Hacker News: slimbuck

New comment by slimbuck in "Building the Grace Cathedral experience"

slimbuck — Sun, 26 Jul 2026 22:26:21 +0000

The two challenges with something like this are:

1. Capturing the entire scene with photos or video and converting ("training") these into a 3d Gaussian splat. This is what Vincent did so well with Grace. Open source tools for training are Brush and Lichtfeld Studio.

2. Creating a user experience with the resulting capture. In the case of Grace it involved adding the peek effect, camera controls, moving cars etc. This was all done using PlayCanvas as the article describes, which is also open source.

There is still some art to doing 1 well, but with a capable LLM agent and our (PlayCanvas') awesome community on Discord, you could probably manage both.

New comment by slimbuck in "Show HN: Immersive Gaussian Splat tour of grace cathedral, San Francisco"

slimbuck — Tue, 21 Jul 2026 10:45:24 +0000

(And if that doesn't work for you, please let me know!)

New comment by slimbuck in "Show HN: Immersive Gaussian Splat tour of grace cathedral, San Francisco"

slimbuck — Tue, 21 Jul 2026 10:18:03 +0000

Hello, I'm wondering whatever you mean? You can absolutely walk around the church indoors on mobile. Just tap to walk.

New comment by slimbuck in "Show HN: Gaussian Splat of a Strawberry"

slimbuck — Tue, 19 May 2026 12:21:14 +0000

If you can, please check any output/errors on the developer console?

New comment by slimbuck in "3D Gaussian Splatting in a Weekend"

slimbuck — Sun, 17 May 2026 07:15:30 +0000

We (playcanvas) use k-means clustering to generate a 64k entry palette of coefficients in our SOG compressed GS format.

The data savings are huge, but the compression step is slow and requires a GPU.

It would be awesome if we could find a better/faster method of compressing these 45 dimensional monsters.

Show HN: Playcanvas and Gracia 4dgs

slimbuck — Thu, 02 Apr 2026 11:46:13 +0000

I did a double take when I first saw this.

Comments URL: https://news.ycombinator.com/item?id=47613136

Points: 2

# Comments: 0

Show HN: SVO Voxelization for Gaussian Splat Collisions

slimbuck — Wed, 18 Feb 2026 20:19:33 +0000

Article URL: https://old.reddit.com/r/GaussianSplatting/comments/1r85wsx/svo_voxelization_for_gaussian_splat_collisions/

Comments URL: https://news.ycombinator.com/item?id=47065832

Points: 5

# Comments: 0

New comment by slimbuck in "Macro Splats 2025"

slimbuck — Sun, 12 Oct 2025 18:15:11 +0000

Right, thanks for confirming. It seems firefox related. We'll get this patched asap!

New comment by slimbuck in "Macro Splats 2025"

slimbuck — Sun, 12 Oct 2025 16:49:44 +0000

Hello, playcanvas developer here. May I ask what phone/device you're on? Might be a bug. (No pun intended).

Show HN: WebGPU FTW with Splat-Transform

slimbuck — Fri, 26 Sep 2025 14:50:07 +0000

It's annoying having so many ML and GS training tools rely exclusively on cuda/nvidia .

So for our open-source command-line gaussian splat converter/compressor, we decided to try WebGPU instead.

It's working well so far and a single codebase runs on Linux, MacOS and Windows without too much fuss. This is mostly thanks to Google's dawn project <3.

Eventually some of this could also run directly in the browser.

Comments URL: https://news.ycombinator.com/item?id=45387174

Points: 5

# Comments: 0

New comment by slimbuck in "15 Years of Shader Minification"

slimbuck — Tue, 13 May 2025 07:33:27 +0000

Have you tested the shader's runtime performance penalty after minification?

Also wondering how you handle named uniforms?

New comment by slimbuck in "OpenVertebrate Presents a Database of 13,000 3D Scans of Specimens"

slimbuck — Sat, 05 Apr 2025 11:38:59 +0000

Some of these would be better converted to 3dgs.

New comment by slimbuck in "Show HN: SuperSplat – open-source 3D Gaussian Splat Editor"

slimbuck — Fri, 08 Nov 2024 08:45:45 +0000

This app was made in the PlayCanvas editor. The models were imported and a custom GLSL shader written to handle the particle animations.

New comment by slimbuck in "Show HN: SuperSplat – open-source 3D Gaussian Splat Editor"

slimbuck — Wed, 06 Nov 2024 14:49:46 +0000

I'm not really sure what you mean. Think of SuperSplat as the photoshop of gaussian splats?

- SuperSplat dev :)

New comment by slimbuck in "The best darn grid shader yet (2023)"

slimbuck — Sun, 20 Oct 2024 16:09:37 +0000

I love this article! I used it as a basis for the multi-level grid in SuperSplat (https://playcanvas.com/supersplat/editor).

New comment by slimbuck in "Compressing Gaussian Splats"

slimbuck — Wed, 06 Dec 2023 18:10:14 +0000

^^ https://playcanvas.com/model-viewer?load=https://code.playca...

New comment by slimbuck in "Compressing Gaussian Splats"

slimbuck — Wed, 06 Dec 2023 18:08:45 +0000

Yes Dreams is actually a huge inspiration with the realtime rendering side of gaussian splatting. Specifically this presentation by Alex Evans https://www.mediamolecule.com/blog/article/siggraph_2015.

Dreams doesn't use gaussian splats as such, but we still learn a lot about how to compress and render a huge number of particles efficiently. (We're not doing half of this on PlayCanvas... yet).

New comment by slimbuck in "Compressing Gaussian Splats"

slimbuck — Wed, 06 Dec 2023 18:02:28 +0000

Did you see that we credit Aras at the end of the post and link to his website?

New comment by slimbuck in "Compressing Gaussian Splats"

slimbuck — Wed, 06 Dec 2023 14:26:43 +0000

Splats change color based on direction, but opacity is constant.

New comment by slimbuck in "Compressing Gaussian Splats"

slimbuck — Wed, 06 Dec 2023 13:25:50 +0000

Yes! We are using this clustering approach for position and scale data.