Dramatically CPU usage on high resolutions (Blur operation)

[undiabler]

Platform: Archlinux 5.9.10, i3wm

GPU, drivers, and screen setup: Nvidia Titan RTX, nvidia-drivers 455.45.01-2, one monitor 2560x1440 resolution

Compton version: git-v0.1_beta2-95-g241bbc5-2018-02-22 from aur

Compton configuration: default configuration with glx backend

Steps of reproduction

• open terminal with blured background
• open application like htop
• move arrows up and down to update window state
• watch your CPU dying =)

Expected behavior

CPU usage should not take half of system resources.

Current Behavior & Other details

CPU usage takes half of system resources on blur operation.

[tryone144]

The implementation you are using contains known bugs and is based on the now-unmaintained compton. Please try the improved implementation in the active fork picom. You can install the latest development version on Archlinux with the picom-git package.

You might have to update your configuration though as some options have been deprecated and removed. You can use the dual-kawase blur-algorithm with --experimental-backends --backend glx --blur-method dual_kawase --blur-strength 7.

[undiabler]

Thanks a lot. Will this implementation be maintained in future? For now I have only one suggestion to add some deprecation block with link to picom in readme. Its really hard for now to figure out where is actual maintained project. Picom works good for me.