WebGPU is not working

[n303ef]

Is there an existing issue for this?

• I have searched both open/closed issues, no issue already exists.

CefSharp Version

120.1.80

Operating System

Windows 11

Architecture

x64

.Net Version

4.7.2

Implementation

WinForms

Reproduction Steps

Open URL https://browserleaks.com/webgpu in CefSharp browser (any settings).

Expected behavior

Should confirm WebGPU support and get available WebGPU info.

Actual behavior

Website says:

No WebGPU adapters found

Regression?

It worked CefSharp 117, but stopped working since 119 (didn't check in 118).

Known Workarounds

No response

Does this problem also occur in the CEF Sample Application

No

Other information

Cefclient - no problem, WebGPU works.

CefSharp Browser is created with WebGl = CefState.Enabled (WebGL works).

[amaitland]

Does the problem reproduce using the MinimalExample?

Did you test with the https://github.com/cefsharp/CefSharp.MinimalExample as per the bug report template?

Testing with the minimal example works as expected for me, nobody else has reported an issue.

Does your app have an app.manifest as per https://github.com/cefsharp/CefSharp/blob/cefsharp/120/NuGet/Readme.txt#L8

[n303ef]

MinimalExample also doesn't work:

[n303ef]

Also checked on several other computers - Cefclient still ok, CefSharp.MinimalExample still no supported adapters.

[amaitland]

Actually I can reproduce this with the MinimalExample. It also reproduces with the latest cefclient.

https://cef-builds.spotifycdn.com/cef_binary_120.1.10%2Bg3ce3184%2Bchromium-120.0.6099.129_windows64_client.tar.bz2

Please confirm which version of cefclient you are using. You can load chrome://version in the browser if you are unsure.

[n303ef]

I've found solution. Two files are missing:

dxil.dll
dxcompiler.dll

These files were created when I've built CEF from source, and they are not provided with CEF redist which is used by CefSharp NuGet package.
With these two files WebGPU works fine.

[amaitland]

CEF doesn't currently package those files. Please create an issue on https://github.com/chromiumembedded/cef/issues and see what the CEF maintainer says about including them in the CEF binary distribution.

[amaitland]

chromiumembedded/cef#3646