There is no detailed API documentation.

beginFace is used to render one face of a cube map, beginEye is used to render one image of a stereoscopic display.

Well, that sounds fun. Add an issue on GitHub please.

Ya, but that's not what one would call "working normally" str.charAt should just work, Utf8.whatever should only work on things which are explicitly utf8 (normal Haxe string nowadays are not). I will get to that (or I'll just bug Hugh about it).

str.charAt should work, will look into that. Utf8.whatever is only properly working after you used Utf8.encode I think. Maybe. No idea if the thing is up to date at all, docs still talk about iso strings, whatever that might be.

Wait a minute, that isn't even supposed to work. In hxcpp fancy strings are now utf16 so Utf8.charCodeAt isn't the right thing to use in your sample.

Aha. That's likely because I activated smart_strings in hxcpp (aka unicode support) which isn't much tested yet. Will have a look tonight. That "bug fix" only takes action when writing a file.

No, that in general doesn't work at all. g2 uses g4 if it's available so when you take a look at the g2 implementation you can carefully mix it with g4 but in most situation this will mess things up - in particular if you call g4.begin instead of g2.begin.

That's a bug I think. GitHub issue please.

I updated everything to the latest Android Studio things and that fixed it by itself without me having to define char16_t again. Please test.