenCaps,
-                                                    chooser,
-                                                    panelWidth, panelHeight);
-          updateWrappedSurfaceScale(offscreenDrawable);
-          offscreenDrawable.setRealized(true);
-          if( DEBUG_FRAMES ) {
-              offscreenDrawable.getNativeSurface().addSurfaceUpdatedListener(new SurfaceUpdatedListener() {
-                  @Override
-                  public final void surfaceUpdated(final Object updater, final NativeSurface ns, final long when) {
-                      System.err.println(getThreadName()+": OffscreenBackend.swapBuffers - frameCount "+frameCount);
-                  } } );
-          }
-
-          //
-          // Pre context configuration
-          //
-          flipVertical = !GLJPanel.this.skipGLOrientationVerticalFlip && offscreenDrawable.isGLOriented();
-          offscreenIsFBO = offscreenDrawable.getRequestedGLCapabilities().isFBO();
-          final boolean useGLSLFlip_pre = flipVertical && offscreenIsFBO && reqOffscreenCaps.getGLProfile().isGL2ES2() && USE_GLSL_TEXTURE_RASTERIZER;
-          if( offscreenIsFBO && !useGLSLFlip_pre ) {
-              // Texture attachment only required for GLSL vertical flip, hence simply use a color-renderbuffer attachment.
-              ((GLFBODrawable)offscreenDrawable).setFBOMode(0);
-          }
-
-          offscreenContext = (GLContextImpl) offscreenDrawable.createContext(shareWith[0]);
-          offscreenContext.setContextCreationFlags(additionalCtxCreationFlags);
-          if( GLContext.CONTEXT_NOT_CURRENT < offscreenContext.makeCurrent() ) {
-              isInitialized = true;
-              helper.setAutoSwapBufferMode(false); // we handle swap-buffers, see handlesSwapBuffer()
-
-              final GL gl = offscreenContext.getGL();
-              // Remedy for Bug 1020, i.e. OSX/Nvidia's FBO needs to be cleared before blitting,
-              // otherwise first MSAA frame lacks antialiasing.
-              // Clearing of FBO is performed within GLFBODrawableImpl.initialize(..):
-              //   gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
-
-              final GLCapabilitiesImmutable chosenCaps = offscreenDrawable.getChosenGLCapabilities();
-              final boolean glslCompliant = !offscreenContext.hasRendererQuirk(GLRendererQuirks.GLSLNonCompliant);
-              final boolean useGLSLFlip = useGLSLFlip_pre && gl.isGL2ES2() && glslCompliant;
-              if( DEBUG ) {
-                  System.err.println(getThreadName()+": OffscreenBackend.initialize: useGLSLFlip "+useGLSLFlip+
-                          " [flip "+flipVertical+", isFBO "+offscreenIsFBO+", isGL2ES2 "+gl.isGL2ES2()+
-                          ", noglsl "+!USE_GLSL_TEXTURE_RASTERIZER+", glslNonCompliant "+!glslCompliant+
-                          ", isGL2ES2 " + gl.isGL2ES2()+"\n "+offscreenDrawable+"]");
-              }
-              if( useGLSLFlip ) {
-                  final GLFBODrawable fboDrawable = (GLFBODrawable) offscreenDrawable;
-                  fboDrawable.setTextureUnit( GLJPanel.this.requestedTextureUnit );
-                  try {
-                      fboFlipped = new FBObject();
-                      fboFlipped.init(gl, panelWidth, panelHeight, 0);
-                      fboFlipped.attachColorbuffer(gl, 0, chosenCaps.getAlphaBits()>0);
-                      // fboFlipped.attachRenderbuffer(gl, Attachment.Type.DEPTH, 24);
-                      gl.glClear(GL.GL_COLOR_BUFFER_BIT); // Bug 1020 (see above), cannot do in FBObject due to unknown 'first bind' state.
-                      glslTextureRaster = new GLSLTextureRaster(fboDrawable.getTextureUnit(), true);
-                      glslTextureRaster.init(gl.getGL2ES2());
-                      glslTextureRaster.reshape(gl.getGL2ES2(), 0, 0, panelWidth, panelHeight);
-                  } catch (final Exception ex) {
-                      ex.printStackTrace();
-                      if(null != glslTextureRaster) {
-                        glslTextureRaster.dispose(gl.getGL2ES2());
-                        glslTextureRaster = null;
-                      }
-                      if(null != fboFlipped) {
-                        fboFlipped.destroy(gl);
-                        fboFlipped = null;
-                      }
-                  }
-              } else {
-                  fboFlipped = null;
-                  glslTextureRaster = null;
-              }
-              offscreenContext.release();
-          } else {
-              isInitialized = false;
-          }
-      } catch( final GLException gle ) {
-          glException = gle;
-      } finally {
-          if( !isInitialized ) {
-              if(null != offscreenContext) {
-                  offscreenContext.destroy();
-                  offscreenContext = null;
-              }
-              if(null != offscreenDrawable) {
-                  offscreenDrawable.setRealized(false);
-                  offscreenDrawable = null;
-              }
-          }
-          if( null != glException ) {
-              throw new GLException("Caught GLException: "+glException.getMessage(), glException);
-          }
-      }
-    }
-
-    @Override
-    public final void destroy() {
-      if(DEBUG) {
-          System.err.println(getThreadName()+": OffscreenBackend: destroy() - offscreenContext: "+(null!=offscreenContext)+" - offscreenDrawable: "+(null!=offscreenDrawable)+" - frameCount "+frameCount);
-      }
-      if ( null != offscreenContext && offscreenContext.isCreated() ) {
-        if( GLContext.CONTEXT_NOT_CURRENT < offscreenContext.makeCurrent() ) {
-            try {
-                final GL gl = offscreenContext.getGL();
-                if(null != glslTextureRaster) {
-                    glslTextureRaster.dispose(gl.getGL2ES2());
-                }
-                if(null != fboFlipped) {
-                    fboFlipped.destroy(gl);
-                }
-            } finally {
-                offscreenContext.destroy();
-            }
-        }
-      }
-      offscreenContext = null;
-      glslTextureRaster = null;
-      fboFlipped = null;
