Bug 225285

Summary: Support reftests using DisplayP3 backing stores rather than sRGB to enable testing non-sRGB functionality
Product: WebKit Reporter: Sam Weinig <sam>
Component: New BugsAssignee: Sam Weinig <sam>
Status: NEW    
Severity: Normal CC: thorton, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
WIP (only supports non-composited WebKitLegacy macOS) ews-feeder: commit-queue-

Sam Weinig
Reported 2021-05-02 17:49:38 PDT
Support reftests using DisplayP3 backing stores rather than sRGB to enable testing non-sRGB functionality
Attachments
WIP (only supports non-composited WebKitLegacy macOS) (21.78 KB, patch)
2021-05-02 17:52 PDT, Sam Weinig 		ews-feeder: commit-queue-
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Sam Weinig
Comment 1 2021-05-02 17:52:18 PDT
Created attachment 427533 [details] WIP (only supports non-composited WebKitLegacy macOS)
Sam Weinig
Comment 2 2021-05-02 19:28:25 PDT
For modern WebKit and composited WebKitLegacy content the issue is that CGWindowListCreateImage() doesn't seem to be return a CGImageRef with the right color space even though the window has a DisplayP3 color space on it. I will check with the window server and CA folks to see if this is expected and/or there is any work around. If there isn't, we could make this new flag incompatible with compositing and use the FrameSnapshotting code when testing non-sRGB, but that seems less than ideal.
Radar WebKit Bug Importer
Comment 3 2021-05-09 17:50:15 PDT
<rdar://problem/77722485>
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