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