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Re: non-antialiased font configuration


From: Craig
Subject: Re: non-antialiased font configuration
Date: Tue, 1 Nov 2022 18:55:32 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1

that's a perfect rendering, thank you!

additionally, my problem was that libreoffice installed "fonts-liberation2" which is a disaster when you disable antialiasing.  removing "fonts-liberation2" and
sticking with "fonts-liberation" deb packages made all the difference.

I'm on KDE Neon now, so no gtk complications generally speaking.



edfardos


On 11/1/22 16:54, Paul Sheer wrote:
Hi Ed, Werner


Ed, I have added monochrome support to cooledit.
See the 'devel' branch:https://github.com/paulsheer/cooledit/tree/devel

try:
    cooledit -fn LiberationMono-Regular.ttf:16M

See screenshot.

Note that cooledit has a builtin unicode terminal on Shift-F1, so if
it is a terminal you want, then this gets you there.


Werner, I tend to agree that downstream vendors ought to be
responsible for proper configuration options. The problem is that they
don't listen to users and don't support tail use cases. It is probably
prudent to have an override on certain settings. Until then if I were
Ed, I would get the Ubuntu source package and change
FT_Load_Glyph/FT_Render_Glyph in the freetype source to only render
monochrome. Luckily freetype is a DLL, so it takes effect for every
dependent package.

BTW I have never used Kanything.

Kind regards

Paul


On 10/28/22, Ed Fardos<edfardos@gmail.com>  wrote:
Great info thanks again Werner,  keeping this in the realm of
freetype/ftview, what
option might I pass to ftview to get the ftview rendering looking like the
amber terminal
in the attachment?   Again, I'm trying to avoid antialiasing, particularly
in small
console/monospaced consoles.








On 10/28/22 8:32 AM, Werner LEMBERG wrote:
Thanks Werner,  the images were embedded/smime,
Nope, see

    https://lists.gnu.org/archive/html/freetype/2022-10/msg00005.html

but they're attached to this email.
Now they are, thanks.

Fonts are antialiased in ftview, is there a way to have ftview
render fonts without antialiasing?
Assuming a recent `ftview` version, call

```
ftview -m hintslight -e unic 17 LiberationMono-Regular.ttf
```

to see the text string 'hintslight' using your terminal font at
17ppem.  Press 'H' to cycle through hinting modes, eventually
selecting 'v35' (which supports B/W hinting).  Then press 'A' to
activate monochrome rendering.  I get identical rendering to the upper
part of your image.

Please see the attached image and send me on my way if this isn't a
freetype thing.
It's definitely not a FreeType thing.  BTW, the above xrdb output in
your image shows 'hintslight', which the used terminal font definitely
is not.  I suspect that somewhere your main FontConfig configuration
file gets overridden with an exception for 'Liberation Mono Regular'.
An alternative but less likely theory is that the terminal app ignores
FontConfig settings completely, doing the rendering (and
configuration) by itself.

I'm still looking at DPI,  Do non-antialised fonts prefer a DPI, is
it the fractional scaling that causes the pixelation perhaps?
Whatever scaling value you use, the result is rounded to get an
integer 'pixels per em' (ppem) value.  You have to reduce the font
size if the system's DPI value is (automatically?) set to a larger
value.


      Werner



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