iiinova — where your digital self keeps evolving

Casey Primozic / ameo @ameo.dev · 21/07/2026

I've not found myself able to find the will to write a blog post in the past several months either. Very hard to compete with the superintelligence for things worth reading

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Casey Primozic / ameo @ameo.dev · 21/07/2026

I really miss when I used to get excited by new programming languages and paradigms and tooling and stuff like that. Like I used to read the Rust release eagerly and get hyped about the new language features and stdlib stuff they added Very hard to feel that kind of excitement in the LLM era

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Casey Primozic / ameo @ameo.dev · 05/05/2026

Most crisp gorgeous double rainbow I've ever seen in my life outside my apartment window just now

Photograph of a very pronounced double rainbow taken out the window of an apartment building. The horizon is flat with a few buildings in the foreground, but the rainbows themselves are fully unobstructed.

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Casey Primozic / ameo @ameo.dev · 12/01/2026

I've just had an idea for what I think will be a very powerful geometry generation primitive for Geoscript Still working through details, but if it pans out it will be really cool

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Casey Primozic / ameo @ameo.dev · 11/01/2026

Wrote a post about a neat optimization opportunity I ran into for Geotoy cprimozic.net/notes/posts/... It uses persistent constant expression memoization to skip work when re-running slightly modified programs. It's effective since Geoscript programs are basically pure functions

cprimozic.net

A Unique Performance Optimization for a 3D Geometry Language

For the past several months, I’ve been working on a programming language called Geoscript. It’s specialized for generating and manipulating 3D geometry for use in a Shadertoy-inspired web app called G...

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Casey Primozic / ameo @ameo.dev · 11/01/2026

Some of these modern vocaloid producers are out there creating just really amazing stuff www.youtube.com/watch?v=icBD... (song is Looping the Rooms by rusino) I've said this before, but it really warms my heart that Vocaloid is still popular, thriving, and evolving in 2026

youtube.com

ループザルーム feat. 初音ミク / "Looping the Rooms" ft. Hatsune Miku

YouTube video by ルシノ / rusino

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Casey Primozic / ameo @ameo.dev · 07/01/2026

Still working on my Geotoy project on and off Building up a pretty decent collection of cool stuff with it 3d.ameo.design/geotoy/edit/71 3d.ameo.design/geotoy/edit/72 3d.ameo.design/geotoy/edit/76 3d.ameo.design/geotoy/edit/66

Colorful curlicues resembling twist-ties twisted into various sorts of spirals and textured with a bright geometric chevron pattern

A voxel construct resembling a hollow hourglass sitting on a concrete mat with a folding structure around it

A concrete or stone walkway with shiny dark puple rock-like organic-looking spires surrounding it

A series of gray tendrils or pipes following an organic looking flow pattern reminiscent of fluid dynamics or smoke

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Casey Primozic / ameo @ameo.dev · 26/12/2025

Working on some TikZ diagrams for a new blog post

A diagram representing the architecture of a neural network for a recommender model. It shows an input consisting of concatenated presence flags and hybrid-normalized ratings, an encoder hidden layer, a bottleneck layer of size 512, and then two output decoder heads each of which have two hidden layers. The decoder heads are labeled "Presence Decoder" and "Ratings Decoder".

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Casey Primozic / ameo @ameo.dev · 26/10/2025

An alternate style This one took almost 8 minutes to generate though. CGAL has some pretty severe performance issues when running in Wasm. It relies on having strict control over FPU rounding mode flags, but those aren't controllable in Wasm, so expensive emulation is needed

A screenshot of a 3D model created and rendered with Geotoy. It depicts a multi-layered folded shell enclosed in a spherical area, textured and shaded with shiny gold-colored streaks across its surface. The base surface appears rather matte and rocky while the golden streaks are shiny and metallic. It consists of many separate thin layers of material that warp and curl in roughly the same way as each other, yielding an organic look reminiscent of a smooth endoplasmic reticulum.

