[GEM-dev] FSAA problem with latest nvidia driver on linux

[cyrille henry]

hello,

with latest (v177 or 180) nvidia proprietary driver under linux, anti-aliasing did not work.

i don't really understand why, but removing the line 144 : 
setenv("__GL_FSAA_MODE", svalue, 1); 
from Base/GemWinCreateXWin.cpp does solve the problem : 
it allow nvidia-setting to control the application aliasing.

it look like a bug in nvidia driver, but it would be nice if Gem could have a workaround.
i propose changing :
setenv("__GL_FSAA_MODE", svalue, 1);
to : 
if (fsaa!=0)  setenv("__GL_FSAA_MODE", svalue, 1);

that should not harm anyone.

any objection?

Cyrille