Bugfix: backfacing line primitives disappeared due to default SoDragger::GLRender() settings, on some systems (at least on an NVidia RIVA TNT2).
Bugfix: backfacing line primitives disappeared due to default SoDragger::GLRender() settings, on some systems (at least on an NVidia RIVA TNT2).

Alexpux/Coin3D,Alexpux/Coin3D,Alexpux/Coin3D,Alexpux/Coin3D