draw image by using Thai special characters

package main

import (
	"bytes"
	"fmt"
	"github.com/disintegration/imaging"
	"golang.org/x/image/font"
	"golang.org/x/image/font/basicfont"
	"golang.org/x/image/math/fixed"
	"image"
	"image/color"
	"math"
	"reflect"
)

func drawChar(img *image.Gray, row int, c byte) {
	col := color.Gray{255}
	point := fixed.Point26_6{fixed.Int26_6(0), fixed.Int26_6(10 * (row + 1) * 64)}

	d := &font.Drawer{
		Dst:  img,
		Src:  image.NewUniform(col),
		Face: basicfont.Face7x13,
		Dot:  point,
	}
	d.DrawString(string(c))
}

func build(str string, maxSize int) image.Image {
	w := 7
	h := 13 * (len(str))

	img := image.NewGray(image.Rect(0, 0, w, h))
	for i := 0; i < len(str); i++ {
		drawChar(img, i, byte(str[i]))
	}
	s := math.Sqrt(float64(maxSize) / (float64(w) * float64(h)))
	s = 3
	sw := int(s * float64(w))
	sh := int(s * float64(h))
	r := imaging.Resize(img, sw, sh, imaging.Lanczos)
	r = imaging.Rotate270(r)
	return r
}

func Draw(img image.Image) []byte {
	w := img.Bounds().Size().X
	h := img.Bounds().Size().Y
	var Table = []rune{
		'่',
		'ํ',
		'๋',

		// '๎',
		// '็',
		// '๊',
	}
	T2 := []rune{
		'็',
		'ฺ',
		'้',
	}
	buf := new(bytes.Buffer)
	for i := 0; i < 100; i++ {
		buf.WriteRune(T2[0])
	}
	for i := 0; i < h; i++ {
		for j := 0; j < w; j++ {
			g := color.GrayModel.Convert(img.At(j, i))
			y := reflect.ValueOf(g).FieldByName("Y").Uint()
			pos := int(y * uint64(len(Table)-1) / 255)
			buf.WriteRune(Table[pos])
		}
		_ = buf.WriteByte(' ')
	}
	for i := 0; i < 100; i++ {
		buf.WriteRune(T2[2])
	}
	return buf.Bytes()

}

func main() {
	img := build("Deepin", 1000)
	fmt.Print(string(Draw(img)))
}

It seems the bug has been fixed in google-chrome