Taken from the wiki:

Code:
material mat_alphatest
{
  effect =
  "
    technique alpha_test
    {
      pass p0
      {
        zWriteEnable = true;
        alphaTestEnable = true;
        alphaBlendEnable = false;
      }
    }
  ";
}

action apply_alphatest_material
{
  my.material = mat_alphatest;
}


Convert it to lite-C, should help.

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