private void InitRenderer(FontFile fontFile, Texture2D fontTexture)
        {
            _fontFile = fontFile;
            _texture = fontTexture;
            _characterMap = new Dictionary<char,FontChar>();

            foreach(var fontCharacter in _fontFile.Chars)
            {
                char c = (char)fontCharacter.ID;
                _characterMap.Add(c, fontCharacter);
            }
        }
 public FontRenderer(FontFile fontFile, Texture2D fontTexture)
 {
     InitRenderer(fontFile, fontTexture);
 }