Unicode extended characters aren't rendered

[justledbetter]

I'm not sure what I'm doing wrong here, but I'm unable to get any Unicode extended characters to render to the screen. Here's a simple test program illustrating the problem - you'll need to download Catrinity.otf from https://catrinity-font.de to run it; I'll try to provide a screenshot to illustrate too.

package main

import (
	_ "embed"
	"image"

	"github.com/aarzilli/nucular"
	"github.com/aarzilli/nucular/font"
)

//go:embed Catrinity.otf
var fontData []byte

func main() {
	size := 32
	catrinity, err := font.NewFace(fontData, size)
	if err != nil {
		catrinity = font.DefaultFont(size, 1)
	}

	w := nucular.NewMasterWindowSize(0, "Test", image.Point{800, 480}, func(w *nucular.Window) {
		w.RowScaled(0).Dynamic(1)
		bounds, out := w.Custom(0)
		if out == nil {
			return
		}
		lineWidth := w.LayoutAvailableWidth() / nucular.FontWidth(catrinity, "A")

		var str []rune

		// Standard alphanumeric range (displays fine)
		for i := 0x41; i < 0x90; i++ {
			str = append(str, rune(i))
			if i%lineWidth == 0 {
				str = append(str, '\n')
			}

		}

		// Bold alphanumeric range (doesn't display)
		for i := 0x1b410; i < 0x1b490; i++ {
			str = append(str, rune(i))
			if i%lineWidth == 0 {
				str = append(str, '\n')
			}
		}

		// Emoji range (doesn't display)
		for i := 0x1f600; i < 0x1f644; i++ {
			str = append(str, rune(i))
			if i%lineWidth == 0 {
				str = append(str, '\n')
			}
		}

		out.DrawText(bounds,
			string(str),
			catrinity,
			w.Master().Style().Text.Color,
		)
	})
	w.Main()
}

[justledbetter]