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Casey Primozic / ameo @ameo.dev · 26/10/2025

My latest creation with Geotoy, built using the alpha wrap function from the CGAL library I've been getting a ton of value out of this; it's really useful for creating organic-looking structures You can see it in 3D here: 3d.ameo.design/geotoy/edit/62 (takes ~30 seconds to run)

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Casey Primozic / ameo @ameo.dev · 24/10/2025

I've not been writing enough blog posts in recent months, I need to get back on that.

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Casey Primozic / ameo @ameo.dev · 15/09/2025

A pedestrian bridge from the Ghost in the Shell live action movie I built in Geotoy 3d.ameo.design/geotoy/edit/54

A screenshot of a 3D model of a pedestrian bridge rendered with Geotoy. It shows a bridge with a green fence along either side and several large windows. There is a text editor with code at the bottom.

A screenshot from the Ghost in the Shell live action movie showing a pedestrian bridge. The bridge is made of metal and painted white with large windows cut into its side and a green railing. There are large highrise apartment buildings in the background.

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Casey Primozic / ameo @ameo.dev · 02/09/2025

I recorded a little video giving a tour of my Geotoy project www.youtube.com/watch?v=CtbX...

youtube.com

Geotoy Showcase + Demo

YouTube video by CaseyC104

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Casey Primozic / ameo @ameo.dev · 19/08/2025

Wrote a little post this weekend about all the tech/tools/techniques that went into my Geotoy project cprimozic.net/blog/the-tec...

cprimozic.net

The Tech Behind Geotoy

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Casey Primozic / ameo @ameo.dev · 03/08/2025

After _much_ effort, I've gotten the boundary-first-flattening library compiling to WebAssembly (geometrycollective.github.io/boundary-fir...) So now I can auto-unwrap UVs for meshes that triplanar mapping works badly for in Geotoy

A screenshot of a mesh rendered in Geotoy. It looks like a sphere with some holes drilled in it that has been split in half sideways.

The sphere is textured with a debug texture showing UV coordinates across different parts of its surface

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Casey Primozic / ameo @ameo.dev · 25/07/2025

I'm putting real effort into making the docs for geoscript/geotoy as high-quality as possible I created these little inline examples that show the code and its output directly on the docs page 3d.ameo.design/geoscript/do...

A screenshot of the docs page for geoscript showing details about the `stitch_contours` function. At the top of the docs for that function, there is an expanded example that shows some geoscript code on the left using the function and an image on the right representing the output of running that code.

Below the example, there are docs for the function including the function signature, argument names+types+default values, return type, and a description of each argument.

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Casey Primozic / ameo @ameo.dev · 25/07/2025

Re-discovered this absolute banger of a song today www.youtube.com/watch?v=ajD9... It's just so incredibly satisfying to listen to for some reason

youtube.com

t+pazolite - Heartache Debug (feat. 赤川ねね)

YouTube video by t+pazolite

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Casey Primozic / ameo @ameo.dev · 23/07/2025

It's always so hard to call something "finished" but I'm making a lot of cool stuff with this already tbh 3d.ameo.design/geotoy

A screenshot of the geotoy web app showing a scene that looks like a roof composed of interlocking shingles. the shingles are a curved shape with a shiny gray stone-like texture.

There is a code editor in the bottom left of the screen showing some syntax-highlighted code in a functional-looking programming language. It has variables like `shingle` and function calls like `fan_fill` and contains the code that defines the scene.

In the bottom right of the screen, there is some output showing basic stats about the scene and program like runtime in milliseconds, total vertices, and total face count.

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Casey Primozic / ameo @ameo.dev · 16/07/2025

TIL my webserver's ipv6 configuration has been broken since it got rebooted several weeks ago But things have still been working even for ipv6 users thanks to the "Happy Eyeballs" algorithm from RFC 8305: datatracker.ietf.org/doc/html/rfc...

datatracker.ietf.org

RFC 8305: Happy Eyeballs Version 2: Better Connectivity Using Concurrency

Many communication protocols operating over the modern Internet use hostnames. These often resolve to multiple IP addresses, each of which may have different performance and connectivity characteristi...

