UDK Rain Shader

TheMetaMorphe · Apr 2012

Hi,

I'm making a rain shader inside UDK for my folio :

https://vimeo.com/40859784

It's WIP so it needs many improvements.

Xendance · Apr 2012

Very nice

Rob Macko · Apr 2012

Cool it looks good so far

Money · Apr 2012

Looks pretty good.

St.Sabath · Apr 2012

well....... EPIC!!(seriously good job)

Minato · Apr 2012

Great work...couple of questions if you don't mind,first,is it a postprocess material or st else?...and the rain itself,is it a particle system or st else?...again great job,i think it's the best rain system i've seen,ever...on any engine,lol...^^

tharle · Apr 2012

yeah very nice indeed - any chance that you could share your workflow?

a couple of small crits - firstly the video is way too quick and jerky, i really want to study the effect properly but the camera keeps moving around too much! for your proper folio piece i'd recommend capturing a matinee camera so it's nice and smooth and shows the details.

secondly on the floor and vehicle it might be nice to have some variation in the scrolling part of the shader. currently the rain drops look good but the run off part is just scrolling at a constant speed - real water clumps up into channels and valleys etc. would be really nice as well if you could use the world up vector somehow so that the rain always falls but i'm not sure how easy that would be.

TheMetaMorphe · Apr 2012

Thanks for the feedbacks !

Minato : It's a custom material and for the rain it's just a cylender with a scrolling texture. Thanks !

tharle : Actually the water is falling using a World Up vector. It's not perfect for now and I'm looking around to find a better way to do it. For the floor I'm using a flow map for the scrolling movement so I think I can do a lot better with more work on the flow map texture.

Thank you !

Rob Macko · Apr 2012

I as well would be interested in any amount of info you're willing to share on this. I haven't made a rain shader in UDK before but I would definitely like to know some method

roosterMAP · Apr 2012

wow, that looks incredible. I also like the sounds you added for rain falling on the barrels.

TheMetaMorphe · Apr 2012

I'll make a paper on it but I don't know when since it's not perfect yet

.

Thanks !

Surfur · Apr 2012

Looks amazing! For the past few days I've been trying to create a similar effect so i have a few questions.

You mentioned earlier that it was a cylinder that had the material on it. Was the cylinder propagated through the map? or was it a cylinder that followed the player around?

I noticed in a few of my tests using planes and cylinders that it was very graphic intensive to have all that material being displayed over and over again, that's why i've been trying to find a post process way of showing rain. So how do you get around the intensiveness of the material through the world?

Also is there any, any chance you could release this for us to play around with! i would love to learn what you did, it looks amazing!

Sandro · Apr 2012

Are you using world projected texture for this or are you scrolling rain in uv space?

Addi · Apr 2012

looks good, is the cylinder attached to the pawn?

Donavonyoung · Apr 2012

Wow that is some really solid work there. Very Impressed.

Leodido · May 2012

great stuff, it's a pain making rain in UDK

SirCalalot · May 2012

Wow, this is some of the best rain I have seen in Unreal Engine - even better than Gears 3!

Cordell Felix · May 2012

woww!!! share the shader!! haha

gsokol · May 2012

This looks pretty pimp..like everyone else said, id be cool to see how you set it up...I'm looking to set up something kinda similar.

Ace-Angel · May 2012

The last time they visited this site was 20 days ago, and the last time they posted anything was in their WIP page, about 2 months ago.

So yeah, take it for what you will.

Minato · May 2012

Every time that this thread gets bumped up i think finally metamorph has decided to let us know a tiny bit more about how this shader works...and every time i close the tab more disappointed...oh,well,there's always another day,and another fruitless bump,lol...^^

SirCalalot · May 2012

It's the 'FoodForTheEye?' thread all over again :P

[/nothelpingbybumping]

Darkleopard · Jun 2012

Thats awesome! great work! How long has this taken you so far?

TheMetaMorphe · Jun 2012

Ok guys here's a package wich contain the floor mat. It's not my most up to date mat but
i'm sure you'll find it usefull.

https://dl.dropbox.com/u/1812933/UDK/CG_RainV1.upk

Enjoy !

imbueFX · Jun 2012

Awesome thanks for following though! I'm going to comb over this tonight.

tristamus · Jun 2012

WOW....man...thanks AGAIN! (AND thanks for the SSS Shader! Fucking awesome!)

Minato · Jun 2012

OMG thanks a lot meta,really appreciate you sharing this with us.thank you.

SirCalalot · Jun 2012

Cheers @TheMetaMorphe!

I've actually been recreating similar rain effects based on your video recently (a part of me wants this to be very similar to what I've come up with

)

I'll have a look on Monday!