#https://www.shadertoy.com/view/MdfSWf

pixels = W:1024 H:1024

u = from -0.5 to 0.5 W
v = from -0.5 to 0.5 H

t = 2.56

x = atan2(u,v)
y = 1.0/length2(u, v)
r = sin(x*5 + sin(t)/3) * sin(y*5 + t)
g = sin(x*5 - t + sin(y+t*3))
b = -r + g * sin(y*4+t)

r = clamp(r, 0, 1)
g = clamp(g, 0, 1)
b = clamp(b, 0, 1)

g = pow(g, 0.5)
b = pow(b, 0.1)

k = length2(x, y)

r = 1 - r*k
g = 1 - g*k
b = 1 - b*k

