Bug 1039 - Specify behavior of GLEventListener Exceptions occurring while GLAutoDrawable processing [part-1]

Implements Specification as described on 'Bug 1039 Comment 1'
  <https://jogamp.org/bugzilla/show_bug.cgi?id=1039#c1>

TODO:
  - Offthread exception handler

++++

GLDrawableHelper is used in all GLAutoDrawable implementations
and for most operations.

GLAutoDrawable/GLDrawableHelper invoke(..) method:

- invoke(..) forwards a caught exception
  - if blocking, it forwards an exception
    happening within the passed GLRunnable(s).
    Here the exception is caught, printed
    and then thrown by invoke itself.

  - if non-blocking, an exception
    happening within the passed GLRunnable(s)
    will be thrown in the thread issuing it's execution,
    i.e. display() call.
    Here the exception is not caught and simply thrown
    by the GLRunnable.

GLAutoDrawable.destroy() -> GLDrawableHelper.disposeGL(..) method:

- disposeAllGLEventListener() being invoked by disposeGL(..),
  catches exception thrown by GLEventListener.dispose(..)
  and prints them to stderr.
  The first caught exception is re-thrown at the end as an GLException.

- disposeGL() catches re-thrown GLException by disposeAllGLEventListener()
  for GLEventListener.dispose(..)
  and re-throws it when operation is complete.

- disposeGL() catches an exception thrown at context destruction or release
  and re-throws it when operation is complete.
  An early exception at context.makeCurrent() is _not_ caught,
  since it is the first operation which simply shall unwind the stack.

GLAutoDrawable.display() -> GLDrawableHelper.invokeGLImpl(..) method:

- invokeGLImpl(..) for display() follows disposeGL() mechanism, i.e.
  it catches exception thrown at
  GLEventListener's init(..), reshape(..) and display(..) methods
  and re-throws it when operation is complete.

  It also catches an exception thrown at context release
  and re-throws it when operation is complete.
  An early exception at context.makeCurrent() is _not_ caught,
  since it is the first operation which simply shall unwind the stack.

++++

None of the above thrown exception shall be caught and suppressed
on the caller side.

If an operation must be completed while an exception is caught,
it shall be cached and re-thrown after the operations.

In case multiple exception at multiple places are caught within
an operation, they all shall be cached and the first one
shall be re-thrown.

In case of multiple exception from the same place,
i.e. a loop through all GLEventListener,
the first shall be cached and re-thrown after operation is completed.

It has to be determined, whether we like to dump the exceptions,
especially the ones who get suppressed in case of multiple exceptions.

9 files changed, 427 insertions, 52 deletions

diff --git a/make/scripts/tests.sh b/make/scripts/tests.sh
index c0ca6c99e..bce9a6907 100644
--- a/make/scripts/tests.sh
+++ b/make/scripts/tests.sh
@@ -475,6 +475,7 @@ function testawtswt() {
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGLDebug00NEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGLDebug01NEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGPUMemSec01NEWT $*
+testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGLException01NEWT $*
 
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestMapBufferRead01NEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.demos.es2.newt.TestRedSquareES2NEWT $*
@@ -538,7 +539,7 @@ function testawtswt() {
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.ect.TestExclusiveContext12FPSAnimNEWT $*
 
 #testawt com.jogamp.opengl.test.junit.jogl.acore.glels.TestGLContextDrawableSwitch02NEWT $*
-testawt com.jogamp.opengl.test.junit.jogl.acore.glels.TestGLContextDrawableSwitch02AWT $*
+#testawt com.jogamp.opengl.test.junit.jogl.acore.glels.TestGLContextDrawableSwitch02AWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.glels.TestGLContextDrawableSwitch01NEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.glels.TestGLContextDrawableSwitch10NEWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.acore.glels.TestGLContextDrawableSwitch11NewtAWT $*
diff --git a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
index 03c6d6929..c409bb253 100644
--- a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
+++ b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
@@ -205,10 +205,9 @@ public class GLCanvas extends Canvas implements GLAutoDrawable, GLSharedContextS
                  animatorPaused = false;
              }
 
