UpstreamSurfaceHook: Add 'NativeSurface getUpstreamSurface()' (from EGLUpstreamSurfaceHook) to generalize ProxySurfaceImpl.getUpstreamSurface()

1 files changed, 11 insertions, 0 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
index ec0935c18..fbe5fedc4 100644
--- a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
+++ b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
@@ -468,6 +468,17 @@ public class GLCanvas extends Canvas implements GLAutoDrawable, GLSharedContextS
        public String toString() {
            return "SWTCanvasUpstreamSurfaceHook[upstream: "+GLCanvas.this.toString()+", "+clientArea.width+"x"+clientArea.height+"]";
        }
+
+       /**
+        * {@inheritDoc}
+        * <p>
+        * Returns <code>null</code>.
+        * </p>
+        */
+       @Override
+       public final NativeSurface getUpstreamSurface() {
+           return null;
+       }
    };
 
    protected final void updateSizeCheck() {