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Casey Primozic / ameo @ameo.dev · 29/06/2025

Sneak peak of a project I've been working on recently

Screenshot of a web app showing a 3D model of what looks something like a bird bath rendered along with a code editor with some code in a functional-looking programming language. There's a "run" button along with some stats about how long the code took to run, how many faces/vertices are in the mesh, etc.

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Casey Primozic / ameo @ameo.dev · 01/06/2025

I think it was around Covid era when I first started seeing Internet culture show up in graffiti I love it

A photograph of some graffiti featuring text written in black on a white background. The text says "bro had the texture pack on". There's various other scribbles and illegible text surrounding that writing.

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Casey Primozic / ameo @ameo.dev · 07/05/2025

Really fascinating paper with techniques for dramatically speeding up raytracing of FBM-based procedural scenes inria.hal.science/hal-05046040 Volumetric rendering is one of my favorite topics in computer graphics, and I'd love to try implementing this technique in my three.js work

inria.hal.science

Fast sphere tracing of procedural volumetric noise for very large and detailed scenes

Real‐time walk through very large and detailed scenes is a challenge for both content design, data management, and rendering, and requires LOD to handle the scale range. In the case of partly stochast...

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Casey Primozic / ameo @ameo.dev · 28/04/2025

Been getting around to some work on my browser-based DAW project again, finally getting a proper visual EQ built out I'm finally accumulating a decent amount of building blocks for these modules in the codebase rather than having to build everything from scratch each time

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Reposted by Casey Primozic / ameo

amos @fasterthanli.me · 17/03/2025

Help test rust-analyzer! Now with 100% more salsa: exciting stuff www.reddit.com/r/rust/s/Lxp...

reddit.com

From the rust community on Reddit: call for testing: rust-analyzer!

Explore this post and more from the rust community

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Casey Primozic / ameo @ameo.dev · 06/03/2025

6:00 PM sunset providing incredible amounts of energy, motivation, and feelings of well-being And daylight savings switch will make it 7PM very soon

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Casey Primozic / ameo @ameo.dev · 10/02/2025

Getting close the part of the year where days get longer the fastest! This chart shows the daily percentage change in day length over the year for some different latitudes. For me, having days get longer faster really helps get that "spring is coming!" energy going

A plot showing the daily percentage change in day length by latitude.

The higher the latitude, the more dramatic the changes are, but they all peak around February.

Image source: http://wordpress.mrreid.org/2014/10/19/rate-of-change-of-day-length-with-latitude/

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Casey Primozic / ameo @ameo.dev · 27/12/2024

I'm finally working on a new blog post: a rundown of the very cool optimizations I used to compute Advent of Code 2024 day 9 part 2 as fast as possible I'm using TikZ to create the visualizations, which creates SVGs that have a nice academic vibe to them

A diagram demonstrating how the algorithm for day 9 part 2 of advent of code operates. It shows rows of cells filled with numbers of blanks. Each row shows the state of the filesystem after one iteration of defragmenting. There are arrows drawn to indicate where files are removed from and written to.

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Casey Primozic / ameo @ameo.dev · 26/12/2024

A new one for me: Someone has created a fake Twitter account for one of my side projects. It's filled with dozens of seemingly AI-generated posts trying to make it look like it's partnering with some crypto pump-and-dump website Fascinating times we live in

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Casey Primozic / ameo @ameo.dev · 26/12/2024

I wrote up some notes about how I used constrained cubic bezier curves in the envelope generator for my browser-based synthesizer cprimozic.net/notes/posts/... They look and sound much better than the x^n function I had before, and I the math involved turned out to be very neat

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Casey Primozic / ameo @ameo.dev · 13/12/2024

I saw my excuse to pull in Z3 to solve today's advent of code (day 13) and I took it It was a bit like using a hydraulic press to crush an empty soda can, but I never pass up an opportunity to use Z3 #AdventOfCode

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Casey Primozic / ameo @ameo.dev · 13/12/2024

