function createCanvasBuffer(width, height) {
  const canvas = document.createElement("canvas");
  canvas.width = width;
  canvas.height = height;
  const ctx = canvas.getContext("2d");
  applyImageSmoothing(ctx, false);
  return (ctx);
}
@param {Number} width
@param {Number} height
@return {CanvasRenderingContext2D}