Show HN: I vibe-coded a custom WebGPU engine for my MMO(github.com)
github.com
Show HN: I vibe-coded a custom WebGPU engine for my MMO
https://github.com/verekia/voidcore
2 comments
Nice! WebGPU is wild technology - I've seen some mindblowing demos at SIGGRAPH a couple of years back. Still haven't had the chance to play around myself. Nice to know that Opus 4.6 has it covered.
When you vibe-code, what is the license on the code produced by the AI? What is the license on the code used to train it and does that license carry over?
I was not expecting to be able to reach that point so easily, but pretty much every feature took somewhere between 30 minutes and 1 hour - 1 to 3 prompts on average. It is vibe-coded in the sense that I haven't looked at the code, but I am very careful with my prompts and constantly have Claude reviewing the codebase, looking for performance and code quality improvements.
It can reach 2000 draw calls on recent integrated GPUs, such as modern phones or MacBooks, where Three.js usually starts dropping frames at 300-600 draw calls. I love Three.js, but I wanted to build something more minimal that does exactly what I need with better performance.
I started with a C/WASM core but ended up sticking with JS because the performance difference wasn't significant enough for the number of entities in my game (never more than 500 entities).
All in all, it was a fascinating experience, and I learned a lot about engines, even without typing a single line of code. It's pretty wild that we can now quite easily build in-house engines alongside our games as solo developers.