r/Houdini • • Sep 16 '26

Announcement NEW RULE: /r/Houdini AI Policy

293 Upvotes

TL;DR Don't post generative AI stuff or post about AI in general here. Go to /r/AIForHoudini for this!

r/Houdini is a sub for artists, including technical artists, to talk about using Houdini, show off our artwork and tools, and help each other through production problems. It is decidedly not a sub to talk about having someone or something else do it for us.

In order to prevent this sub from drowning under tidal waves of AI slop, we have to draw a line in the sand regarding what is and is not considered AI slop. This isn't an incredibly clear line to draw, but we're going to try anyways.

To do this, we're going to try to make a distinction between generative AI (slop) and machine learning algorithms (not slop). This is mostly a question of user agency. If you are essentially contracting out a bot to do your work for you and then presenting it as your own, that's AI slop. If you are using generative AI to create final images from flipbooks, that's AI slop. Conversely, if you are using ML algorithms to massage data within an otherwise intact Houdini art pipeline, that's okay.

Some more examples:

NOT SLOP

  • Training an ML algorithm with Houdini
  • Using ML algorithms to filter or process data in Houdini
  • Using agents to assist in coding a tool you understand how to debug and implement

SLOP

  • LLMs, including using an LLM to build Houdini networks
  • Using genAI to make final renders from flipbooks
  • Vibe coding tools with minimal or no production experience in Houdini
  • Posting LLM-generated answers to questions here or telling users to "just ask [bot]" for an answer to a question

We realize these definitions are not 100% perfect and there may have to be some judgement calls with specific posts. Not every project that has some AI use in it is necessarily slop. Feel free to use mod mail to discuss your concerns with any specific posts being removed or not removed.

What if you want to discuss generative AI in the context of Houdini?

There is now a subreddit for that! Please visit the unaffiliated /r/AIForHoudini subreddit for all generative AI discussions involving Houdini.


r/Houdini • • Sep 09 '25

Announcement Reddit blocks Gumroad links without notice

37 Upvotes

Hello Houdiners,

I wanted to give people here a heads up that Reddit blocks links to Gumroad site-wide. Posts are removed without any notifications to the moderators. We can manually reinstate them, but without any notifications it's something we have to manually dig around for.

This ban includes both posts and comments. If your product is on Gumroad or a domain "powered by" Gumroad, any post linking to it will be removed by Reddit (again, it's not us doing it!). We have no control over this ban and again the only thing we can do is manually "un-remove" posts if we notice them.

I recommend anyone selling digital products here to consider another service, like Ko-Fi or Paddle or Patreon, or at least link to something that is not directly a Gumroad page.


r/Houdini • • 6h ago

Animation animation practice

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39 Upvotes

I am practicing my animation skills in Houdini Apex (own Rig Model etc.) I would love to get some feedback on the animation. The animation is roughly based on a scene from the Hobbit movies.


r/Houdini • • 14h ago

Simulation WIP Baseball noun

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95 Upvotes

Working on some grapeish thing any advice?


r/Houdini • • 10h ago

Simulation Hello Halloween!🎃

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27 Upvotes

Some quick artwork. Karma renderer


r/Houdini • • 12h ago

Simulation Elastic Bloom¹¹

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11 Upvotes

💎 More works:
→ Instagram
→ LinkedIn


r/Houdini • • 6h ago

PAID CONTENT New Workshop: Houdini From Scratch to Film-Quality FX

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4 Upvotes

r/Houdini • • 8h ago

NEW USER [HELP] Animation Offset with Veg Sim

1 Upvotes

Hello there!

I am trying to offset the animation of a few cached sims I have of vegetation. I simulated the movement using vellum, looped and reversed the animation and then cached it. I then scattered the vegetation using copy to points and a heightfield map, using an attributeadjustinteger to use a random pattern.

I followed a few tutorials but none of them worked. The plants are either static or they all keep their frame consistency.

I would gladly share the file with anyone interested but it is quite heavy, as I miscalculated the size of the heightfield... so I hope the screenshots are enough. I am a beginner and just starting out in Houdini, so any help with this issue will be appreciated.


r/Houdini • • 1d ago

Black spots when combining emissive materials with Karma fog box

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6 Upvotes

Hi fellow Houdiniasts 😄 Does anyone recognise these black spots when combining emissive materials with the Karma fog box? Denoisers don't know how to handle them.

I've tried all kinds of settings but nothing seems to fix it.

Rendertime: 12+ hours on a Nvidia 4080 super
Resolution: 2540 x 3370 px
Renderer: Karma XPU
Path traced samples: 8192
Color limit: 250 to boost the light in the scene


r/Houdini • • 1d ago

Displacement Map issues

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2 Upvotes

I have issuses with my displacement maps in houdini solaris, when i use normal grayscale image it works, but when i export either a Height map from substance or a displacement map from zbrush i get the result of the image above. Any ideas what causes this. Thanks


r/Houdini • • 2d ago

PAID CONTENT MOPs+ Floating Licenses now available!

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54 Upvotes

MOPs Plus (the commercial add-on to MOPs) has previously only supported node-locked licensing, but there is now a floating license server (FLS) option available for users who want the flexibility to share a pool of licenses between multiple computers.

The license server currently runs on Linux only but will eventually be expanded to all platforms. The client HDAs remain completely cross-platform.

You can get more information about MOPs Plus here: https://motionoperators.com/info/mopsplus/


r/Houdini • • 1d ago

NEW USER Fur and skin separated

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3 Upvotes

Does anyone know why this is happening and how to fix it.


r/Houdini • • 2d ago

What is Houdini good for besides simulations?

