PFNGLGETNCONVOLUTIONFILTERPROCDart typedef
        PFNGLGETNCONVOLUTIONFILTERPROCDart =
     void Function(int target, int format, int type, int bufSize, Pointer<NativeType>  image)
    
    
    
Implementation
typedef PFNGLGETNCONVOLUTIONFILTERPROCDart =
    void Function(
      int target,
      int format,
      int type,
      int bufSize,
      Pointer<NativeType> image,
    );