#https://www.shadertoy.com/view/4s33R2

pixels = W:1024 H:1024

x = from -512 to 511 W
y = from -512 to 511 H

z = 2.1
k = 0.5

[loop start: 10
w = exp2(loop-fract(z))
u = floor(x/w)+loop+floor(z)
v = floor(y/w)+loop+floor(z)
a = fract(abs(sin((u*4.3357-v*5.8464)*52.47))*256.75+0.325)
k = mix(a, k, pow((loop-fract(z))/(7.0),2.0))
loop end]

r = k
g = k
b = k
