Thanks asimes. Kaliset formula is used here for texturing the fog, using exponential smoothing calculation method.
For the basic formula version, iterate for every point p:
p=abs(p*scale)/length(p)
2+c
or...
p=abs(p*scale)/dot(p,p)+c
c is a constant (or julia value), use negative ones, and try with different
scale values.
The fractal itself is the Kalibox, a Mandelbox mod you can find in Mandelbulb3D as "AboxmodKali":
This is copied from the formula info in M3D:
x = X_add - abs(x)
y = Y_add - abs(y)
z = Z_add - abs(z)
rr = x*x + y*y + z*z
if rr < sqr(Min_R) then m = Scale/sqr(Min_R) else
if rr < 1 then m = Scale/rr else m = Scale
x = x * m + Cx
y = y * m + Cy
z = z * m + Cz
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