private void reset() {
        evaluated = false;
        usedShader = null;
        Arrays.fill(usedTextures, null);
        for (MatParamOverride override : new ArrayList<>(renderManager.getForcedMatParams())) {
            renderManager.removeForcedMatParam(override);
        }
    }
Validates {@link MatParam}s.

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