-      offscreenContext = null;
-
-      if (offscreenDrawable != null) {
-        final AbstractGraphicsDevice adevice = offscreenDrawable.getNativeSurface().getGraphicsConfiguration().getScreen().getDevice();
-        offscreenDrawable.setRealized(false);
-        offscreenDrawable = null;
-        if(null != adevice) {
-            adevice.close();
-        }
-      }
-      offscreenIsFBO = false;
-
-      if( null != readBackIntsForCPUVFlip ) {
-          readBackIntsForCPUVFlip.clear();
-          readBackIntsForCPUVFlip = null;
-      }
-      if( null != pixelBuffer ) {
-          if( !useSingletonBuffer ) {
-              pixelBuffer.dispose();
-          }
-          pixelBuffer = null;
-      }
-      alignedImage = null;
-    }
-
-    @Override
-    public final void setOpaque(final boolean opaque) {
-      if ( opaque != isOpaque() && !useSingletonBuffer ) {
-          pixelBuffer.dispose();
-          pixelBuffer = null;
-          alignedImage = null;
-      }
-    }
-
-    @Override
-    public final boolean preGL(final Graphics g) {
-      // Empty in this implementation
-      return true;
-    }
-
-    @Override
-    public final boolean handlesSwapBuffer() {
-        return true;
-    }
-
-    @Override
-    public final void swapBuffers() {
-        final GLDrawable d = offscreenDrawable;
-        if( null != d ) {
-            d.swapBuffers();
-        }
-    }
-
-    @Override
-    public final void postGL(final Graphics g, final boolean isDisplay) {
-      if (isDisplay) {
-        if( DEBUG_FRAMES ) {
-            System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: - frameCount "+frameCount);
-        }
-
-        final GL gl = offscreenContext.getGL();
-
-        //
-        // Save TextureState ASAP, i.e. the user values for the used FBO texture-unit
-        // and the current active texture-unit (if not same)
-        //
-        final TextureState usrTexState, fboTexState;
-        final int fboTexUnit;
-
-        if( offscreenIsFBO ) {
-            fboTexUnit = GL.GL_TEXTURE0 + ((GLFBODrawable)offscreenDrawable).getTextureUnit();
-            usrTexState = new TextureState(gl, GL.GL_TEXTURE_2D);
-            if( fboTexUnit != usrTexState.getUnit() ) {
-                // glActiveTexture(..) + glBindTexture(..) are implicit performed in GLFBODrawableImpl's
-                // swapBuffers/contextMadeCurent -> swapFBOImpl.
-                // We need to cache the texture unit's bound texture-id before it's overwritten.
-                gl.glActiveTexture(fboTexUnit);
-                fboTexState = new TextureState(gl, fboTexUnit, GL.GL_TEXTURE_2D);
-            } else {
-                fboTexState = usrTexState;
-            }
-        } else {
-            fboTexUnit = 0;
-            usrTexState = null;
-            fboTexState = null;
-        }
-
-
-        if( autoSwapBufferMode ) {
-            // Since we only use a single-buffer non-MSAA or double-buffered MSAA offscreenDrawable,
-            // we can always swap!
-            offscreenDrawable.swapBuffers();
-        }
-
-        final int componentCount;
-        final int alignment;
-        if( isOpaque() ) {
-            // w/o alpha
-            componentCount = 3;
-            alignment = 1;
-        } else {
-            // with alpha
-            componentCount = 4;
-            alignment = 4;
-        }
-
-        final PixelFormat awtPixelFormat = pixelBufferProvider.getAWTPixelFormat(gl.getGLProfile(), componentCount);
-        final GLPixelAttributes pixelAttribs = pixelBufferProvider.getAttributes(gl, componentCount, true);
-
-        if( useSingletonBuffer ) { // attempt to fetch the latest AWTGLPixelBuffer
-            pixelBuffer = (AWTGLPixelBuffer) ((SingletonGLPixelBufferProvider)pixelBufferProvider).getSingleBuffer(awtPixelFormat.comp, pixelAttribs, true);
-        }
-        if( null != pixelBuffer && pixelBuffer.requiresNewBuffer(gl, panelWidth, panelHeight, 0) ) {
-            pixelBuffer.dispose();
-            pixelBuffer = null;
-            alignedImage = null;
-        }
-        final boolean DEBUG_INIT;
-        if ( null == pixelBuffer ) {
-          if (0 >= panelWidth || 0 >= panelHeight ) {
-              return;
-          }
-          pixelBuffer = pixelBufferProvider.allocate(gl, awtPixelFormat.comp, pixelAttribs, true, panelWidth, panelHeight, 1, 0);
-          if(DEBUG) {
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: "+GLJPanel.this.getName()+" pixelBufferProvider isSingletonBufferProvider "+useSingletonBuffer+", 0x"+Integer.toHexString(pixelBufferProvider.hashCode())+", "+pixelBufferProvider.getClass().getSimpleName());
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: "+GLJPanel.this.getName()+" pixelBuffer 0x"+Integer.toHexString(pixelBuffer.hashCode())+", "+pixelBuffer+", alignment "+alignment);
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: "+GLJPanel.this.getName()+" flippedVertical "+flipVertical+", glslTextureRaster "+(null!=glslTextureRaster)+", isGL2ES3 "+gl.isGL2ES3());
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: "+GLJPanel.this.getName()+" panelSize "+panelWidth+"x"+panelHeight+" @ scale "+getPixelScaleStr());
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: "+GLJPanel.this.getName()+" pixelAttribs "+pixelAttribs);
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: "+GLJPanel.this.getName()+" awtPixelFormat "+awtPixelFormat);
-              DEBUG_INIT = true;
-          } else {
-              DEBUG_INIT = false;
-          }
-        } else {
-            DEBUG_INIT = false;
-        }
-        if( offscreenDrawable.getSurfaceWidth() != panelWidth || offscreenDrawable.getSurfaceHeight() != panelHeight ) {
-            throw new InternalError("OffscreenDrawable panelSize mismatch (reshape missed): panelSize "+panelWidth+"x"+panelHeight+" != drawable "+offscreenDrawable.getSurfaceWidth()+"x"+offscreenDrawable.getSurfaceHeight()+", on thread "+getThreadName());
-        }
-        if( null == alignedImage ||
-            panelWidth != alignedImage.getWidth() || panelHeight != alignedImage.getHeight() ||
-            !pixelBuffer.isDataBufferSource(alignedImage) ) {
