WebGPU-Based WiFi Simulator

Post by Tiberium » Sun, Oct 20, 2024, 8:18 PM UTC

Scryptonite wrote: post #30

When I run the Waveguide Simulator demo on my Alienware M15 Ryzen Ed. R5 (has a RTX 3070; Windows 11 Pro, Chrome v129), I hear a distinct high pitched flutter noise emanating from my laptop. I thought it was from the speakers, but no, with my volume down it was still present as long as the simulator was playing. Weird, but very cool demo (probably my hardware, never hear this during games or other WebGPU demos). The…

Post by vardump » Sun, Oct 20, 2024, 8:22 PM UTC

soheil wrote: post #26

jasmcole wrote: post #15

Earlier quoted context omitted.

Good question! This is actually a numerical solver for a few coupled partial differential equations - the method in this context (electromagnetism) is called FDTD. It's implemented as a WebGPU compute shader. You absolutely could do this using WebGL2 compute shaders too, but I thought it would be fun to try this newer API.

I don't understand what other type of solution is there to render on a gpu other than a numeric one? Here is a very basic shader for what you want: float freq1 = 2.0; float freq2 = 3.0; float amp = 0.5; pos.z += sin(pos.x * freq1 + uTime) * amp; pos.z += cos(pos.y * freq2 + uTime) * amp; gl_Position = projectionMatrix * modelViewMatrix * vec4(pos, 1.0);

Post by [deleted] » Sun, Oct 20, 2024, 8:30 PM UTC

eyegor wrote: post #34

Scryptonite wrote: post #30

When I run the Waveguide Simulator demo on my Alienware M15 Ryzen Ed. R5 (has a RTX 3070; Windows 11 Pro, Chrome v129), I hear a distinct high pitched flutter noise emanating from my laptop. I thought it was from the speakers, but no, with my volume down it was still present as long as the simulator was playing. Weird, but very cool demo (probably my hardware, never hear this during games or other WebGPU demos). The…

Coil whine (or capacitor whine) from the gpu running at too high a refresh rate. Easiest thing would be to use nvidia control panel to add an fps cap to something like 2x your monitors max rate for the browser (or globally). It's pretty common with any workload after like 600 fps.

Post by pjmlp » Sun, Oct 20, 2024, 8:39 PM UTC

yjftsjthsd-h wrote: post #29

SoKamil wrote: post #17

Earlier quoted context omitted.

ChromeOS is not a Linux distribution, change my mind.

ChromeOS is a Linux kernel with some software bundled on top to make a usable system; it is by definition a Linux distro. Curiously, it's even a GNU/Linux distro, as it uses glibc and GNU coreutils, unlike ex Android which is a non-GNU distro. I will grant that it's a slightly odd distro, but is it any weirder than NixOS or Fedora Silverblue?

Post by yjftsjthsd-h » Sun, Oct 20, 2024, 8:53 PM UTC

pjmlp wrote: post #37

yjftsjthsd-h wrote: post #29

Earlier quoted context omitted.

ChromeOS is a Linux kernel with some software bundled on top to make a usable system; it is by definition a Linux distro. Curiously, it's even a GNU/Linux distro, as it uses glibc and GNU coreutils, unlike ex Android which is a non-GNU distro. I will grant that it's a slightly odd distro, but is it any weirder than NixOS or Fedora Silverblue?

Only runs browser instances. Even Crostini is sandoxed in a way similar to WSL2.