+- (NSDictionary *)getGLProperties;
+- (void)addExtraRenderbuffers:(CGSize)size;
+- (NSString *)getCAGravity;
+- (void)orientationChanged;
+@property (nonatomic, assign) id<XScreenSaverViewDelegate> delegate;
+@property (nonatomic) BOOL ignoreRotation;
+- (BOOL)suppressRotationAnimation;
+- (BOOL)rotateTouches;
+#else // !USE_IPHONE
+- (NSOpenGLPixelFormat *)getGLPixelFormat;
+#endif // !USE_IPHONE
+
+- (void)enableBackbuffer:(CGSize)new_backbuffer_size;
+- (void)setViewport;
+- (void)createBackbuffer:(CGSize)s;
+- (void)reshape_x11;
+#ifdef JWXYZ_QUARTZ
+- (void)drawBackbuffer;
+#endif // JWXYZ_QUARTZ
+- (void)flushBackbuffer;