https://bugs.documentfoundation.org/show_bug.cgi?id=104242
--- Comment #18 from Michael Meeks <[email protected]> ---
> Checked with Andrew West, BableStone and he passed on that he is just using
> the
> values from Windows LOGFONT lfQuality, nothing exotic and nothing cross
> platform.
The 'nothing cross-platform' is rather a problem; we need to move to a high
quality, accelerated rendering API on every platform that provides -identical-
text sizing, shaping and rendering. Ideally with sub-pixel positioning of
course - but doing accelerated cleartype rendering is quite a tough problem,
not least because whether cleartype works or not is based on what is behind the
text, and how close adjacent strokes are: so it can't be pre-rendered, and
glyph stamped ourselves.
ie. IMHO cleartype is a disaster waiting to happen for the goal of a
cross-platform acceleration - at least, until we have a high quality GPU based
glyph rendering - which (no doubt) is coming. This seems to be the conclusion
of Microsoft too - they don't use ClearType in Office 2016. To some degree it
is also orthogonal to the rendering technology - DirectWrite is excellent not
because it (sometimes) puts colors around glyps ;-) but because you can
actually ask it how wide a glyph is and it doesn't systematically lie through
its teeth in ways that are extraordinarily hard to unwind.
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