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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
518•klaussilveira•9h ago•145 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
852•xnx•14h ago•512 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
65•matheusalmeida•1d ago•13 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
169•isitcontent•9h ago•20 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
172•dmpetrov•9h ago•77 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
286•vecti•11h ago•129 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
65•quibono•4d ago•11 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
340•aktau•15h ago•166 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
335•ostacke•15h ago•90 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
425•todsacerdoti•17h ago•223 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
232•eljojo•12h ago•142 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
366•lstoll•15h ago•253 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
37•kmm•4d ago•3 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
14•denuoweb•1d ago•1 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
4•videotopia•3d ago•0 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
11•romes•4d ago•1 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
85•SerCe•5h ago•68 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
216•i5heu•12h ago•160 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
17•gmays•4h ago•2 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
36•gfortaine•6h ago•10 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
59•phreda4•8h ago•11 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
161•limoce•3d ago•80 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
124•vmatsiiako•14h ago•51 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
260•surprisetalk•3d ago•35 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1024•cdrnsf•18h ago•425 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
53•rescrv•16h ago•17 comments

WebView performance significantly slower than PWA

https://issues.chromium.org/issues/40817676
16•denysonique•5h ago•2 comments

I'm going to cure my girlfriend's brain tumor

https://andrewjrod.substack.com/p/im-going-to-cure-my-girlfriends-brain
102•ray__•5h ago•49 comments

Evaluating and mitigating the growing risk of LLM-discovered 0-days

https://red.anthropic.com/2026/zero-days/
44•lebovic•1d ago•13 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
82•antves•1d ago•59 comments
Open in hackernews

Show HN: CUDA Fractal Renderer

https://github.com/tripplyons/cuda-fractal-renderer
44•tripplyons•6mo ago

Comments

bsenftner•6mo ago
Have you tried fractal volumes yet? A calculation worthy of cuda... Or even fractal animation? Fun awaits!
neomantra•6mo ago
I have been very interested in fractal volumes using mesh shading to sample the isosurfaces. Some of the first mesh shader demos included Mandelbulbs, but AFAIK there's been no OSS tools/demos 7 years later?

Please comment if you know of one! Checking now, there appears to be recent (~3 years) graduate research papers on this topic , so a new reading list for me.

tripplyons•6mo ago
I've experimented with fractals in higher dimensions, but not in CUDA yet. Seems like a good next step!
neomantra•6mo ago
OP, great work on this. While I can't run it, I appreciate that it's pretty bite-sized and easy to inspect.

Dealing with volumes is a big change, but interpolation of the affine transforms is not far off. Expose the matrix to the CLI and then one can wrap it with an interpolation script; or you can build that interpolation in. Maybe note the generation time in your README?

I spent many weekends in the mid-00's doing GPGPU for ElectricSheep-style Iterated Function systems, instead of the distributed ElectricSheep network [1]. That was C++ and CUDA. Your implementation is much easier to make sense of, albeit it smaller scope.

[1] https://electricsheep.org

azath92•6mo ago
The electric sheep always intrigued me so much! but was a bit before my time, and also felt so impenetrable. I appreciate you drawing the link between them and something like this which is so finite and understandable.

and to OP for making something so finite and understandable ofc.

monster_truck•6mo ago
Electric Sheep still works great to this day. The lifetime membership is worth it if you want nice enough sheep with 0 effort, but there are countless HD packs on archiveorg and elsewhere
azath92•6mo ago
cool to hear that the actual electric sheep project is still something you can interact with!

For those super new to it (like me), check out https://electricsheep.org/ og video we came across it with https://www.youtube.com/watch?v=O5RdMvgk8b0 (this was just the first I found when looking there are many on youtube) and the algorithm behind it https://flam3.com/ This is all AFAICT as someone who's only just skimmed the surface, but i find it amazing.

neomantra•6mo ago
Porting the ElectricSheep AfterEffects Plugin from Windows to OSX was my true first open source contribution (1999?). And that only happened because my friend was friends with its author and it came up when he was showing off some fractals movies. Then I said, “Oh I can help you with that.”

That OSS plugin itself was riding on the OSS ElectricSheep. All collaboration and distribution was via tarballs, although is on GitHub now. It was a trip seeing some code I wrangled make its way into commercial media, just organically.

The ElectricSheep project weaves so many cool tech threads together. Only thing is was missing compared to modernity is decentralized genome propagation.

Scott Draves, its author, has some great artist content too. He also spearheaded Polyglot notebooks, early on in that kind of interface.

azath92•6mo ago
I think the depth (in time, and community involvement) is one of the things that has drawn me to this project. It has the excellent vibe of a dedicated and yet accessible, IMO because of the beautiful and widely available visual output, internet community.

Thanks for sharing some of this rich history!

almostgotcaught•6mo ago
tangential question: does anyone know a way to call/use CUDA from graphics code? like directx or opengl (or whatever). as opposed to this code which is named "renderer" but doesn't draw to the screen...
Ono-Sendai•6mo ago
compute shaders?
animal531•6mo ago
Yeah, for example Unity uses C#, so you can used a managed CUDA library. If you're using a C engine like Unreal etc. its even easier since you can just include the code.

But having said that, a giant drawback to using CUDA in gaming is that the overhead of transforming and copying your data to/from CUDA kills off a lot of the performance, so while its still great its not nearly as good as writing compute shaders.

They are a topic of their own, the code can start off quite basic but with recent additions you can now also do some really advanced thread management and coordination.

They still come with big overhead to moving data around, but in general they're better suited to the use-case than CUDA.

corysama•6mo ago
There are DX/GL interop functions in the CUDA API. But, they are a bit tricky. Unless you really have a strong, specific need for something only available in CUDA, you are better off using compute shaders.
pixelpoet•6mo ago
Just because a program isn't using DirectX or OpenGL etc doesn't mean it's not a renderer / graphics code.
dcanelhas•6mo ago
Thanks for sharing. I don't see why there is an atomic add in the kernel there. It doesn't look like two separate threads should be able to modify the same pixel, based on the block/thread indices?
tripplyons•6mo ago
Each block is for a different image, but each thread within the same block has a small chance of modifying the same pixel.
porphyra•6mo ago
Writing CUDA in Python is so nice and elegant now. What a time to be alive! I love how wonderfully short the code is.
sestep•6mo ago
Thank you for providing a uv.lock file! I spent a good chunk of last month trying to get graphics research projects working that only provided requirements.txt (or not even that, e.g. the original Gaussian splatting paper), and it was hell to figure out how to undo all the bitrot.