» GPU Fluid Solver
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GPU Fluid Solver

effect shader pixelshader navier-stokes gpu fluid-solver fluid
Credits: flux


Fluid dynamics using Navier-Stokes equation computation on the GPU, adapted from RENDERMONKEY sample FluidFlow.rfx and NVIDIA


16.07.14 [12:22 UTC] by sanch | 2782 downloads
DX11 version
Show 2 older revisions

Older Revisions

17.10.13 [18:29 UTC] by flux | 1338 downloads
Adapts to window aspect ratio automatically
19.08.12 [02:18 UTC] by flux | 1594 downloads

lasal 19/08/2012 - 01:42

Great contribution.

sanch 19/08/2012 - 04:01

awesome thx!!

catweasel 19/08/2012 - 13:12

Nice work! Tried many times myself and failed dismally!

tgd 19/08/2012 - 13:57


CeeYaa 19/08/2012 - 15:20

hui __ VVVV on LSD

u7angel 19/08/2012 - 22:16


lecloneur 19/08/2012 - 23:09

massive !

sinus 20/08/2012 - 11:15

fantastic! thank you. ink texture is massive.


tekcor 20/08/2012 - 11:53

amazing and so performance friendly!

m4d 20/08/2012 - 12:10

nice port

dottore 20/08/2012 - 14:39

nice indeed :)

screamer 20/08/2012 - 16:21

wow, great one, it was a lot of time that i tried to convert that multipass shader without results, great great great :D

Desaxismundi 21/08/2012 - 21:37

Just great! Tx.

Noir 22/08/2012 - 00:20


robe 22/08/2012 - 09:49


newemka 28/08/2012 - 19:31


DiMiX 31/08/2012 - 11:28

spreadable... very nice!

mediadog 03/09/2012 - 04:03

Fabulous. Here's a quick test I did using Xtion/Kinect points as input with a cycling input color on vimeo.

The motion, even at 512x512 and 300 iterations, is beautifully smooth. Thanks SO much, I've wanted this in a shader for ages.

Martin Zrcek 21/09/2012 - 15:10

Well done

Alec 17/10/2013 - 11:07

Guys, how can I adapt the final render of this contribution to a render with different aspect ratio without deforming?

flux 17/10/2013 - 17:44

@Alec, have a look at the new version, that's what you need, I guess...

Alec 17/10/2013 - 22:23

@flux: Yep! Thank you!

rink 30/10/2013 - 16:28

Very very nice, especially with the Leap Sensor.

mrboni 16/07/2014 - 12:22

Should it work to use camera tracking + optical flow to control this?

sanch 16/07/2014 - 13:04

yes should work

DiMiX 16/07/2014 - 15:08

how u join tracking values and optical flow?

sanch 16/07/2014 - 18:56

you just need to use opticalflow shader directly on the camera input no need tracking node , then add the opticalflow shader inside the velocity pass instead of the mouse shader , and add black and white version for color in the other module.
It should work , i did it once with good result.

sanch 18/07/2014 - 01:35

use a constant shader instead of the fullscreenquad , the quad can't render negative float from optical flow , inside your optical flow module set dx9texture to 32bit

lasal 18/07/2014 - 15:07

Hey Sanch, thanks for the update,

btw, do you know how to generate obstacles?

sanch 18/07/2014 - 16:47

yeah add a black layer in the velocityfield module, with blend mode disable or multiply

DiMiX 18/07/2014 - 20:37

thanks sanch.
it looks better but i have some strange explosions


sanch 18/07/2014 - 22:22

i'm afraid i don't have time to help atm , but i think trying to tweek optical flow param and blur the opticalflow output will help , but not sure if there is blur for 32bit dx9 .

idab 26/01/2020 - 18:36

@sanch: how can I use ink texture pin? I tried to connect a texture but nothing happen. Any suggestions?

idab 31/01/2020 - 17:19

Did anyone ever play with ink texture pin?

Noir 31/01/2020 - 20:03

@idab I noticed this thing times ago...
It doesn't work because in the pixelshader the "InkTexture" is commented (AddDensity line 68)

anonymous user login


~3d ago

joreg: absolutely. if it is for a repo that is public, just submit a pullrequest. otherwise please start a forum thread.

~3d ago

benjawmino: @joreg I ended up figuring out BezierSegment yesterday, so nevermind! Tell me, could a user submit a help patch? :)

~3d ago

joreg: @benjawmino please elaborate on this question a bit in a new forum thread. otherwise it is hard to answer..

~4d ago

benjawmino: so are there no splines/curves in gamma yet??

~8d ago

skyliner: wanna do drone shows or applications? then check this super cool project of our man e1n

~12d ago

NoseBleedIndustries: Thanks Joreg! The few minutes I was able to see, very good workshops!

~12d ago

joreg: @NoseBleedIndustries please give us some days, we'll have an announcement soon...

~12d ago

NoseBleedIndustries: I could not assist the Node20 (workshops ) Any Idea when we will have access to the links of the recordings?

~14d ago

bjoern: unity has c# bindings for usd, under apache license: https://github.com/Unity-Technologies/usd-unity-sdk