From kwin  Wed Mar 28 03:12:56 2012
From: Rick Stockton <rickstockton () reno-computerhelp ! com>
Date: Wed, 28 Mar 2012 03:12:56 +0000
To: kwin
Subject: xlib plugin is dead (for Qt5)
Message-Id: <4F7281B8.40803 () reno-computerhelp ! com>
X-MARC-Message: https://marc.info/?l=kwin&m=133290471426876

This is an FYI, I don't speak for Qt-Project (I'm not an Approver or 
Maintainer, just a VERY occasional contributor.)

In a merge earlier today, Qt-Project removed the xlib support code form 
Qt5. (I was not the Approver, but I did vote "+1" on the change). For 
X11 environments, xcb will be it's replacement. Wayland is also a 
"primary" platform, but IMO not completely ready for prime-time use as a 
Qt back-end. (QT requires an SHA1 level of Wayland which is somewhat 
old, slightly buggy, slightly less efficient than current Wayland Git, 
which also adds a few new features over the level now required by 
Qt5-Wayland.)

xcb also has some performance enhancements init's current Git version, 
compared to the recent official Releases (1.8.0 and 1.8.1). If you build 
Qt against a Released Version, (e.g. 1.8.1), Qt "configure" will include 
a line in it's Build Summary, saying that "xcb support is limited (old 
version)." This message is with respect to those recent changes, which 
allow for more efficient painting.

Qt-Project is still looking for a maintainer of Widgets- and if someone 
doesn't volunteer, support for "traditional" Widgets obviously becomes 
very questionable.
_______________________________________________
kwin mailing list
kwin@kde.org
https://mail.kde.org/mailman/listinfo/kwin