Liam Don

I've been heads down with the team building Sparks. Our attempt at helping kids on their reading journey.

It's working now! Setting the frame count was the key. On my end we needed that to be at least 2 in order to capture the WebGL render. Also, I don't think you need to custom compile WebKit for this - Safari Technology Preview should work as well. Assuming you have the latest version of Safari Tech Preview, here is my bash script to launch it and capture frames with just a keypress: gist.github.com/liamdon/730ccb…

@liamdon @slimbuck7 Also this

WebGL Debugging MEGA thread 🔥 Ever since i started WebGL development 10y+ ago I wanted accurate timings of GPU. This was never possible on Mac until now. Turns out you can use Metal Debugger to get detailed peek into everyting under the hood. Read along to find out how.

@marcinignac @slimbuck7 Do you mean a WebGL context and a WebGPU context, each on a different canvas? I'm trying this, but only seeing the WebGPU render captured, and I don't believe the two contexts can share a canvas. Should it work as long as both are rendering in the same RAF callback?

The starting point is this guide how to recompile WebKit for WebGPU debugging by @slimbuck7 x.com/slimbuck7/stat… The trick is to have WebGL context on the same page as WebGPU (just clearing bg rect) synced on the same RAF. Capturing Metal trace will contain data for both!

Was a 30m ARR biz in 2021/22, but several times higher now! Still mostly domestic revenue, but usage is ~40% international so other geos are catching up. I definitely agree with your overall point though. If I were a young founder trying to scale fast, I would choose… literally anything else lol. But no regrets, it’s been a ton of fun figuring this out over the last decade+ 🙂

yea the time to successful outcome is super long, but even then, it's a 30m ARR biz with the most of their revenues coming from the domestic market. i don't think it should count as generational outcome with global impact. going truly international will be challenging, their value prop wouldn't work in many countries i don't want to discount their amazing work. their success is just incredible, and i wish i could say i built something like that. just observing that it's way way harder than other verticals, and if the ambition of a founder is to build a global biz, edtech is probably not the way to go (things might be changing with AI tho)

been there done that. this shit is brutally hard. if you want to build a generational company, edtech is the hardest possible difficulty level giansegato.com/essays/why-edt… kudos to this team for realizing this early and pulling the plug. it takes lots of guts

@deedydas Geoff Ralston - President Y Combinator

Paul Graham—Founder Y Combinator Ryan Roslansky—CEO LinkedIn Ali Diab—Founder Collective Health Greg Cohn—CEO Burner Prabhakar Raghavan—Head of Google Search, Geo, Assistant, Ads, Commerce, Payments, more Edo Liberty—Founder Pinecone Ram Sriharsha—CTO Pinecone 4/n

No one talks about the Yahoo mafia but they’re so cracked Jeff Weiner—CEO LinkedIn Gideon Yu—CFO Facebook, YouTube Stewart Butterfield—Founder Slack Tim Tully—CTO Splunk Partner Menlo Amjad Masad—Founder Replit Jess Lee—Partner Sequoia Brian Acton, Jan Koum—Founder WhatsApp 1/3

The proof is in the data! Dojo Islands is more fun to play than Roblox, Fortnite, and Sonic 2! @ClassDojo #AAGV

@ValigurskyM @playcanvas Exciting, can’t wait! I used the new RenderPass API to implement the CAS sharpening stage of AMD FSR (based on ShaderToy versions). The results were pretty good for upscaling from a lower-rez scene pass, but needs AA on that lower-rez buffer - I think TAA could make this faster.

TAA is coming to @playcanvas next year. The initial pass set up is ready, now just the hard part of handling moving camera / animated objects :) For static camera, the result is promising!

Additionally on sky rendering: what about 3D skybox *scenes* like in Source engine: developer.valvesoftware.com/wiki/3D_Skybox Or does the mesh-based sky rendering already work this way? I can imagine setting `skyboxScene` and `skyboxSceneScale` properties. These are rendered as a layer in between Skybox and World layers.

