Can we use Dawn's WebGPU in older versions?

[MarcosCobena]

Hello,

We (@EvergineTeam) are working on the support for WebGPU-Wasm. We already have support for desktop through https://github.com/EvergineTeam/WebGPU.NET.

We consume Emscripten through .NET 8, which is coupled with Emscripten 3.34. We would like to provide native libraries for webgpu.h from that specific version, to simultaneously provide support for desktop and browser. We have seen the recent deprecation of "-s USE_WEBGPU" in favor of Dawn's port, but it requires a much more recent version of Emscripten I think we cannot enjoy for now (maybe with .NET 10 or higher). Having this in mind:

1. Is there any chance of using Dawn's implementation instead of Emscripten's in previous versions of this last?

2. If the answer is no, does it make sense to build our own native libraries (for now we are happy with only Windows-x64) aligned with Emscripten 3.34's webgpu.h? Until now, we grabbed those from https://github.com/gfx-rs/wgpu-native but, obviously, headers do not match :-)

Thank you in advance :-)

[kripken]

cc @kainino0x

[kainino0x]

In principle it could work, though we rely on a number of parts of Emscripten that are not completely stable. Additionally I'm not sure if port file support (where you can point --use-port at a .py file) is in that version, so probably it requires a little more manual setup.

It would be ideal if we can make it work rather than continuing to use the webgpu.h implementation in Emscripten 3.34 because that has a bunch of known issues and will disappear at some point when you pick up a newer Emscripten version. I will let you know if I find a chance to try it with 3.34.