All Posts filed under “Free Tutorials

Geometry Nodes Simulation: Relax Points

Often you’ll need point distributions with non-overlapping points. Be it that you want to pack scales onto the surface of a fish or distribute vegetation on your procedural terrain. Although the “distribute points on faces” node comes with a poisson disc mode to remove overlapping […]

Stable Diffusion 2.0 Quickstart

It’s come so far that even Mo couldn’t ignore AI any longer, so he reluctantly started diving into diffusion models. When he emerged a month later (and very unkempt) this is what he found out. This tutorial covers installing Stable Diffusion 2.0 using Automatic1111’s webUI, […]

Geometry Nodes Simulation: Advect by Curl Noise

Simulation inside of Geometry Nodes is finally possible with this “buffer” hack. After setting up the sim environment, Manuel explains to you what the curl of a vector field is all about and implements a version of curl noise to drive some simulated particles. Download […]

Connect The Dots with Geometry Nodes, The “Plexus” Effect

This time we’ll create the “plexus” effect with Geometry Nodes inside of Blender. Manuel shows you how to abuse geometry to fake a loop, that tests all connections between the points of an incoming point cloud and compares their lengths. Then, only the ones are […]

Quick Tip: Setting Up A Default Scene In Houdini

Mo is back from berlin where he spent a few days with Colors And The Kids One of the questions tackled there was how to set up a scene file that’d automatically load when Houdini started up. Turns out Houdini looks for a few script […]

KarmaXPU Quickstart Pt.4: Excursion – Visualizing Lipid Membranes

Notes:– I’m recommending to stay away from refractive materials in rendering. This is due to the fact of this particular group of students having limited rendering resources. If however you have those resources, go wild! Mo had the pleasure of joining Dr. Jeroen Claus of […]

KarmaXPU Quickstart Pt.3: Excursion – Visualizing Proteins

Notes:– It *could* be that 1 Houdini unit = 1 angstrom (which is 0.1 nm)– I’m recommending to stay away from refractive materials in rendering. This is due to the fact of this particular group of students having limited rendering resources. If however you have […]

KarmaXPU Quickstart Pt. 1 – Basic Lighting, Shading & Rendering

In this tutorial we’ll shade, light and render the geometry we created in our previous tutorial, inspired by Alex Valentina’s Work for Form Mag. We’ll be setting up a simple scene graph in solaris, import and light our geometry using an HDRI and then spend […]

KarmaXPU Quickstart Pt. 0 – Creating Our Test Geometry

It’s finally time we talk about Karma again. Nope not your spiritual system, but Houdini 19.5’s built in new’ish rendering engine. It’s been making quite fast progress since the time it’s been released a few versions back, so in our opinion with KarmaXPU being in […]

New In Houdini 19.5 Pt 4: SOP FLIP Fluids

One of the major milestones in Houdini 19.5 is the SOPification of FLIP fluids – allowing for a much more streamlined setup of fluid simulations. In this video Mo goes over the basics of the new workflow, including custom viscosity and density for our liquid. […]

Better Texture Tiling

Even if you have a perfect tilable texture with seamless borders you often run into problems when tiling the same texture often to cover large areas. If your texture happens to be irregular you might want to give this tiling trick a try to make […]

Procedurally Create Detroit Agate with a Karma Shader

If layers over layers of car paint accumulate in the factory over the years they create grey rocks with magic hidden inside. Once you start to cut and polish these rocks all the individual color layers are revealed and create a color explosion. In this […]

Procedural UV Unwrapping with Geometry Nodes

This tutorial uses Blender 3.3 Alpha. You can get this version from here: Download Experimental Builds Blender 3.3 Alpha adds nodes for procedural UV unwrapping. In this quick tip tutorial Manuel explains one way of using the new feature on some procedurally built rocks.

Noise Advection with Geometry Nodes

Advecting points through vector fields is often handy for different purposes. It can be used to visualize noise fields or vector volumes or just to create some beautiful abstracted graphics. Follow Manuel in this tutorial, while he hacks Geometry Nodes to make iterative advection along […]

Giving Birth Using Vellum

Sometimes we get the weirdest questions. And we’re quite thrilled about them! This time our friend Patrick (https://www.altshift.de/) approached us with a.. let’s call it special Vellum setup and some questions about how to make all Elements interact properly and animate them. Resulting in whatever […]

Demystifying Sevilla’s Parasols: Waffle Structures

At a recent Houdini meetup, Luc Morroni came up with quite an interesting tutorial topic: Procedural waffle structures, like the ones used in Sevilla’s Metropol Parasol. Seems easy enough at first I thought – but as always, the devil’s in the details. In this case […]

