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https://social.msdn.microsoft.com/Forums/vstudio/en-US/13428f80-0f75-45e8-b591-f2df446a7584/disable-dirty-region-support
Jan 30, 2009 · http://windowsclient.net/wpf/perf/wpf-perf-tool.aspx The short answer to your question is that there is no programmatic way to disable dirty regions - we don't expose any API to control them at all. Perforator is a tool we built internally that uses some native hooks to accomplish the behavioral change.
https://social.msdn.microsoft.com/Forums/en-US/016a732a-a322-4d77-9d11-e2f7edc5fde1/how-to-disable-dirty-region-support
when i used MediaElement play a media , i see better performance when I check this option in WPF Performance Suite · Unfortunately, it doesn't appear that we have that option, see this thread: Disable dirty region support What's weird, is that disabling it should actually slow things down. But you're not the only one reporting increased performance ...
https://stackoverflow.com/questions/18836549/wpf-performance-wrong-dirty-rect-calculation
WPF Performance. Wrong dirty rect calculation. Ask Question Asked 6 years, 2 ... WPF Perforator tells me that WPF calculates the dirty region for the entire tab instead of only the blinking cursor ... there are going to be unexpected negative results. WPF does not support developers with a winforms mentality. – Federico Berasategui Sep 16 '13 ...
https://github.com/dotnet/wpf/issues/707
May 18, 2019 · If I tick "Disable dirty region support" or "Show dirty-region update overlay", then it renders just fine. If I tick "Clear back-buffer before rendering" and then hover over a button, then the content of the window turns black, except for the button which renders correctly. Edit: This is the same as in framework 4.8 so i guess it is normal.
https://blog.walterlv.com/post/wpf-rendering-dirty-region.html
现在将 Show dirty-region update overlay 选项打勾即可看到本文一开始的脏区叠加层的显示。 与脏区有关的选项有三个： Show dirty-region update overlay 显示脏区叠加层，每一次脏区出现需要重新渲染时会叠加一层新的半透明颜色。 Disable dirty region support 禁用脏区支持。
https://docs.microsoft.com/en-us/dotnet/framework/wpf/advanced/disable-the-realtimestylus-for-wpf-applications
Disable the RealTimeStylus for WPF Applications. 03/30/2017; ... As a result, to use WM_TOUCH to receive touch messages from a WPF window, you must disable the built-in stylus support in WPF. This is applicable in a scenario such as a WPF window hosting a component that uses WM_TOUCH. ... To disable WPF listening to stylus input, remove any ...
https://www.centigrade.de/blog/en/article/wpf-performance-2/
The screenshot also depicts an extreme configuration, as the operation “Disable dirty region support” is checked (circled in red). As a consequence, the entire screen is completely redrawn every time an action is performed. ... As WPF is infamous for this “problem”, Google spits out quite a dozen of suggestions, which claim to give an ...
http://www.voidcn.com/article/p-eiggvvni-ez.html
Disable dirty region support（禁用已更新区域支持） 使 WPF 每当发生更改便重绘整个窗口。通常，只会重绘已更改的窗口部分。启用此选项将使应用程序的呈现速度大为减慢。 Disable Opacity effects（禁用不透明度效果） 禁用某些可能会造成性能下降的不透明度效果。
https://lionking1109.wordpress.com/2007/12/16/performance-profiling-tools-for-wpf/
Dec 16, 2007 · Show dirty region update overlay . Causes each update WPF makes to the screen to be indicated by re-coloring. This allows you to see when and where areas are redrawn in an application. Disable dirty region support . Causes WPF to redraw the entire window anytime a change is made. Normally, only the portion of the window that has changed is redrawn.
https://blogs.msdn.microsoft.com/jaimer/2009/06/29/wpf-discussions-090626/
Jun 29, 2009 · WPF discussions 090626 ... 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. ... Subject: Is there any support in WPF for “bottom-up” bitmaps?
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