Method addFunction

src/gpu.js:507–510

* @desc Adds additional functions, that the kernel may call. * @param {Function|String} source - Javascript function to convert * @param {IFunctionSettings} [settings] * @returns {GPU} returns itself

(source, settings)

   * @returns {GPU} returns itself
   */
  addFunction(source, settings) {
    this.functions.push({ source, settings });
    return this;
  }

  /**
   * @desc Adds additional native functions, that the kernel may call.