GLDrawableFactory Cleanup (-> On- Offscreen and PBuffer)

    - Base all PBuffer/Offscreen GLDrawable creators on
      a prev. created 'NativeWindow + SurfaceChangeable' instance.
      Simplifies implementation path.

      This also removes the almost cyclic referencing of
          GLWindow -> OffscreenWindow
          GLWindow -> Drawable -> NullWindow -> OffscreenWindow
      Now it is just
          GLWindow -> OffscreenWindow
          GLWindow -> Drawable -> OffscreenWindow

    - createGLDrawable() shall be used for all types now,
      especially if you want to pass the offscreen NativeWindow
      and benefit from the surfaceChangedListener etc ..

    - Add public createOffscreenDrawable(..)

    - EGLDrawable:
        - Query surface only if not 0
        - [re]create surface only if needed,
          using 'ownEGL*' flag for destruction only.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java b/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
index fe55b2dbd..e4758211e 100644
--- a/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
+++ b/src/jogl/classes/javax/media/opengl/awt/GLJPanel.java
@@ -909,10 +909,11 @@ public class GLJPanel extends JPanel implements AWTGLAutoDrawable {
 
     public void initialize() {
       // Fall-through path: create an offscreen context instead
-      offscreenDrawable = factory.createOffscreenDrawable(offscreenCaps,
-                                                          chooser,
-                                                          Math.max(1, panelWidth),
-                                                          Math.max(1, panelHeight));
+      offscreenDrawable = (GLDrawableImpl) factory.createOffscreenDrawable(
+                                                offscreenCaps,
+                                                chooser,
+                                                Math.max(1, panelWidth),
+                                                Math.max(1, panelHeight));
       offscreenContext = (GLContextImpl) offscreenDrawable.createContext(shareWith);
       offscreenContext.setSynchronized(true);
       isInitialized = true;