-             if ( null != context ) {
+             GLException exceptionOnDisposeGL = null;
+             if( null != context ) {
                  if( context.isCreated() ) {
-                     // Catch dispose GLExceptions by GLEventListener, just 'print' them
-                     // so we can continue with the destruction.
                      try {
                          if( !GLCanvas.this.isDisposed() ) {
                              helper.disposeGL(GLCanvas.this, context, true);
@@ -216,28 +215,50 @@ public class GLCanvas extends Canvas implements GLAutoDrawable, GLSharedContextS
                              context.destroy();
                          }
                      } catch (final GLException gle) {
-                         gle.printStackTrace();
+                         exceptionOnDisposeGL = gle;
                      }
                  }
                  context = null;
              }
-             if ( null != drawable ) {
-                 drawable.setRealized(false);
+
+             Throwable exceptionOnUnrealize = null;
+             if( null != drawable ) {
+                 try {
+                     drawable.setRealized(false);
+                 } catch( final Throwable re ) {
+                     exceptionOnUnrealize = re;
+                 }
                  drawable = null;
              }
-             if( 0 != x11Window) {
-                 SWTAccessor.destroyX11Window(screen.getDevice(), x11Window);
-                 x11Window = 0;
-             } else if( 0 != gdkWindow) {
-                 SWTAccessor.destroyGDKWindow(gdkWindow);
-                 gdkWindow = 0;
+
+             Throwable exceptionOnDeviceClose = null;
+             try {
+                 if( 0 != x11Window) {
+                     SWTAccessor.destroyX11Window(screen.getDevice(), x11Window);
+                     x11Window = 0;
+                 } else if( 0 != gdkWindow) {
+                     SWTAccessor.destroyGDKWindow(gdkWindow);
+                     gdkWindow = 0;
+                 }
+                 screen.getDevice().close();
+             } catch (final Throwable re) {
+                 exceptionOnDeviceClose = re;
              }
-             screen.getDevice().close();
 
              if (animatorPaused) {
                  animator.resume();
              }
 
+             // throw exception in order of occurrence ..
+             if( null != exceptionOnDisposeGL ) {
+                 throw exceptionOnDisposeGL;
+             }
+             if( null != exceptionOnUnrealize ) {
+                 throw GLException.newGLException(exceptionOnUnrealize);
+             }
+             if( null != exceptionOnDeviceClose ) {
+                 throw GLException.newGLException(exceptionOnDeviceClose);
+             }
          } finally {
              _lock.unlock();
          }
diff --git a/src/jogl/classes/javax/media/opengl/GLException.java b/src/jogl/classes/javax/media/opengl/GLException.java
index 6a287c969..15e9cddac 100644
--- a/src/jogl/classes/javax/media/opengl/GLException.java
+++ b/src/jogl/classes/javax/media/opengl/GLException.java
@@ -41,7 +41,7 @@ package javax.media.opengl;
 
 /** A generic exception for OpenGL errors used throughout the binding
     as a substitute for {@link RuntimeException}. */
-
+@SuppressWarnings("serial")
 public class GLException extends RuntimeException {
   /** Constructs a GLException object. */
   public GLException() {
@@ -65,4 +65,16 @@ public class GLException extends RuntimeException {
   public GLException(final Throwable cause) {
     super(cause);
   }
+
+  /** Constructs a GLException object with the specified root
+      cause with a decorating message including the current thread name. */
+  public static GLException newGLException(final Throwable t) {
+      return new GLException("Caught "+t.getClass().getSimpleName()+": "+t.getMessage()+" on thread "+Thread.currentThread().getName(), t);
+  }
+
+  /** Dumps a Throwable in a decorating message including the current thread name, and stack trace. */
+  public static void dumpThrowable(final Throwable t) {
+      System.err.println("Caught "+t.getClass().getSimpleName()+": "+t.getMessage()+" on thread "+Thread.currentThread().getName());
+      t.printStackTrace();
+  }
 }
diff --git a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
index 0599c1086..ca5cf0e45 100644
--- a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
+++ b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
@@ -1232,26 +1232,32 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable, WindowClosing
                 animatorPaused = false;
             }
 
