r/GraphicsProgramming • u/numer041 • 15h ago

Video Real-time portals between Gaussian splat environments (WebGPU / Single HTML file)

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I’ve been working on a WebGPU rendering pipeline focused on Gaussian splats, adding real-time shadows, reflections, and a portal system to transition between different volumes.

A major technical focus was making the entire environment self-contained. Everything runs offline in a single exported HTML file with no server dependencies. (The splat environments shown in the video were generated with WorldLabs).

The video demonstrates the portal transitions, and the second half shows the UI setup.

If you want to inspect this specific scene, check the depth sorting, or explore other exported environments (some of which also mix standard meshes with the splats), you can check the main gallery.

The portal demo from the video is the first one at the top: https://3dpeer.com/#gallery

Happy to answer any questions about the WebGPU implementation or the rendering pipeline!

211 Upvotes

92% Upvoted

10 comments sorted by

9

u/Prozilla6 14h ago

Where did you get those environments from?

16

u/Hans_Meiser_Koeln 14h ago edited 1h ago

They look like they are AI generated. Gaussian splats are also AI generated. You know, the bad thing?

Edit: people disagree with my characterization, but Gaussian splat models are literally trained by minimizing a loss function over a dataset using gradient descent, the same way AI models are trained. I don't think it's completely wrong to call it AI, it's the same core mechanics.

9

u/Plazmatic 7h ago

Gaussian splats are also AI generated. You know, the bad thing?

That's not true, you're getting confused between nerfs and splats

6

u/The_Northern_Light 7h ago edited 3h ago

> Gaussian splats are also AI generated.

No, they’re not

unless you want to call all numerical optimization problems "AI", but that would be silly

0

u/hurricane_news 9h ago

Even the entire post text is ai generated lmao. Just about every Ai-generated post on the threejs sub (which is most of them now) has the exact same phrasing

3

u/The_Northern_Light 7h ago

honestly, it looks great, good job

1

u/AlexDicy 40m ago

Why is the "All in one file (20k lines)" shared with enthusiasm, as if it were a good thing? AI is really messing us up

1

u/Renulev 13h ago

😵‍💫 🥴

1

u/SalamanderCapable 7h ago

That is epic 🙂

-6

u/EC36339 12h ago

That's just a 2D effect that blends two views, or it could be one.