> The graphics libraries of my operating system handle gamma correctly. (Only if your operating system is Mac OS X 10.6 or higher) Not just OS X. The majority

> The graphics libraries of my operating system handle gamma correctly. (Only if your operating system is Mac OS X 10.6 or higher) Not just OS X. The majority of Linux games from the past 2 decades including all SDL and id tech 1-3 games relied on X server's gamma function. An X.Org Server update broken it about 6 years ago. It was fixed a few weeks ago. https://bugs.freedesktop.org/show_bug.cgi?id=27222 https://bugs.freedesktop.org/show_bug.cgi?id=27222