+            GLException exceptionOnDisposeGL = null;
+
             // OLS will be detached by disposeGL's context destruction below
             if( null != context ) {
                 if( context.isCreated() ) {
-                    // Catch dispose GLExceptions by GLEventListener, just 'print' them
-                    // so we can continue with the destruction.
                     try {
                         helper.disposeGL(GLCanvas.this, context, true);
                         if(DEBUG) {
                             System.err.println(getThreadName()+": destroyOnEDTAction() - post ctx: "+context);
                         }
                     } catch (final GLException gle) {
-                        gle.printStackTrace();
+                        exceptionOnDisposeGL = gle;
                     }
                 }
                 context = null;
             }
+
+            Throwable exceptionOnUnrealize = null;
             if( null != drawable ) {
-                drawable.setRealized(false);
-                if(DEBUG) {
-                    System.err.println(getThreadName()+": destroyOnEDTAction() - post drawable: "+drawable);
+                try {
+                    drawable.setRealized(false);
+                    if(DEBUG) {
+                        System.err.println(getThreadName()+": destroyOnEDTAction() - post drawable: "+drawable);
+                    }
+                } catch( final Throwable re ) {
+                    exceptionOnUnrealize = re;
                 }
                 drawable = null;
             }
@@ -1260,6 +1266,14 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable, WindowClosing
                 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);
             }
diff --git a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java b/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
index 6e6bb1cad..d08839b7f 100644
--- a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
+++ b/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
@@ -1338,20 +1338,33 @@ public class GLJPanel extends JPanel implements AWTGLAutoDrawable, WindowClosing
         if ( null != backend ) {
             final GLContext _context = backend.getContext();
             final boolean backendDestroy = !backend.isUsingOwnLifecycle();
+
+            GLException exceptionOnDisposeGL = null;
             if( null != _context && _context.isCreated() ) {
-                // Catch dispose GLExceptions by GLEventListener, just 'print' them
-                // so we can continue with the destruction.
                 try {
                     helper.disposeGL(GLJPanel.this, _context, !backendDestroy);
                 } catch (final GLException gle) {
-                    gle.printStackTrace();
+                    exceptionOnDisposeGL = gle;
                 }
             }
+            Throwable exceptionBackendDestroy = null;
             if ( backendDestroy ) {
-                backend.destroy();
+                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);
+            }
         }
     }
   };
diff --git a/src/jogl/classes/jogamp/opengl/GLAutoDrawableBase.java b/src/jogl/classes/jogamp/opengl/GLAutoDrawableBase.java
index 45240df29..016d07ed6 100644
--- a/src/jogl/classes/jogamp/opengl/GLAutoDrawableBase.java
+++ b/src/jogl/classes/jogamp/opengl/GLAutoDrawableBase.java
@@ -356,25 +356,48 @@ public abstract class GLAutoDrawableBase implements GLAutoDrawable, GLStateKeepe
             preserveGLStateAtDestroy(false);
             preserveGLEventListenerState();
         }
+
+        GLException exceptionOnDisposeGL = null;
         if( null != context ) {
             if( context.isCreated() ) {
-                // Catch dispose GLExceptions by GLEventListener, just 'print' them
-                // so we can continue with the destruction.
                 try {
                     helper.disposeGL(this, context, true);
                 } catch (final GLException gle) {
-                    gle.printStackTrace();
+                    exceptionOnDisposeGL = gle;
                 }
             }
             context = null;
         }
+
+        final AbstractGraphicsDevice device = drawable.getNativeSurface().getGraphicsConfiguration().getScreen().getDevice();
+        Throwable exceptionOnUnrealize = null;
         if( null != drawable ) {
-            final AbstractGraphicsDevice device = drawable.getNativeSurface().getGraphicsConfiguration().getScreen().getDevice();
-            drawable.setRealized(false);
+            try {
+                drawable.setRealized(false);
+            } catch( final Throwable re ) {
+                exceptionOnUnrealize = re;
+            }
             drawable = null;
+        }
+
+        Throwable exceptionOnDeviceClose = null;
+        try {
             if( ownsDevice ) {
                 device.close();
             }
+        } catch (final Throwable re) {
+            exceptionOnDeviceClose = re;
+        }
+
+        // throw exception in order of occurrence ..
+        if( null != exceptionOnDisposeGL ) {
+            throw exceptionOnDisposeGL;
+        }
+        if( null != exceptionOnUnrealize ) {
+            throw GLException.newGLException(exceptionOnUnrealize);
+        }
+        if( null != exceptionOnDeviceClose ) {
+            throw GLException.newGLException(exceptionOnDeviceClose);
         }
     }
 