A mesh-based sky rendering is finally coming to the core @playcanvas engine. A shadow catcher to compliment this is on the list as well. What else do you need? #gamedev

@mr_kogas_class @ClassDojo @ClassDojoEng Very cool, props to your students! 🎉 They might enjoy this timelapse of how their build came together. Timelapses aren't a public feature yet - just something we're tinkering with internally. We always love to hear ideas - feel free to share here, or DM me!

PARKOUR PARKOUR in @ClassDojo Dojo Islands! Once we realized we could create FLOATING blocks = game changer! Our DREAM SCHOOL is functional, made for and by Ss, holistic, and diverse. @ClassDojoEng - my Ss have some serious ideas for Dojo Islands! Let's collab!!!

@growing_daniel :8701

Are you a localhost:8080 or a localhost:3000 programmer

I’m not the person to start this, but I was doing a PhD in the general area ~12 years ago. Check out Dasher [1] - it’s still the fastest “single continuous touch” input method I’ve seen, and is a perfect fit for eye-tracking. This + eye-tracking + LLM prediction engine + some UI tweaks = likely faster text input than 95% of typists. [1] inference.org.uk/dasher/DasherS…

If you're interested, please reply to this thread, ideally with a link to something that proves you know about eye-tracking or related subjects, and I'll DM you.

Want to start a startup doing eye-tracking? If so I'd be interested in funding it. A friend of mine has ALS and can only move his eyes. He has an eye-controlled keyboard, but it's not very good. Can you make him a better one?

@nbt @ClassDojo @samchaudhary_ Thanks @nbt, have appreciated your support and advice all these years. It’s been a great back-to-school so far - we actually hit #4 a couple days ago!

Been 10 years since @ClassDojo’s Series A, and still amazing to see the level of usage and love from teachers, parents, and kids, especially at this time of the year. ✨ @samchaudhary_ @liamdon

@MissGteaches1st @ClassDojo Sorry to hear that 😞 If you have time, drop a quick note to our team at districts@classdojo.com and let us know the name of your district (and a contact if you have one). We can often resolve their concerns!

@ErikSombroek Hello from 2023! Thanks again for these great benchmarks. I saw that you played with Havok recently, do you have a sense for how it compares with the above?

@liamdon see here the results.

For completeness also 2 non wasm physic engines. Cannon + OIMO. Also see thread for a quick file size comparison. #webgl #oimo #Physics

@Daniel86Cycles @TheGrainiac @quantian1 In 1930 only households earning over $5,000 gross had to file a tax return. Fewer than 5% of Americans filed a tax return in 1930, and this is was the average reported income of that top ~5%.

@TheGrainiac @quantian1 Ok boomer.

A house, a car, and multiple kids in college was not a middle class family in the 50s, it was a top-quintile family, which we know because only about 20% of Americans aged 25-30 had a college degree in the 70’s. Now it’s roughly the median family.

@PascalMassimino @iquilezles Yep, I did the same thing! Luckily you can resubmit using the same code

@iquilezles Warning! The worksheet makes you compute G *last*, after R and B. But you have to enter G *second* in the answer submission. It seems silly but i got bitten by that, entering R,B,G instead of R,G,B. Just because that was the written order on my paper. skal/ -pixel 18,21-

Hello, I present you with the Human Shader, a project where anybody can participate and help create the first ever human-brain-only powered shader and mathematical image! Please join us and be part of history! humanshader.com

@BowserJrFan98 You might not yet have access to a certain feature (still rolling out) that allows you to unlock a green block, among other things

@willeastcott @babylonjs @playcanvas Safari 16.4 added WASM SIMD support: platform.uno/blog/safari-16… So SIMD support probably applies to desktop as well, but we’re both using newer Safari versions there?

@willeastcott @babylonjs @playcanvas Just checked and it *doesn’t* work on an iPad Pro running iOS 16.2 - loading bar stays empty.

Quick integration of Havok Physics with @PlayCanvas. WASM module fails to initialize on iOS for some reason. #WebGL #WebGPU