How to increase resolution of font?

[codex-hex]

İ appreciate your effort, is there any way to increase font resolution or antialising?(sorry for my bad english)

[NiLuJe]

No, it's a bitmap font, that's the whole point ;). You can only scale it up, nearest-pixel style.

If someone cares enough, the basics should be there to do something more complex, either via FreeType directly, or perhaps more easily with stb_truetype, but it risks getting somewhat complex real fast if you want to do better than just saying "start painting at these coordinates and hope for the best".
You can bypass some of the hassle by assuming you'll only ever use monospaced fonts, but, still, it's somewhat more complex than a good old dumb bitmap font where everything fits in the same block size, always ;).

[NiLuJe]

And if you were thinking of the other, slightly more awful solution, namely generating a whole new set of higher resolution bitmap glyphs, well, first: good luck :D.

And second: don't bother, the renderer only deals with black & white pixels, no in-between (i.e., no AA).

[NiLuJe]

It's also somewhat out of (my) original scope: it already looks & behaves much, much, much better than whatever I might have hoped for when I started working on this.

This statement probably makes more sense for someone familiar with eips on Kindles ;).

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I'd go so far as to say that the retro aspect is kind of a selling point :D.