<?xml version="1.0"?>

<scene>
  <Group>
    <SubdivisionMesh>

      <positions>

        0.0 0.0 +1.0  
        0.0 0.0 -1.0  

        +1.0 0.0 +1.0  
        +1.0 0.0 -1.0  

        -1.0 0.0 +1.0  
        -1.0 0.0 -1.0  

        0.0 +1.0 +1.0  
        0.0 +1.0 -1.0  

        0.0 -1.0 +1.0  
        0.0 -1.0 -1.0  
        
      </positions>

      <position_indices>
        2 3 1 0 
        4 5 1 0
        6 7 1 0 
        8 9 1 0 
      </position_indices>

      <faces>
        4 4 4 4
      </faces>

      <material>
        <code>"OBJ"</code>
        <parameters>
          <float3 name="Kd">1 1 1</float3>
        </parameters>
      </material>

    </SubdivisionMesh>
  </Group>
</scene>