-            alignedImage = pixelBuffer.getAlignedImage(panelWidth, panelHeight);
-            if(DEBUG) {
-                System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0: "+GLJPanel.this.getName()+" new alignedImage "+alignedImage.getWidth()+"x"+alignedImage.getHeight()+" @ scale "+getPixelScaleStr()+", "+alignedImage+", pixelBuffer "+pixelBuffer.width+"x"+pixelBuffer.height+", "+pixelBuffer);
-            }
-        }
-        final IntBuffer readBackInts;
-
-        if( !flipVertical || null != glslTextureRaster ) {
-           readBackInts = (IntBuffer) pixelBuffer.buffer;
-        } else {
-           if( null == readBackIntsForCPUVFlip || pixelBuffer.width * pixelBuffer.height > readBackIntsForCPUVFlip.remaining() ) {
-               readBackIntsForCPUVFlip = IntBuffer.allocate(pixelBuffer.width * pixelBuffer.height);
-           }
-           readBackInts = readBackIntsForCPUVFlip;
-        }
-
-        // Must now copy pixels from offscreen context into surface
-        if( DEBUG_FRAMES ) {
-            System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.readPixels: - frameCount "+frameCount);
-        }
-
-        // Save PACK modes, reset them to defaults and set alignment
-        psm.setPackAlignment(gl, alignment);
-        if( gl.isGL2ES3() ) {
-            final GL2ES3 gl2es3 = gl.getGL2ES3();
-            psm.setPackRowLength(gl2es3, panelWidth);
-            gl2es3.glReadBuffer(gl2es3.getDefaultReadBuffer());
-            if( DEBUG_INIT ) {
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.0: fboDrawable "+offscreenDrawable);
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.0: isGL2ES3, readBuffer 0x"+Integer.toHexString(gl2es3.getDefaultReadBuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.0: def-readBuffer 0x"+Integer.toHexString(gl2es3.getDefaultReadBuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.0: def-readFBO    0x"+Integer.toHexString(gl2es3.getDefaultReadFramebuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.0: bound-readFBO  0x"+Integer.toHexString(gl2es3.getBoundFramebuffer(GL2ES3.GL_READ_FRAMEBUFFER)));
-            }
-        }
-
-        if(null != glslTextureRaster) { // implies flippedVertical
-            final boolean viewportChange;
-            final int[] usrViewport = new int[] { 0, 0, 0, 0 };
-            gl.glGetIntegerv(GL.GL_VIEWPORT, usrViewport, 0);
-            viewportChange = 0 != usrViewport[0] || 0 != usrViewport[1] ||
-                             panelWidth != usrViewport[2] || panelHeight != usrViewport[3];
-            if( DEBUG_VIEWPORT ) {
-                System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL: "+GLJPanel.this.getName()+" Viewport: change "+viewportChange+
-                         ", "+usrViewport[0]+"/"+usrViewport[1]+" "+usrViewport[2]+"x"+usrViewport[3]+
-                         " -> 0/0 "+panelWidth+"x"+panelHeight);
-            }
-            if( viewportChange ) {
-                gl.glViewport(0, 0, panelWidth, panelHeight);
-            }
-
-            // perform vert-flipping via OpenGL/FBO
-            final GLFBODrawable fboDrawable = (GLFBODrawable)offscreenDrawable;
-            final FBObject.TextureAttachment fboTex = fboDrawable.getColorbuffer(GL.GL_FRONT).getTextureAttachment();
-
-            fboFlipped.bind(gl);
-
-            // gl.glActiveTexture(GL.GL_TEXTURE0 + fboDrawable.getTextureUnit()); // implicit by GLFBODrawableImpl: swapBuffers/contextMadeCurent -> swapFBOImpl
-            gl.glBindTexture(GL.GL_TEXTURE_2D, fboTex.getName());
-            // gl.glClear(GL.GL_DEPTH_BUFFER_BIT); // fboFlipped runs w/o DEPTH!
-
-            glslTextureRaster.display(gl.getGL2ES2());
-            if( DEBUG_INIT ) {
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.1: fboDrawable "+fboDrawable);
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.1: read from fbo-rb "+fboFlipped.getReadFramebuffer()+", fbo "+fboFlipped);
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.1: isGL2ES3, readBuffer 0x"+Integer.toHexString(gl.getDefaultReadBuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.1: def-readBuffer 0x"+Integer.toHexString(gl.getDefaultReadBuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.1: def-readFBO    0x"+Integer.toHexString(gl.getDefaultReadFramebuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.1: bound-readFBO  0x"+Integer.toHexString(gl.getBoundFramebuffer(GL2ES3.GL_READ_FRAMEBUFFER)));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.1: "+GLJPanel.this.getName()+" pixelAttribs "+pixelAttribs);
-            }
-            gl.glReadPixels(0, 0, panelWidth, panelHeight, pixelAttribs.format, pixelAttribs.type, readBackInts);
-
-            fboFlipped.unbind(gl);
-            if( DEBUG_INIT ) {
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.2: fboDrawable "+fboDrawable);
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.2: read from fbo-rb "+fboFlipped.getReadFramebuffer()+", fbo "+fboFlipped);
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.2: isGL2ES3, readBuffer 0x"+Integer.toHexString(gl.getDefaultReadBuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.2: def-readBuffer 0x"+Integer.toHexString(gl.getDefaultReadBuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.2: def-readFBO    0x"+Integer.toHexString(gl.getDefaultReadFramebuffer()));
-              System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.postGL.0.2: bound-readFBO  0x"+Integer.toHexString(gl.getBoundFramebuffer(GL2ES3.GL_READ_FRAMEBUFFER)));
-            }
-            if( viewportChange ) {
-                gl.glViewport(usrViewport[0], usrViewport[1], usrViewport[2], usrViewport[3]);
-            }
-        } else {
-            gl.glReadPixels(0, 0, panelWidth, panelHeight, pixelAttribs.format, pixelAttribs.type, readBackInts);
-
-            if ( flipVertical ) {
-                // Copy temporary data into raster of BufferedImage for faster
-                // blitting Note that we could avoid this copy in the cases
-                // where !offscreenDrawable.isGLOriented(),
-                // but that's the software rendering path which is very slow anyway.
