message: Accessors to allocator's hc::accelerator
diff: @@ -98,6 +98,18 @@ public:
  return !(*this == rhs);
  }
  + VSNRAY_CPU_FUNC
  + hc::accelerator& accelerator()
  + {
  + return accelerator_;
  + }
  +
  + VSNRAY_CPU_FUNC
  + hc::accelerator const& accelerator() const
  + {
  + return accelerator_;
  + }
  +
  private:
  hc::accelerator accelerator_;
  