[Mesa-dev] [Bug 78914] [llvmpipe] Front/Backfaces do not cover the same pixels when rasterized

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78914

--- Comment #3 from Florian Link <florianlink at gmail.com> ---
So regarding your comment, rasterization of back/front faces with shared edges
seems to rasterize to different (at least on some pixels). So it is not about
the interpolated vertex attributes, but about the screen pixels.

I tested this with LLVM pipe and with softpipe and only LLVM pipe shows the
artifacts (softpipe does not show any red pixels in my example setup).

The example scene was done using MeVisLab (www.mevislab.de) and the Mesa
opengl32.dll with LLVM pipe, I can send you that MeVisLab scene (MeVisLab is
free to install).


Or do you need a C++ example to reproduce this?

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