[Webkit-unassigned] [Bug 140290] [GTK] Pixelated fonts used for Engadget headline

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Jan 12 13:49:56 PST 2015


https://bugs.webkit.org/show_bug.cgi?id=140290

--- Comment #9 from Martin Robinson <mrobinson at webkit.org> ---
(In reply to comment #8)
> (In reply to comment #7)
> > (In reply to comment #6)
> > 
> > > With "libfont", I actually mean fontconfig.
> > 
> > Can you determine the exact font that is selected that is causing the
> > pixelation? No matter what fontconfig library is available, we should not be
> > selecting fonts that do not scale properly. Using FC_DEBUG, as I described
> > earlier, should show this.
> 
> I'm not familiar with fontconfig. I'm not able to see nothing relevant on
> those big log files.
> 
> So maybe you can check if you can see something relevant. I have uploaded
> the output of running the MiniBrowser on
> http://www.engadget.com/2015/01/04/lenovo-thinkpad-x1-carbon-2015/
> preloading my system fontconfig libraries or without doing that. With both
> FC_DEBUG=1 and FC_DEBUG=2.
> 
> I have uploaded it here: http://people.igalia.com/clopez/wkbug/140290/
> (warning: the debug2 files decompress to ~400-800M)
> 
> I also tried to run fc-match to see if a different font was selected on each
> case, and at first sight looks is the same.
> 
> $ Tools/jhbuild/jhbuild-wrapper --gtk run fc-match "Segoe UI, proxima-nova,
> proxima-nova-1, proxima-nova-2, Proxima Nova, Helvetica, Arial, sans-serif"
> DejaVuSans.ttf: "DejaVu Sans" "Book"
> 
> $ fc-match "Segoe UI, proxima-nova, proxima-nova-1, proxima-nova-2, Proxima
> Nova, Helvetica, Arial, sans-serif"
> DejaVuSans.ttf: "DejaVu Sans" "Book"

It might be best to make a small reproducible test case first. Basically an HTML file with just the headline.

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