message: setting tf params to required
diff: @@ -28,8 +28,8 @@ namespace ospray {
  {
  TransferFunction::commit();
  - colorValues = getParamDataT<vec3f>("color");
  - opacityValues = getParamDataT<float>("opacity");
  + colorValues = getParamDataT<vec3f>("color", true);
  + opacityValues = getParamDataT<float>("opacity", true);
  ispc::LinearTransferFunction_set(
  ispcEquivalent, ispc(colorValues), ispc(opacityValues));
  