Anti-Aliasing SDFs: It's More Complicated Than You Think

This article delves into the intricacies of anti-aliasing signed distance fields (SDFs). While seemingly straightforward, the process involves numerous considerations, including gradients, transition zone width, coordinate spaces, and color space choices. It explains the use of linear interpolation and smoothstep functions for anti-aliasing SDFs, compares different approaches, and provides practical solutions using pixel size, numerical derivatives, and various color spaces.