 ID scene = rtcDeviceNewScene(EXPR device,EXPR sflags,EXPR aflags);
 =>
 scene = rtcNewScene(device);
-COMMENT rtcSetSceneFlags(scene,sflags); // FIXME: set proper scene flags
-COMMENT rtcSetSceneBuildQuality(scene,sflags); // FIXME: set proper build quality
+COMMENT rtcSetSceneFlags(scene,sflags); // EMBREE_FIXME: set proper scene flags
+COMMENT rtcSetSceneBuildQuality(scene,sflags); // EMBREE_FIXME: set proper build quality
 }@@
 
 @@{

  RTCRayN* uniform ray_in = args->ray;
  RTCHitN* uniform hit_in = args->hit;
  uniform unsigned int N_in = args->N;
  #warning FIXME: function may get called with zero valid mask
  #warning FIXME: reject hit through *valid_in = 0 instead of ray_in.geomID = RTC_INVALID_GEOMETRY_ID;
}@@

@@{

  uniform unsigned int time_in = args->timeStep;
  const float* uniform u_in = args->u;
  const float* uniform v_in = args->v;
  const float* uniform nx_in = args->Ng_x; // EMBREE_FIXME: negate Ng
  const float* uniform ny_in = args->Ng_y;
  const float* uniform nz_in = args->Ng_z;
  float* uniform px_in = args->P_x;
