加上性能说明

Author: lindexi

README.md

@@ -53,6 +53,10 @@ This project originated from: https://github.com/AvaloniaUI/Avalonia/issues/1477
 
 **A:** Yes, this library can be used in Linux environments. It is built on Avalonia and SkiaSharp, which are cross-platform frameworks that support Linux.
 
+**Q:** Can I directly use this library to create a high-performance handwriting whiteboard application?
+
+**A:** No, due to the rendering performance limitations of Avalonia, this library cannot currently be used to create high-performance handwriting whiteboard applications. If you need a high-performance handwriting whiteboard application, it is recommended to add a WPF acceleration layer on the Windows platform to use WPF for rendering strokes to improve performance; on the Linux platform, use native X11 rendering to enhance performance. For related discussions, please refer to <https://github.com/AvaloniaUI/Avalonia/discussions/18702>
+
 ### Advanced Usage
 
 #### Switch stroke renderer

README_zh-CN.md

@@ -45,6 +45,10 @@
 
 **A:** 可以。这个库基于 Avalonia 和 SkiaSharp 构建，这些都是支持 Linux 的跨平台框架。
 
+**Q:** 我是否能直接用这个库制作出一个高性能笔迹白板应用？
+
+**A:** 不可以。受限于 Avalonia 的渲染性能，目前这个库还不能用来制作高性能的笔迹白板应用。如果你需要一个高性能的笔迹白板应用，建议在 Windows 平台上添加 WPF 加速层，使用 WPF 绘制笔迹以提升性能；在 Linux 平台上使用 X11 原生绘制以提升性能。相关讨论请参考 <https://github.com/AvaloniaUI/Avalonia/discussions/18702>
+
 ### 进阶用法
 
 #### 切换笔迹渲染器