-                final BufferedImage image = alignedImage;
-                final int[] src = readBackInts.array();
-                final int[] dest = ((DataBufferInt) image.getRaster().getDataBuffer()).getData();
-                final int incr = panelWidth;
-                int srcPos = 0;
-                int destPos = (panelHeight - 1) * panelWidth;
-                for (; destPos >= 0; srcPos += incr, destPos -= incr) {
-                  System.arraycopy(src, srcPos, dest, destPos, incr);
-                }
-            }
-        }
-        if( 0 != fboTexUnit ) { // implies offscreenIsFBO
-            fboTexState.restore(gl);
-            if( fboTexUnit != usrTexState.getUnit() ) {
-                usrTexState.restore(gl);
-            }
-        }
-
-        // Restore saved modes.
-        psm.restore(gl);
-
-        // Note: image will be drawn back in paintComponent() for
-        // correctness on all platforms
-      }
-    }
-
-    @Override
-    public final int getTextureUnit() {
-        if(null != glslTextureRaster && null != offscreenDrawable) { // implies flippedVertical
-            return ((GLFBODrawable)offscreenDrawable).getTextureUnit();
-        }
-        return -1;
-    }
-
-    @Override
-    public final void doPaintComponent(final Graphics g) {
-      helper.invokeGL(offscreenDrawable, offscreenContext, updaterDisplayAction, updaterInitAction);
-
-      if ( null != alignedImage ) {
-        if( DEBUG_FRAMES ) {
-            System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.doPaintComponent.drawImage: - frameCount "+frameCount);
-        }
-        // Draw resulting image in one shot
-        g.drawImage(alignedImage, 0, 0,
-                    SurfaceScaleUtils.scaleInv(alignedImage.getWidth(), hasPixelScale[0]),
-                    SurfaceScaleUtils.scaleInv(alignedImage.getHeight(), hasPixelScale[1]), null); // Null ImageObserver since image data is ready.
-      }
-      frameCount++;
-    }
-
-    @Override
-    public final void doPlainPaint() {
-      helper.invokeGL(offscreenDrawable, offscreenContext, updaterPlainDisplayAction, updaterInitAction);
-    }
-
-    @Override
-    public final boolean handleReshape() {
-        GLDrawableImpl _drawable = (GLDrawableImpl)offscreenDrawable;
-        {
-            final GLDrawableImpl _drawableNew = GLDrawableHelper.resizeOffscreenDrawable(_drawable, offscreenContext, panelWidth, panelHeight);
-            if(_drawable != _drawableNew) {
-                // write back
-                _drawable = _drawableNew;
-                offscreenDrawable = _drawableNew;
-                updateWrappedSurfaceScale(offscreenDrawable);
-            }
-        }
-        if (DEBUG) {
-            System.err.println(getThreadName()+": GLJPanel.OffscreenBackend.handleReshape: " +panelWidth+"x"+panelHeight + " @ scale "+getPixelScaleStr() + " -> " + _drawable.getSurfaceWidth()+"x"+_drawable.getSurfaceHeight());
-        }
-        panelWidth = _drawable.getSurfaceWidth();
-        panelHeight = _drawable.getSurfaceHeight();
-
-        if( null != glslTextureRaster ) {
-            if( GLContext.CONTEXT_NOT_CURRENT < offscreenContext.makeCurrent() ) {
-                try {
-                    final GL gl = offscreenContext.getGL();
-                    fboFlipped.reset(gl, panelWidth, panelHeight, 0);
-                    glslTextureRaster.reshape(gl.getGL2ES2(), 0, 0, panelWidth, panelHeight);
-                } finally {
-                    offscreenContext.release();
-                }
-            }
-        }
-        return _drawable.isRealized();
-    }
-
-    @Override
-    public final GLContext createContext(final GLContext shareWith) {
-      return (null != offscreenDrawable) ? offscreenDrawable.createContext(shareWith) : null;
-    }
-
-    @Override
-    public final void setContext(final GLContext ctx) {
-      offscreenContext=(GLContextImpl)ctx;
-    }
-
-    @Override
-    public final GLContext getContext() {
-      return offscreenContext;
-    }
-
-    @Override
-    public final GLDrawable getDrawable() {
-        return offscreenDrawable;
-    }
-
-    @Override
-    public final GLCapabilitiesImmutable getChosenGLCapabilities() {
-      if (offscreenDrawable == null) {
-        return null;
-      }
-      return offscreenDrawable.getChosenGLCapabilities();
-    }
-
-    @Override
-    public final GLProfile getGLProfile() {
-      if (offscreenDrawable == null) {
-        return null;
-      }
-      return offscreenDrawable.getGLProfile();
-    }
-  }
-
-  class J2DOGLBackend implements Backend {
-    // Opaque Object identifier representing the Java2D surface we are
-    // drawing to; used to determine when to destroy and recreate JOGL
-    // context
-    private Object j2dSurface;
-    // Graphics object being used during Java2D update action
-    // (absolutely essential to cache this)
-    // No-op context representing the Java2D OpenGL context
-    private GLContext j2dContext;
-    // Context associated with no-op drawable representing the JOGL
-    // OpenGL context
-    private GLDrawable joglDrawable;
-    // The real OpenGL context JOGL uses to render
-    private GLContext  joglContext;
-    // State captured from Java2D OpenGL context necessary in order to
-    // properly render into Java2D back buffer
-    private final int[] drawBuffer   = new int[1];
-    private final int[] readBuffer   = new int[1];
-    // This is required when the FBO option of the Java2D / OpenGL
-    // pipeline is active
-    private final int[] frameBuffer  = new int[1];
-    // Current (as of this writing) NVidia drivers have a couple of bugs
-    // relating to the sharing of framebuffer and renderbuffer objects
-    // between contexts. It appears we have to (a) reattach the color
-    // attachment and (b) actually create new depth buffer storage and
-    // attach it in order for the FBO to behave properly in our context.
