SMAAShader.js
SMAABlendShader
Antialiasing blend

Preview requires WebGL2. You can still download the demo.
Image processing demo
Softens little stair steps along edges so thin and slanted lines look smoother.
Official sourceExported assets are free to use commercially and modify.
Antialiasing blend

Softens little stair steps along edges so thin and slanted lines look smoother.
Official source