https://bugs.freedesktop.org/show_bug.cgi?id=98631
--- Comment #4 from poma <[email protected]> ---
Apropos Xfce 4.12, notice two variants of the Xfwm4:
= Xfwm4 4.12.3 "released" - Xrender driven compositor,
it can be run on virtually any machine
$ xfwm4 --version
...
Build configuration and supported features:
- Render support: Yes
- Embedded compositor: Yes
= Xfwm4 "not released" - GL(X) driven compositor,
https://git.xfce.org/xfce/xfwm4/commit/?id=fee08ea
it can run on NV50 family (Tesla),
https://nouveau.freedesktop.org/wiki/CodeNames/#NV50
on e.g. NV30 is slow, i.e. not very useful,
although it may have to do with the performance of the CPU.
$ xfwm4 --version
...
Build configuration and supported features:
- Embedded compositor: Yes
- Epoxy support: Yes
LightDM GTK+ Greeter (lightdm-gtk-greeter) is not accelerated,
therefore it can be run on virtually any machine.
KF5/KDE5 i.e. KWin also provides two variants of the compositor, GL and XRender
driven.
One important difference is that Xrender driven compositors aren't tear-free.
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