HarmonyOS 鸿蒙Next canvas绘制时开启了抗锯齿 无效

一样我也遇到这个问题 画布面积大没事，设置小点，图形不仅有锯齿，还虚的不行呀。咋整。

private settings: RenderingContextSettings = new RenderingContextSettings(true)
private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings)

// 绘制打勾
private drawSuccess() {
  if (this.context.width === 0 || this.context.height === 0) {
    return
  }
  this.context.clearRect(0, 0, this.context.width, this.context.height);

  let centerX = this.context.width / 2;
  let centerY = this.context.height / 2;

  this.context.beginPath();
  //
  let radius = Math.min(centerX, centerY) - 5
  this.context.arc(centerX, centerY, radius, this.DEGREES_TO_RADIANS(-90),
    this.DEGREES_TO_RADIANS(360), false)
  this.context.strokeStyle = this.drawColor.toString();
  this.context.lineCap = 'round';
  this.context.lineWidth = 2
  this.context.stroke()
}