Nayuta403

### 页面 URL https://flutter.cn/docs/perf/rendering/shader/ ### 页面源地址 https://github.com/cfug/flutter.cn/tree/master/src/docs/perf/rendering/shader.md ### 描述问题  ### 期望如何修复 _No response_ ### 附加信息 _No response_

optimize the separated frame mechanisms

6

* [ ] #18