Colin Cornaby

Colin Cornaby

@colincornaby.me

https://www.colincornaby.me I'm a programmer in Portland, OR doing graphics rendering and performance on Mac, iOS and visionOS.

224 followers166 following48 posts

Colin Cornaby
@colincornaby.me

Wrote up some thoughts on the role of LLM contributions in open-source projects.

colincornaby.meOpen source is social – and LLM generated PRs are antisocialRecently there's been a lot of debate on the role of LLMs in open source software. Let's try a thought experiment. If the value of code is now zero - what's the value of a pull request to an open source project? (I realize I've immediately touched on a contentious debate - but stick with me for the sake of argument.)
Colin Cornaby
@colincornaby.me

Wrote up some thoughts about Mythos, why I think it's actually not publicly available, and what it says about LLM scaling

colincornaby.meAnthropic’s Mythos implies LLM scaling has hit a wallThere's a series of articles that have been written casting doubt on Anthropic's claims of Mythos as some leap in cybersecurity. Tom's Hardware wrote up a good summary. I've seen other industry write ups like this one that also cast doubt on Mytho's prowess. When I read about Mythos one thing stood out to me: It didn't matter if the modal was aligned or safe.
Colin Cornaby
@colincornaby.me

Inspired by a blog post on how we don't need to check LLM outputs anymore - I wrote a bit on how I worked with Claude to successfully produce code that can be maintained by cats.

colincornaby.meCode for Cats – or how your LLM is a cosplayerThe other day I read a post entitled "Opus 4.5 is going to change everything". The gist was with Claude Opus 4.5 it's no longer necessary to review code. I have a vague idea, but you are right - I do not know how the applications are actually assembled. Especially since I don’t know Swift at all. This used to be a major hangup for me.

Colin Cornaby reposted

Neven Mrgan
@mrgan.com

Nova is my second most used app—always open, always close in the cmd-tab switcher. In a sea of clunky Electron software, ugly UIs, and constant nags, it feels like a refuge.

Panic@panic.com

🎆 NOVA is ON SALE! Nova is a truly special code editor—fast, beautiful, and feature-packed. We want more coders to check it out and maybe fall in love with it. For two weeks, from September 30 until October 14, Nova is 40% OFF. Hurry! Get it at ➡️ nova.app

Colin Cornaby
@colincornaby.me

If you're building or playing games on the Mac - your game probably isn't working right out of the box on a notched display. I've written about the issue in AppKit and some options for fixing your game.

colincornaby.meYour Mac Game Is Probably Rendering BlurryProblem Solution Affected Games What Apple could do Problem I've submitted the issue described in this post to Apple as FB13375033. This issue has been open since September of 2023. If you game on a MacBook display - your game is probably rendering wrong unless you've adjusted your settings. If you're a developer building a full screen game in AppKit (or Catalyst) - Apple's APIs have some issues you need to be aware of.
Colin Cornaby
@colincornaby.me

I wrote a follow up to my "Microwaves" LLM post expanding on a few points. Expecting this to be my only follow up - I'm planning on taking a break on LLMs (and microwaves) for a bit.

colincornaby.meFollow up to “Microwaves”Gordon Ramsey - famous hater of restaurant microwaves - throwing one out a window Last weekend I wrote a thing about microwaves that was actually about LLMs. I banged it out after I got mad reading more internet nonsense about LLMs. I thought just a few people on Mastodon would read it. More people than I expected read it. It's not my best writing.
Colin Cornaby
@colincornaby.me

In the Future All Food Will Be Cooked in a Microwave, and if You Can’t Deal With That Then You Need to Get Out of the Kitchen

colincornaby.meIn the Future All Food Will Be Cooked in a Microwave, and if You Can’t Deal With That Then You Need to Get Out of the KitchenAs a restaurant owner - I'm astounded at the rate of progress since microwaves were released a few short years ago. Today's microwave can cook a frozen burrito. Tomorrow's microwave will be able to cook an entire Thanksgiving Dinner. Ten years from now a microwave may even be able to run the country. Recently I was watching a livestream of a local microwave salesman.
Colin Cornaby
@colincornaby.me

Here's my last blog post (for now) on Claude Code and AI coding. Because it's timely - I also wrote about the METR study that found developers were slowed by AI tools.

colincornaby.meFollow up on Claude Code/LLM codingIn my last post - I wrote about my experiences with agentic LLM coding - specifically Claude Code. I also wrote that I felt like the tool as slowing me down without me realizing it. This post is a follow up. I'd like to write about other things - so this post is my way of putting a pin in the subject for now.
Colin Cornaby
@colincornaby.me

