Method loadPixels

src/webgl/p5.RendererGL.js:537–562

* Loads the pixels data for this canvas into the pixels[] attribute. * Note that set() does not work. * Any pixel manipulation must be done directly to the pixels[] array. * * @private

()

   * @private
   */
  loadPixels() {
    //@todo_FES
    if (this._pInst._glAttributes.preserveDrawingBuffer !== true) {
      console.log(
        "loadPixels only works in WebGL when preserveDrawingBuffer " +
          "is true."
      );
      return;
    }

    const pd = this._pixelDensity;
    const gl = this.GL;

    this.pixels = readPixelsWebGL(
      this.pixels,
      gl,
      null,
      0,
      0,
      this.width * pd,
      this.height * pd,
      gl.RGBA,
      gl.UNSIGNED_BYTE,
      this.height * pd
    );
  }

  updatePixels() {
    const fbo = this._getTempFramebuffer();