Rendering: Unable to render some bitmap style fonts

[SweetSub]

Rendering: Unable to render some bitmap style fonts

[moi15moi]

The family name of the font is: fusion pixel 12px monospaced zh_hans
The name in the style name is Fusion Pixel 12px Monospaced zh

This is propably related to the issue #459

[TheOneric]

Yup, this seems like the fontname length issue from #459.
Thanks for checking this @moi15moi (Btw, also thanks for all the other font selection behaviour investigations. While unfortunately nobody had time yet to implement your findings, they are much appreciated!)

@SweetSub In general, if you want fonts to work consistently with GDI(VSFilter) and modern font tooling, you should (among other things) use names <=31 characters (e.g. fontforge even shows a warning about this). Since the font you’re using appears to be open-source, you might want to consider building a version with a shorter name or making upstream aware of the issue with GDI.
For libass specifically, we still want to emulate the truncation anyway for the sake of VSFilter-compatibility. Thus even without changes in the font, it should eventually work. But this might take a while.