1 files changed, 49 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLDummyUpstreamSurfaceHook.java b/src/jogl/classes/jogamp/opengl/egl/EGLDummyUpstreamSurfaceHook.java
new file mode 100644
index 000000000..b172d4f35
--- /dev/null
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLDummyUpstreamSurfaceHook.java
@@ -0,0 +1,49 @@
+package jogamp.opengl.egl;
+
+import javax.media.nativewindow.NativeSurface;
+import javax.media.nativewindow.ProxySurface;
+import javax.media.nativewindow.UpstreamSurfaceHook;
+
+import com.jogamp.nativewindow.UpstreamSurfaceHookMutableSize;
+import com.jogamp.nativewindow.egl.EGLGraphicsDevice;
+
+public class EGLDummyUpstreamSurfaceHook extends UpstreamSurfaceHookMutableSize {
+    /**
+     * @param width the initial width as returned by {@link NativeSurface#getWidth()} via {@link UpstreamSurfaceHook#getWidth(ProxySurface)}, 
+     *        not the actual dummy surface width. 
+     *        The latter is platform specific and small
+     * @param height the initial height as returned by {@link NativeSurface#getHeight()} via {@link UpstreamSurfaceHook#getHeight(ProxySurface)}, 
+     *        not the actual dummy surface height,
+     *        The latter is platform specific and small
+     */
+    public EGLDummyUpstreamSurfaceHook(int width, int height) {
+        super(width, height);
+    }
+    
+    @Override
+    public final void create(ProxySurface s) {
+        final EGLGraphicsDevice eglDevice = (EGLGraphicsDevice) s.getGraphicsConfiguration().getScreen().getDevice();
+        if(0 == eglDevice.getHandle()) {
+            eglDevice.open();
+            s.addUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_DEVICE );
+        }
+        if( EGL.EGL_NO_SURFACE == s.getSurfaceHandle() ) {
+            s.setSurfaceHandle( EGLDrawableFactory.createPBufferSurfaceImpl((EGLGraphicsConfiguration)s.getGraphicsConfiguration(), 64, 64, false) );
+            s.addUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_SURFACE );            
+        }
+        s.addUpstreamOptionBits(ProxySurface.OPT_UPSTREAM_WINDOW_INVISIBLE);
+    }
+    
+    @Override
+    public final void destroy(ProxySurface s) {
+        if( s.containsUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_SURFACE ) ) {
+            final EGLGraphicsDevice eglDevice = (EGLGraphicsDevice) s.getGraphicsConfiguration().getScreen().getDevice();
+            if( EGL.EGL_NO_SURFACE == s.getSurfaceHandle() ) {
+                throw new InternalError("Owns upstream surface, but no EGL surface: "+s);
+            }
+            EGL.eglDestroySurface(eglDevice.getHandle(), s.getSurfaceHandle());
+            s.setSurfaceHandle(EGL.EGL_NO_SURFACE);
+            s.clearUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_SURFACE );
+        }
+    }
+}