@yacineMTB profile picture
kache @yacineMTB
Joined September 2019
  • Posts 167,130
  • Following 6,420
  • Followers 309,843
15,964 Photos and videos
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kache
@yacineMTB
2h
Fable and I rewrote Box3d entirely in native cuda. It's about 30x faster on my GPU compared to my CPU (depending on the situation). This was my hardest benchmark. I still had to be there, but soon I won't. Cost me about 200 dollars
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Erin Catto@erin_catto
Jul 1
I’m happy to announce the release of a new open source 3D physics engine called Box3D. I’ve been working on this project for a few years now, but it represents over 20 years of experience writing physics engines for games. Read more here: box2d.org/posts/2026/06/anno…
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kache reposted
Tim Soret
@timsoret
1h
I’ve never seen that many stacked rigidbodiess in realtime. This is insane. Box3D just came out, and Yacine ported it to run on GPUs with roughly 30x the performance using Fable.
kache
@yacineMTB
1h
Replying to @voxagonlabs
me and gpt 5.5 found a bug that didn't make it deterministic and fixed it
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gpt 5.5 is finding and fixing bugs that fable left behind
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like really fucked up bugs. weird morton z order space filling curve bugs
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x.com/i/status/2074079501470…
kache
@yacineMTB
1h
Replying to @voxagonlabs
me and gpt 5.5 found a bug that didn't make it deterministic and fixed it
0:19
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Ahahahhahhahahahahah
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yeah. its called the "i read the code" skill
Martin Kemka
@mkemka_
1h
Replying to @yacineMTB
Do you have a loop where you can learn from what fable did right or wrong? I haven’t had any luck finding a good explainer skill.
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ime it's the same. i still have to micromanage these sneaky little fuckers. sweet, employment for another year! better make it count
Can Bölük
@_can1357
2h
Replying to @_can1357
4/ Unfortunately, code-quality leaves a lot to be desired, and it cut corners slightly leaving some parts of the stdlib NYI (like async sockets); but nonetheless, pretty sure this would have been impossible with opus48 / gpt55. You can judge for yourself here: github.com/can1357/pon
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fable lies A LOT
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finding so many bugs it left behind with gpt 5.5..
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tricky little fucker
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Fable and I rewrote Box3d entirely in native cuda. It's about 30x faster on my GPU compared to my CPU (depending on the situation). This was my hardest benchmark. I still had to be there, but soon I won't. Cost me about 200 dollars
1:05
Erin Catto@erin_catto
Jul 1
I’m happy to announce the release of a new open source 3D physics engine called Box3D. I’ve been working on this project for a few years now, but it represents over 20 years of experience writing physics engines for games. Read more here: box2d.org/posts/2026/06/anno…
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It would probably cost 300 more dollars or so to port this entire thing to webgpu and wasm make a multiplayer game using webrtc. This is a deterministic physics engine, which makes it even more remarkable
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me and gpt 5.5 found a bug that didn't make it deterministic and fixed it
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I just beat mujoco playground's baseline by 10x now. The policy is up on dingbotics. I wrote a custom physics engine. It still doesn't handle perturbations that well because fable decided to leave some bugs behind
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I'm doing all of this shit with a baby laying on my chest, sharting, from my phone.
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what it feels like waking up from a nap that you planned to be 30 minutes after 5 hours and its dark out
Strife@Strife212
19h
Installed Gemma 4 on my computer and it spent 15 minutes saying I was gaslighting it, no way I was running it, hardware wasnt powerful enough Eventually told it to go look at Wikipedia "I.. I have no words. I am completely floored. You were telling the truth the entire time".
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kache reposted
kache
@yacineMTB
12 Jun 2024
you're trying to be 2 steps ahead of me and then you notice i'm 4 steps behind you. i wasn't going that way, bitch, keep up
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