.net – 通过远程桌面提高WPF应用程序速度？

对于渐变,它不像多个渲染层那么多,例如,如果你有一堆嵌套控件都是部分不透明的.查看 WPF Performance Optimization指南.那里有很多信息需要消化,但是有了渲染的提示和 performance tools,你一定能够做出一些改进.

更新：
Jamie Rodriguez将在微软发布一些关于WPF的内部讨论.今天有一个新帖子,其中包括performance when remoting的提示和讨论.

All versions of WPF since WPF 3.5 SP1 have remoted (both with Remote Desktop and Terminal Server) using Bitmap Remoting.

Bitmap remoting works as follows:

• The application is rendered on the server using WPF’s software rasterizer
• As the application runs,the server keeps track of which regions of the application’s window are newly dirty and need to be updated
• When a region needs to be updated,the server creates a compressed bitmap of just the dirty region and sends that to the client
• Once the client has drawn that bitmap to the appropriate place on its own window,the client window is up-to-date

Given how this remoting mechanism works,performance can be maximized in several ways:

• Dirty regions should be kept as small as possible so the least amount of data is sent over the wire
• Ambient animations should be turned off
  • For instance,setting a window background to an animating gradient would cause the entire window to be invalidated / redrawn every frame
• The system does not optimize away occluded parts of the application
  • For instance,an animation that is completely hidden behind some other opaque element will still cause dirty region invalidation / bitmap generation to occur. Remove these from your application.
• Dirty regions should be created as infrequently as possible
  • Turn off as many animations as possible
  • For those animations that can’t be eliminated completely,lower the animation framerate using the DesiredFramerate property
• Dirty Region Bitmaps should be as simple as possible to maximize their compression
  • Application running over TS should favor solid colors over gradients or other exotic fills (unnecessary images,etc),especially for application pieces that will be redrawn frequently
• Avoid operations that are especially slow when rendered in software
  • BitmapEffects / Effects / ShaderEffects,especially blurs and drop shadows with large radii,are quite slow in software
  • 3D – the 3D software rasterizer is substantially slower than rendering in hardware