I've been looking to make an eclipse look in C4D, and I'm struggling with the atmospheric light rays (like in this picture : https://imgur.com/a/EMyym8T).
So I've made a disc object and applied to it a diffuse material with a solar flare noise surface in the alpha channel (https://imgur.com/a/uKXQCVq) and nothing more.
The thing is, when I try to render it with Octane, I have a very pixelated result (https://imgur.com/a/VROwioU).
I don't know why I get that. I've tried with all the projection types but it doesn't seem to work, neither with other objects like a plan, a cube or anything.
Maybe Octane just can't handle that kind of noise.
Do you have any suggestion on why it doesn't work, or how I could get the result I look for ?
Thanks in advance for you answers,