Text entities: huge font files don't render properly

[JulianGro]

I assume I am hitting undocumented limits.

$ wine msdf-atlas-gen.exe -font nishiki-teki_3.99zhb.ttf -type mtsdf -fontname nishiki-teki_3.99zhb -format png -arfont nishiki-teki_3.99zhb.arfont -allglyphs
Neither atlas size nor glyph size selected, using default...
Loaded geometry of 33161 out of 33161 glyphs.
Glyph size: 32 pixels/em
Atlas dimensions: 5060 x 5060
Artery Font file generated.
$ 

The file I generated is here: https://data.moto9000.moe/nishiki-teki_3.99zhb.arfont
The original font file is here: https://umihotaru.work/
It works fine without using the -allglyphs attribute.

[HifiExperiments]

can you give this another try with the latest commit from #1111? it appears to work for me there (although the font takes a little while to load)

the characters are also seemingly offset by 1 (c renders as b, 1 renders as 0), not sure if that's expected?

[JulianGro]

can you give this another try with the latest commit from #1111?

It indeed works on #1111.

the characters are also seemingly offset by 1 (c renders as b, 1 renders as 0), not sure if that's expected?

That is not expected. I have no idea how the system works, so I don't know what could be causing this. It works fine with the default limited character set that you get without the -allglyphs parameter.

[HifiExperiments]

so the way it works internally is that the artery font reader gives us a list of glyphs, and each one is identified by a "codepoint" which is a uint32. we take the text (a QString) and split it into QChars, which we use to look up Glyphs.

so...it could be an actual problem with the original font, or a problem with the arfont -allglyphs parameter, or a mismatch between QChar and uint32, or some other problem with how we're looking them up...

[JulianGro]

The original font should be fine, since it works fine with a limited chatset and works fine outside of Overte. Everything else: no idea.
It is worth noting though that this font is huge; I uses a lot of the private area as well, which is one of the things that makes it so interesting.

I guess we should try the allglyphs option on some other fonts and see what happens.