-    private boolean checkedForFBObjectWorkarounds;
-    private boolean fbObjectWorkarounds;
-    private int[] frameBufferDepthBuffer;
-    private int[] frameBufferTexture;
-    private boolean createNewDepthBuffer;
-    // Current (as of this writing) ATI drivers have problems when the
-    // same FBO is bound in two different contexts. Here we check for
-    // this case and explicitly release the FBO from Java2D's context
-    // before switching to ours. Java2D will re-bind the FBO when it
-    // makes its context current the next time. Interestingly, if we run
-    // this code path on NVidia hardware, it breaks the rendering
-    // results -- no output is generated. This doesn't appear to be an
-    // interaction with the abovementioned NVidia-specific workarounds,
-    // as even if we disable that code the FBO is still reported as
-    // incomplete in our context.
-    private boolean checkedGLVendor;
-    private boolean vendorIsATI;
-
-    // Holding on to this GraphicsConfiguration is a workaround for a
-    // problem in the Java 2D / JOGL bridge when FBOs are enabled; see
-    // comment related to Issue 274 below
-    private GraphicsConfiguration workaroundConfig;
-
-    @Override
-    public final boolean isUsingOwnLifecycle() { return true; }
-
-    @Override
-    public final void initialize() {
-      if(DEBUG) {
-          System.err.println(getThreadName()+": J2DOGL: initialize()");
-      }
-      // No-op in this implementation; everything is done lazily
-      isInitialized = true;
-    }
-
-    @Override
-    public final void destroy() {
-      Java2D.invokeWithOGLContextCurrent(null, new Runnable() {
-          @Override
-          public void run() {
-            if(DEBUG) {
-                System.err.println(getThreadName()+": J2DOGL: destroy() - joglContext: "+(null!=joglContext)+" - joglDrawable: "+(null!=joglDrawable));
-            }
-            if (joglContext != null) {
-              joglContext.destroy();
-              joglContext = null;
-            }
-            joglDrawable = null;
-            if (j2dContext != null) {
-              j2dContext.destroy();
-              j2dContext = null;
-            }
-          }
-        });
-    }
-
-    @Override
-    public final void setOpaque(final boolean opaque) {
-      // Empty in this implementation
-    }
-
-    @Override
-    public final GLContext createContext(final GLContext shareWith) {
-      if(null != shareWith) {
-          throw new GLException("J2DOGLBackend cannot create context w/ additional shared context, since it already needs to share the context w/ J2D.");
-      }
-      return (null != joglDrawable && null != j2dContext) ? joglDrawable.createContext(j2dContext) : null;
-    }
-
-    @Override
-    public final void setContext(final GLContext ctx) {
-        joglContext=ctx;
-    }
-
-    @Override
-    public final GLContext getContext() {
-      return joglContext;
-    }
-
-    @Override
-    public final GLDrawable getDrawable() {
-        return joglDrawable;
-    }
-
-    @Override
-    public final int getTextureUnit() { return -1; }
-
-    @Override
-    public final GLCapabilitiesImmutable getChosenGLCapabilities() {
-      // FIXME: should do better than this; is it possible to query J2D Caps ?
-      return new GLCapabilities(null);
-    }
-
-    @Override
-    public final GLProfile getGLProfile() {
-      // FIXME: should do better than this; is it possible to query J2D's Profile ?
-      return GLProfile.getDefault(GLProfile.getDefaultDevice());
-    }
-
-    @Override
-    public final boolean handleReshape() {
-      // Empty in this implementation
-      return true;
-    }
-
-    @Override
-    public final boolean preGL(final Graphics g) {
-      final GL2 gl = joglContext.getGL().getGL2();
-      // Set up needed state in JOGL context from Java2D context
-      gl.glEnable(GL.GL_SCISSOR_TEST);
-      final Rectangle r = Java2D.getOGLScissorBox(g);
-
-      if (r == null) {
-        if (DEBUG) {
-          System.err.println(getThreadName()+": Java2D.getOGLScissorBox() returned null");
-        }
-        return false;
-      }
-      if (DEBUG) {
-        System.err.println(getThreadName()+": GLJPanel: gl.glScissor(" + r.x + ", " + r.y + ", " + r.width + ", " + r.height + ")");
-      }
-
-      gl.glScissor(r.x, r.y, r.width, r.height);
-      final Rectangle oglViewport = Java2D.getOGLViewport(g, panelWidth, panelHeight);
-      // If the viewport X or Y changes, in addition to the panel's
-      // width or height, we need to send a reshape operation to the
-      // client
-      if ((viewportX != oglViewport.x) ||
-          (viewportY != oglViewport.y)) {
-        sendReshape = true;
-        if (DEBUG) {
-          System.err.println(getThreadName()+": Sending reshape because viewport changed");
-          System.err.println("  viewportX (" + viewportX + ") ?= oglViewport.x (" + oglViewport.x + ")");
-          System.err.println("  viewportY (" + viewportY + ") ?= oglViewport.y (" + oglViewport.y + ")");
-        }
-      }
-      viewportX = oglViewport.x;
-      viewportY = oglViewport.y;
-
-      // If the FBO option is active, bind to the FBO from the Java2D
-      // context.
