message: Fix GPU deep-copy
diff: @@ -2515,9 +2515,11 @@ int main(int argc, char** argv)
  assert(index < size_t(-1));
  - rend.device_top_level_bvh.primitives()[i] = {
  + int indirect_index = rend.host_top_level_bvh.indices()[i];
  +
  + rend.device_top_level_bvh.primitives()[indirect_index] = {
  rend.device_bvhs[index].ref(),
  - inverse(rend.host_instances[i].transform_inv())
  + inverse(rend.host_top_level_bvh.primitive(i).transform_inv())
  };
  }
  