Release schedule:

rc1 released on: Oct 29, 2022
Final release: Nov 14, 2022

Build changes:

• picom now needs libEGL to build

Notable changes:

• experimental-backends is now the default. Everything should keep working, except the --glx-fshader-win option. The old window shader support has been replaced by --window-shader-fd. This new shader support has a different interface, so you have to adapt your existing shaders. (#875)
• legacy-backends option has been added so you can go back to the old backends, which will eventually be removed.
• picom.desktop is installed to /etc/xdg/autostart/. picom should autostart now. (#791)
• Shadows and blur now match the shape of the window. This includes windows using the XShape extension, and windows with rounded corners. (#882)
  Example:
  
• New option: --transparent-clipping-exclude, for excluding windows that doesn't play well with transparent-clipping, such as screenshot tool windows. (#663 #738)
• New backend: egl. It should behave exactly the same as the glx backend. Give it a try! (#878)

Other changes:

• --help messages have been refactored, leading to clearer code. (#877)
• picom tries to detect and act on GPU resets. But because of the limitation of the X server, this ended up not being very useful.

Deprecation:

• Raw string pattern in conditions are deprecated. It never worked because of libconfig handles escape sequences in string.

New Contributors

• @i-c-u-p made their first contribution in #812
• @softmoth made their first contribution in #813
• @tokyoneon78 made their first contribution in #843
• @stefanradziuk made their first contribution in #738

Full Changelog: v9-rc1...v10-rc1