PFNGLBLENDFUNCSEPARATEPROCDart typedef
        PFNGLBLENDFUNCSEPARATEPROCDart =
     void Function(int sfactorRgb, int dfactorRgb, int sfactorAlpha, int dfactorAlpha)
    
    
    
Implementation
typedef PFNGLBLENDFUNCSEPARATEPROCDart =
    void Function(
      int sfactorRgb,
      int dfactorRgb,
      int sfactorAlpha,
      int dfactorAlpha,
    );