[Octave-bug-tracker] [bug #44735] OpenGL patch outline has incorrect Z depth with respect to other patch fill colors

[Rik]

Update of bug #44735 (project octave):

                Priority:              5 - Normal => 3 - Low                
                 Summary: OpenGL based figure has incorrect element / object
depth => OpenGL patch outline has incorrect Z depth with respect to other
patch fill colors

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Follow-up Comment #3:

I'm lowering the priority of this bug since we are at least as good as the
competition.  Maybe we could do better, although from my experience with
OpenGL and the code in gl-render.cc it will not be easy.

A good test for any eventually proposed code is


demo ("isosurface")


Right now we use just enough gl_POLYGON_OFFSET so that the black borders of
each patch object are distinct.  I've experimented with smaller values in the
past and the boarders disappear behind the fill color of the patch object
itself.



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