void set_texture(const Texture2D &);
const Texture2D &get_texture() const;
void add_glyph(unsigned, float, float, float, float, float, float, float, float, float);
void set_texture(const Texture2D &);
const Texture2D &get_texture() const;
void add_glyph(unsigned, float, float, float, float, float, float, float, float, float);