{ antialias: true }：开启了抗锯齿，让边缘光滑，不再有毛刺。
TransformStream creates a readable/writable pair with processing logic in between. The transform() function executes on write, not on read. Processing of the transform happens eagerly as data arrives, regardless of whether any consumer is ready. This causes unnecessary work when consumers are slow, and the backpressure signaling between the two sides has gaps that can cause unbounded buffering under load. The expectation in the spec is that the producer of the data being transformed is paying attention to the writer.ready signal on the writable side of the transform but quite often producers just simply ignore it.
，这一点在服务器推荐中也有详细论述
“现在L3的适用范围（ODD）过窄，无法快速普及。”国家新能源创新中心一位测试工程师表示，当前L3测试适用范围只是集中在市区跟车儒行和高速规定线路行驶，“更多适用范围需要等待法律法规扩充。”，推荐阅读91视频获取更多信息
Марина Аверкина