message: Add host/device tags
diff: @@ -145,6 +145,7 @@ struct R2 {};
  struct R1 : R2 {};
  template <typename P, typename T>
  +VSNRAY_FUNC
  inline auto test_shade_record_type(R1)
  -> decltype(
  std::declval<P>().textures,
  @@ -152,6 +153,7 @@ inline auto test_shade_record_type(R1)
  );
  template <typename P, typename T>
  +VSNRAY_FUNC
  inline auto test_shade_record_type(R2)
  -> shade_record<typename P::light_type, T>;
  