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Re: [ft-devel] Experimental: v38 interpreter with minimal backwards comp

From: Nikolaus Waxweiler
Subject: Re: [ft-devel] Experimental: v38 interpreter with minimal backwards compatibility mode and linear advance widths
Date: Thu, 10 Mar 2016 16:48:56 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

The next iteration.

- Execution of glyph instructions is stopped after IUP[x] and IUP[y] are called. This saves some backwards compatibility hack work. - SHPIX now denies execution under the same circumstances as DELTAP. Before, this blew up Rokkitt, but the freshly released v1.2 in Google's font directory works fine. Hurrah! - Code that reset x-coordinates after hinting was removed, I found it made no discernible difference. Saves some memory writes.
- Extended documentation somewhat.

Known problems: Several glyphs of the DejaVu family get no hinting at any size, as if it was disabled for the affected glyphs. Must investigate.

Attachment: 0001-Implement-v38-bytecode-interpreter-and-make-it-the-d.patch
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Attachment: 0002-Implement-v38-bytecode-interpreter-and-make-it-the-d.patch
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