1882442 - [WebGPU] Demo at https://kishimisu.github.io/WebGPU-Fluid-Simulation/ doesnt draw anything on the screen

Status: RESOLVED FIXED

(Core :: Graphics: WebGPU, defect)

Description

[Mayank Bansal]

Go to https://kishimisu.github.io/WebGPU-Fluid-Simulation/

AR: Nothing is drawn on the screen
ER: It should. This demo used to work in November2024 (see comment at https://bugzilla.mozilla.org/show_bug.cgi?id=1860801#c7)

FWIW, a list of webgpu demos can be found here: https://github.com/mikbry/awesome-webgpu#demos

Comment 1

[Erich Gubler [:ErichDonGubler] (he/him)]

Definitely at least blocked on bug 1879988. There are other shader issues to diagnose, too.

Comment 2

[Erich Gubler [:ErichDonGubler] (he/him)]

I noticed that many (most?) of the shaders being used here are blocked on bug 1829879:

• updateDyeShader
• advectDyeShader (assigning x = 0 when x is an f32)
• boundaryShader and boundaryPressureShader (assigning pos.x += 1 when x is an f32)
• renderShader (i.e., the type of `bgCol` is expected to be `vec3<f32>`, but got `vec3<i32>`)

Comment 3

[Andy Leiserson [:aleiserson]]

The only issue I see in the console right now is the last one from comment #2. It should be fixed by https://github.com/gfx-rs/wgpu/pull/7367.

Comment 4

[Jeff Muizelaar [:jrmuizel]]

This works now.