SweetFX Shader Suite (or just SweetFX) is a collection of post-processing shader effects for your games. You may have tried another shader injection mod before (InjectFXAA, InjectSMAA, FXAATool ...). SweetFX improves upon all of these.
Add SMAA anti-aliasing, sharpening, tweak the color, gamma, exposure and more. The purpose of this shader collection is for you to adjust the appearance, look and mood of your favorite games to your own liking. Using SMAA antialiasing over MSAA or similar techniques may even make the game run faster.
The most recent version, SweetFX 2.0, has many more features thanks to crosire's ReShade injector.