[Interest] Antialized MapRoute in 5.8?

[Dennis Lange]

Hi, is it possible to get an antialized MapRoute result in Qt 5.8? As
far as I got it, it relies on MapPolyline that relies on GL_LINES.

I think MapRoute{smooth: true} is what should make it antialised but it
does not work.

To be sure that my Intel HD graphics driver did not eat every
antialising, I set the environment variable to

export QMLSCENE_DEVICE=softwarecontext

but this removes every MapRoute completely.