glGetFragDataLocation method
Implementation
int glGetFragDataLocation(
  int program,
  ffi.Pointer<ffi.Int8> name,
) {
  return (_glGetFragDataLocation ??= _dylib.lookupFunction<
      _c_glGetFragDataLocation,
      _dart_glGetFragDataLocation>('glGetFragDataLocation'))(
    program,
    name,
  );
}