Apple (arguably) initiated the WebGPU API development effort. Surprisingly, Apple is pushing for a shader language based on Microsoft's HLSL. Some of the others are pushing for a lower-level, non-human-readable shader binary format instead (which is what Vulkan takes in).
> Apple (arguably) initiated the WebGPU API development effort.
That's not correct as far as I'm aware. All of us (Mozilla, Google, Apple) had prototypes in the works for the new API, and WebGPU just happened to be the name of the Apple one, which we borrowed later.
https://webkit.org/blog/8482/web-high-level-shading-language...