-      // Note that all of the plumbing in the context sharing stuff will
-      // allow us to bind to this object since it's in our namespace.
-      if (Java2D.isFBOEnabled() &&
-          Java2D.getOGLSurfaceType(g) == Java2D.FBOBJECT) {
-
-        // The texture target for Java2D's OpenGL pipeline when using FBOs
-        // -- either GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE_ARB
-        final int fboTextureTarget = Java2D.getOGLTextureType(g);
-
-        if (!checkedForFBObjectWorkarounds) {
-          checkedForFBObjectWorkarounds = true;
-          gl.glBindTexture(fboTextureTarget, 0);
-          gl.glBindFramebuffer(GL.GL_FRAMEBUFFER, frameBuffer[0]);
-          final int status = gl.glCheckFramebufferStatus(GL.GL_FRAMEBUFFER);
-          if (status != GL.GL_FRAMEBUFFER_COMPLETE) {
-              // Need to do workarounds
-              fbObjectWorkarounds = true;
-              createNewDepthBuffer = true;
-              if (DEBUG) {
-                  System.err.println(getThreadName()+": GLJPanel: ERR GL_FRAMEBUFFER_BINDING: Discovered Invalid J2D FBO("+frameBuffer[0]+"): "+FBObject.getStatusString(status) +
-                                     ", frame_buffer_object workarounds to be necessary");
-              }
-          } else {
-            // Don't need the frameBufferTexture temporary any more
-            frameBufferTexture = null;
-            if (DEBUG) {
-              System.err.println(getThreadName()+": GLJPanel: OK GL_FRAMEBUFFER_BINDING: "+frameBuffer[0]);
-            }
-          }
-        }
-
-        if (fbObjectWorkarounds && createNewDepthBuffer) {
-          if (frameBufferDepthBuffer == null)
-            frameBufferDepthBuffer = new int[1];
-
-          // Create our own depth renderbuffer and associated storage
-          // If we have an old one, delete it
-          if (frameBufferDepthBuffer[0] != 0) {
-            gl.glDeleteRenderbuffers(1, frameBufferDepthBuffer, 0);
-            frameBufferDepthBuffer[0] = 0;
-          }
-
-          gl.glBindTexture(fboTextureTarget, frameBufferTexture[0]);
-          final int[] width = new int[1];
-          final int[] height = new int[1];
-          gl.glGetTexLevelParameteriv(fboTextureTarget, 0, GL2GL3.GL_TEXTURE_WIDTH, width, 0);
-          gl.glGetTexLevelParameteriv(fboTextureTarget, 0, GL2GL3.GL_TEXTURE_HEIGHT, height, 0);
-
-          gl.glGenRenderbuffers(1, frameBufferDepthBuffer, 0);
-          if (DEBUG) {
-            System.err.println(getThreadName()+": GLJPanel: Generated frameBufferDepthBuffer " + frameBufferDepthBuffer[0] +
-                               " with width " + width[0] + ", height " + height[0]);
-          }
-
-          gl.glBindRenderbuffer(GL.GL_RENDERBUFFER, frameBufferDepthBuffer[0]);
-          // FIXME: may need a loop here like in Java2D
-          gl.glRenderbufferStorage(GL.GL_RENDERBUFFER, GL.GL_DEPTH_COMPONENT24, width[0], height[0]);
-
-          gl.glBindRenderbuffer(GL.GL_RENDERBUFFER, 0);
-          createNewDepthBuffer = false;
-        }
-
-        gl.glBindTexture(fboTextureTarget, 0);
-        gl.glBindFramebuffer(GL.GL_FRAMEBUFFER, frameBuffer[0]);
-
-        if (fbObjectWorkarounds) {
-          // Hook up the color and depth buffer attachment points for this framebuffer
-          gl.glFramebufferTexture2D(GL.GL_FRAMEBUFFER,
-                                    GL.GL_COLOR_ATTACHMENT0,
-                                    fboTextureTarget,
-                                    frameBufferTexture[0],
-                                    0);
-          if (DEBUG) {
-            System.err.println(getThreadName()+": GLJPanel: frameBufferDepthBuffer: " + frameBufferDepthBuffer[0]);
-          }
-          gl.glFramebufferRenderbuffer(GL.GL_FRAMEBUFFER,
-                                       GL.GL_DEPTH_ATTACHMENT,
-                                       GL.GL_RENDERBUFFER,
-                                       frameBufferDepthBuffer[0]);
-        }
-
-        if (DEBUG) {
-          final int status = gl.glCheckFramebufferStatus(GL.GL_FRAMEBUFFER);
-          if (status != GL.GL_FRAMEBUFFER_COMPLETE) {
-            throw new GLException("Error: framebuffer was incomplete: status = 0x" +
-                                  Integer.toHexString(status));
-          }
-        }
-      } else {
-        if (DEBUG) {
-          System.err.println(getThreadName()+": GLJPanel: Setting up drawBuffer " + drawBuffer[0] +
-                             " and readBuffer " + readBuffer[0]);
-        }
-
-        gl.glDrawBuffer(drawBuffer[0]);
-        gl.glReadBuffer(readBuffer[0]);
-      }
-
-      return true;
-    }
-
-    @Override
-    public final boolean handlesSwapBuffer() {
-        return false;
-    }
-
-    @Override
-    public final void swapBuffers() {
-        final GLDrawable d = joglDrawable;
-        if( null != d ) {
-            d.swapBuffers();
-        }
-    }
-
-    @Override
-    public final void postGL(final Graphics g, final boolean isDisplay) {
-      // Cause OpenGL pipeline to flush its results because
-      // otherwise it's possible we will buffer up multiple frames'
-      // rendering results, resulting in apparent mouse lag
-      final GL gl = joglContext.getGL();
-      gl.glFinish();
-
-      if (Java2D.isFBOEnabled() &&
-          Java2D.getOGLSurfaceType(g) == Java2D.FBOBJECT) {
-        // Unbind the framebuffer from our context to work around
-        // apparent driver bugs or at least unspecified behavior causing
-        // OpenGL to run out of memory with certain cards and drivers
-        gl.glBindFramebuffer(GL.GL_FRAMEBUFFER, 0);
-      }
-    }
-
-    @Override
-    public final void doPaintComponent(final Graphics g) {
-      // This is a workaround for an issue in the Java 2D / JOGL
-      // bridge (reported by an end user as JOGL Issue 274) where Java
-      // 2D can occasionally leave its internal OpenGL context current
-      // to the on-screen window rather than its internal "scratch"
-      // pbuffer surface to which the FBO is attached. JOGL expects to
-      // find a stable OpenGL drawable (on Windows, an HDC) upon which
-      // it can create another OpenGL context. It turns out that, on
-      // Windows, when Java 2D makes its internal OpenGL context
-      // current against the window in order to put pixels on the
-      // screen, it gets the device context for the window, makes its
-      // context current, and releases the device context. This means
-      // that when JOGL's Runnable gets to run below, the HDC is
-      // already invalid. The workaround for this is to force Java 2D
-      // to make its context current to the scratch surface, which we
-      // can do by executing an empty Runnable with the "shared"
-      // context current. This will be fixed in a Java SE 6 update
-      // release, hopefully 6u2.
