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Technical Discussion » How to blend Low and High res result of SOP Flip sim

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CeeGee
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Pavini
GlennimusPrime
tamte
here Igor describes one of the ways to blend them https://www.youtube.com/watch?v=merqe0uYrKM [www.youtube.com]

Igor goes into quite a bit of detail, but doesn't quite touch exactly on what's going on inside his blending vops.

Would love to know specific settings (or any other method available) if anyone has tried this approach before?


I agree, and He didn`t make available to download the hip.

In houdini 20 you have node call flip volume combine, that do same thing that i did in my presentation in h19.5
its also better then what i had because you can use it for wwater sim blend also
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Solaris and Karma » Ocean and Karma

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CeeGee
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Pavini
CeeGee
I did free tutorials on Karma Water FX render
So everything from Mantra we transfer to Karma, you also have example scene files. So maybe this can help

video]https://www.youtube.com/watch?v=NN0SbcReOek [www.youtube.com]

The problem is this video uses the same shader from mantra, but the procedural shader from karma also allows us to control the displacement, a thing that this node of video doesn't.

Not sure if i understand, control displacment in what way?
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Solaris and Karma » Ocean and Karma

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CeeGee
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I did free tutorials on Karma Water FX render
So everything from Mantra we transfer to Karma, you also have example scene files. So maybe this can help

video]https://www.youtube.com/watch?v=NN0SbcReOek [www.youtube.com]
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Work in Progress » Houdini 16.5 - Fluid NarrowBand simulation

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CeeGee
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AlphaJoe
AlphaJoe
Esteban Diacono
Hello. Probably off subject, but I'm trying to simulate the sinking of an object in a tank, and can't find a proper or clean way to disable the Narrow Band sim. Any tips? Thanks.
I am looking for the same thing. I don't know enough about how the narrow band is constructed to know what to change to get the old flip tank back.

Oop, nevermind, I found it. When you use the shelf tool it creates a narrow band tank. Just go to the flip object in the AutoDopNetwork, and under the Initial Data tab change it from narrow band to Particle Field. It should then give you the old flip tank setup.

Sorry for late reply, yes under inital tab you can chage to old flip tank setup.
Edited by CeeGee - Dec. 19, 2017 17:24:51
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Work in Progress » Houdini 16.5 - Fluid NarrowBand simulation

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CeeGee
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raoninery
thats very cool!

Would be nice to read some articles about the usage of this new feature. I turned on the narrowband option but i think it is not working at all.

So i guees that there is more steps to configure it. Am i right?


Cheers

NarrowBand in ON bu default when you create Flip Tank from Shelf, you just get small layer of fluid inside your container. Its best to use in Tank setup where you need more depth to get proper look of your simulation,

xilofoton
Hi,

Great! So you created this shark scene for the 16.5 demo. Did you use the new “incompressibility” feature for bubbles, or how did you achieve this “boiling after splash” effect? This makes it exceptionally real, I think. This phenomenon is usually missing from water sims or not enough real.

No i didn't use new “incompressibility” feature, everything come from simulation, because now tank have more depth, not like in past where you are limited to have only surface to save memory and sim time. So everything come from collision and flip simulation.
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Work in Progress » Houdini 16.5 - Fluid NarrowBand simulation

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CeeGee
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I used 2 workstations for this test

i7 4790 with 32GB of ram and 2 x Xeon E5 20core per cpu with 128GB of ram.
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Work in Progress » Houdini 16.5 - Fluid NarrowBand simulation

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CeeGee
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I had chance to test new Flip NarrowBand workflow and wanted to share resaults with community



Shark mesh details
Edited by CeeGee - Nov. 8, 2017 03:23:52
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Houdini Learning Materials » New online school for Houdini and arnold

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CeeGee
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Hello Guys,

Saber Jlassi and Igor Zanic are glad to announce the formation of REBELWAY CO, an online school that will focus on producing the most high-end online training.


