[Webkit-unassigned] [Bug 177601] Simple and complex paths are not applied consistently

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=177601

--- Comment #29 from Carlos Garcia Campos <cgarcia at igalia.com> ---
(In reply to Myles C. Maxfield from comment #27)
> (In reply to Myles C. Maxfield from comment #25)
> > (In reply to Michael Catanzaro from comment #23)
> > > Maybe it no longer makes sense for GTK/WPE to support the simple path. What
> > > Myles suggested we really need are performance tests to figure out if we
> > > still need the simple path.
> > > 
> > > Now, I have no clue, but I suppose it's probably not possible to add
> > > ligature and kerning support to our simple path? If it is possible, then
> > > that would be the proper fix. In the meantime, it's a real shame. We get
> > > complaints about poor kerning not irregularly.
> > 
> > I don’t know if there is API for it in HarfBuzz but, even if there isn’t,
> > I’d be willing to bet the HarfBuzz community would accept a patch to add
> > such an API.
> > 
> > I would be very interested to hear any performance numbers you gather from
> > disabling the fast text codepath.
> 
> Chrome uses HarfBuzz and I believe they have deleted their fast text
> codepath.

And pango, which is what GTK+ uses for text shaping and rendering, uses harfbuzz unconditionally too.

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