void calculatevalid(){
       for (int i = 0; i < curp.Length; i++) //10ms !
      {
   if(curp[i].pos.z != 1000){
  validpos.Add(curp[i].pos);
    validcolor.Add(curp[i].color);
    }
       else{
 i += (int)curp[i].pos.x;
 }

if(i>curp.Length) break;
        }
    }
 void RunMain(AsyncGPUReadbackRequest r){
//print("suc");


//mp.GetComponent<TextMeshProUGUI>().text = (1f / Time.unscaledDeltaTime).ToString();



    cg.SetInt("Size",size) ;
    camrel = Camera.main.transform.position + new Vector3(50,50,50);
    cg.SetFloats("Cameraposition",camrel.x,camrel.y,camrel.z) ;
    cg.SetBuffer(0,"Result",texpix);
    cg.SetBuffer(0,"ResultFinal",final);
    cg.SetBuffer(0,"Meta",meta);
    cg.Dispatch(0,size /8,size /8,size /8);


  validpos.Clear();
  validcolor.Clear();


       curp = r.GetData<voxel>();
  //    print(curp.Length);


  readbackRequest = AsyncGPUReadback.Request(final,RunMain);


     thread1 = new Thread(calculatevalid);
thread1.Start();


 }