[Webkit-unassigned] [Bug 161493] [FreeType] Incorrect application of glyph positioning in the Y direction

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=161493

--- Comment #17 from Myles C. Maxfield <mmaxfield at apple.com> ---
(In reply to comment #11)
> GlyphBuffer is only used for painting. As such, we can save space if,
> instead of storing separate advances / origins in it, we collapse these into
> "painting advances" which are the offset from each glyph's paint position to
> the next.
> 
> I considered renaming GlyphBuffer to something like PaintingGlyphBuffer but
> ultimately decided it wasn't worth the effort.
> 
> Ultimately, we should remove the m_offsets member from GlyphBuffer in the
> Windows port. I plan on doing this at some point in the future. Rather than
> increasing the usage of this variable, I would suggest computing each
> glyph's paint position inside HarfBuzzShaper (thereby taking into account
> the offsets) and storing that in GlyphBuffer.

I'm doing this at https://bugs.webkit.org/show_bug.cgi?id=161814

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