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Raph Levien
Doing fundamental research in UI and 2D graphics









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Just like last year, we replaced a whole wall of movie posters with our own punny movie posters at the cinema where RustWeek 2026 took place. I designed seven new posters for this year's event. See the thread below 👇
My "No Graphics API" blog post is live! Please repost :) www.sebastianaaltonen.com/blog/no-grap... I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
As we go into the holiday season, there's lots of progress in Linebender from the previous month: linebender.org/blog/tmil-23/. Among other things, blur filters in Vello CPU (with GPU acceleration on the roadmap), SIMD progress, and a new port of Runebender to Xilem.
Our upcoming game The Hearth and Harbour is fully 2D, but with some neat tricks we’ve made it look 3D. Ethan, our environment artist, did this with a special type of texture called a Normal Map. (Thread! 1/7)
As a fun project, I implemented race-the-beam image decompression on RP2350 with DVI output. I can get 1280x720 at 60Hz with a bit of overclocking. PR at github.com/DusterTheFir... I'll probably write this up, the idea is pretty cool.
I will be at RustWeek in Utrecht next week! Really looking forward to meeting people.
“We adopted #rustlang for its security and are seeing a 1000x reduction in memory safety vulnerability density ... with Rust changes having a 4x lower rollback rate and spending 25% less time in code review, the safer path is now also the faster one.” security.googleblog.com/2025/11/rust...
This is indeed an excellent talk, and I think contains the seeds of a path forward through the AI thicket. When tested against only "vibes," AI can generate reams of slop. But when tested against hard ground truth, in this case rigorous mathematical formalism, possibilities abound.
😎😎😎😎 GOOD THINGS CAN STILL HAPPEN 😎😎😎😎
My talk on "I want a good parallel language" is now up: www.youtube.com/watch?v=0-eV... Slides here: docs.google.com/presentation... Thanks Arthur Gleckler and BALISP for hosting the talk!