FXAA stands for Fast Approximate Anti-Aliasing, and it's an even more clever hack than MSAA, because it ignores polygons and line edges, and simply analyses the pixels on the screen. Here's to another episode of the Minute Science playlist! If there's anything else you'd like. Fast approximate anti-aliasing (FXAA) is a screen-space anti-aliasing algorithm created by Timothy Lottes at NVIDIA. FXAA = Fast Approximate Anti-Aliasing. It does blur the image but the implementation matters a lot, and if you don't have the performance to run higher levels of MSAA (or something. If you're not all that familiar with PC gaming and all the different graphics settings found in the options menus of most PC games seem a bit confusing, then you.