Comment 3 for bug 173668

me@my-laptop:~$ glxinfo | grep -i direct
direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
OpenGL renderer string: Mesa GLX Indirect

As has been pointed out before, the launcher script for Warsow (in /usr/games) checks glxinfo to test "direct rendering" capabilities. Because the game downloaded straight from the site launched regardless of glxinfo's output, I see this as an error in the Warsow package (or perhaps in glxinfo itself?).