Bug 283233

Summary: [WebGPU] Blank screen on my DebugDraw project
Product: WebKit Reporter: Jasper St. Pierre <jstpierre>
Component: WebGPUAssignee: Mike Wyrzykowski <mwyrzykowski>
Status: RESOLVED FIXED    
Severity: Normal CC: karlcow, mwyrzykowski, tzagallo, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Mac (Apple Silicon)   
OS: macOS 14   
Attachments:
Description Flags
after fix none

Jasper St. Pierre
Reported 2024-11-16 14:07:10 PST
Visiting https://magcius.github.io/WebGPU-DebugDraw/ , I see a black screen, with no error messages or warnings in the Developer Tools Console. Visiting the same page in Chrome appears to work fine.
Attachments
after fix (201.40 KB, image/png)
2024-11-16 17:04 PST, Mike Wyrzykowski 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2024-11-16 16:22:21 PST
<rdar://problem/140049471>
Mike Wyrzykowski
Comment 2 2024-11-16 16:24:26 PST
message 1 error generated while compiling the shader: 19:17: Unknown interpolation sampling. Expected 'center', 'centroid' or 'sample'
Mike Wyrzykowski
Comment 3 2024-11-16 16:46:19 PST
Looks like we don't support 'either'
Mike Wyrzykowski
Comment 4 2024-11-16 16:46:45 PST
https://www.w3.org/TR/WGSL/#interpolation-sampling-names
Mike Wyrzykowski
Comment 5 2024-11-16 16:50:28 PST
Also missing support for 'first'
Mike Wyrzykowski
Comment 6 2024-11-16 17:04:21 PST
Created attachment 473244 [details] after fix
Mike Wyrzykowski
Comment 7 2024-11-16 17:04:29 PST
Looks like that was it
Mike Wyrzykowski
Comment 8 2024-11-16 17:10:42 PST
Confirmed all of https://gpuweb.github.io/cts/standalone/?q=webgpu:shader,execution,shader_io,fragment_builtins:inputs,interStage:* passes after this change
Mike Wyrzykowski
Comment 9 2024-11-16 17:14:15 PST
Pull request: https://github.com/WebKit/WebKit/pull/36761
Mike Wyrzykowski
Comment 10 2024-11-16 17:17:13 PST
Workaround would be to drop 'either', since 'flat' with neither 'first' nor 'either' implies 'either from my reading of the spec
EWS
Comment 11 2024-11-18 13:56:42 PST
Committed 286752@main (6633411fc505): <https://commits.webkit.org/286752@main> Reviewed commits have been landed. Closing PR #36761 and removing active labels.
Note You need to log in before you can comment on or make changes to this bug.