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Ah, all the artifacts were fixed by replacing one '<' with '<=', duh. It all works now, particle life completely on WebGPU! There are 2^18 (~260k) particles here; my PC struggles after about half a million particles. Will probably try to optimize it a bit later.

Nikita Lisitsa

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131,435 次观看 • 1 年前 •via X (Twitter)

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Tailcalled (@tailcalled.bsky.social) 的头像

Tailcalled (@tailcalled.bsky.social)1 年前

I always feel like this sort of thing is more accurately called "artificial chemistry" than "artificial life", since it's lacking genetics and metabolism. Unfortunately seems too computationally intractable to have a chemically reductive life simulation.

Nikita Lisitsa 的头像

Nikita Lisitsa1 年前

Well, it's not me who coined the name "particle life" for it! Not sure about "artificial chemistry" either - the model lacks any chemical reactions. Anyway, it's more of a toy rather than serious research, and it does look "life-like", so I'm happy with calling it that!

RedDeer.Games 的头像

RedDeer.Games1 年前

We can't spill the beans about the release date of Maki: Paw of Fury, but make no mistake, things are happening! 🫘😎 We remind you that the game is coming to #NintendoSwitch and #PC #Steam and you can play the demo on PC, here ⤵️ >>> Have a great day!

Federico Marino 的头像

Federico Marino1 年前

very interesting. I wonder how you handle particle interactions. Do you use some acceleration structure like KD Trees to check neighbour particles?

Nikita Lisitsa 的头像

Nikita Lisitsa1 年前

I used a k-d tree in my CPU implementation, but it's hard to port to GPU. Here I'm using spatial binning (put particles in a grid, only traverse neighbouring cells for interactions)

kache 的头像

kache1 年前

thanks for sharing, this is awesome cc @benrayfield

Luca 的头像

Luca1 年前

you planning something with this or is this good ol'fashion recreational programming (which i fully endorse ofc)

Nikita Lisitsa 的头像

Nikita Lisitsa1 年前

Recreational mostly, yep! Hope to optimize it a bit and maybe make a 3D version, but we'll see...

Shalin Shodhan 的头像

Shalin Shodhan1 年前

That reminds me of the cell stage in Spore

Elliott 的头像

Elliott1 年前

That’s so mesmerizing…are you sharing the code anywhere?

Nikita Lisitsa 的头像

Nikita Lisitsa1 年前

Sure:

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