https://bugs.kde.org/show_bug.cgi?id=431068
Bug ID: 431068 Summary: FR: Disabling the blur effect for non-visible parts of the windows Product: kwin Version: unspecified Platform: unspecified OS: Linux Status: REPORTED Severity: major Priority: NOR Component: compositing Assignee: kwin-bugs-n...@kde.org Reporter: sepa...@gmail.com Target Milestone: --- Flags: Usability+, Decision-Required+ I'm a fan of nice desktop effects like blur.But the performance of the KWin's blur plugin is terrible.It's slow on low-end systems and consumes a lot of power on high-end systems with high-res displays. I know there have been a lot of optimizations and many bug fixes over the past few years but the compositor still lacks an important feature: If someone stacks e.g 10 transparent windows on top of each other,then KWin has to update the background blur of all of them once a small change appears on the screen(Even if they're not visible,e.g a completely opaque window covers some translucent windows). If it eliminates the transparency of non-focused windows,then the effect would be sometimes useless(Windows10 does this,but the use of the blur effect in Win10 is much less widespread compared to the widget themes we use in KDE like Kvantum or QtCurve or even Aurora themes). I'm thinking of a way to disable the blur effect for parts of the non-focused windows which are covered,and just leave them simply transparent.This of course doesn't need any change to the widget toolkits like Qt,but makes kwin less resource-hungry. What's your opinion as the KWin developers and what do you think about the possible performance gain? -- You are receiving this mail because: You are watching all bug changes.