diff --git a/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java b/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
index 7d05174ce..6462b801b 100644
--- a/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
+++ b/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
@@ -511,15 +511,24 @@ public class GLDrawableHelper {
    * </p>
    * @param autoDrawable
    * @return the disposal count
+   * @throws GLException caused by {@link GLEventListener#dispose(GLAutoDrawable)}
    */
-  public final int disposeAllGLEventListener(final GLAutoDrawable autoDrawable, final boolean remove) {
+  public final int disposeAllGLEventListener(final GLAutoDrawable autoDrawable, final boolean remove) throws GLException {
+    Throwable firstCaught = null;
     int disposeCount = 0;
     synchronized(listenersLock) {
         if( remove ) {
             for (int count = listeners.size(); 0 < count && 0 < listeners.size(); count--) {
               final GLEventListener listener = listeners.remove(0);
               if( !listenersToBeInit.remove(listener) ) {
-                  listener.dispose(autoDrawable);
+                  try {
+                      listener.dispose(autoDrawable);
+                  } catch (final Throwable t) {
+                      if( null == firstCaught ) {
+                          firstCaught = t;
+                      }
+                      GLException.dumpThrowable(t);
+                  }
                   disposeCount++;
               }
             }
@@ -527,13 +536,23 @@ public class GLDrawableHelper {
             for (int i = 0; i < listeners.size(); i++) {
               final GLEventListener listener = listeners.get(i);
               if( !listenersToBeInit.contains(listener) ) {
-                  listener.dispose(autoDrawable);
+                  try {
+                      listener.dispose(autoDrawable);
+                  } catch (final Throwable t) {
+                      if( null == firstCaught ) {
+                          firstCaught = t;
+                      }
+                      GLException.dumpThrowable(t);
+                  }
                   listenersToBeInit.add(listener);
                   disposeCount++;
               }
             }
         }
     }
+    if( null != firstCaught ) {
+        throw GLException.newGLException(firstCaught);
+    }
     return disposeCount;
   }
 
@@ -1048,8 +1067,7 @@ public class GLDrawableHelper {
             try {
                 forceNativeRelease(context);
             } catch (final Throwable ex) {
-                ex.printStackTrace();
-                throw new GLException(ex);
+                throw GLException.newGLException(ex);
             }
         }
         exclusiveContextThread = t;
@@ -1105,8 +1123,8 @@ public class GLDrawableHelper {
                              final Runnable  initAction) {
     if(null==context) {
         if (DEBUG) {
-            final Exception e = new GLException(getThreadName()+" Info: GLDrawableHelper " + this + ".invokeGL(): NULL GLContext");
-            e.printStackTrace();
+            final Exception e = new GLException("Info: GLDrawableHelper " + this + ".invokeGL(): NULL GLContext");
+            GLException.dumpThrowable(e);
         }
         return;
     }
@@ -1131,9 +1149,11 @@ public class GLDrawableHelper {
    * @param autoDrawable
    * @param context
    * @param destroyContext destroy context in the end while holding the lock
+   * @throws GLException caused by {@link GLEventListener#dispose(GLAutoDrawable)} or context closing
+   *
    */
   public final void disposeGL(final GLAutoDrawable autoDrawable,
-                              final GLContext context, final boolean destroyContext) {
+                              final GLContext context, final boolean destroyContext) throws GLException {
     // Support for recursive makeCurrent() calls as well as calling
     // other drawables' display() methods from within another one's
     GLContext lastContext = GLContext.getCurrent();
@@ -1148,15 +1168,22 @@ public class GLDrawableHelper {
         }
     }
 
+    GLException disposeCaught = null;
+    Throwable contextCloseCaught = null;
+
     int res;
     try {
       res = context.makeCurrent();
       if (GLContext.CONTEXT_NOT_CURRENT != res) {
         if(GLContext.CONTEXT_CURRENT_NEW == res) {
-            throw new GLException(getThreadName()+" GLDrawableHelper " + this + ".invokeGL(): Dispose case (no init action given): Native context was not created (new ctx): "+context);
+            throw new GLException(GLDrawableHelper.getThreadName()+" GLDrawableHelper " + this + ".invokeGL(): Dispose case (no init action given): Native context was not created (new ctx): "+context);
         }
         if( listeners.size() > 0 && null != autoDrawable ) {
-            disposeAllGLEventListener(autoDrawable, false);
+            try {
+                disposeAllGLEventListener(autoDrawable, false);
+            } catch(final GLException t) {
+                disposeCaught = t;
+            }
         }
       }
     } finally {
@@ -1167,9 +1194,9 @@ public class GLDrawableHelper {
               forceNativeRelease(context);
           }
           flushGLRunnables();
-      } catch (final Exception e) {
-          System.err.println("Caught exception on thread "+getThreadName());
-          e.printStackTrace();
+      } catch (final Throwable t) {
+          GLException.dumpThrowable(t);
+          contextCloseCaught = t;
       }
       if (lastContext != null) {
         final int res2 = lastContext.makeCurrent();
@@ -1177,6 +1204,12 @@ public class GLDrawableHelper {
           lastInitAction.run();
         }
       }
+      if( null != disposeCaught ) {
+          throw disposeCaught;
+      }
+      if( null != contextCloseCaught ) {
+          throw GLException.newGLException(contextCloseCaught);
+      }
     }
   }
 
