PFNGLMULTICASTVIEWPORTPOSITIONWSCALENVXPROCDart typedef
        PFNGLMULTICASTVIEWPORTPOSITIONWSCALENVXPROCDart =
     void Function(int gpu, int index, double xcoeff, double ycoeff)
    
    
    
Implementation
typedef PFNGLMULTICASTVIEWPORTPOSITIONWSCALENVXPROCDart =
    void Function(int gpu, int index, double xcoeff, double ycoeff);