For example Mandelbort Set visualization as WebGL fragment shader.
Here is 1,000,000 zoom-in centerred around 0.2807024158978315-0.011177972555812295i
And rendering of Lyapunov exponent for logisitc equation.
Rendering of Julia Set for c-values from The Beauty of Fractals:
Very primitive Ray Tracer.
After several unsuccessul attempts to implement fourth degree polinomial solver as OpenGLES shader I've implemented Ray Marching tracer, using SDF definition for torus from Inigo Quelez 3D SDFs collection.
Page showing device orientation and motion events.