PFNGLTEXCOORD2FCOLOR3FVERTEX3FSUNPROCDart typedef
        PFNGLTEXCOORD2FCOLOR3FVERTEX3FSUNPROCDart =
     void Function(double s, double t, double r, double g, double b, double x, double y, double z)
    
    
    
Implementation
typedef PFNGLTEXCOORD2FCOLOR3FVERTEX3FSUNPROCDart =
    void Function(
      double s,
      double t,
      double r,
      double g,
      double b,
      double x,
      double y,
      double z,
    );