Signed Distance Fields.
"A simple and efficient method is presented which allows improved rendering of glyphs composed of curved and linear elements."
I like that the paper thinks flashing red outline on text is scary. Also this paper features one of the few official pre release TF2 screenshots to exist (beta 2fort and hud). https://libgdx.com/wiki/graphics/2d/fonts/distance-field-fonts https://steamcdn-a.akamaihd.net/apps/valve/2007/SIGGRAPH2007_AlphaTestedMagnification.pdf #tf2