How to disable font anti-aliasing properly?

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How to disable font anti-aliasing properly?

Alexander Moisseev
I am not using ClearType and I need to disable font anti-aliasing on RRD graphs.
I understand that I need to use a font specifically designed for aliasing. Let's say Tahoma.

So I'm using these options:

--font-render-mode mono
--font DEFAULT:0:Tahoma

It disables anti-aliasing and changes the font.
But the font looking is "ugly" like any anti-aliased font:

I am not familiar with font rendering. I guess there is a problem with hinting or something.

It seems possible as there are examples over Internet.
I am trying to achieve font looking like on the bottom picture.

I am using RRDtool 1.7.0 on FreeBSD 11.1

What am I doing wrong?

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