canvas 里面设置referrerPolicy=origin没有效果啊。防盗链过不去

const bgImage = canvas.createImage() 

await new Promise(resolve => {

bgImage.onload = resolve;

bgImage.referrerPolicy = 'origin';

bgImage.src = this.data.uiIconsPath.photoBgIcon; // 要加载的图片 url

bgImage.onerror = function(e)

{

  console.log("onerror"+JSON.stringify(e));

}

})