Viewing profile — pistachiopro

Something that set Baba is You apart for me compared to any other puzzle game I can remember playing is the puzzles themselves were actually "funny." Not like Portal, where you sol…

Take a relatively simple large language model like Llama 1. It has a context of 2048 tokens and each token can be one of 32,000 values. So the lookup table would need 32,000^2048 e…

Practically all materials behave nonlinearly when stretched or compressed a visible amount. For certain structural applications, though, if that happens we've already failed. Linea…

LLMs are being trained on a smaller and smaller percentage of human prose. Right now it seems like code is the best source for the bulk of an LLM's diet, but it's also looking like…

Chris Hecker and Jon Blow (among others) wrote good math and physics content for Game Developer Magazine, but the one I most associate with it is Jeff Lander. He's got copies of th…

According to Wikipedia, 43% of the sun's energy at the surface of the earth is visible light ( https://en.m.wikipedia.org/wiki/Sunlight#Measurement ). So just blocking the other wa…

You can publish an article with a title like this and probably not end up embarrassed. Room temperature and pressure super conductors seem hard enough to find that chances are any …

Have you looked into Small Step XPBD (introduced in the paper "Small Steps in Physics Simulation ")? It's the most efficient nonlinear dynamics integrator/solver I've come across, …

Right, so for his nondeterministic path: r(t) = 0 ; t = T We can see that r''''(T) is either 0 or 1/6, depending on if we go with the top or bottom equation. That does look like so…

> That explains why XPDB moves away from "substepping" the physics Interestingly, XPBD has moved back to substepping! The relatively recent "Small Steps in Physics Simulation" from…

I'm not familiar with the implementation of Quake's physics, but my recollection of the PBD paper was that it was basically a "mathing up" of what was already a fairly common way o…

Looks very interesting! I've been having trouble getting good SIMD performance from WASM. Are there any benchmarks posted anywhere comparing Highway's performance on various native…

I think your question speaks to something deep and interesting about XPBD. All classical mechanics sims revolve on some level around "integrating" Newton's second law of motion: F=…

Realtime fluid sim is making lots of progress, though full 3D sims still appear to be computationally out of reach, at least for games that aren't focused exclusively on them. Here…

Ten Minute Physics is a great resource! Matthias Mueller makes concise demos and explains them really well. (Though I think it would take someone without existing familiarity with …

Thanks for the link. By my reading, of the 8 incidents reported in the last 10 days for Airbus and Boeing aircraft, 7 were collisions with birds and one was: > AIRCRAFT LANDED AND …

Games generally don't use copy on write, but they do often explicitly pipeline processing to happen across multiple frames (usually by manually copying the necessary data from sim …

I believe all the major browser vendors now support the notion of "secure context," where you need to use TLS, headers, and maybe a couple more requirements. They say you regain ac…

Having worked on a fairly popular .io game mostly played by kids on phones and chromebooks over wifi, I concur with everything you said. 1) We updated around 60Hz, and bandwidth wa…

As a longtime C++ programmer, my view is that that manual memory management is a discipline that you can learn somewhat easily and then you don't spend a lot of time thinking about…

Throwing in my data: for physics simulation code, WASM vs native was identical, provided the native code was compiled with automatic SIMD optimizations disabled. On the one hand, t…

Nvidia DLSS is an important part of how they achieved 30Hz at 4k resolution, but that's more of a shading assist and doesn't affect the animation. The facial animation will be comp…

The geometry is fully pre-baked, but wrinkle and blood details respond in realtime to the pre-baked geometry.

Unity recently acquired Ziva, which specializes in the detailed animation of humans and other animals. They were known for their (not realtime) physics-based solutions, but now the…

This is indeed rendered in realtime, but one thing to note is it's a "4D" capture, more-or-less meaning each frame of the animation is its own asset. This makes it possible to repr…