#https://www.shadertoy.com/view/4dtSDr

pixels = W:1024 H:1024

x = from -1 to 1 W
y = from -1 to 1 H

zx = fract(2*x)*2.6 - 0.864
zy = fract(2*y)*2.6 - 1.28

fx = 0.85
fy = 0.5

[Loop Start: 4
w = zx*zx + zy*zy
zt = w - 0.8*fx*zx
zy = -5.5*zx*zy + 2.2*fy*zy
zx = zt
Loop end]

r = sqrt(w)*log(w)
g = 0.6 + r
b = 1.1 + r
