fontface

type TChar struct {
	Rect    image.Rectangle
	Center  image.Point
	Offset  image.Point
	Advance image.Point
}

type TFontFace struct {
	// texture    uint32
	// listbase   uint32
	// maxW, maxH int
	Tex     *image.Gray
	CharMap map[rune]*TChar
	Fixed   bool
}