+ * @brief Generate a shader by the current properties from each sub classes's own shader-generate logic.
+ * @param[in] factoryCache The visual factory cache to store the generated shader.
+ * @return If the function defined, Generated shader by the current properties. Else, empty shader.
+ */
+ virtual Dali::Shader GenerateShader() const
+ {
+ return Dali::Shader();
+ }
+
+ /**