code: function (path) {
          if (path && path.match(/^data:(.*?)base64,/)) {
              return path;
          }
  
          var rootPath = this.textureRootPath;
          if (rootPath == null) {
              rootPath = this.rootPath;
          }
          return util$1.relative2absolute(path, rootPath);
      }
docs: Texture file path resolver. User can override it
  @param {string} path