Water & Ocean Rendering Using Houdini and Karma

In this video tutorial, Saber will show you how to render ocean FX inside Houdini using Karma.
Download the Project Files: www.rebelway.net/ocean-render...
0:00 - Intro
0:40 - Topics Covered
3:26 - Water and Ocean Rendering
13:53 - Water Simulation and Rendering
27:39 - Particle Rendering
32:59 - Ocean and Water Rendering Continued
39:42 - Custom AOVs and Cryptomatte
46:09 - Final Thoughts

[@Jonah_Anthony]

I can’t believe I’m watching this for free

[@Abeencoado]

With your videos my learning curve will shrink drastically. Thank you.

[@Rebelway]

Very welcome!

[@nictanghe98]

10:32 treat object as volume 20:30 setup no primary visability (only bounced / reflected etc). 21:10 velocity v - velocities color Cd -> displayColor 25:65 render as holdout 30:05 render as discs

[@jono8326]

Thanks for sharing. Always wanted to learn more about Karma.

[@mishoristov]

Brilliant work!

[@FaddyVFX]

Great video, i like it 😊 Nice simulation, you use the tool in a very talent way.😁

[@peterpejanovic2652]

Wow, thänx for this great tutorial AND for the scene files! Amazing!

[@Rebelway]

You're very welcome!

[@marcinchester4949]

I've been waiting for this, thank you so much!!

[@Rebelway]

No problem!!

[@marcinchester4949]

@@Rebelway Hi, you mention to watch Karma arrow scene before? Which one is it please?

[@vladyslavlavrenov9167]

These guys are content machines!

[@resilientpicture]

Beautiful

[@omidmotion]

Hi, great tutorial. but the download link to project file is dead. any chance to update the link? Thanks

[@user-tc4wp8et7s]

It's an amazing accomplishment ！

[@mingming1456]

Thanks！u always share alot

[@StraightVFX]

Thanks for the great tutorial! Which HDRI did you use?

[@utubeparpankaj]

Our favourite "Saber"

[@viewee22]

Thank you so much!

[@ifaisalstudio]

Thank you, love it.

[@Rebelway]

Our pleasure!

[@HoudiniZonefx]

Awesome Man!

[@aimsouth8459]

Love It!

[@raimuhammaduzairfareed7628]

Now please make some destruction very detail tutorial and render it in karma. You are a great houdini school

[@Davesplaining]

@rebelway really loving this and felt very straightforward but had some issues with glitching geometry and volume when rendering out to disk, experienced anything like that? any good tips on what to avoid?

[@MarvelousMediaEngine]

I had some glitches too. For example, one frame would ignore the fluid and volume and render only the whitewater volume. Then the next few frames would ignore the whitewater and only render the fluid elements. The final render looked like a strobe effect switching between whitewater and water. The object stayed constant.

[@Davesplaining]

@@MarvelousMediaEngine hey if you have this issue I solved it by rendering points as uniform volume - rather than using the rasterised volume, which I would have preferred.

[@arupsan]

Awesome

[@AnonyMous-rx4ws]

If anyone is experiencing that bug at 11:45 where the ocean becomes blank, go back to the ocean geo node and save the spectra to disk again. I do not know why they removed that part from the video.

[@rajeshkumaragrawal3682]

Hi, I am not able to open the project file, whenever I open, Houdini Crashes. Using 18.0. Pleas ehelp me in this regard.

[@Bjghchb]

INSANE

[@mahmoudsalama4463]

doing well and thanks again!

[@Rebelway]

No problem!

[@littlad]

Really awesome tutorial! Any reason why you didnt use the MaterialX shaders for this? Or is that not supported for this use?

[@oxvcontent1040]

I need a materialx tutorial lol

[@iluvyunie]

@@oxvcontent1040 me too apparently, all my mtlx creations are lacking

[@oxvcontent1040]

@@iluvyunie yeah I just switched to redshift

[@iluvyunie]

@@oxvcontent1040 I did the same thing with octane a while back but 19.5 has all these snazzy features and no octane support yet 😂 desperate times

[@mdsanima]

cool stuf here! thanks

[@axe_fx]

omg you actually did it

[@saberjlassi7606]

We don't have plans for third party renderers, main focus is going to be Karma, Good luck!

[@MarvelousMediaEngine]

Does anyone know how to bind the vorticity and velocity to basecolor if you are using the shelf generated basic liquid material. I see how he binded them into his coreshader, but the default liquid shader that is created with the shelf tool looks so much different.

[@pubudu781]

Amazing tutorial, such valuable information, I've being creating shaders on material x for flip ,white water and oceans, with XPU now simulations are blazing fast. i got everything working properly except the volume gradient for specular, any tips would be really appreciated.

[@kimjongoof5000]

for the materials, what do I set "usd path prefix" to?

[@oxvcontent1040]

Do you guys think you could make this tutorial but for MaterialX. I really want to render on my 3080 and my 10700k has a hard time with volumes. Cheers

[@jaeyoon96]

coooooooooooool :)

[@inspirationalgoosebumps6006]

WOW

[@trishit4vfx]

Awesome..any plans to do some solaris with renderman examples for volume and water shading..

[@saberjlassi7606]

We are going to focus mainly on Karma, however everything should be applicable you just need to find the appropriate shaders for your third party renderer.

[@trishit4vfx]

Great stuff..actually my intention was to see the creative aesthetic side of your developing a water/WW shader when using renderman.I quite liked your videos with Arnold volume shader construction so always on the lookout for your other valuable inputs in terms of aesthetic designing

[@daoduyanhthaiduong]

Hi , i can't dowload project file from the link in description. Can you help me?

