# SDF Composition, Repetition & Fractals

**Track:** Advanced Shaders & GPU — Advanced Creative Coding — proposed (50)
**Framework / surface:** GLSL
**Level:** Insane
**Prerequisites:** Raymarching SDF Scenes

**In one line:** smin, infinite domain repetition, Mandelbulb/Apollonian.

## Theory, aesthetics & inspiration

Composition in distance fields trades boolean hard edges for the smooth minimum, Inigo Quilez's polynomial blend that fuses primitives into seamless, claylike unions while preserving the metric. Wrapping coordinates through a modulo before evaluation repeats a single object across infinite space at zero memory cost, the trick behind endless lattices and forests. Iterating a folding-and-scaling map turns the same machinery fractal: the Mandelbulb, devised by Daniel White and Paul Nylander as a spherical-coordinate power of the Mandelbrot set, and the Apollonian gasket of nested tangent spheres both render as raymarched estimated-distance fields. The aesthetic is infinite detail—self-similar, ornate, impossibly intricate under a single camera.