@@ -1186,6 +1219,9 @@ public class GLDrawableHelper {
           final Runnable  initAction) {
       final Thread currentThread = Thread.currentThread();
 
+      Throwable glEventListenerCaught = null;
+      Throwable contextReleaseCaught = null;
+
       // Exclusive Cases:
       //   1: lock - unlock  : default
       //   2: lock - -       : exclusive,    not locked yet
@@ -1243,6 +1279,9 @@ public class GLDrawableHelper {
                   if ( autoSwapBufferMode ) {
                       drawable.swapBuffers();
                   }
+              } catch (final Throwable t) {
+                  GLException.dumpThrowable(t);
+                  glEventListenerCaught = t;
               } finally {
                   if( _releaseExclusiveThread ) {
                       exclusiveContextThread = null;
@@ -1253,9 +1292,9 @@ public class GLDrawableHelper {
                   if( releaseContext ) {
                       try {
                           context.release();
-                      } catch (final Exception e) {
-                          System.err.println("Caught exception on thread "+getThreadName());
-                          e.printStackTrace();
+                      } catch (final Throwable t) {
+                          GLException.dumpThrowable(t);
+                          contextReleaseCaught = t;
                       }
                   }
               }
@@ -1267,6 +1306,12 @@ public class GLDrawableHelper {
                   lastInitAction.run();
               }
           }
+          if( null != glEventListenerCaught ) {
+              throw GLException.newGLException(glEventListenerCaught);
+          }
+          if( null != contextReleaseCaught ) {
+              throw GLException.newGLException(contextReleaseCaught);
+          }
       }
   }
 
@@ -1276,6 +1321,9 @@ public class GLDrawableHelper {
           final Runnable  initAction) {
       final Thread currentThread = Thread.currentThread();
 
+      Throwable glEventListenerCaught = null;
+      Throwable contextReleaseCaught = null;
+
       // Exclusive Cases:
       //   1: lock - unlock  : default
       //   2: lock - -       : exclusive, not locked yet
@@ -1347,6 +1395,9 @@ public class GLDrawableHelper {
                       tdX = System.currentTimeMillis();
                       tdS = tdX - tdS; // swapBuffers
                   }
+              } catch (final Throwable t) {
+                  GLException.dumpThrowable(t);
+                  glEventListenerCaught = t;
               } finally {
                   if( _releaseExclusiveThread ) {
                       exclusiveContextSwitch = 0;
@@ -1359,9 +1410,9 @@ public class GLDrawableHelper {
                       try {
                           context.release();
                           ctxReleased = true;
-                      } catch (final Exception e) {
-                          System.err.println("Caught exception on thread "+getThreadName());
-                          e.printStackTrace();
+                      } catch (final Throwable t) {
+                          GLException.dumpThrowable(t);
+                          contextReleaseCaught = t;
                       }
                   }
               }
@@ -1374,11 +1425,16 @@ public class GLDrawableHelper {
                   lastInitAction.run();
               }
           }
+          if( null != glEventListenerCaught ) {
+              throw GLException.newGLException(glEventListenerCaught);
+          }
+          if( null != contextReleaseCaught ) {
+              throw GLException.newGLException(contextReleaseCaught);
+          }
       }
       final long td = System.currentTimeMillis() - t0;
       System.err.println("td0 "+td+"ms, fps "+(1.0/(td/1000.0))+", td-makeCurrent: "+tdA+"ms, td-render "+tdR+"ms, td-swap "+tdS+"ms, td-release "+tdX+"ms, ctx claimed: "+ctxClaimed+", ctx release: "+ctxReleased+", ctx destroyed "+ctxDestroyed);
   }
 