Demystifying Hamburg’s Concert Hall’s Acoustic Panels

Having visited Hamburg recently I was smitten by the city’s concert hall, the Elbphilharmonie. What looks quite minimalistic from afar turns out to be an incredibly detailed building. Of special interes to me were the acoustic panels within the main concert hall, developed by Yasuhisa […]

OFFF Special: My First Vellum Sim

Back from OFFF 2022 and well rested, we managed to upload our talk’s very quick example of how to build and export your very first Vellum cloth simulation in Houdini. Enjoy! Download Project File

Creating An Abstract Wire Sculpture

One of those classic setups again! This time we’re combining custom point advection with a few nifty techniques in Houdini to analyze how our base geometry is shaped and where its edges are. Also we’ll talk briefly about a basic rendering setup in Octane. Napoleon […]

Packing Rigid(ish) Bodies In Vellum

Yes, we covered this in our “packing the Torus” tutorial, however back then we didn’t have Vellum! You draw the conclusions yourself! Seriously though, using vellum for rigid body intersection detection and resolution can be a neat trick when you’re depending on a unified simulation […]

Python in Houdini: Controlling An Embroidery Machine (DST Export)

In what might be our most useless Houdini tutorial to date, Mo covers exporting Houdini geometry for use in an embroidery machine. Yep that’s right. You’re welcome. Setting up Python for Houdini: https://youtu.be/aUdC8p17QEc Virtual Embroidery in Houdini: https://youtu.be/RgLcREpwaU4 Info on the .dst file format: https://edutechwiki.unige.ch/en/Embro… […]

Pack Points inside Objects with Geometry Nodes

Geometry Nodes offer a node to distribute points on the surface of another object. But scattering points inside of the volume of a object is not as simple. In this tutorial Manuel explains how to build a Geometry Nodes setup that does just that. First […]

Houdini Tutorial: Melting Things using FLIP

Learn how to turn any object into molten lava by adapting one of Houdini’s presets to liquify any geometry. Ben Watt’s tutorial that triggered Mo to look into this. While we’re not talking about shading & rendering in here, we provide a scene file that’s […]

Render Houdini Particles with Blender CyclesX via Geometry Nodes

Transferring data between DCCs is a cumbersome but necessary task. Particles are not yet supported via nodes inside of Blender for example and usually come in from somewhere else. In this tutorial Manuel shows you how to create a surface flow particle effect inside of […]

Smearing Paint using FLIP

We’ve been asked by Patrick how to pull off something like these beautiful paint smears in Houdini, so we got to work. Using basic FLIP techniques will get us quite far, we just have to find the right settings. (Haha. “just” finding the settings…) In […]

Quicktip: New Grouping Behaviour In H19

By a comment on one of our videos on YouTube we stumbled upon a strange behaviour in H19 which took us a few minutes to figure out. Turns out grouping expressions are evaluated slightly differently in Houdini 19. A single short forum post got us […]

Ribbon Knot pt.2: Art Directing Wrinkles

In our last free tutorial we tied a ribbon into a knot, but what if you want (or need) to work on details like wrinkles or want to reshape parts of the knot? In this tutorial Mo covers one technique to arrange the detailed shape […]

Tying A Ribbon Knot in Vellum

That special season of the year is creeping ever closer and you might be starting to think about gift wrapping. One important aspect of which is the decorative ribbon that goes around it. Not that we’re particularly talented at arts and crafts, but we were […]

Geometry Nodes 3.0 – Plant Growth with Fields

Now that Blender 3.0 is in beta it is time for a little more advanced setup. In this tutorial Manuel will build a multi-layered growth effect. Fully procedural plants are scattered on a procedural terrain and controlled by an effector empty. They all grow individually […]

Test Driving Houdini 19: Creating Wrinkles & Rendering Them In Karma XPU

It’s Halloween(ish). – so Mo decided he’d create something creepy. And this is as creepy as his mind gets. No judging. In this tutorial we’ll cover the creation off stress maps to drive the procedural generation of wrinkles using Houdini’s Karma XPU and MaterialX displacement. […]

Test Driving Houdini 19: Poisson Image Blending

Houdini 19 has been released and Mo is taking it for a test drive. As far as you can drive any software. (I mean a car’s firmware you’d definitely drive…) In this video, Mo demonstrates the canonical example for one of the more popular image […]

Test Driving Houdini 19: Injecting Packed Primitives

Houdini 19 has been released and Mo is taking it for a test drive. As far as you can drive any software. (I mean a car’s firmware you’d definitely drive…) In this video, Mo modifies the abstracted sculpture we built in part one by using […]

Test Driving Houdini 19: Karma XPU, MaterialX And A Hidden Gem

Houdini 19 has been released and Mo is taking it for a test drive. As far as you can drive any software. (I mean a car’s firmware you’d definitely drive…) In this video, Mo builds an abstracted sculpture out of minimal surfaces by using H19’s […]