<!-- This file defines a series of phase function instances
	 to be tested for consistency. This is done using the 
	 testcase 'test_chisquare' -->
<scene>
	<!-- Test the isotropic phase function -->
	<phase type="isotropic"/>
	
	<!-- Test the Henyey-Greenstein phase function
		 configured as highly forward-scattering -->
	<phase type="hg">
		<float name="g" value="0.9"/>
	</phase>

	<!-- Test the Henyey-Greenstein phase function
		 configured as slightly backward-scattering -->
	<phase type="hg">
		<float name="g" value="-0.3"/>
	</phase>
	
	<!-- Test the micro-flake phase function -->
	<phase type="microflake">
		<float name="stddev" value="0.1"/>
	</phase>
</scene>