Some person or organization has been aggressively scraping data from Spotify through an API of one of my web apps I blocked their IP, and two days later they started it back up but some kind of proxy service that sends the requests from hundreds of unique residential IPs - lol

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Casey Primozic / ameo @ameo.dev · 01/12/2024

There is an absolutely gorgeous sunset here in Seattle tonight

A photograph of a vivid sunset looking out on downtown Seattle from a rooftop in Capitol Hill

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Casey Primozic / ameo @ameo.dev · 30/11/2024

Having used all three, here's how I'd rank the main public clouds (considering ease of use, features, pricing, etc.): 1. GCP 2. AWS 3. Azure Honorable Mention: Cloudflare. It's prob. my favorite, but it doesn't have everything that a "fully fledged" public cloud would have

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Casey Primozic / ameo @ameo.dev · 27/11/2024

It's so nice being able to click posts in this app and not have the top replies all be crowded out by people who paid money to show up on top

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Casey Primozic / ameo @ameo.dev · 24/11/2024

I'm moving away from using ORMs to interact with databases in my projects As soon as you try to do anything even slightly complicated or outside of the most common patterns, you're stuck fighting against it and the ORM becomes an active detriment rather than a convenience

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Reposted by Casey Primozic / ameo

osu! @osu.ppy.sh · 15/11/2024

test

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Casey Primozic / ameo @ameo.dev · 14/11/2024

I wrote up some notes about self-hosting a Bluesky PDS on a server and domain that are used to host other services: cprimozic.net/notes/posts/... I worked through all the issues and am now posting this from my 100% self-hosted PDS and custom top-level domain handle! #atproto #pds #pdsadmin

cprimozic.net

Notes on Self Hosting a Bluesky PDS Alongside Other Services

I’ve recently set up a Bluesky Personal Data Server (PDS) to store the data for my Bluesky account. I wanted to host it on my server alongside the many other web apps, databases, and many other servic...

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Casey Primozic / ameo @ameo.dev · 12/11/2024

My most recent blog post was about how I found and fixed a bug in Google Chrome/Chromium and got the fix merged: cprimozic.net/blog/fixing-... If you're reading this in a Chromium-based browser now, chances are now that code is included in your browser now!

cprimozic.net

Fixing a Bug in Google Chrome as a First-Time Contributor

A rundown of my experience finding and fixing a bug in the Chromium/Google Chrome browser - specifically in the devtools. It includes details about the bug itself as well as notes about what it was l...

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Casey Primozic / ameo @ameo.dev · 12/11/2024

I've done a good bit of work with embeddings + data viz in the past I created Music Galaxy, a 3D interactive embedding viz of musical artist relationships on Spotify: galaxy.spotifytrack.net One of my favorite projects and arguably the most "beautiful" thing I've ever made, if I do say so myself

galaxy.spotifytrack.net

Music Galaxy

Fly around a 3D galaxy of music, listening to new songs and exploring relationships between artists to discover new musicians and styles

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Casey Primozic / ameo @ameo.dev · 12/11/2024

I'm going to post some of my projects and writings to give an idea of the kind of stuff I do Starting out with my browser-based synthesizer and DAW: synth.ameo.dev Rust + Wasm Powered custom-built FM/Wavetable synth, dozens of modules + effects, MIDI editor, modulation, Faust, and much more

synth.ameo.dev

Web Synth

Web-based audio synthesis, music production, and sound experimentation platform. Built using modern web tech (Rust, WebAssembly, Web Audio, and more)

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Casey Primozic / ameo @ameo.dev · 12/11/2024

Hi - I'm Casey / ameo, previously found on Twitter @ameobea10 I write code and build software for a living and as a passion. Some interests are 3D graphics, Rust, WebAssembly, and building high-performance apps in the browser I post about my projects and write blog posts here: cprimozic.net/blog/

cprimozic.net

Blog

The personal technical blog of Casey Primozic

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Casey Primozic / ameo @ameo.dev · 12/11/2024

Testing my first post from self-hosted PDS!!

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