Re: Autohinter and FT_LOAD_MONOCHROME question...

[David Turner]

Hi Boris,

> Boris Letocha a écrit :
> 
> Hi!
> 
> In freetype.h is writted that FT_LOAD_MONOCHROME is used only for 
> FT_Render_Glyph. But when I look at AutoHinter pages there is something about
> hinting of aliased and monochrome glyphs differently. So are these options 
> used only for rendering or also for autohinting?
> 

There is no definite plan for now. The current auto-hinter takes the 
"load_flag" argument
from FT_Load_Glyph, and currently uses its own bitflag FT_LOAD_HINT_MONOCHROME 
(or
something like that). I could easily merge them..

Note that for now, the difference between monochrome and anti-aliased hinting 
isn't
striking for monochrome bitmaps. The difference is really noticeable for 
anti-aliased
glyphs, because you can have width of 1 and 1/2 pixel without problem there..

Don't expect too much on the monochrome auto-hinting department for now, because
it's not where I put my priority. I wanted a system that would work well in the
general case (and possibly very well with AA glyphs). It's possible to enhance
the quality of monochrome glyphs, but through 1-bit-specific techniques..

- David

> Boris Letocha
> 
> PS: Sorry for "spam" from me but I want implement caching C++ library around 
> FT till tomorow :-) But I think that my questions can interest more
> people whan only me...