#include <simgear/scene/util/SGUpdateVisitor.hxx>
#include <simgear/scene/util/SGNodeMasks.hxx>
#include <simgear/scene/util/QuadTreeBuilder.hxx>
-#include <simgear/threads/SGThread.hxx>
-#include <simgear/threads/SGGuard.hxx>
#include "SGTexturedTriangleBin.hxx"
#include "SGLightBin.hxx"