message: create a material child for XYZ files
diff: @@ -46,6 +46,7 @@ namespace ospray {
  int(sizeof(particle::Model::Atom)));
  spGeom->createChild("offset_center", "int", int(0));
  spGeom->createChild("offset_radius", "int", int(3*sizeof(float)));
  + spGeom->createChild("material", "Material");
  auto spheres =
  std::make_shared<DataVectorT<particle::Model::Atom, OSP_RAW>>();
  