Comment # 15 on bug 40211 from pitamila@free.fr

Sorry for the late reply, I was off last week.

after settings LIBGL_DEBUG=verbose
it appears I had in my environment a
LIBGL_DRIVERS_PATH=/opt/mesa/ pointing
on an old build of mesa tree.

Enemy Territory work like a charm.
close this (non-)bug 
I'm sorry for the noise....

Thank you for support

PS: wine work perfectly
PS2: I will continue testing games and try
to make usefull report this time...