Liam Don @liamdon

Co-founder of @ClassDojo classdojo.com San Francisco, CA Joined February 2008

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Rafael Chiti @rafaelchiti

a year ago

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

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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…

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Liam Don @liamdon

2 years ago

@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?

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Liam Don @liamdon

2 years ago

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+ 🙂

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Liam Don @liamdon

2 years ago

@deedydas Geoff Ralston - President Y Combinator

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Rachel Strome @StromeRachel

2 years ago

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

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Liam Don @liamdon

3 years ago

@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.

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Liam Don @liamdon

3 years ago

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.

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Liam Don @liamdon

3 years ago

@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!

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Liam Don @liamdon

3 years ago

@growing_daniel :8701

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Liam Don @liamdon

3 years ago

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…

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Liam Don @liamdon

3 years ago

@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!

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Liam Don @liamdon

3 years ago

@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!

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Liam Don @liamdon

3 years ago

@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?

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Liam Don @liamdon

3 years ago

@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%.

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Liam Don @liamdon

3 years ago

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

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Liam Don @liamdon

3 years ago

@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

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Liam Don @liamdon

3 years ago

@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?