   protected static String getThreadName() { return Thread.currentThread().getName(); }
-
 }
diff --git a/src/jogl/classes/jogamp/opengl/GLFBODrawableImpl.java b/src/jogl/classes/jogamp/opengl/GLFBODrawableImpl.java
index 2d0f8f70b..a779fed3b 100644
--- a/src/jogl/classes/jogamp/opengl/GLFBODrawableImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLFBODrawableImpl.java
@@ -322,10 +322,10 @@ public class GLFBODrawableImpl extends GLDrawableImpl implements GLFBODrawable {
             }
         }
         if(null != tFBO) {
-            throw new GLException("GLFBODrawableImpl.reset(..) FBObject.reset(..) exception", tFBO);
+            throw GLException.newGLException(tFBO);
         }
         if(null != tGL) {
-            throw new GLException("GLFBODrawableImpl.reset(..) GLContext.release() exception", tGL);
+            throw GLException.newGLException(tGL);
         }
         if(DEBUG) {
             System.err.println("GLFBODrawableImpl.reset(newSamples "+newSamples+"): END "+this);
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLException01NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLException01NEWT.java
new file mode 100644
index 000000000..a2dca2dda
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLException01NEWT.java
@@ -0,0 +1,235 @@
+/**
+ * Copyright 2011 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.opengl.test.junit.jogl.acore;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.opengl.test.junit.util.MiscUtils;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.Animator;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
+
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLProfile;
+
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.FixMethodOrder;
+import org.junit.runners.MethodSorters;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestGLException01NEWT extends UITestCase {
+    static GLProfile glp;
+    static int width, height;
+
+    @BeforeClass
+    public static void initClass() {
+        glp = GLProfile.getGL2ES2();
+        Assert.assertNotNull(glp);
+        width  = 512;
+        height = 512;
+    }
+
+    public static void dumpThrowable(final Throwable t) {
+        System.err.println("User caught exception "+t.getClass().getSimpleName()+": "+t.getMessage()+" on thread "+Thread.currentThread().getName());
+        t.printStackTrace();
+    }
+
+    protected void runTestGL(final GLCapabilities caps, final boolean onThread,
+                             final boolean throwInInit, final boolean throwInDisplay,
+                             final boolean throwInReshape, final boolean throwInDispose) throws InterruptedException {
+        final GLWindow glWindow = GLWindow.create(caps);
+        Assert.assertNotNull(glWindow);
+        glWindow.setTitle("NEWT Exception Test");
+        final GearsES2 demo1 = new GearsES2();
+        demo1.setVerbose(false);
+        glWindow.addGLEventListener(demo1);
+        final AtomicInteger initCount = new AtomicInteger();
+        final AtomicInteger disposeCount = new AtomicInteger();
+        final AtomicInteger displayCount = new AtomicInteger();
+        final AtomicInteger reshapeCount = new AtomicInteger();
+        final AtomicInteger exceptionSent = new AtomicInteger();
+
+        glWindow.addGLEventListener(new GLEventListener() {
+            @Override
+            public void init(final GLAutoDrawable drawable) {
+                if( throwInInit && 0 == exceptionSent.get() ) {
+                    exceptionSent.incrementAndGet();
+                    throw new RuntimeException("Injected GLEventListener exception in init");
+                }
+            }
+            @Override
+            public void dispose(final GLAutoDrawable drawable) {
+                if( throwInDispose && 0 == exceptionSent.get() ) {
+                    exceptionSent.incrementAndGet();
+                    throw new RuntimeException("Injected GLEventListener exception in dispose");
+                }
+            }
+            @Override
+            public void display(final GLAutoDrawable drawable) {
+                if( throwInDisplay && 0 == exceptionSent.get() ) {
+                    exceptionSent.incrementAndGet();
+                    throw new RuntimeException("Injected GLEventListener exception in display");
+                }
+            }
+            @Override
+            public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
+                if( throwInReshape && 0 == exceptionSent.get() ) {
+                    exceptionSent.incrementAndGet();
+                    throw new RuntimeException("Injected GLEventListener exception in reshape");
+                }
+            }
+        });
