Bug 200740 – [WebGPU] Use of WebGPU should not force discrete GPU

• Component: New Bugs
• Status: RESOLVED FIXED

[Justin Fan]

[WebGPU] Use of WebGPU should not force discrete GPU

[Justin Fan]

<rdar://problem/53573849>

[Justin Fan]

Created attachment 376325 [details]
Patch

[Myles C. Maxfield]

Comment on attachment 376325 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=376325&action=review

> Source/WebCore/platform/graphics/gpu/GPURequestAdapterOptions.h:40
> +    Optional<GPUPowerPreference> powerPreference { GPUPowerPreference::LowPower };

Why is this optional any more, then?

[WebKit Commit Bot]

Comment on attachment 376325 [details]
Patch

Clearing flags on attachment: 376325

Committed r248704: <https://trac.webkit.org/changeset/248704>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Darin Adler]

Comment on attachment 376325 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=376325&action=review

>> Source/WebCore/platform/graphics/gpu/GPURequestAdapterOptions.h:40
>> +    Optional<GPUPowerPreference> powerPreference { GPUPowerPreference::LowPower };
> 
> Why is this optional any more, then?

I’d like to understand this too.

[Justin Fan]

(In reply to Darin Adler from comment #6)
> Comment on attachment 376325 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=376325&action=review
> 
> >> Source/WebCore/platform/graphics/gpu/GPURequestAdapterOptions.h:40
> >> +    Optional<GPUPowerPreference> powerPreference { GPUPowerPreference::LowPower };
> > 
> > Why is this optional any more, then?
> 
> I’d like to understand this too.

Hi! I noted this only offline to Myles, but the current spec still calls for a ‘?’ in that field and not wrapping the member in Optional results in binding compile error. Us providing the default is an impl detail.

[Darin Adler]

(In reply to Justin Fan from comment #7)
> the current spec still calls for
> a ‘?’ in that field and not wrapping the member in Optional results in
> binding compile error. Us providing the default is an impl detail.

I don’t think this is the right idiom for an optional value with default behavior. We should remove the default value from the struct and have the code that gets the value from the struct apply the default using valueOr.

[Justin Fan]

(In reply to Darin Adler from comment #8)
> (In reply to Justin Fan from comment #7)
> > the current spec still calls for
> > a ‘?’ in that field and not wrapping the member in Optional results in
> > binding compile error. Us providing the default is an impl detail.
> 
> I don’t think this is the right idiom for an optional value with default
> behavior. We should remove the default value from the struct and have the
> code that gets the value from the struct apply the default using valueOr.

Cool, did not know valueOr was a thing. Will update.

[Justin Fan]

Reopening to attach new patch.

[Justin Fan]

Created attachment 376427 [details]
Patch

[EWS Watchlist]

Attachment 376427 [details] did not pass style-queue:


ERROR: Source/WebCore/ChangeLog:8:  You should remove the 'No new tests' and either add and list tests, or explain why no new tests were possible.  [changelog/nonewtests] [5]
Total errors found: 1 in 2 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Justin Fan]

Created attachment 376428 [details]
Patch

[Justin Fan]

Comment on attachment 376428 [details]
Patch

Clearing flags on attachment: 376428

Committed r248749: <https://trac.webkit.org/changeset/248749>

[Justin Fan]

All reviewed patches have been landed.  Closing bug.