+ inline virtual int GetTextureTarget() const {return GL_TEXTURE_EXTERNAL_OES;};
+ inline virtual const char* GetCustomFragmentPrefix() const {return "#extension GL_OES_EGL_image_external:require\n";};
+ inline const char* GetCustomSamplerTypename() const override { return "samplerExternalOES"; };
+
+ inline Any GetNativeImageHandle() const override { return nullptr; };
+ inline bool SourceChanged() const override { return false; };
+
+ inline virtual Dali::NativeImageInterface::Extension* GetExtension() {return nullptr;}