Our goal is to teach Sidefx Houdini primarily along with high-end renderers like SolidAngle Arnold and realtime rendering technology like Unreal Engine 4.0.


We are proud to announce our very first workshop aimed at teaching Procedural Assets Creation In Houdini. This workshop is for all 3d Artists who want to dive into Houdini and use it for environment creation for VFX and Games.


Promo video:
https://vimeo.com/sabervfx/rebelway [vimeo.com]

Course link:
https://rebelway.net/advanced-asset-creation-in-houdini-for-vfx-and-games/ [rebelway.net]

Note: all the renders are straight from arnold


I hope you guys like the content and find it interesting.
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Technical Discussion » Noisy point renders in Mantra

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CeeGee
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You got some good info here about your problem, and how to solve it.

Here is one more idea that you can try, using Raytrace and deepshadow maps
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Houdini Lounge » Exporting the FLIP surface visible in the Visualization tab.

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CeeGee
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Hi Brandon,

You can try using convetVolume, or convertVolume with volumeResample to add more details and use diffrent filters.

I did simple setup, with velocity transfer to mesh.

Igor
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Houdini Lounge » Pyro Explosion with tutorials and project files.

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CeeGee
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Realy nice tutorial, great work.
Thanks for sharing
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Technical Discussion » Memory Leak in H13 with Flips maybe ?

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CeeGee
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Not sure about your houdini settings, but i manage to run 80mil particle sim in houdini with only 20GB of ram on linux,
https://vimeo.com/74197060 [vimeo.com]

And 55mil, with small grid scale ( use more memory) with only 18Gb of ram
https://vimeo.com/82942136 [vimeo.com]

Be sure to optimize your scene before run some high res simulations.

Igor
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Technical Discussion » openVDB mesh motion blur to alembic

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CeeGee
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hi redpaw,

Before export to alembic, if you display WORKING null node, you have subframes motion, only after export to alembic look like you lose subframes and only have integer frames. So maybe something with alembic export.

Igor
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Technical Discussion » openVDB mesh motion blur to alembic

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CeeGee
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hi redpaw,

I just think your workflow is problem, like Infernalspawn sad.
You can chk this scene, your workflow and working one. Just display v attribut.

I hope this help

Igor
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Houdini Indie and Apprentice » how to create more splashes in my ocean

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CeeGee
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Hi, yes entire foam and splash are whitewater
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Houdini Indie and Apprentice » how to create more splashes in my ocean

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CeeGee
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Hi,

First i think you need more resolution in flip simulation,
you can try to change smooting to 0.125 or maybe lower insted of 0.3,
but with more resolution you will get more splash look

i did similar test https://vimeo.com/65490463 [vimeo.com]

Igor
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Technical Discussion » Selecting a few particles in a FLIP fluid

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CeeGee
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Or maybe scene from old school

http://forums.odforce.net/index.php?/topic/15486-bubbles/page__hl__bubbles [forums.odforce.net]
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Houdini Indie and Apprentice » Houdini Flip Resize

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CeeGee
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Hi,

There are few posts on Odforce

http://forums.odforce.net/index.php?/topic/15282-houdini12-flip-customize-resize/page__hl__%2Bflip+%2Bresize [forums.odforce.net]

http://forums.odforce.net/index.php?/topic/17135-flip-auto-resize-tool/page__hl__%2Bflip+%2Bresize [forums.odforce.net]

Hope this help
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Houdini Indie and Apprentice » Houdini vs Naiad

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CeeGee
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Yes you can use diffrent smooth, depend what you need for your shot.
In this example i used default workflow with Laplacian Flow and work realy nice

https://vimeo.com/62684642 [vimeo.com]

Igor
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Houdini Indie and Apprentice » Houdini vs Naiad

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CeeGee
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Hi johnnycore,

Yes for my flood scene i used VDB meshworkflow, i notice if you have flat surface its little hard to get clean mesh, you need some smooth filtering, but for flood, waterfall stuff mesh was fine.
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