message: Gracefully handle unsupported morph targets
diff: @@ -358,6 +358,11 @@ namespace ospray {
  t->values.push_back(quaternionf(v.w, v.x, v.y, v.z));
  }
  }
  + if (c.target_path == "weights") {
  + WARN << "animating weights of morph targets not implemented yet"
  + << std::endl;
  + continue;
  + }
  track->interpolation = InterpolationMode::STEP;
  if (s.interpolation == "LINEAR")
  