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[ft-devel] Subpixel Hinting is Broken

From: Infinality
Subject: [ft-devel] Subpixel Hinting is Broken
Date: Fri, 25 Jan 2013 22:36:28 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2

Hi all,

I've spent the last few hours trying to figure out what was wrong with my code (because I naturally assume that something is messed up with *it*. :D ) Well, it turns out that some recent change to Freetype has broken subpixel hinting.

Compile the last release with subpixel hinting and rendering enabled, and run ftview on Courier New (Windows 8 version, but others may work):
ftview -r 96 10.0 /usr/share/fonts/windows8/cour.ttf

Hit 'L' twice and the down arrow twice, and Esc.  Fails = 0.

Then, compile the latest git with subpixel hinting and rendering enabled, and repeat. I get 713 fails. I tried reverting certain more obvious things with the changes since the last release, but wasn't able to narrow down the cause.

Any ideas on what might have caused this?


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