(this is not render;) ) I've found some useful tutorials, but i can't make it "scale friendly". First of all, i have principled volume shader, than grandient textures to have fading effect, and a bit of noise texture to give it more random scatter. But all the setting are just fine for one scale, and after scaling up the end of the cone, i have strange effects.
Maybe someone have better results, with less amount of nodes?
I though about using spot light in the volumetric box, but with no result.
Thank you in advance.