[@user-fo5mw3gd7h]

is there any cources about the whiter water with xpu render in houdini 20?

[@gulagwarlord]

Will this work with XPU?

[@tharun-fx]

what are your system specifications and what do you recommend to this kind of simulations

[@timtaxevasion]

big fat beefy cpu and lots of ram ought to do the trick, also a bigger hdd or ssd wouldnt be bad, and while youre at it you can also upgrade your gpu. basically if youre asking these types of questions youll probably need to upgrade your whole rig lol

[@tharun-fx]

@@timtaxevasion then i guess a ryzen 7 and a Quadro p2000 not enough 🥲 how can a 15 year old but a 128GB ram and a RTX 3090 and threadreaper

[@creanefx]

The project file does not work, could you please reupload it.

[@ssemukuyetimothy137]

How much gpu memory is required to render a more complex scene(including explosion and oceans) or like kingkong vs skullcrawler final battle.with gpu alone.is 16vram enough? @rebelway

[@Rebelway]

We usually recommend the same as sidefx does for system requirements listed here www.sidefx.com/Support/system-requirements/

[@KANTITV79]

Nice tutorial, i just cracked soft soft ;)

[@Rebelway]

Glad you enjoyed it!

[@seonghoonlee480]

I can’t download file. Dropbox is not work.😢😢😢 please re upload

[@Kagara]

it would be cool to see you do some stuff from scratch like steven knipping

[@AlexNWIU]

🙌👍🏻👍🏻👍🏻

[@andreyflat3871]

How many disk space used?

[@hongkiekie]

Could you check the project files link plz?! Thanx a lot!!~~

[@kimjongoof5000]

-How come the ocean shaders become a simple diffuse glossy shader when imported to K? There's not even as many waves as Mantra -Why is dicing not an available option in RenderGeometrySettings -Why is the lighting completely different in K compared to M?

[@CarrotGamingYT]

how much did it took to render this clip? time!

[@TheRoc35]

Downloaded the Project Files but I cannot find the HDRI tex "Cloudy_Sun28deg_etc.rat"'. Anyone experienced the same issue?

[@skinsnake6316]

想问一下 我用houdini 20做水的特效 ，和houdini19相比有什么不同吗

[@nictanghe98]

@widths attribute doesnt seem to work for me

[@Davesplaining]

No cameras found in the USD file Anyone else having this issue when trying to render to disk? Renders fine in hydra and the camera IS in the stream. Thanks for a great video! Edit: Resolved itself when updating to 455.

[@axe_fx]

what issue did you have? ocean spectra just not moving?

[@Davesplaining]

@@axe_fx no issue with that. thx.

[@mrpig4286]

i would like to know that i only have 64G RAM , is that enough to do this shot?

[@axe_fx]

yes, very much yes

[@liangdongzhu3082]

Does XPU works? how much render speed imporvement?

[@axe_fx]

no XPU for these VEX shaders

[@henrique21890]

Can you make a tsunami simulation?

[@gmayur6531]

god bless u xdd

[@accba236]

Can some one tell me what is the recommended spec of computer to do this shot.....???

[@Rebelway]

We recommend using a computer with 32gb ram, but you are able to still use it with smaller than that. It just will take longer. Cheers!

[@accba236]

@@Rebelway Thank you very much, And a little question : The high end CPU and VGA do help that or not ?

[@valentinaalmanza3255]

Fallen Sun yeah! e too

[@redfalconvfx7050]

I wish I can do this in C4D too....

[@xanzuls]

lmao

[@gdalidenkesh731]

i can not download the file

[@user-dt5rz8zp9d]

WHATS YOUR PC SPEC?

[@jaroslawmoor2543]

why don't we use XPU????🤔

[@tetsuooshima832]

Well I tried, it's definitely not for everyone. Still very slow on my CPU, kinda enjoyable on XPU with some previewUSD shader, I don't know what else I could use; many things doesn't work with XPU so without a very powerful CPU I'd better give up on this

[@jimjimjim5995]

those repeating pattern at the beginning is ....😳

[@rezo856]

Show how to render it with arnold.

[@axe_fx]

they arent planning to sadly :(

[@ashrafuzzamankhalid3465]

Wow... Mind is blown... Now a small request. Can we please get a tutorial How to make Cinematic Quality Spiderman Web shooting simulationd. COMPLETELY PROCEDURAL? There aren't any on KZbin actually. it can be the first... Thank you...

[@mansay2057]

How can i get Houdini for freeee?????

[@loostinggg3279]

have too many proprietary restrictions on the user and I want more freedom in importing and exporting projects, soft and video editing

[@user-vq3ev7ef7r]

Sa

[@vorrch]

Hey I've opened your project and the water is pink and I don't know why does this happen to someone else?. It appears this warning: Load warnings for C:/Users/(name)/Downloads/Ocean Rendering with Karma Project Files/water_shading_in_karma.hipnc Warning: Problem while synchronizing child node: Warning: Problem while synchronizing child node: Warning: Skipping unrecognized parameter "firstpointcount". Skipping unrecognized parameter "firstprimcount". [/obj/ocean_surface/oceanfoam1/foam_sim/pop_object_foam/sopsolver1/attribwrangle1]

[@carlosparmentier4927]

no hdri?

[@vorrch]

@@carlosparmentier4927 yes it was, thank you very much I wouldn't have gotten it

[@gulagwarlord]

Try saving the render grid, it's probably looking for the displacement map

[@axe_fx]

SOLVED: in a recent version they did some cleaning on the sopsolver1/attribwrangle1 node thus there is a unrecognized parameter. you can delete that popobject node and rebuild it since you probably updated your H19 version while the project is older.