[vtkusers] XXXSmoothingOff has no effect

[Maik Beckmann]

Hello,

The attached C++ source file draws a triangle, a line and adds axes.  Line 112 
and 113:
{{{
  renWin->PolygonSmoothingOff(); 
  renWin->LineSmoothingOff(); 
}}}
have no effect.  Anybody hints why this is the case?

Thanks,
 -- Maik

PS: 
  VTK: 5.2
  OS: Linux
  GraphicsCard: Nvidia 8600GT
  GraphicsDriver: nvidia
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