All Activity

@Thoi Aloha ! Tjena! Do you have Some illustration on panels??? https://blog.iaac.net/pexel-exploring-parametricism-through-the-lens-of-modularity/

Hi, I’m designing a physical modular column made from flat panels. Each panel needs a simple interlocking edge (tabs/slots or tongue-and-groove), repeated over several stacked segments for 3D printing. Is there a good procedural way in Houdini to: generate the panels add parametric interlocking geometry on the edges control number of segments Should I build one locking unit and copy it to edges, or is there a better workflow for parametric joints? Any tips, nodes, or example HIPs would be very helpful!

This is a particle simulation using popadvectbyvolume (cached volume, no sim). I was lead to believe that particle simulations are single threaded hence the CPU core clock speed matters more than number of cores. this however looks quite multi threaded and the parts where some threads go their own way seem to be file handling I think, or am I reading it wrong?

Solved: one wedge node. wedges count: e.g. 3 2 attributes: min & max each of the attributes gets a value list of 3: min 0.1 - 0.5 - 0.9 max 0.3 - 0.7 - 1.4 right click generate, I get 3 work items, and with overwrite target parapeter on work item selection I can clearly see it's working min 0.1 max 0.3 and so on.

Your best bet is either using Arnold or Redshift if you gonna use both, not Karma. With Arnold and RS you have plugins for both and for the most part you can match basically everything.

Hi everyone, Our team is planning to render elements using both Maya and Houdini. Maya will handle most of the polygon assets and animated props, and Houdini will be responsible for FX elements such as particles, points, and volumes. (I understand that rendering everything in Solaris would be the safest approach, but for pipeline reasons we’re splitting tasks between the two.) On the Houdini side, we’re planning to use Karma, either CPU or XPU, depending on the shot. My question is: which render engine in Maya matches motion blur and holdouts most reliably with Karma? At the moment, the main candidates are Arnold and Redshift. If anyone has recommendations based on real production experience or R&D testing—especially motion blur consistency, and compositing accuracy—I’d really appreciate hearing your insights. Thanks in advance!

I purchased the product and wanted to avoid leaving a bad review, but the HDA is spitting out loads of errors in H21.0.596 and there is no documentation on how to make it work, nor can I find a way to contact the developer. I was hoping that I could have a camera that is 1920x1920 and quickly preview how it would crop to a vertical 9x16 frame as well as a horizontal 16x9 frame, but when using the aspect ratio mode it isn't obvious how to set that up. The buttons also don't have any labels to indicate what their function is and when you hover over them the only text says 0. The console also spits out all these errors when creating or deleting the HDA: Event Queue Full. Events being dropped: UI_EVENT_REDRAW to UI_Window Event Queue dropping 49938 events. Event Queue Full. Events being dropped: UI_EVENT_TIMER to UI_Manager Event Queue dropping 1 events. Event Queue Full. Events being dropped: UI_EVENT_APP_SPECIFIC to OH_UIeventHandler Event Queue dropping 1 events. ✓ Valid — you're good to go. 'wmic' is not recognized as an internal or external command, operable program or batch file. Please let me know where I can go for some user support.

I have an attribute that's randomly populated using min and max values. I'd like to wedge in TOPs/PDG the combination of min and max, not min separately and max separately. So Min = 0.1 and Max = 0.3 this combination is one wedge, one result. If I simply put a wedge with min 0.1 - 0.5 - 0.9, and another wedge with max 0.3 - 0.7 - 1.4, I could end up with the min 0.9 and max 0.1, not what I want. How do I deal with combinations in wedging in TOPs / PDG?

I have the same problem, I've always assumed it's a bug as it usually goes if I open the viewer again in a different tab. It doesn't always work though...

Heya! We're Those Awesome Guys, a small indie gamedev team looking for someone to help us turn our concept art into a robust procedural Houdini city generator, hooked up to Unreal Engine. What you’ll be doing: Turning concept art into a cohesive, procedural CityGen HDA Building systems that play nicely with Unreal (splines, assets importing, the whole deal) Making tools that artists actually enjoy working with You should be comfy with: Designing and building procedural city systems in Houdini Creating and maintaining complex, well-structured HDAs Houdini ↔ Unreal integrations Geometry, attributes, and VEX (you know your way around them) Keeping networks and parameters clean, readable, and organized Bonus points if you like problem-solving, experimenting, and shipping cool stuff with a small team. Please send an email with your portfolio and any other relevant links or info to: welackahrdepartment@thoseawesomeguys.com (yes, it's a real email)

Try adding this parameter tag:

Hi everyone, I created an integer parameter in my HDA. By default, Houdini displays a slider next to the value field. I’d like to remove this slider, but Houdini keeps adding it back to the interface. Does anyone know how to permanently disable the slider for an integer parameter? Thanks for helping.