-      if (Java2D.isFBOEnabled()) {
-        if (workaroundConfig == null) {
-          workaroundConfig = GraphicsEnvironment.
-            getLocalGraphicsEnvironment().
-            getDefaultScreenDevice().
-            getDefaultConfiguration();
-        }
-        Java2D.invokeWithOGLSharedContextCurrent(workaroundConfig, new Runnable() { @Override
-        public void run() {}});
-      }
-
-      Java2D.invokeWithOGLContextCurrent(g, new Runnable() {
-          @Override
-          public void run() {
-            if (DEBUG) {
-              System.err.println(getThreadName()+": GLJPanel.invokeWithOGLContextCurrent");
-            }
-
-            // Create no-op context representing Java2D context
-            if (j2dContext == null) {
-              j2dContext = factory.createExternalGLContext();
-              if (DEBUG) {
-                System.err.println(getThreadName()+": GLJPanel.Created External Context: "+j2dContext);
-              }
-              if (DEBUG) {
-//                j2dContext.setGL(new DebugGL2(j2dContext.getGL().getGL2()));
-              }
-
-              // Check to see whether we can support the requested
-              // capabilities or need to fall back to a pbuffer
-              // FIXME: add more checks?
-
-              j2dContext.makeCurrent();
-              final GL gl = j2dContext.getGL();
-              if ((getGLInteger(gl, GL.GL_RED_BITS)         < reqOffscreenCaps.getRedBits())        ||
-                  (getGLInteger(gl, GL.GL_GREEN_BITS)       < reqOffscreenCaps.getGreenBits())      ||
-                  (getGLInteger(gl, GL.GL_BLUE_BITS)        < reqOffscreenCaps.getBlueBits())       ||
-                  //                  (getGLInteger(gl, GL.GL_ALPHA_BITS)       < offscreenCaps.getAlphaBits())      ||
-                  (getGLInteger(gl, GL2.GL_ACCUM_RED_BITS)   < reqOffscreenCaps.getAccumRedBits())   ||
-                  (getGLInteger(gl, GL2.GL_ACCUM_GREEN_BITS) < reqOffscreenCaps.getAccumGreenBits()) ||
-                  (getGLInteger(gl, GL2.GL_ACCUM_BLUE_BITS)  < reqOffscreenCaps.getAccumBlueBits())  ||
-                  (getGLInteger(gl, GL2.GL_ACCUM_ALPHA_BITS) < reqOffscreenCaps.getAccumAlphaBits()) ||
-                  //          (getGLInteger(gl, GL2.GL_DEPTH_BITS)       < offscreenCaps.getDepthBits())      ||
-                  (getGLInteger(gl, GL.GL_STENCIL_BITS)     < reqOffscreenCaps.getStencilBits())) {
-                if (DEBUG) {
-                  System.err.println(getThreadName()+": GLJPanel: Falling back to pbuffer-based support because Java2D context insufficient");
-                  System.err.println("                    Available              Required");
-                  System.err.println("GL_RED_BITS         " + getGLInteger(gl, GL.GL_RED_BITS)         + "              " + reqOffscreenCaps.getRedBits());
-                  System.err.println("GL_GREEN_BITS       " + getGLInteger(gl, GL.GL_GREEN_BITS)       + "              " + reqOffscreenCaps.getGreenBits());
-                  System.err.println("GL_BLUE_BITS        " + getGLInteger(gl, GL.GL_BLUE_BITS)        + "              " + reqOffscreenCaps.getBlueBits());
-                  System.err.println("GL_ALPHA_BITS       " + getGLInteger(gl, GL.GL_ALPHA_BITS)       + "              " + reqOffscreenCaps.getAlphaBits());
-                  System.err.println("GL_ACCUM_RED_BITS   " + getGLInteger(gl, GL2.GL_ACCUM_RED_BITS)   + "              " + reqOffscreenCaps.getAccumRedBits());
-                  System.err.println("GL_ACCUM_GREEN_BITS " + getGLInteger(gl, GL2.GL_ACCUM_GREEN_BITS) + "              " + reqOffscreenCaps.getAccumGreenBits());
-                  System.err.println("GL_ACCUM_BLUE_BITS  " + getGLInteger(gl, GL2.GL_ACCUM_BLUE_BITS)  + "              " + reqOffscreenCaps.getAccumBlueBits());
-                  System.err.println("GL_ACCUM_ALPHA_BITS " + getGLInteger(gl, GL2.GL_ACCUM_ALPHA_BITS) + "              " + reqOffscreenCaps.getAccumAlphaBits());
-                  System.err.println("GL_DEPTH_BITS       " + getGLInteger(gl, GL.GL_DEPTH_BITS)       + "              " + reqOffscreenCaps.getDepthBits());
-                  System.err.println("GL_STENCIL_BITS     " + getGLInteger(gl, GL.GL_STENCIL_BITS)     + "              " + reqOffscreenCaps.getStencilBits());
-                }
-                isInitialized = false;
-                backend = null;
-                java2DGLPipelineOK = false;
-                handleReshape = true;
-                j2dContext.destroy();
-                j2dContext = null;
-                return;
-              }
-            } else {
-              j2dContext.makeCurrent();
-            }
-            try {
-              captureJ2DState(j2dContext.getGL(), g);
-              final Object curSurface = Java2D.getOGLSurfaceIdentifier(g);
-              if (curSurface != null) {
-                if (j2dSurface != curSurface) {
-                  if (joglContext != null) {
-                    joglContext.destroy();
-                    joglContext = null;
-                    joglDrawable = null;
-                    sendReshape = true;
-                    if (DEBUG) {
-                      System.err.println(getThreadName()+": Sending reshape because surface changed");
