Hi, I have noticed that several of the non-Latin fonts we ship in Fedora contain partial hinting information, usually not covering (or covering only very poorly) the intended target alphabet(s) of the fonts. In particular, several of our CJK fonts include hinting information only for Latin characters, or otherwise covering few to no CJK ideographs. This is a problem because the version of Freetype in Fedora 15 will see that there is some hinting bytecode and try to use the bytecode interpreter rather than the autohinter on the entire font. If the relevant characters are then not actually hinted, those characters will be entirely unhinted, looking blurry. According to Freetype upstream, you should remove all hinting bytecode from the fonts if it's not complete. If Freetype sees that there's no hinting bytecode, it will now automatically fallback to the autohinter. (I got that fixed, see https://bugzilla.redhat.com/show_bug.cgi?id=547532 .) But the patch doesn't help for partially hinted fonts, and Freetype upstream told me they don't want to support these anyway (see https://savannah.nongnu.org/patch/index.php?7471#comment9 â they say that "auto-hinting single glyphs won't give satisfying results since the glyphs won't blend with other, natively hinted ones"). See https://bugzilla.redhat.com/show_bug.cgi?id=682667 for how this affects the Indic Lohit fonts, which are now being fixed by removing the offending hinting bytecode. Please go through your fonts, especially non-Latin fonts, looking for hinting bytecode, and if it isn't anywhere near complete, please remove it from the font. (If your font is a CJK font, the hinting bytecode is very unlikely to be anywhere near complete.) This will make your font look much better in Fedora 15 and higher (and Fedora 13/14 with freetype-freeworld, which was always built with the bytecode interpreter enabled and now also includes the auto-autohint magic, as of freetype-freeworld-2.4.2-5.fc14 and freetype-freeworld-2.3.11-6.fc13). Thank you for your cooperation, Kevin Kofler _______________________________________________ fonts mailing list fonts@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/fonts http://fonts.fedoraproject.org/
