<scene version="0.5.0">
	<integrator type="ptracer"/>

	<shape type="disk">
		<transform name="toWorld">
			<translate z="-1"/>
		</transform>
		<bsdf type="diffuse"/>

		<sensor type="irradiancemeter">
			<sampler type="independent">
				<integer name="sampleCount" value="128000"/>
			</sampler>

			<film type="mfilm"/>
		</sensor>
	</shape>

	<shape type="disk">
		<boolean name="flipNormals" value="true"/>
		<bsdf type="diffuse"/>

		<transform name="toWorld">
			<translate z="1"/>
		</transform>

		<emitter type="area">
			<spectrum name="radiance" value="1"/>
		</emitter>
	</shape>
</scene>
