+ void AllocateMaskData();
+
+ /**
+ * @brief Check whether the mask texture is loaded or not.
+ * If MaskingType is MASKING_ON_LOADING and mask texture is failed to load, update shader.
+ */
+ void CheckMaskTexture();
+
+ /**
+ * @brief Callback when the inherited visibility of the actor is changed.
+ */
+ void OnControlInheritedVisibilityChanged(Actor actor, bool visible);
+
+ /**
+ * @brief Callback when the visibility of the window is changed.
+ */
+ void OnWindowVisibilityChanged(Window window, bool visible);