Bug 642 / Refine 1ae0737f34143a5ed655bd9c4d5fe9b0437c7774: GLCanvas.displayOnEDT: Also check null!=drawable

As for 1ae0737f34143a5ed655bd9c4d5fe9b0437c7774, an animator may inject a display Runnable on the EDT
before AWT destruction. In case this Runnable is executed after destruction on the EDT - it would fail.

2 files changed, 4 insertions, 4 deletions

diff --git a/make/scripts/tests.sh b/make/scripts/tests.sh
index 9187ba162..6f6438267 100755
--- a/make/scripts/tests.sh
+++ b/make/scripts/tests.sh
@@ -276,7 +276,7 @@ function testawtswt() {
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextListNEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextListNEWT2 $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES1NEWT $*
-testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT $*
+#testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGLContextDrawableSwitchNEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGLPointsNEWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGLUnitsNEWT $*
@@ -392,7 +392,7 @@ testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestSharedContextVBOES2NEWT $*
 #
 # newt.awt (testawt)
 #
-#testawt com.jogamp.opengl.test.junit.jogl.newt.TestSwingAWTRobotUsageBeforeJOGLInitBug411 $*
+testawt com.jogamp.opengl.test.junit.jogl.newt.TestSwingAWTRobotUsageBeforeJOGLInitBug411 $*
 #testawt com.jogamp.opengl.test.junit.jogl.demos.gl2.newt.TestGearsNewtAWTWrapper $*
 #testawt com.jogamp.opengl.test.junit.newt.TestEventSourceNotAWTBug
 #testawt com.jogamp.opengl.test.junit.newt.TestFocus01SwingAWTRobot $*
diff --git a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
index 3877a7997..efdc69ed8 100644
--- a/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
+++ b/src/jogl/classes/javax/media/opengl/awt/GLCanvas.java
@@ -1024,7 +1024,7 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable, WindowClosing
         final RecursiveLock _lock = lock;
         _lock.lock();
         try {
-            if( drawable.isRealized() ) {
+            if( null != drawable && drawable.isRealized() ) {
                 helper.invokeGL(drawable, context, displayAction, initAction);
             }
         } finally {
@@ -1039,7 +1039,7 @@ public class GLCanvas extends Canvas implements AWTGLAutoDrawable, WindowClosing
         final RecursiveLock _lock = lock;
         _lock.lock();
         try {
-            if(null != drawable && drawable.isRealized() ) {
+            if( null != drawable && drawable.isRealized() ) {
                 drawable.swapBuffers();
             }
         } finally {