Better Blur

Better Blur is a fork of the Plasma 6 blur effect with additional features and bug fixes.

Features

• X11 and Wayland support
• Force blur
• Rounded corners with anti-aliasing
• Static blur for much lower GPU usage
• Adjust blur brightness, contrast and saturation

Bug fixes

Fixes for blur-related Plasma bugs that haven't been patched yet.

• Blur may sometimes disappear during animations
• Transparent color schemes don't work properly with the Breeze application style

Support for previous Plasma releases

Better Blur will usually support at least one previous Plasma release (second number in version - 6.x). Exceptions may be made if there is a large amount of breaking changes.

Currently supported versions: 6.4

Latest Better Blur versions for previous Plasma releases:

• 6.0.0 - 6.3.5: v1.3.6, fea9f80f27389aa8a62befb5babf40b28fed328d

Installation

Important

If the effect stops working after a system upgrade, you will need to rebuild it or reinstall the package.

Packages

Arch Linux (AUR)*

Choose cleanBuild when reinstalling the package.

https://aur.archlinux.org/packages/kwin-effects-forceblur

yay -S kwin-effects-forceblur

NixOS (flakes)

flake.nix:

{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    kwin-effects-forceblur = {
      url = "github:taj-ny/kwin-effects-forceblur";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
}

{ inputs, pkgs, ... }:

{
  environment.systemPackages = [
    inputs.kwin-effects-forceblur.packages.${pkgs.system}.default # Wayland
    inputs.kwin-effects-forceblur.packages.${pkgs.system}.x11 # X11
  ];
}

* Unofficial package, use at your own risk.

Manual

Note

On Fedora Kinoite and other distributions based on it, the effect must be built in a container.

Dependencies

• CMake
• Extra CMake Modules
• Plasma 6
• Qt 6
• KF6
• KWin development packages

Arch Linux

Wayland:

sudo pacman -S base-devel git extra-cmake-modules qt6-tools kwin

X11:

sudo pacman -S base-devel git extra-cmake-modules qt6-tools kwin-x11

Debian-based (KDE Neon, Kubuntu, Ubuntu)

Wayland:

sudo apt install -y git cmake g++ extra-cmake-modules qt6-tools-dev kwin-dev libkf6configwidgets-dev gettext libkf6crash-dev libkf6globalaccel-dev libkf6kio-dev libkf6service-dev libkf6notifications-dev libkf6kcmutils-dev libkdecorations3-dev libxcb-composite0-dev libxcb-randr0-dev libxcb-shm0-dev

X11:

sudo apt install -y git cmake g++ extra-cmake-modules qt6-tools-dev kwin-x11-dev libkf6configwidgets-dev gettext libkf6crash-dev libkf6globalaccel-dev libkf6kio-dev libkf6service-dev libkf6notifications-dev libkf6kcmutils-dev libkdecorations3-dev libxcb-composite0-dev libxcb-randr0-dev libxcb-shm0-dev

Fedora 41, 42

Wayland:

sudo dnf -y install git cmake extra-cmake-modules gcc-g++ kf6-kwindowsystem-devel plasma-workspace-devel libplasma-devel qt6-qtbase-private-devel qt6-qtbase-devel cmake kwin-devel extra-cmake-modules kwin-devel kf6-knotifications-devel kf6-kio-devel kf6-kcrash-devel kf6-ki18n-devel kf6-kguiaddons-devel libepoxy-devel kf6-kglobalaccel-devel kf6-kcmutils-devel kf6-kconfigwidgets-devel kf6-kdeclarative-devel kdecoration-devel kf6-kglobalaccel kf6-kdeclarative libplasma kf6-kio qt6-qtbase kf6-kguiaddons kf6-ki18n wayland-devel libdrm-devel

X11:

sudo dnf -y install git cmake extra-cmake-modules gcc-g++ kf6-kwindowsystem-devel plasma-workspace-devel libplasma-devel qt6-qtbase-private-devel qt6-qtbase-devel cmake extra-cmake-modules kf6-knotifications-devel kf6-kio-devel kf6-kcrash-devel kf6-ki18n-devel kf6-kguiaddons-devel libepoxy-devel kf6-kglobalaccel-devel kf6-kcmutils-devel kf6-kconfigwidgets-devel kf6-kdeclarative-devel kdecoration-devel kf6-kglobalaccel kf6-kdeclarative libplasma kf6-kio qt6-qtbase kf6-kguiaddons kf6-ki18n wayland-devel libdrm-devel kwin-x11-devel

