Class CPUKernel

src/backend/cpu/kernel.js:11–658

* @desc Kernel Implementation for CPU. * Instantiates properties to the CPU Kernel.

 * <p>Instantiates properties to the CPU Kernel.</p>
 */
class CPUKernel extends Kernel {
  static getFeatures() {
    return this.features;
  }
  static get features() {
    return Object.freeze({
      kernelMap: true,
      isIntegerDivisionAccurate: true
    });
  }
  static get isSupported() {
    return true;
  }
  static isContextMatch(context) {
    return false;
  }
  /**
   * @desc The current mode in which gpu.js is executing.
   */
  static get mode() {
    return 'cpu';
  }

  static nativeFunctionArguments() {
    return null;
  }

  static nativeFunctionReturnType() {
    throw new Error(`Looking up native function return type not supported on ${this.name}`);
  }

  static combineKernels(combinedKernel) {
    return combinedKernel;
  }

  static getSignature(kernel, argumentTypes) {
    return 'cpu' + (argumentTypes.length > 0 ? ':' + argumentTypes.join(',') : '');
  }

  constructor(source, settings) {
    super(source, settings);
    this.mergeSettings(source.settings || settings);

    this._imageData = null;
    this._colorData = null;
    this._kernelString = null;
    this._prependedString = [];
    this.thread = {
      x: 0,
      y: 0,
      z: 0
    };
    this.translatedSources = null;
  }

  initCanvas() {
    if (typeof document !== 'undefined') {
      return document.createElement('canvas');