// This creates a normalized unit sized quad.
{
  "primitive": "TriangleStrip",
  "vertex_description": "p2f;t2f",
  "num_vertices": 4,
  "vertices": [-0.5, -0.5, 0.0, 1.0,
                0.5, -0.5, 1.0, 1.0,
               -0.5,  0.5, 0.0, 0.0,
                0.5,  0.5, 1.0, 0.0]
}