code: function (width, height) {
          this._lightAccumTex.width = width;
          this._lightAccumTex.height = height;
  
          // PENDING viewport ?
          this._gBuffer.resize(width, height);
      }
docs: getFullQuadLightPass: function () { return this._fullQuadPass; }, 
  Set renderer size.
  @param {number} width
  @param {number} height