Reinder Nijhoff

Happy 303 Day by srtuss - ~430 lines of code

Not sure what it is, but it is....
My new Portfolio! (best on desktop/laptop)
neuroproductions.be

Every single senior engineer that I have talked to in the last two weeks has had what I would call "existential melancholy." Our all-company meeting last Monday had the phrases "staring down the barrel of the end of our careers" and "preparing for the threat of rogue AI" spoken in total seriousness.

Here are some techniques I discovered through 14 years of shader programming:

OneShader The online shader editor. Create and share real-time procedural art with just one WebGL shader. Joy is in the craft.

Beautiful!

I just added twigl support to oneshader.net! :)
And I’m really eager to keep improving the platform, so if you want to test it out and share some feedback, I’d love to hear your thoughts.

The RenderQueue - Sportswear IBL combined with pre-baked shadow and ao maps

New (old) prototype online renderqueue.dev/sportswear-c...

Hi! Thanks for the feedback, and yes: I understand. I probably won't change the canvas size for historical reasons, but I could add an option to crop/resize to a non-square aspect ratio on export. Not sure if that helps?

WebGPU SDF Editor: Real-Time Signed Distance Field Modeling - reindernijhoff.net This is a guest post on my website. It is written by Johan Holwerda about the SDF editor he built for the RenderQueue. I’ve been working on a WebGPU-based SDF editor for modeling using signed distance...

You can find a blog post with technical details about this demo here: reindernijhoff.net/2026/01/webg...

The RenderQueue - SDF editor Point renderer for hard surfaces

@johanholwerda.bsky.social pushed a WebGPU real-time SDF-editor to the RenderQueue: renderqueue.dev/sdf-editor

Hexagon Truchet My first Truchet tiles experiment. #truchet #hexagon

Hexagon Truchet by reinder.
https://turtletoy.net/turtle/e5df5b10e0

#turtletoy

Turtletoy https://turtletoy.net/ (http://news.ycombinator.com/item?id=46138459)

Thanks!

Hi @iquilezles.bsky.social , when I try to use the API, I always get an error message. Is this something Pol and you are aware of, and are going to fix? Is there something I can help with?

Eigen: Building a Workspace - reindernijhoff.net Last spring I started wondering: how hard would it be to build my own Google Workspace? Given the situation in the USA and the power large tech companies hold, a European alternative feels needed. Of ...

See reindernijhoff.net/2025/10/eige...

eigen.is !

Oxygene4.js | Dittytoy The song that inspired every electronic musician.

hi @mmalex.bsky.social , have you ever taken a look at Dittytoy dittytoy.net/ditty/243733... ?

Yes, I think the API doesn’t work with the cloudflare protection in place. This is something @iquilezles.bsky.social should have a look at.

been a couple years since I wrote a dumb pathtracer-in-a-shader; felt that itch again and decided to brush off the cobwebs by 'covering'/'blatantly ripping off' noby's brilliant 10yo 4k www.youtube.com/watch?v=9r8p...

Techno beat 1 | Dittytoy Using a shared filter for compression. Slightly different with each playback.

Then you also might like this: dittytoy.net/ditty/b3585f... @dittytoy.net

Post-it Mania 🟨 An implementation to resemble a concept I saw in a piece by u/KennyVaden at https://www.reddit.com/r/generative/comments/146sxqo/disruptor_r_code/ https://turtletoy.net/turtle/80f5254064#shapes=4,layers=7,distributionBySize=1,postitsPerLayer=500,directionVariation=60,sizeVariation=150,border=3,sizeRandomness=2.1,onlyOutLines=0 "Post-it" is a registered trademark owned by 3M

Post-it Mania 🟨 by Jurgen.
https://turtletoy.net/turtle/80f5254064

#turtletoy

Slides from my SIGGRAPH 2025 and CEDEC 2025 talks “Fast as Hell: idTech 8 Global Illumination”, are now publicly available through the Advances in Real-Time Rendering in Games course. Lecture recordings will be available soon on the course's YouTube channel.

Ohjee, moet ik me nu in screenrecorders gaan verdiepen... :(

Gelukkig is het op dittytoy.net zelf gewoon met geluid!

I added an ascii-art based audio visualizer to @dittytoy.net

dittytoy.net/ditty/243733...

Coding Adventure: Ray-Traced Glass and Caustics YouTube video by Sebastian Lague

My latest coding adventure is now up on YT -- some experiments with ray-tracing glass and water, and the cool caustics they can cause
youtu.be/wA1KVZ1eOuA?...

mund4ne melodic flows of variable tone and loudness

mund4ne by nabr.
https://dittytoy.net/ditty/1f740cf4e3

#dittytoy

Modal synth Modal synthesizer, using 8 bandpass filters

Modal synth by skythedragon.
https://dittytoy.net/ditty/ff9c5b6bc3

#dittytoy

The sound of connecting to the Internet before the 2000s.

Marching Events: What does iCalendar have to do with ray marching?

yo, i think i've accidentally discovered something new - pwy.io/posts/marchi...

one-liner brick torus revisited my 1st turtle... here made out of one single path (just pen up/down for hidden lines) (and its only brick if "nth" is uneven)

one-liner brick torus by flockaroo.
https://turtletoy.net/turtle/e1abd44258

#turtletoy

Plottable Multi-Scale Truchet I changed https://turtletoy.net/turtle/fa14c628d4 (by @jurgen) a bit, so it only draws the edges.

Plottable Multi-Scale Truchet by reinder.
https://turtletoy.net/turtle/9a79d5c213

#turtletoy