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Re: Text anti-aliasing on the Mac

From: John Hudson <tiro@tiro.com>
Date: Thu, 04 Oct 2012 16:07:14 -0700
Message-ID: <506E16A2.5090300@tiro.com>
CC: www-style@w3.org
Thanks for the detailed description, Ben. I think there is still likely 
some confusion in the use of the word 'hinting' in this context. In my 
circles -- font developers -- hinting refers specifically to the 
TrueType instruction set.


[I'll ignore PostScript font hinting for now, which is a bit of a 
different beast but also consists of font data.]

Our experience of OSX Quartz rendering is that TrueType instructions in 
the font are ignored by the renderer except when anti-aliasing is turned 
off completely at very small sizes.

 > The constant percentage dilation of outlines of lcd smoothed text is
> essentially auto-hinting, though rather heavy handed.

Insofar as hinting is a process of distorting outline geometry in order 
to achieve particular rendering results, I suppose this could indeed be 
considered a form of 'auto-hinting', but I think the phrase will confuse 
many font developers who are used to thinking of hinting as instructions 
put in the font data and interpreted by the renderer.

Received on Thursday, 4 October 2012 23:07:42 UTC

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