Added optimized path to GLDrawableHelper for situation where

GLWorkerThread is being used; last context made current on that thread
is left current on that thread. In the case where only a single OpenGL
context is in use this eliminates the repeated calls to makeCurrent.
Ran into same NVidia driver bug causing crashes upon exit with
Java2D/OpenGL pipeline. Added workaround to GLDrawableHelper which can
be enabled with -Djogl.nvidia.crash.workaround, which just disables
this optimization. Fixed GLCanvas and GLPbufferImpl's destruction
paths to behave correctly in the face of the context being left
current on the GLWorkerThread. Updated code in Threading related to
GLWorkerThread to interoperate better with Java2D/OpenGL pipeline.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@629 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 24 insertions, 5 deletions

diff --git a/src/classes/javax/media/opengl/GLCanvas.java b/src/classes/javax/media/opengl/GLCanvas.java
index 0329e4017..d555a1df0 100644
--- a/src/classes/javax/media/opengl/GLCanvas.java
+++ b/src/classes/javax/media/opengl/GLCanvas.java
@@ -166,11 +166,19 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
       <B>Overrides:</B>
       <DL><DD><CODE>removeNotify</CODE> in class <CODE>java.awt.Component</CODE></DD></DL> */
   public void removeNotify() {
-    context.destroy();
-    drawable.setRealized(false);
-    super.removeNotify();
-    if (DEBUG) {
-      System.err.println("GLCanvas.removeNotify()");
+    try {
+      if (Threading.isSingleThreaded() &&
+          !Threading.isOpenGLThread()) {
+        Threading.invokeOnOpenGLThread(destroyAction);
+      } else {
+        context.destroy();
+      }
+    } finally {
+      drawable.setRealized(false);
+      super.removeNotify();
+      if (DEBUG) {
+        System.err.println("GLCanvas.removeNotify()");
+      }
     }
   }
 
@@ -289,6 +297,17 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
   private SwapBuffersOnEventDispatchThreadAction swapBuffersOnEventDispatchThreadAction =
     new SwapBuffersOnEventDispatchThreadAction();
 
+  class DestroyAction implements Runnable {
+    public void run() {
+      GLContext current = GLContext.getCurrent();
+      if (current == context) {
+        context.release();
+      }
+      context.destroy();
+    }
+  }
+  private DestroyAction destroyAction = new DestroyAction();
+
   // 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