anchor.diff:  const String uBoneMatrices = "uBoneMatrices";
   const String uBumpScale = "uBumpScale";
   const String uNormalScale = "uNormalScale";
  +const String uCutOff = "uCutOff";
  +const String uShininess = "uShininess";
  +const String uOpacity = "uOpacity";
  +const String uShadowBias = "uShadowBias";
   
   const String uMaterial = "uMaterial";
   
  
positive.code: const String uColor = "uColor";
  const String uColorAlpha2 = "uColorAlpha2";
  const String uColorAlpha = "uColorAlpha";
  const String uCameraNear = "uCameraNear";
  const String uCameraFar = "uCameraFar";
  const String uCanvasSize = "uCanvasSize";
  
negative.code: const String uLightCount = "uLightCount";
  const String uLightTypes = "uLightTypes";
  
  final Map<String, ShaderVarDesc> _VarsDb = {
    eArray: new ShaderVarDesc("index", ""),
  
    //
  