#https://www.shadertoy.com/view/Mtf3zr

pixels = W:1024 H:1024

x = from -0.5 to 0.5 W
y = from -0.5 to 0.5 H

div = 8
px = x*div
py = y*div

sx = (px + py)*(px - py)*0.5
sy = px*py

sx = sin(PI*sx)
sy = sin(PI*sy)

a = 0.5*(sx * sy) + 0.5
c = sqrt(abs(a))

r = c
g = c
b = c
	


