<?xml version="1.0"?>

<scene>
  <Group>
    <SubdivisionMesh>

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

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

      <faces>
        4 4 4 4
      </faces>

      <edge_creases>
        3 4 4 5
      </edge_creases>

      <edge_crease_weights>
        1 10
      </edge_crease_weights>

      <vertex_creases>
        0 2 6 8
      </vertex_creases>

      <vertex_crease_weights>
        0 +inf 0 +inf
      </vertex_crease_weights>

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