@Test
    public void testFloatMpZero() {
        material("Common/MatDefs/Light/Lighting.j3md");
        inputMp(mpoFloat("AlphaDiscardThreshold", 0.0f));
        outDefines(def("DISCARD_ALPHA", VarType.Float, 0.0f));
        outUniforms(uniform("AlphaDiscardThreshold", VarType.Float, 0.0f));
    }
Validates {@link MatParam}s.

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