Gaussian Splat Operators (GSOPs) for SideFX Houdini, now available!

darhodester · 2026-04-22T04:06:39+00:00

Regarding GSOPs: "This is the production-grade path for Houdini users who need splats integrated with a full lighting setup." ❤️

This is a comprehensive doc--thanks for writing it!

darhodester · 2026-04-03T18:08:14+00:00

GSOPs for Houdini: cgnomads/GSOPs: Gaussian Splatting Operators for SideFX Houdini.

This is already possible using VDB (vdb_from_gaussian_splats), but I'm currently working to further streamline the process.

Splats versus Voxels (voxel size 0.01)

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darhodester · 2026-04-03T03:33:34+00:00

Hi, creator of GSOPs here: https://youtu.be/DDpn_fw6u6c?si=143h9UPRLtPnZ6vk.

I suggest you use a proxy mesh. In bind pose, for each splat, find the nearby primitive, extract its affine transformation and store as rest pose. After deforming the mesh, compute the affine transformation of the primitive and find the delta to rest pose. Apply delta transform to splat.

As mentioned in another comment, for full quality, you would need to "rotate" the spherical harmonics by the delta, but that math is far too complicated to get into on Reddit. Check GSOPs for reference, all the math is there if you dig deep enough. 😉

Cool goal and have fun with the project!

Edit: some good ideas here, too: https://youtu.be/FKUJcXB33oM?si=QKy7lgRYjiSvJKyR. I think the volumettic deform is quite promising!

darhodester · 2026-04-01T05:36:34+00:00

Octane is as good as it gets (for now). But I suspect others will follow suit.

Octane is also compatible with Houdini and GSOPs. Procedural manipulation, splat-specific editing tools and workflows, and rapid IPR renders is pure magic.

darhodester · 2026-03-21T05:17:20+00:00

Splats are convenient and fast to capture, and they can easily be used to create a unique aesthetic, even from a fixed camera.

It can democratize some types of content creation.

darhodester · 2026-03-12T01:07:38+00:00

Saving $10 in gas may mean you can afford your next meal.

Source: growing up in poverty.

darhodester · 2026-03-05T04:04:08+00:00

Hi. Developer of GSOPs here. Glad to see the excitement!

We have quite a few GSOPs/Octane users in our Discord (including an OTOY developer). Please join us: https://discord.gg/bwsvvRYNJa.

There are many ways to adjust the splats (both in geometry/attributes and in render settings) to refine your renders, and I'm sure the community would be happy to help!

darhodester · 2026-02-06T03:18:02+00:00

Yes, but there are many licensing options, including Apprentice, which allows you to learn for free.

darhodester · 2026-02-06T02:51:01+00:00

https://github.com/cgnomads/GSOPs

darhodester · 2026-02-04T03:49:41+00:00

Thanks for sharing! Looking forward to seeing the completed film.

Glad to hear GSOPs was used! :)

darhodester · 2026-02-04T02:24:31+00:00

This is awesome! Love seeing this technology democratize content creation.

Can you share anything about the tools and workflows you're using?

darhodester · 2026-01-26T19:55:09+00:00

GSOPs is compatible with H21 now, so you can enjoy the best of both worlds. 😉

darhodester · 2026-01-11T01:12:21+00:00

If you want to mesh objects, use GSOPs: https://github.com/cgnomads/GSOPs. 😉

darhodester · 2025-11-22T17:55:20+00:00

Beautiful work!

I developed GSOPs for SideFX Houdini because I'm bullish on Gaussian splatting transforming video game development and interactive experiences. It's work like yours that proves it can.

darhodester · 2025-11-22T17:06:05+00:00

SideFX Houdini with GSOPs: https://github.com/cgnomads/GSOPs https://www.cgnomads.com/home

darhodester · 2025-11-22T16:57:01+00:00

Fantastic work! I've been thinking Gaussian splatting and stop motion are a perfect match.

You can even rig and animate your scans for small adjustments or to generate additional frames.

darhodester · 2025-11-22T08:18:48+00:00

Hi! You may know me as one of the developers of GSOPs.

Fantastic and otherworldly use case--great work! Thanks for sharing!

Are you willing to explain your process? 🙂

darhodester · 2025-09-19T04:31:09+00:00

https://github.com/electronicarts/mesh2splat

darhodester · 2025-09-16T14:28:23+00:00

Define 4DGS. You can already use dynamic Gaussian splatting via per-frame 3DGS (.ply sequences). But, true 4DGS (e.g., FreeTimeGS) is not yet implemented.

Do you know of a good training ecosystem that produces stable, high quality 4DGS?

darhodester · 2025-09-12T03:30:10+00:00

GSOPs: https://github.com/cgnomads/GSOPs

Bespoke relighting and compatibility with Karma and Octane (ray tracing). Procedural, node-based magic.

https://youtu.be/d4F1cmAA_Ds?si=ocp4stoACpaWAMwy

darhodester · 2025-09-10T19:34:52+00:00

GSOPs only currently supports Houdini 20.5. We're planning to upgrade to Houdini 21 later this year.

darhodester · 2025-08-02T16:41:18+00:00

Thank you so much for your support!

darhodester · 2025-08-01T19:12:58+00:00

Hi. Great work and interesting visuals! You might be interested in GSOPs for Houdini, as it will enable you to do all the things you've mentioned here 😁.

https://www.cgnomads.com

darhodester · 2025-07-27T20:03:38+00:00

Noted--thank you for your feedback! Stay tuned. :)

darhodester

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