Cloud Volume Rendering Using Raymarching in Unity

I was really impressed with Ryan Brucks' Unreal Engine raymarching demos that he published on the Epic forums. Since I'm a Unity user, I wanted to see if the same techniques could be used in Unity, and it totally worked out!

This was just an early test to learn more about Raymarching - I plan to do some more experiments with fluids and pyro in the future.

[swanijam]

I got very excited for the tutorial and then the video ended. I've been had

[Psilocervine]

That's pretty nifty. If it can get performant enough and work well with Unity's upcoming HD rendering pipeline I could see such a technique really pushing the visual fidelity of some of the higher end Unity projects!

[ineshilz]

Dear john mac, this looks absolutely amazing and i have never found anything like it anywhere else. I want to know so bad how to do it, please do a tutorial! PLEASE?! We will love you forever for this!! <3

[scoobynicker]

Hey John, Just found you while looking for tutorials on 3rd person movement. Bummed that you haven't uploaded in 2 years. It seems that you have a LOT of helpful stuff that I can't wait to watch.

[shinobudev]

Problem is this is not light on the performance so for things like VR you'd have to throw it out the window. Adding a screen space pass and having a for loop is bad juju for the frag shader.

[brian-nrmo]

Oh lol is that iq at the end there? Awesome to get the god of SDF to appear in your raymarch video! I used to work right across the walkway (next to the glass cube). I left the company in 2017.

[raminote]

It looks a lot like Gas clouds in Star Citizen, probably the same technique but the similarities are impressive :D

[PhilipJaehnert]

Hey John incredible work! Is there any way I can buy this from you, perhaps on the AssetStore?

[badjano]

Any news? Are you planning to do some tutorial or maybe sell the asset?

[impheris]

hi, looks great, do you have any tutorial or some links to know how to replicate that? thanks

[fartist]

it's been .. years but still interessted i how do you do this in unity !! can we dm on it ? :D

[samsaraAI]

Really nice video. Do you have any paper where I can follow to program myself this clouds? :)

[rendermanpro]

Would be nice if you can make tutorial / share asset.

[KimChi_Koongya]

01:00 Cloud beautiful... sample project, please.

[khiemgluong]

This is very nice, but probably only useful for post-processed image or video renders, not as a runtime mechanic in a video game.

[-saca-]

Very interesting! Although I always wonder, if this can be done in real-time for volumetrics then why aren't games using it more? I don't think I've ever seen a game with real-time ray marched volumetrics in it it before

[neenaw]

Hold the fucking phone. That's beautiful.

[JellyCreature]

Far stretch here. But how dose it stand with interactions? Like a game object flying through it or landing on it.

[devincory]

I bet you could do some really impressive terrain with raymarching.

[hereticstanlyhalo]

But how does ray marching work in a 3d environment like your cloud?