I wrote about my experiences using LLMs + Claude Code. Both the good and bad. These tools can cut both ways on efficiency. But my biggest concern is I'm worried developers won't know when to put them down. One takeaway I have: devs who use LLMs should have a surface understanding of how they work.

colincornaby.meLLM coding and the Sunk Cost FallacyOn my weekends I've been going through LLM coding workflows. I've used web assistants like ChatGPT and full integrations like Claude Code.
Colin Cornaby
@colincornaby.me

I've published an experimental version of Nvidia PhysX for visionOS to my GitHub. This fork includes several other patches for building the Gameworks version of PhysX on modern Apple platforms.

colincornaby.meNvidia Gameworks PhysX for Vision Pro (and more)I've published a fork of the Gameworks PhysX to my Github that includes support for Vision Pro. I've also collected several other patches into the fork - including the patches we use for H'uru to build PhysX for other Apple platforms. This includes: Patches to fix compilation issues in modern versions of Xcode Support for Apple Silicon Macs These changes were…
Colin Cornaby
@colincornaby.me

Our old apartment building had a few units they rented to movie stars when they were in town filming. I once shared an elevator with Steve Buscemi. Another time it was John Larroquette. I didn't say anything to either. They looked happy to have some quiet time. Especially Steve Buscemi.

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Colin Cornaby
@colincornaby.me

After I saw Steve Buscemi I checked on Twitter and saw people were taking photographs of him at the Starbucks down the street. He had just been sitting and trying to enjoy his coffee. So I'm guessing it might have been a post why-can't-I-just-drink-coffee-in-peace elevator ride.

Colin Cornaby reposted

Steven Levy
@stevenlevy.bsky.social

20 years today, Steve Jobs gave Stanford grads the speech of all time. He struggled mightily to write it. Here's the inside story about how he did it. www.wired.com/story/how-st...

wired.comHow Steve Jobs Wrote the Greatest Commencement Speech EverBack in 2005, Jobs spent months trying to figure out what to say to Stanford’s graduates. Newly released materials show how he went from hopelessly flailing to delivering a talk for the ages.
Colin Cornaby
@colincornaby.me

We'll see how it translates everywhere - but I've really enjoyed using the glass like UI on Vision Pro. It's just really slick and way more polished than the iPad OS theme when running on device.

Colin Cornaby
@colincornaby.me

I'm happy Apple is moving back to more complex materials and animations in UI. For a long time they've been giving ground to cross platform frameworks with less opinionated UI. People used to pursue native frameworks for the richer experience.

Colin Cornaby
@colincornaby.me

Switch 2 is nice. I like the large screen and more comfortable controllers. The limited software selection though has me wondering if this is just a gateway device now to a handheld gaming PC. I keep looking at it like "this would be even better if I could run my PC copy of Baldurs Gate 3...."

Colin Cornaby
@colincornaby.me

Given the underwhelming specs of the Tegra chipset it still performs really well. Makes me wonder what an optimized SteamOS experience on Tegra or any other ARM chipset could look like.

Colin Cornaby
@colincornaby.me

Is it correct Xcode still doesn't support Git LFS? It's not bundled, but even if it is installed Xcode seems to ignore it. This means adding files or committing through Xcode can bypass LFS policy (!!!). Would love to be wrong though.

Colin Cornaby
@colincornaby.me

Kind of odd a new build of Fortnite hasn't been published for Mac. Especially in since they didn't even need to go through the App Store for the macOS version.

Colin Cornaby
@colincornaby.me

Stuff I'm working on in May: Spatial Audio rendering in OpenAL Soft, Nvidia PhysX for visionOS, and fixing a few remaining issues on the Metal version of Plasma. #iOSDev #GameDev

colincornaby.meMay 2025 Project UpdateI'm trying to get back into blogging and as part of that I'm going to start posting my personal projects for the month. It's something to keep me posting regularly and also a nice way to hold myself accountable for progress. I'm working on a few things right now: I made improvements in OpenAL-Soft for detecting surround speaker configurations on macOS.
Colin Cornaby
@colincornaby.me

I've been working on porting Cyan's Plasma engine - used for titles like RealMyst, Myst V, and Uru - to macOS and Metal. Recently I also ported the engine to iOS. I wrote a blog post about the process - including a taste of a Vision Pro client. #iOSDev #VisionPro #iOS #Myst

colincornaby.mePorting Cyan’s Plasma engine to iOS – and a peak at visionOSScreenshot of Uru running on a iPhone 16 Pro Max Over the past few years I've been been working on the Mac version of Cyan's Plasma engine. This engine was used for Cyan titles like RealMyst, Myst V, and Uru. I've been maintaining the port as part of the open source H'uru project. I always wanted to port to iPad as well.

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