Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#1

Post by dmarcos » Wed, Jun 11, 2025, 5:02 PM UTC

I'm the co-creator and maintainer of https://aframe.io/ and long time Web 3D graphics dev.

Super excited about new techniques to author / render / represent 3D. Spark is a an open source library to easily integrate Gaussian splats in your THREE.js scene I worked with some friends and I hope you find useful.

Looking forward to hearing what features / rendering techniques you would love to see next.

Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js
sparkjs.dev

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#2

Post by pvg » Wed, Jun 11, 2025, 5:04 PM UTC

Slightly more obvious repo link https://github.com/sparkjsdev/spark

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#3

Post by moron4hire » Wed, Jun 11, 2025, 5:16 PM UTC

That interactive demo on the front page running perfectly fine on my Pixel 7 was pretty sick!

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#4

Post by erulabs » Wed, Jun 11, 2025, 5:19 PM UTC

Super impressive looking demo, works well on my older iphone.

As an only-dabbling-hobbiest game developer who lacks a lot of 3d programming knowledge, the only feedback I can offer is you might perhaps define what "Gaussian Splatting" is somewhere on the github or the website. Just the one-liner from wikipedia helps me get more excited about the project and potential uses: Gaussian splatting is a volume rendering technique that deals with the direct rendering of volume data without converting the data into surface or line primitives.

Super high performance clouds and fire and smoke and such? Awesome!

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#5

Post by dmarcos » Wed, Jun 11, 2025, 5:30 PM UTC

erulabs wrote: post #4

Super impressive looking demo, works well on my older iphone. As an only-dabbling-hobbiest game developer who lacks a lot of 3d programming knowledge, the only feedback I can offer is you might perhaps define what "Gaussian Splatting" is somewhere on the github or the website. Just the one-liner from wikipedia helps me get more excited about the project and potential uses: Gaussian splatting is a volume rendering tec…

Thanks. We have to definitely add an FAQ

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#6

Post by praveen9920 » Wed, Jun 11, 2025, 5:40 PM UTC

Any plans to extend support for triangle splats?

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#7

Post by dmarcos » Wed, Jun 11, 2025, 5:41 PM UTC

praveen9920 wrote: post #6

Any plans to extend support for triangle splats?

We're definitely looking at it. No specific plans yet

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#8

Post by westurner » Wed, Jun 11, 2025, 5:45 PM UTC

PartCAD can export CAD models to Three.js.

The OCP CAD viewer extension for build123d and cadquery models, for example, is also built on Three.js. https://github.com/bernhard-42/vscode-ocp-cad-viewer

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#9

Post by jasonthorsness » Wed, Jun 11, 2025, 5:48 PM UTC

The food scans demo ("Interactivity" examples section) is incredible. Especially Mel's Steak Sandwich looking into the holes in the bread.

The performance seems amazingly good for the apparent level of detail, even on my integrated graphics laptop. Where is this technique most commonly used today?

Re: Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

#10

Post by dmarcos » Wed, Jun 11, 2025, 5:52 PM UTC

jasonthorsness wrote: post #9

The food scans demo ("Interactivity" examples section) is incredible. Especially Mel's Steak Sandwich looking into the holes in the bread. The performance seems amazingly good for the apparent level of detail, even on my integrated graphics laptop. Where is this technique most commonly used today?

There's a community of people passionate about scanning all short stuff with handheld devices, drones... Tipatat let us generously use his food scans for the demo. I also enjoy kotohibi flower scans: https://superspl.at/user?id=kotohibi

Edit: typos