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

pixels = W:1024 H:1024

x = from -0.4 to 0.4 W
y = from 0.6 to -0.4 H

y = y - 0.5*sqrt(abs(x))
d = sqrt(x*x + y*y)
r = 0.3
e = 0.05
c = 1 - smoothstep(r -  e, r + e, d)

r = c
g = c
b = c