openSUSE

Wayland:

sudo zypper in -y git cmake-full gcc-c++ kf6-extra-cmake-modules kcoreaddons-devel kguiaddons-devel kconfigwidgets-devel kwindowsystem-devel ki18n-devel kiconthemes-devel kpackage-devel frameworkintegration-devel kcmutils-devel kirigami2-devel "cmake(KF6Config)" "cmake(KF6CoreAddons)" "cmake(KF6FrameworkIntegration)" "cmake(KF6GuiAddons)" "cmake(KF6I18n)" "cmake(KF6KCMUtils)" "cmake(KF6KirigamiPlatform)" "cmake(KF6WindowSystem)" "cmake(Qt6Core)" "cmake(Qt6DBus)" "cmake(Qt6Quick)" "cmake(Qt6Svg)" "cmake(Qt6Widgets)" "cmake(Qt6Xml)" "cmake(Qt6UiTools)" "cmake(KF6Crash)" "cmake(KF6GlobalAccel)" "cmake(KF6KIO)" "cmake(KF6Service)" "cmake(KF6Notifications)" libepoxy-devel kwin6-devel

X11:

sudo zypper in -y git cmake-full gcc-c++ kf6-extra-cmake-modules kcoreaddons-devel kguiaddons-devel kconfigwidgets-devel kwindowsystem-devel ki18n-devel kiconthemes-devel kpackage-devel frameworkintegration-devel kcmutils-devel kirigami2-devel "cmake(KF6Config)" "cmake(KF6CoreAddons)" "cmake(KF6FrameworkIntegration)" "cmake(KF6GuiAddons)" "cmake(KF6I18n)" "cmake(KF6KCMUtils)" "cmake(KF6KirigamiPlatform)" "cmake(KF6WindowSystem)" "cmake(Qt6Core)" "cmake(Qt6DBus)" "cmake(Qt6Quick)" "cmake(Qt6Svg)" "cmake(Qt6Widgets)" "cmake(Qt6Xml)" "cmake(Qt6UiTools)" "cmake(KF6Crash)" "cmake(KF6GlobalAccel)" "cmake(KF6KIO)" "cmake(KF6Service)" "cmake(KF6Notifications)" libepoxy-devel kwin6-x11-devel

Building

git clone https://github.com/taj-ny/kwin-effects-forceblur
cd kwin-effects-forceblur
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/usr
make -j$(nproc)
sudo make install

Building on Fedora Kinoite

# enter container
git clone https://github.com/taj-ny/kwin-effects-forceblur
cd kwin-effects-forceblur
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/usr
make -j$(nproc)
cpack -V -G RPM
exit # exit container
sudo rpm-ostree install kwin-effects-forceblur/build/kwin-better-blur.rpm

Remove the build directory when rebuilding the effect.

Usage

This effect will conflict with the stock blur effect and any other forks of it.

1. Install the plugin.
2. Open the Desktop Effects page in System Settings.
3. Disable any blur effects.
4. Enable the Better Blur effect.

For more detailed descriptions of some options, check out this wiki page.

Window transparency

The window needs to be translucent in order for the blur to be visible. This can be done in multiple ways:

• Use a transparent theme for the program if it supports it
• Use a transparent color scheme, such as Alpha
• Create a window rule that reduces the window opacity

Obtaining window classes

The classes of windows to blur can be specified in the effect settings. You can obtain them in two ways:

• Run qdbus org.kde.KWin /KWin org.kde.KWin.queryWindowInfo and click on the window. You can use either resourceClass or resourceName.
• Right click on the titlebar, go to More Options and Configure Special Window/Application Settings. The class can be found at Window class (application). If there is a space, for example Navigator firefox, you can use either Navigator or firefox.

High cursor latency or stuttering on Wayland

This effect can be very resource-intensive if you have a lot of windows open. On Wayland, high GPU load may result in higher cursor latency or even stuttering. If that bothers you, set the following environment variable: KWIN_DRM_NO_AMS=1. If that's not enough, try enabling or disabling the software cursor by also setting KWIN_FORCE_SW_CURSOR=0 or KWIN_FORCE_SW_CURSOR=1.

Intel GPUs use software cursor by default due to this bug, however it doesn't seem to affect all GPUs.

Credits

• a-parhom/LightlyShaders - CMakeLists.txt files