anchor.diff:          let inactive = ConcurrentHashQueue<GeometryRef>()
           let mutable inactiveSize = 0L
           let mutable activeSize = 0L
  -        let mutable activeCount = 0
  -        let mutable desiredCount = 0
   
           let mutable pendingRemoves = 0
           let geometries = System.Collections.Concurrent.ConcurrentDictionary<LodDataNode, LoadResult>()
  
positive.code:                     | Some (:? IMod<V2i> as vs) -> vs
                      | _ -> failwith "[PointCloud] could not get viewport size (please apply to scenegraph)"
  
              let h = PointCloudHandler(l, view, proj, viewportSize, l.Runtime)
  
              let calls = h.DrawCallInfos
  
  
negative.code:                 async {
                      while true do
                          do! Async.Sleep(1000)
                          printfn "active = %A / desired = %A / count = %A / inactiveCnt=%d / inactive=%A" progress.ActiveNodeCount progress.ExpectedNodeCount geometries.Count inactive.Count inactiveSize
                          ()
                  }
  
  