[vtkusers] diapearing polydata

[jalal sadeghi]

Hi All vtk professional developer.

when i add a large polydata to a  render with more than 1.5mg polygon the
polydata disappear without any wanning message.I checked
  vtkOpenGLDisplayListPainter and wondering  I saw that there isnot any
check for Success or failure .
when and why the polydata disapears?
thanks.
jalal
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