+        glWindow.addGLEventListener(new GLEventListener() {
+            @Override
+            public void init(final GLAutoDrawable drawable) {
+                initCount.incrementAndGet();
+            }
+            @Override
+            public void dispose(final GLAutoDrawable drawable) {
+                disposeCount.incrementAndGet();
+            }
+            @Override
+            public void display(final GLAutoDrawable drawable) {
+                displayCount.incrementAndGet();
+            }
+            @Override
+            public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
+                reshapeCount.incrementAndGet();
+            }
+        });
+
+        RuntimeException execptionAtInitReshapeDisplay = null;
+        RuntimeException execptionAtDispose = null;
+
+        final Animator animator = !onThread ? new Animator(glWindow) : null;
+
+        glWindow.setSize(width, height);
+
+        if( !onThread ) {
+            animator.setUpdateFPSFrames(1, null);
+            animator.start();
+        }
+        try {
+            glWindow.setVisible(true);
+        } catch (final RuntimeException re) {
+            execptionAtInitReshapeDisplay = re;
+            dumpThrowable(re);
+        }
+
+        final long t0 = System.currentTimeMillis();
+        long t1 = t0;
+        while(0 == exceptionSent.get() && ( onThread || animator.isAnimating() ) && t1-t0<duration ) {
+            if( onThread ) {
+                try {
+                    glWindow.display();
+                } catch (final RuntimeException re) {
+                    execptionAtInitReshapeDisplay = re;
+                    dumpThrowable(re);
+                }
+            }
+            Thread.sleep(100);
+            t1 = System.currentTimeMillis();
+        }
+
+        if( !onThread ) {
+            animator.stop();
+        }
+        try {
+            glWindow.destroy();
+        } catch (final RuntimeException re) {
+            execptionAtDispose = re;
+            dumpThrowable(re);
+        }
+
+        if( throwInInit || throwInReshape || throwInDisplay || throwInDispose ) {
+            Assert.assertEquals("Not one exception sent", 1, exceptionSent.get());
+            if( throwInInit ) {
+                Assert.assertNotNull("No exception forwarded from init", execptionAtInitReshapeDisplay);
+            }
+            if( throwInReshape ) {
+                Assert.assertNotNull("No exception forwarded from reshape", execptionAtInitReshapeDisplay);
+            }
+            if( throwInDisplay ) {
+                Assert.assertNotNull("No exception forwarded from display", execptionAtInitReshapeDisplay);
+            }
+            if( throwInDispose ) {
+                Assert.assertNotNull("No exception forwarded from dispose", execptionAtDispose);
+            }
+        }
+    }
+
+    @Test
+    public void test01OnThreadAtInit() throws InterruptedException {
+        final GLCapabilities caps = new GLCapabilities(glp);
+        caps.setBackgroundOpaque(true); // default
+        runTestGL(caps, true /* onThread */, true /* init */, false /* display */, false /* reshape */, false /* dispose */);
+    }
+    @Test
+    public void test02OnThreadAtReshape() throws InterruptedException {
+        final GLCapabilities caps = new GLCapabilities(glp);
+        caps.setBackgroundOpaque(true); // default
+        runTestGL(caps, true /* onThread */, false /* init */, false /* display */, true /* reshape */, false /* dispose */);
+    }
+    @Test
+    public void test03OnThreadAtDisplay() throws InterruptedException {
+        final GLCapabilities caps = new GLCapabilities(glp);
+        caps.setBackgroundOpaque(true); // default
+        runTestGL(caps, true /* onThread */, false /* init */, true /* display */, false /* reshape */, false /* dispose */);
+    }
+    @Test
+    public void test04OnThreadAtDispose() throws InterruptedException {
+        final GLCapabilities caps = new GLCapabilities(glp);
+        caps.setBackgroundOpaque(true); // default
+        runTestGL(caps, true /* onThread */, false /* init */, false /* display */, false /* reshape */, true /* dispose */);
+    }
+
+    static long duration = 500; // ms
+
+    public static void main(final String args[]) {
+        boolean waitForKey = false;
+
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                i++;
+                duration = MiscUtils.atol(args[i], duration);
+            } else if(args[i].equals("-wait")) {
+                waitForKey = true;
+            }
+        }
+        if( waitForKey ) {
+            UITestCase.waitForKey("main");
+        }
+        org.junit.runner.JUnitCore.main(TestGLException01NEWT.class.getName());
+    }
+}