The most straight forward is Bifrost - Save the pts as an alembic and just read it back in Maya.

I want to hand over the color value and position value to the point generated by Houdini to Maya. I posted the file... What should I do? I think I used to use Bistro before. Now I have no idea. Isn't there a more convenient way? I'm not turning over the data to render, I'm taking the information of the Houdini-generated particles to Maya. I want to use it by instantiating. houdini_to_maya.hip

Can you elaborate? I have no clue what you want to do.

Hi. Thanks for reading. It's a very simple problem. But the biggest problem is that I did the Houdini again in a year. I want to change the abstract figure below to pig shape. In order of color values. Not all at once. I want to put color masks in order of sort number. Thank you for your help today as well. blend.hip

Is the Karma dicing / render time displacement of the ocean single threaded? If you look at the CPU chart (showing 2 frames), the actual rendering happens in the 2 gaps where all threads are at 100% The spectrum bgeo is 36mb! and the mask 240 frame sequence is 230mb There are three visible stages (% time per frame): 1. 50% of the time -> One thread at a time 2. 10-20% of the time -> Right before they all reach 100% there is some dance there, not sure what that is 3. 30% of the time -> all threads at 100% Do you have any idea of what is being done in each of these stages? the last being render because once done the image appears in the render directory.

Subframes help get MB on fast moving objects. You shouldnt enable them on timeline, render automaticaly use them. You should render only frames, all calculations happens on render time.

Check spectrum file, maybe there is no cache on that frames or they corrupted

Hi everyone, just wondering what algorithms the find shortest path node uses to calculate the shortest path, Ive been looking around but I can't figure out whether it's A/* or Dijkstra’s Algorithm - Luca

I'm trying to reproduce a similar motion blur quality as they did in Dune: Here is the exact timing in the video: His first answer is a lot of rendering, but then How, and how to composite it? I can only use the subframes when the "Enable Playback at fractional frames" is active Everything else in my scene is not using any substeps. I do understand one way is to render the asset with motion blur separately, what do I get? exrs with subframes or just frames? if just frames what was the point of subframing, if with subframes what do I do with the subframes in compositing with the other exrs that only have frames? and when I export the composited thing, is it with frames only or subframes. Human knowledge is cumulative, once this level of motion blur quality is achieved in Dune, what used to be 0.01% of the cases has now become the new starting point for motion blur, at least for me.

Hi ! You can use the .12 icon to the right of the viewport to see your point numbers. As you can see, your points are properly increasing. In other words - your sort node works as you intend. You can bypass your sort node to see what the point numbers would be otherwise. The issue is with the logic in your split2 node. 0-`npoints(opinputpath(".",0))`:2 You're saying to keep all points from 0 to 999, but take one point out of two. This does give half the amount of points, but it takes 0, 2, 4, 6, 8, ..., 990, 992, 994, 996, 998 If you look at where 990, 992... are in the above screenshot, they're on "the wrong side". Instead, you want to take the points from 0 to 499, like so 0-`npoints(opinputpath(".",0))*0.5` You can simplify this like so 0-`npoints(0)*0.5` Then coloring your points will give the expected result. sortingbyX_fixed.hiplc

I've got these points that don't seem to want to listen: I wanted to sort them in the x axis, so the 0 is to the left and the highest point number is on the right of the x axis, and the same applies to the first half of points and 2nd half of points. I have placed some colored spheres to visualise and realised my lovely points don't seem care about the sort node (Sort, point By X, couldn't be clearler), or am I doing something wrong that confused them? I would have expected the left side is all red and the right side is all green. sortingbyX.hiplc

Have you come across the weird situation where with the very same file, very same settings, absolutely nothing changed, sometimes it renders the displaced ocean and sometimes it gives that mirror-like surface? that's on the same computer with H21.0.512. Then I move the file to another computer with H21.0.559 and the same none sense starts, this time the first computer starts displacing the second doesn't feel like it. If I kept getting consistently the same mirror-like render I would have thought I have messed something up, but getting randomly one or the other seems rather un-computer like behaviour, is my my hip-file haunted or is it a bug in both H21.0.512 and H21.0.559? displaced mirror-like

For distant ocean areas, it’s usually better to fade out true displacement and rely on a bump or normal map. Active displacement far from the camera adds cost without visible benefit. Using a bump map preserves wave detail, prevents overly smooth mirror-like reflections, and keeps the horizon looking more natural while remaining render-efficient.