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"
              }
            ]
          }
        ]
      }
    ]
  };