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Re: [ft-devel] rasterization without sorting
From: |
Werner LEMBERG |
Subject: |
Re: [ft-devel] rasterization without sorting |
Date: |
Mon, 19 Jul 2010 17:49:20 +0200 (CEST) |
> I have been working on a new way to optimise anti-aliased
> rasterization in FreeType and other similar libraries.
Great!
> I am not completely certain that this is the best way to do things
> for *glyph* rasterization, because glyphs are special cases, being
> in general relatively small, but it speeds up CartoType by about 7%,
> and I believe will speed up FreeType.
Given that David already tried to optimize the AA rasterization, an
improvement of 7% is really impressive.
> I enclose a patch file based on my current version of ftgrays.c,
> which I think is very slightly different from the official version.
> I also enclose ftgrays.c itself, for clarity. The differences are
> very simple and affect only this one file.
Thanks a lot! Will have a look the next days. What do you think
about embedding your changes into #ifdef's temporarily so that anxious
users could deactivate it if they are not in the mood of beta
testing? :-)
Werner