[cairo] Rotated glyph inked area problem

mpsuzuki at hiroshima-u.ac.jp mpsuzuki at hiroshima-u.ac.jp
Fri Sep 10 09:19:54 PDT 2010

On Fri, 10 Sep 2010 09:13:55 -0300
Ian Britten <britten at caris.com> wrote:
>> In fact, my long term plan is for cairo to get the glyph
>> outline from FreeType and do everything (rasterization, extent calculations,
>> etc) all within cairo itself since FreeType has proved to be very
>> low-precision at those.
>Agreed.  We've encountered similar problems before (Overflow, if I
>recall...).  The details are fuzzy at the moment, but I believe we
>load fonts at a specific/fixed size, then do all the subsequent
>scaling ourselves...

>>> So, should I pursue either of these issues (Bugzilla?), or are
>>> they known issues?
>> Known issues.  Here's what I wrote previously:
>>    http://lists.freedesktop.org/archives/cairo/2008-May/014146.html

Sorry for asking a stupid question. This issue is caused
by the bug(s) in FreeType's scaler, rasterizer etc? Or,
caused by API limitation? Behdad's comment in 2 years ago
told that 26.6 fixed type is insufficient precision for
the purpose.


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