Instead of the wpe rendered, which uses a nested wayland compositor, and x11, which uses a redirected xcomposito window, we can make the web process render always into a pbuffer using mesa surfaceless platform and export the rendered texture using DMAbuf to be consumed by the UI process. This way the rendering is independent from the platform (wayland/x11), in the UI process we just import the DMABuf into a texture that we pass to GTK for rendering into the web view widget. If any of the required extensions is not available we can fallback to current platform dependent approach.
Pull request: https://github.com/WebKit/WebKit/pull/10726
Committed 262210@main (d2424c0fc67f): <https://commits.webkit.org/262210@main> Reviewed commits have been landed. Closing PR #10726 and removing active labels.
Re-opening for pull request https://github.com/webkit/webkit/pull/12153
Ubuntu 20.04 post-commit bot is failing after this patch: https://build.webkit.org/#/builders/595/builds/8868 ``` /home/buildbot/worker/GTK-Linux-64-bit-Release-Ubuntu-2004-Build/build/Source/WebKit/WebProcess/glib/WebProcessGLib.cpp:128:9: error: ‘m_displayForCompositing’ was not declared in this scope 128 | m_displayForCompositing = WebCore::PlatformDisplayHeadless::create(); ```
Committed 262405@main (84f510837198): <https://commits.webkit.org/262405@main> Reviewed commits have been landed. Closing PR #12153 and removing active labels.
*** Bug 254976 has been marked as a duplicate of this bug. ***