@Test
    public void testChildOverridesParent() {
        material("Common/MatDefs/Light/Lighting.j3md");

        inputParentMpo(mpoFloat("AlphaDiscardThreshold", 3.12f));
        inputMpo(mpoFloat("AlphaDiscardThreshold", 2.79f));

        outUniforms(uniform("AlphaDiscardThreshold", VarType.Float, 2.79f));
        outDefines(def("DISCARD_ALPHA", VarType.Float, 2.79f));
    }
Validates {@link MatParam}s.

@author Kirill Vainer
jme3-core/src/test/java/com/jme3/material/MaterialMatParamTest.java