Closure uses Cg, and also generally doesn't play nicely with OpenGL scaling, resulting in a black screen. Disabling OpenGL scaling lets the game work properly, so add a quirk to do this by default.
Tested against the Humble Indie Bundle 7 build (Closure-Linux-1.1-2012-12-28.sh), and it seems to work fine.
Closure uses Cg, and also generally doesn't play nicely with OpenGL scaling, resulting in a black screen. Disabling OpenGL scaling lets the game work properly, so add a quirk to do this by default.
Tested against the Humble Indie Bundle 7 build (Closure-Linux-1.1-2012-12-28.sh), and it seems to work fine.