Changes since v11.1

Build changes

• picom now depends on libepoxy for OpenGL symbol management.

Bug fixes

• Workaround a NVIDIA problem that causes high CPU usage after suspend/resume (#1172, #1168)
• Fix building on OpenBSD (#1189, #1188)
• Fix occasional freezes (#1040, #1145, #1166)
• Fix corner-radius-rules not applying sometimes (#1177)
• Fix window shader not having an effect when frame opacity is enabled (#1174)
• Fix binding root pixmap in case of depth mismatch (#984)

Changes since v11

Bug fixes

• Fix missing fading on window close for some window managers. (#704)
• Temporary duct tape that should reduce the chance of getting freezes from the xrender backend. (#1166)

Changes since v11-rc1

Build changes

• Due to some caveats discovered related to setting the CAP_SYS_NICE capability, it is now recommended to NOT set this capability for picom.

Deprecations

• Uses of --sw-opti, and --respect-prop-shadow are now hard errors.
• -F has been removed completely. It was deprecated before the picom fork.

Announcements

New collaborators

Welcome @absolutelynothelix who has joined as our newest collaborator! :tada:

Discord server

We have a discord server now! Join to chat with developers and other picom users.

Changelog

Notable features

• picom now uses dithering to prevent banding. Banding is most notable when using a strong background blur. (#952)
• Frame pacing. picom uses present feedback information to schedule new frames when it makes sense to do so. This improves latency, and replaces the glFlush and GL_MaxFramesAllowed=1 hacks we used to do for NVIDIA. (#968 #1156)
• Some missing features have been implemented for the EGL backend (#1004 #1007)

Bug fixes

• Many memory/resource leak fixes thanks to @absolutelynothelix . (#977 #978 #979 #980 #982 #985 #992 #1009 #1022)
• Fix tiling of wallpaper. (#1002)
• Fix some blur artifacts (#1095)
• Fix shadow color for transparent shadows (#1124)
• Don't spam logs when another compositor is running (#1104)
• Fix rounded corners showing as black with the xrender backend (#1003)
• Fix blur with rounded windows (#950)

Build changes

• Dependency pcre has been replaced by pcre2.
• New dependency xcb-util.
• xinerama is no longer used.
• picom now tries to give itself a real-time scheduling priority. Please consider giving picom the CAP_SYS_NICE capability when packaging it.

Deprecations

• The kawase blur method is removed. Note this is just an alias to the dual_kawase method, which is still available. (#1102)

New first time contributors

@i-c-u-p @summaryInfo @EpsilonKu @Monsterovich @softmoth @tokyoneon78

This is a bug fix release:

Fixes

• Window border not being considered when calculating its mask (Thanks @summaryInfo, #950)

This is a bug fix release.

Fixes:

• A GL texture leak, related to #892
• A crash when shadow radius is set to 0 (#927)
• An undefined symbol error (#932)

Changes

None since v10-rc2

(See also v10-rc1 and v10-rc2)

Changes since rc1

• Fixes #916

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 https://github.com/yshui/picom/pull/812
• @softmoth made their first contribution in https://github.com/yshui/picom/pull/813
• @tokyoneon78 made their first contribution in https://github.com/yshui/picom/pull/843
• @stefanradziuk made their first contribution in https://github.com/yshui/picom/pull/738

Full Changelog: https://github.com/yshui/picom/compare/v9-rc1...v10-rc1

Bug fixes:

#770 #778