HRESULT hr;

  LPDIRECT3DSURFACE9 pDestSurface_New;
  D3DLOCKED_RECT lrect_New;
  D3DSURFACE_DESC Desc;

  m_QVSM_pShadowMapSurf_Common->GetDesc(&Desc);
  V(m_pd3dDevice->CreateOffscreenPlainSurface(Desc.Width,Desc.Height,Desc.Format,D3DPOOL_SYSTEMMEM,&pDestSurface_New,NULL));//Must be D3DPOOL_SYSTEMMEM for MSDN
  V(m_pd3dDevice->GetRenderTargetData(m_QVSM_pShadowMapSurf_Common,pDestSurface_New));

  hr=pDestSurface_New->LockRect(&lrect_New,NULL,D3DLOCK_NO_DIRTY_UPDATE|D3DLOCK_READONLY);
  //hr=pDestSurface_New->UnlockRect();//<==position1

  for (LONG y=0;y<(LONG)Desc.Height;y++)
  {
    DWORD dwOffset = y*Desc.Width;

    for (LONG x=0;x<(LONG)Desc.Width;x++)
    {
      //float dwColor_New = ((float*)lrect_New.pBits)[y*(lrect_New.Pitch/sizeof(float))+x];//Y*Width+X
      float dwColor_New = ((float*)lrect_New.pBits)[y*Desc.Width+x];//Y*Width+X
      int c=12;
    }
  }

  hr=pDestSurface_New->UnlockRect();//<==position2

  SAFE_RELEASE(pDestSurface_New);