[vtkusers] Coincident polygons & z-fighting

[John Platt]

Hi Users,

 

I am still wrestling with the problem of displaying coplanar
quadrilaterals. According to the OpenGL Technical FAQ "an application
can render coplanar primitives by first rendering one primitive, then by
applying an offset and rendering the second primitive".

 

The problem is,
vtkMapper::SetResolveCoincidentTopologyPolygonOffsetParameters() is
static and I cannot see a way of changing the parameters between the
rendering of each actor.

 

I would really appreciate some advice on this topic.

 

Many thanks in advance.

 

John.

 

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