Hi,
I enabled the autohinter in our rip, and the bitmap output turns out to
be very good. Sorry about the previous post. Thanks for your reply.
Dakai.
David Turner wrote:
Hello,
Sorry to say this, but it seems you don't understand what the code in
ftraster.c does, or how it relates to the rest
of the font engine. Sadly, I won't be able to give you details here,
since it'd be a bit long.
Have you tried running your program with the current FreeType CVS (which
is about to be
released as 2.2.1 in a few days) ?. It contains a much better
auto-hinter for CJK fonts, and this may improve
your rendering.
Hope this helps,
- David Turner
- The FreeType Project (www.freetype.org)
Dakai Liu a écrit :
Sorry If you have seen it on developer's mail list.
Hello all,
I am working on a rip project that uses FreeType 2.1.10 as font
engine. While I render an Asian font at 6 point size at 600x600 dpi,
the box size is 50x50. The font is a type1 font. FreeType produces
un-even horizontal strokes. During debug, I found that a macro in
ftraster.c:371
#define SCALED(x) ( ( (x) << ras.scale_shift ) - (ras.precision_half) )
is trying to fit the points into the centre of a pixel. but some
certain Y value is already at the centre of a pixel. So SCALED moved
the Y value to the edge of the pixel. I guess this may contribute to
the un-evenness of a horizontal stroke. So I modified it to:
#define SCALED(x) ( (x) << ras.scale_shift )
So the whole grid fitting changed, but the output looks much better.
also the serif at the top appeared. By examining the font file, at 6
point size at 600dpi, we should have 1 pixel sized serif.
I am pretty much puzzled and need some enlightment. I enclosed the
font file.
Thanks.
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