WebGPU new Surface API

[Olle-Lukowski]

So, ever since webgpu-native/webgpu-headers#203, the SwapChain API was merged with the Surface API. I want to use WebGPU for my project and was wondering if anyone is working on making emscripten compatible with the new webgpu.h? If not, I could try to help out, even though I haven't contributed before.

[kainino0x]

No one is working on it right now. Contribution would be welcome - I'm happy to give pointers (you can also find me on Matrix chat @kainino:matrix.org).

Dawn recently implemented the surface API so we're definitely ready to catch Emscripten up to be compatible.

[beaufortfrancois]

@kainino0x Can you share pointers as I'm also working on updating our cross-platform app to use the new surface API?
Right now, it works only with native, not emscripten. See beaufortfrancois/webgpu-cross-platform-app#7

I'd be happy to help on that front.

[beaufortfrancois]

@eliemichel FYI

[beaufortfrancois]

@kainino0x I have a draft PR at #21939 which we can use to specify the shape of the Surface API in Emscripten.