[Bug 80033] [sna] Occasional artifacts on window borders (theme dependent)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80033

--- Comment #26 from b3nmore at googlemail.com ---
Btw a 9x2px bottom xpm (ie with a width >8px) causes the border to be rendered
correctly.

(In reply to comment #23)
> > And another observation (tested with commit
> > d49f53cc00258e3b1e1a898c02e219b336716002, because it's much easier to
> > reproduce): The stripes appear if the bottom border is >1009px (or 1013 if
> > one includes the corner pixmaps).
> 
> I believe that is just the theme deciding to use a staging pixmap for wide
> outlines. (Incorrectly, I might add since the hardware is more efficient
> doing the operation in place twice than once to a pixmap then copying it.)

Any chance the theme engine screws things up?

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