Re: [Inquiry] Auto-fit on monochrome output

[Jm Moon]

> Define 'improve hinting'.  It's not clear to me what you actually want to
achieve.
Currently we are using FT_LOAD_RENDER | FT_LOAD_TARGET_MONO |
FT_LOAD_MONOCHROME and still seeing very bad appearance
So not sure if I missed anything there in order for the
monochrome character to look nicer?

Thank You.

Best Regards
JM Moon


On Wed, 8 Nov 2023 at 13:35, Werner LEMBERG <wl@gnu.org> wrote:

> >> No, (good) auto-hinting is not available for monochrome display.
> >
> > Does this mean even if I load the glyph with FT_LOAD_FORCE_AUTOHINT,
> > the autofit algorithm also will not perform any hinting?
>
> It will perform hinting but expect very ugly results.
>
> > I'm using the TrueType font, any way to improve the hinting other
> > than FT_LOAD_TARGET_MONO?
>
> Define 'improve hinting'.  It's not clear to me what you actually want
> to achieve.
>
> >> A segmentation fault shouldn't happen; I guess you are forgetting
> >> to check a return value somewhere.  If the problem persists please
> >> provide a small stand-alone code snippet for testing purposes that
> >> I can compile and run on the command line.
> >
> > bad case : Segmentation fault "potentially unexpected fatal signal 11"
> >  -->tried with combination of
> > FT_LOAD_RENDER | FT_LOAD_FORCE_AUTOHINT
> > FT_LOAD_RENDER | FT_LOAD_TARGET_MONO | FT_LOAD_FORCE_AUTOHINT
> > FT_LOAD_RENDER | FT_LOAD_MONOCHROME | FT_LOAD_FORCE_AUTOHINT
>
> Thanks, but these images don't help in any way to identify a possible
> bug in FreeType.  As I said, I need a small, compilable, stand-alone
> snippet (written in C) that runs on the command line and exhibits the
> problem.  This means some work on your side to reduce your code as
> much as possible – you are done if removing anything from the example
> no longer triggers the problem.
>
>
>    Werner
>