Modified Webgpu to work with the stable webgpu-header.

[jalexcole]

I updated the header file to latest, and patched the lib and wgpu.h file in order to pass cargo test.

[jalexcole]

Need help with the GitHub actions:
Android requires: bits/libc-header-start.h
IOS requires: math.h
Windows i686 requires: math.h

[kolkov]

Thanks for working on this @jalexcole — getting the headers updated is the most impactful thing for the ecosystem right now. A few technical observations:

Instance API

The new webgpu.h replaces wgpuGetInstanceCapabilities with two separate functions:

• void wgpuGetInstanceFeatures(WGPUSupportedInstanceFeatures * features)
• WGPUStatus wgpuGetInstanceLimits(WGPUInstanceLimits * limits)

Currently the PR keeps the old function name wgpuGetInstanceCapabilities and changes the parameter type to WGPUInstanceLimits, but the header no longer declares wgpuGetInstanceCapabilities — so downstream projects linking against the new header won't find that symbol. It would need to be renamed to wgpuGetInstanceLimits, and wgpuGetInstanceFeatures would need an implementation (or at least an unimplemented!() stub).

Related stubs that the new header expects:

• wgpuHasInstanceFeature
• wgpuSupportedInstanceFeaturesFreeMembers
• wgpuBufferReadMappedRange / wgpuBufferWriteMappedRange

InstanceDescriptor

The wgpuCreateInstance implementation checks requiredLimits via raw pointer, which looks correct. requiredFeatures / requiredFeatureCount are not handled yet — might be fine to ignore for now since no features are supported, but worth a comment in the code.

CI

Per @almarklein's suggestion, disabling the failing platforms to unblock this sounds right.

[cwfitzgerald]

This looks good! Can you brin it up to date with latest main and we'll get it merged!

[jalexcole]

@cwfitzgerald Up to date.

[cwfitzgerald]

CI seems quite mad about something, the "CI" workflow seems to be a conflict with #490 that needs to be resolved. CD it seems like it can't find apple/actions/setup-xcode@v3