message: Comments for generic primitives
diff: @@ -15,6 +15,10 @@ namespace visionaray
  //-------------------------------------------------------------------------------------------------
  // Generic primitive
  //
  +// Type that is based on variant; by using a tagged union, primitive types stored in an
  +// accelerator like this don't require virtual inheritance. This is a performance optimization
  +// to avoid virtual inheritance in inner loops
  +//
  template <typename ...Ts>
  class generic_primitive;
  