[Mesa-dev] [Bug 94193] [llvmpipe] Line antialiasing looks different when GL_LINE_STIPPLE is enabled with pattern 0xffff

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94193

--- Comment #2 from Roland Scheidegger <sroland at vmware.com> ---
So if I understand this right, there's really two issues here:
1) smooth lines don't quite work when line stippling is enabled
2) we don't optimize fake-enabled line stippling away

As for 2), this is something the state tracker could do. I don't know if that's
worth it? I think we generally only optimize for stupid gl state settings like
this if there's actually apps out there which really do these stupid things.
So, are there such real apps?

As for 1), I can't quite see why it wouldn't look the same. The draw stipple
stage should create a single new line in the end which should be identical to
the original one, and this should then still enter the aaline stage as it would
without line stippling. Clearly looks like a bug to me...

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