var gridFloorJSON = {
  id: "grid-floor",
  type: "material",
  baseColor:   { r: 1.0, g: 1.0, b: 1.0 },
  specularColor: { r: 0.0, g: 0.0, b: 0.0 },
  specular:    0.2,
  shine:     2.0,
  nodes: [
    {
      type: "texture",
      layers: [
        {
          uri: "../web/images/grid.jpg",
          minFilter: "linearMipMapLinear",
          magFilter: "linear",
          wrapS: "repeat",
          wrapT: "repeat",
          isDepth: false,
          depthMode:"luminance",
          depthCompareMode: "compareRToTexture",
          depthCompareFunc: "lequal",
          flipY: false,
          width: 1,
          height: 1,
          internalFormat:"lequal",
          sourceFormat:"alpha",
          sourceType: "unsignedByte",
          applyTo:"baseColor",
          blendMode: "multiply",
          scale : { x: 300, y: 300, z: 1.0 }
        }
      ],
      nodes: [
        {
          type: "scale",
          x: 6400,
          y: .5,
          z : 4800,
          nodes: [
            {
              type: "cube"
            }
          ]
        }
      ]
    }
  ]
};