Ball Pit

https://codepen.io/mrdoob_/full/NPRwLZd

58•memalign•1h ago

Comments

newobj•1h ago

path tracer?

newobj•1h ago

nevermind i see the ssgi/traa code. looks great!

simlevesque•1h ago

Beware: this might totally freeze your computer like it did for me.

ninju•1h ago

definitely needs a lot of computing power

amelius•1h ago

Works fine on my phone, Firefox+GrapheneOS.

ivanjermakov•9m ago

WebGPU moment (have same issue on Firefox/Linux).

p1necone•1h ago

This runs pretty smoothly on my middling laptop CPU while looking like a typical raytracing demo. I assume there's some smoke and mirrors involved?

h4ch1•52m ago

No, it's using the newish SSGI and TRAA webgpu nodes. The three team has been making great progress with SSGI and webgpu in general and i'd recommend checking it out if you're interested.

There's also a denoise node in three (not used in this example), but SSGI still looks kinda blurry.

Work though is still going on: https://github.com/mrdoob/three.js/issues/31892

Sharlin•18m ago

Jesus Christ, trying to figure out what TRAA is (presumably an anti-aliasing algorithm) and how it works and it's entirely impossible to google.

menno-dot-ai•16m ago

Temporal reprojection anti aliasing :)

https://www.threejs-blocks.com/docs/traaHD

Sharlin•12m ago

The only thing even remotely related to graphics I found was references to "TrAA" in forum posts from 2006 (yeah) where I believe they referred to NVIDIA "Transparency AA" or something like that. "TRAA", "TRAA meaning", "TRAA graphics", "TRAA 3D" all gave fully irrelevant results :D

jessepasley•1h ago

Is this marketing for the Shape Store? It's cool but I still don't know when my area is getting a Shape Store.

adzm•42m ago

I tried to be helpful and explain what the shape store was, but found myself with a lack of words. Instead here is the know your meme page: https://knowyourmeme.com/memes/the-shape-store-ai-video

tldr it is an ai video, subtle analog horror / backrooms style

Rendello•53m ago

Beautiful, this must have been an excellent learning experience to make.

I've done some very basic rendering code in C from a rendering internals course, and at the same time I'm learning about perspective from the drawing/art side. I wonder how much learning one would help the other, in a practical way.

akie•22m ago

The author is a world renowned expert in 3D graphics.

verytrivial•50m ago

For some context, I think this is by mr.doob of three.js fame.

hermitcrab•20m ago

I'm a C++ programmer and only passingly familiar with web/JS stuff. What libraries/technologies is this using, apart from Javascript and three.js?

CodeWriter23•10m ago

I was able to get all the balls stuck on the 'ceiling'. Bug or feature?

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