VOlumetric Clouds.

Visceral

Hello PC, i have been looking aroung the web for articles on Particles and Particle materials. I stumbeled on something that i belive covered just this.

Its called "Faking Volumetric Effects in UDK by Stephen Jameson"
Problem is that the link on his page dosnt work. Does anyone know what techniques that are used or do you guys know where i can read this article?

ambershee

Use google cached versions of the page or something like wayback machine.

The page was completely empty:
http://webcache.googleusercontent.com/search?q=cache:x_DWJZSmhK0J:stephenjameson.com/tutorials/faking-volumetric-effects/+www.stephenjameson.com/tutorials/faking-volumetric-effects/&cd=1&hl=en&ct=clnk&gl=uk

Ace-Angel

Had to go all the way to 2010 to get it, but here it is:
http://web.archive.org/web/20101109163953/http://stephenjameson.com/tutorials/faking-volumetric-effects/

Basically, create an effect in your particle of choice or sculpt it, bake it to planes, import them planes in UDK, check double faces and have a couple of planes which act like caps to give at empty angles the effect of volume.

nordahl154

One with full HTML and some other tutorials of his
(only the tiling rock and normal tutorials work though)
http://web.archive.org/web/20100528163256/http://stephenjameson.com/tutorials/faking-volumetric-effects/

Visceral

Thanks ace just what i was looking for. Probably should update the wiki with this link.

Ace-Angel

NP mate

Hmm, looking back at the process, it's only good for one hit pieces, with a material that deforms the mesh with a Sine or Cosine in the Vertex slot, I don't know how 'good' it will look if you want it to be more dynamic like a true particle, maybe someone has more info on that.

Especially wondering on how it will react with a Wind function.

Vailias

Funny side note: This is what I wanted programatc perlin noise for.

One day.

Ace-Angel

^
DX12 hopefully?

Visceral

Yeah obviously i can see that the last effect ( the one i was after) dosnt really work with dynamic particles. but its qute the nice effect if you get it to animate properly.

In a article from bungine i read up on some alternatives to this effect, i think a combination of the two would be the best.

Anyhow thanks for the help guys. And what do you think about volumetrics, will they be an option in UE4? I have no clue how they did it in Cryengine since i lack the technical knowlage of how it works. Maybe you guys have some clues?