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[Octave-bug-tracker] [bug #45357] patch does not stack properly
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From: |
Pantxo Diribarne |
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Subject: |
[Octave-bug-tracker] [bug #45357] patch does not stack properly |
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Date: |
Fri, 19 Jun 2015 14:57:37 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 |
Update of bug #45357 (project octave):
Category: Plotting => Plotting with OpenGL
Status: None => Duplicate
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Follow-up Comment #1:
Hi,
Yes, this is a known issue (see bug #44735): see also the plot comparison page
([1], search for "patch" keyword).
Basically, when two patches have the same z coordinate, OpenGl has a way to
disambiguate which one should be drawn on top of the other : glPolygonOffset.
Unfortunately this doesn't work for line primitives that we associate with
polygons (see e.g. [2]).
Can you report in bug #44735 the additional informations you brought: pdf are
rendered correctly in ML.
Closing report as duplicate.
[1] http://tech-chat.de/compare_plot_demos/
[2) https://www.opengl.org/archives/resources/faq/technical/polygonoffset.htm
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