-                      System.err.println("New surface = " + curSurface);
-                    }
-                  }
-                  j2dSurface = curSurface;
-                  if (DEBUG) {
-                      System.err.print(getThreadName()+": Surface type: ");
-                      final int surfaceType = Java2D.getOGLSurfaceType(g);
-                      if (surfaceType == Java2D.UNDEFINED) {
-                        System.err.println("UNDEFINED");
-                      } else if (surfaceType == Java2D.WINDOW) {
-                        System.err.println("WINDOW");
-                      } else if (surfaceType == Java2D.PBUFFER) {
-                        System.err.println("PBUFFER");
-                      } else if (surfaceType == Java2D.TEXTURE) {
-                        System.err.println("TEXTURE");
-                      } else if (surfaceType == Java2D.FLIP_BACKBUFFER) {
-                        System.err.println("FLIP_BACKBUFFER");
-                      } else if (surfaceType == Java2D.FBOBJECT) {
-                        System.err.println("FBOBJECT");
-                      } else {
-                        System.err.println("(Unknown surface type " + surfaceType + ")");
-                      }
-                  }
-                }
-                if (joglContext == null) {
-                  final AbstractGraphicsDevice device = j2dContext.getGLDrawable().getNativeSurface().getGraphicsConfiguration().getScreen().getDevice();
-                  if (factory.canCreateExternalGLDrawable(device)) {
-                    joglDrawable = factory.createExternalGLDrawable();
-                    joglContext = joglDrawable.createContext(j2dContext);
-                    if (DEBUG) {
-                        System.err.println("-- Created External Drawable: "+joglDrawable);
-                        System.err.println("-- Created Context: "+joglContext);
-                    }
-                  }
-                  if (Java2D.isFBOEnabled() &&
-                      Java2D.getOGLSurfaceType(g) == Java2D.FBOBJECT &&
-                      fbObjectWorkarounds) {
-                    createNewDepthBuffer = true;
-                  }
-                }
-                helper.invokeGL(joglDrawable, joglContext, updaterDisplayAction, updaterInitAction);
-              }
-            } finally {
-              j2dContext.release();
-            }
-          }
-        });
-    }
-
-    @Override
-    public final void doPlainPaint() {
-      helper.invokeGL(joglDrawable, joglContext, updaterPlainDisplayAction, updaterInitAction);
-    }
-
-    private final void captureJ2DState(final GL gl, final Graphics g) {
-      gl.glGetIntegerv(GL2GL3.GL_DRAW_BUFFER, drawBuffer, 0);
-      gl.glGetIntegerv(GL2ES3.GL_READ_BUFFER, readBuffer, 0);
-      if (Java2D.isFBOEnabled() &&
-          Java2D.getOGLSurfaceType(g) == Java2D.FBOBJECT) {
-        gl.glGetIntegerv(GL.GL_FRAMEBUFFER_BINDING, frameBuffer, 0);
-        if(!gl.glIsFramebuffer(frameBuffer[0])) {
-          checkedForFBObjectWorkarounds=true;
-          fbObjectWorkarounds = true;
-          createNewDepthBuffer = true;
-          if (DEBUG) {
-              System.err.println(getThreadName()+": GLJPanel: Fetched ERR GL_FRAMEBUFFER_BINDING: "+frameBuffer[0]+" - NOT A FBO"+
-                                 ", frame_buffer_object workarounds to be necessary");
-          }
-        } else if (DEBUG) {
-          System.err.println(getThreadName()+": GLJPanel: Fetched OK GL_FRAMEBUFFER_BINDING: "+frameBuffer[0]);
-        }
-
-        if(fbObjectWorkarounds || !checkedForFBObjectWorkarounds) {
-            // See above for description of what we are doing here
-            if (frameBufferTexture == null)
-                frameBufferTexture = new int[1];
-
-            // Query the framebuffer for its color buffer so we can hook
-            // it back up in our context (should not be necessary)
-            gl.glGetFramebufferAttachmentParameteriv(GL.GL_FRAMEBUFFER,
-                                                     GL.GL_COLOR_ATTACHMENT0,
-                                                     GL.GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
-                                                     frameBufferTexture, 0);
-            if (DEBUG) {
-                System.err.println(getThreadName()+": GLJPanel: FBO COLOR_ATTACHMENT0: " + frameBufferTexture[0]);
-            }
-        }
-
-        if (!checkedGLVendor) {
-          checkedGLVendor = true;
-          final String vendor = gl.glGetString(GL.GL_VENDOR);
-
-          if ((vendor != null) &&
-              vendor.startsWith("ATI")) {
-            vendorIsATI = true;
-          }
-        }
-
-        if (vendorIsATI) {
-          // Unbind the FBO from Java2D's context as it appears that
-          // driver bugs on ATI's side are causing problems if the FBO is
-          // simultaneously bound to more than one context. Java2D will
-          // re-bind the FBO during the next validation of its context.
-          // Note: this breaks rendering at least on NVidia hardware
-          gl.glBindFramebuffer(GL.GL_FRAMEBUFFER, 0);
-        }
-      }
-    }
-  }
-}