[Development] Enabling xcb-native-painting feature in CI

[Thiago Macieira]

On Monday, 27 October 2025 06:39:40 Pacific Daylight Time Shawn Rutledge via 
Development wrote:
> > Indeed, at this point it’s fair to say that Qt is not for projects that
> > heavily depend on X11 remoting over low bandwidth.
> For what it's worth, I still occasionally use X11 remotely.

Remote X11 still has its uses. I use it too, over LAN connections (~0.5 ms 
ping and > 500 Mbit/s bandwidth), and I also VNC to a macOS and RDP to a 
Windows one. The problem the native painting was meant to solve was that of 
*low* bandwidth or high latency X11 (or both). X11 was never good[*] for this 
and has become massively worse in the last 2 decades, with client-side fonts, 
client-side painting, etc. In fact, the VNC and RDP experience are often 
better than remote X11.

[*] it might have been "good enough".

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Principal Engineer - Intel Data Center Group
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