9 Upvotes

Hey everyone, I'm pretty new to Houdini. I know it's famous for simulations like fire, smoke, water and destruction, but I'm curious which other areas it really shines in.
What do you use it for outside of sims? Procedural modelling, motion graphics, game dev, something else? I'd love to hear about it.
Thanks!


r/Houdini • • 3d ago

3D Wood Grain Experiment

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269 Upvotes

was experimenting with a 3d wooden grain system last night. thinking about adding knots next.


r/Houdini • • 3d ago

Tutorial Fractal Generator With OpenCL

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85 Upvotes

Hey there! I have made this fractal generator using OpenCL in Houdini. I made it using the ray marching algorithm sampling in all directions and from random positions. I have also made a tutorial on Youtube showing how I made it. You can check it here: https://youtu.be/WUI84Ct3gvc


r/Houdini • • 2d ago

Material Builder Tool for Houdini

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2 Upvotes

Hi there! I just added a Material Builder tool to my free NH Tools for Houdini, and thought maybe I share it here. Hope is ok, and hope it finds a good home ❤️


r/Houdini • • 3d ago

I vibecoded a connector so you can use your phone to drive a camera inside Houdini or windows gamepad

13 Upvotes

https://reddit.com/link/1xeyfum/video/3spnes5a6lxh1/player

You just need a portable app in Windows, a QR code and a plugin I made inside Houdini, you dont need to install anything inside your phone, works natively.

I just made it and i want to polish it before sharing the source code, but pm me if you are interested, might be easy to port to any other software such Blender, C4D, etc

Also, using almost same code, you can also use your phone as a Gamepad inside Windows, its detected as an USB normal gamepad.


r/Houdini • • 3d ago

MacBook Pro vs RTX Windows Laptop for Houdini — Which Is Better?

2 Upvotes

I’m planning to buy a laptop primarily for Houdini product visualization, Solaris, Karma XPU, and VFX simulations.
Would a MacBook Pro with Apple Silicon be a good choice, or should I go with an NVIDIA RTX Windows laptop?
Does Houdini on macOS support all the features available on Windows, including simulations, GPU acceleration, Copernicus and rendering? Are there any major limitations due to the lack of NVIDIA CUDA/OptiX support?
I’d appreciate recommendations from Houdini artists, especially anyone using a MacBook Pro professionally. Which would you choose and why?


r/Houdini • • 2d ago

Which Degree Is More Useful for an FX Artist: BSc Animation, Design, BCA or BTech? Especially for Working Abroad

0 Upvotes

Hi everyone,

I'm planning my long-term career as a Houdini FX Artist and would like advice from people working in the VFX industry, especially those working abroad.

I'm confused about which degree would be the most useful alongside developing strong Houdini skills and building a professional showreel.

I'm considering these options:

\- BSc Animation or a related design degree

\- BCA (Computer Applications)

\- BTech in Computer Science or a related technical field

My questions are:

  1. For an FX Artist career: Do studios care about which degree you have, or are your showreel, technical skills, and production experience more important?

  2. For becoming an FX TD: Would a BCA or BTech provide a meaningful advantage because of programming, mathematics, and computer science fundamentals?

  3. Working abroad: If I eventually want to work in countries like Canada, the UK, Australia, or other major VFX hubs, which degree would be more useful for employment opportunities and work visa eligibility?

  4. Career flexibility: If I later want to transition from VFX into software development, pipeline TD work, or another technical role, would a computer science degree make that transition easier?

  5. Real-world experience: For those already working internationally, has your degree significantly affected your hiring opportunities or career progression?

I'm trying to choose a degree that supports my FX career while also keeping future technical career options open.

I'd appreciate honest advice based on your actual studio experience, especially from people who have studied these degrees or moved abroad for work.

Thanks!


r/Houdini • • 3d ago

Rain fx simulation tutorial

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2 Upvotes

r/Houdini • • 3d ago

NEW USER Please help with copy to points (beginner)

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0 Upvotes

Hello I'm a beginner in Houdini and I just want to put the wheat at the end point of the line. I grouped it and selected it in copy to points but its floating for some reason? Please help I don't know where to start

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r/Houdini • • 4d ago

Demoreel Tried my best

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10 Upvotes

Been using houdini for 5months.

Open to criticism😭.

Used houdini for everything you see and nuke to combine them.

Wanted to create something from my favorite movie(DUNE).


r/Houdini • • 4d ago

Macbook for Houdini

7 Upvotes

Hi everyone!
I’ve been working with Blender for the past 3 years. Since I mainly specialize in VFX, I’ve decided to make the switch to Houdini.
I’m currently using a PC with an RX 7900 XTX, but from what I’ve read, AMD GPUs aren’t fully supported by Houdini.
Lately, I’ve also been looking for a more portable setup for traveling, so I’ve started considering switching to a MacBook.
That brings me to my question: How well do MacBooks handle Houdini? Would an M5 Pro with 24GB of RAM be enough, or should I go straight for the M5 Max with 48GB of RAM?
Thanks in advance for any advice or recommendations!


r/Houdini • • 4d ago

How to fix gltf textures?

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2 Upvotes

Does anyone know how to fix these holes in an imported gltf?


r/Houdini • • 4d ago

Day one in Houdini: my first donut 🍩

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50 Upvotes

Hey everyone! I literally got Houdini today and just finished my first project, following the “Houdini Isn’t Scary” tutorial. Still feel like I’m in a different universe with all the nodes, but I’m loving it so far.

What do you guys think? I know it’s a tutorial project, but any tips are welcome.

I’ve had a look at the wiki, but I’d love to hear what you’d recommend tackling after a first project like this. Eventually I want to get into FX like fire, smoke and water, but I know that’s a long way off and I need to get the basics down first. What would you recommend learning next?

Thanks!