Bug 206369

Summary: imported/w3c/web-platform-tests/svg/render/reftests/blending-001.svg has constant failures. Fuziness
Product: WebKit Reporter: WebKit Commit Bot <commit-queue>
Component: Tools / TestsAssignee: Karl Dubost <karlcow>
Status: RESOLVED FIXED    
Severity: Normal CC: karlcow, sabouhallawa, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://github.com/karlcow/wpt/pull/280
Bug Depends on:    
Bug Blocks: 50856    
Attachments:
Description Flags
Archive of layout-test-results from webkit-cq-01
none
comparison of actual and expected none

WebKit Commit Bot
Reported 2020-01-16 13:01:29 PST
This is an automatically generated bug from the commit-queue. imported/w3c/web-platform-tests/svg/render/reftests/blending-001.svg has been flaky on the commit-queue. imported/w3c/web-platform-tests/svg/render/reftests/blending-001.svg was authored by sabouhallawa@apple.com. https://trac.webkit.org/browser/trunk/LayoutTests/imported/w3c/web-platform-tests/svg/render/reftests/blending-001.svg The commit-queue just saw imported/w3c/web-platform-tests/svg/render/reftests/blending-001.svg flake (text diff, -expected.txt was missing, -expected.png was missing an embedded checksum, -expected.png was missing) while processing attachment 387939 [details] on bug 206363. Bot: webkit-cq-01 Port: <class 'webkitpy.common.config.ports.MacPort'> Platform: Mac OS X 10.14.6 The bots will update this with information from each new failure. If you believe this bug to be fixed or invalid, feel free to close. The bots will re-open if the flake re-occurs. If you would like to track this test fix with another bug, please close this bug as a duplicate. The bots will follow the duplicate chain when making future comments.
Attachments
Archive of layout-test-results from webkit-cq-01 (3.19 MB, application/zip)
2020-01-16 13:01 PST, WebKit Commit Bot 		no flags
Details
comparison of actual and expected (146.71 KB, image/png)
2025-11-16 20:38 PST, Karl Dubost 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
WebKit Commit Bot
Comment 1 2020-01-16 13:01:31 PST
Created attachment 387945 [details] Archive of layout-test-results from webkit-cq-01
Alexey Proskuryakov
Comment 2 2020-01-18 23:10:49 PST
@@ -1,14 +1,5 @@ layer at (0,0) size 800x600 RenderView at (0,0) size 800x600 layer at (0,0) size 800x600 - RenderSVGRoot {svg} at (198,131) size 404x404 - RenderSVGContainer {g} at (0,0) size 0x0 - RenderSVGContainer {g} at (198,131) size 404x404 - RenderSVGContainer {g} at (200,133) size 400x401 - RenderSVGRect {rect} at (200,133) size 267x267 [fill={[type=SOLID] [color=#FF0000]}] [x=120.00] [y=80.00] [width=160.00] [height=160.00] - RenderSVGRect {rect} at (333,133) size 267x267 [fill={[type=SOLID] [color=#00FF00]}] [x=200.00] [y=80.00] [width=160.00] [height=160.00] - RenderSVGRect {rect} at (266,266) size 268x268 [fill={[type=SOLID] [color=#0000FF]}] [x=160.00] [y=160.00] [width=160.00] [height=160.00] - RenderSVGContainer {g} at (198,131) size 404x404 - RenderSVGRect {rect} at (198,131) size 271x271 [stroke={[type=SOLID] [color=#000000] [stroke width=2.00]}] [x=120.00] [y=80.00] [width=160.00] [height=160.00] - RenderSVGRect {rect} at (331,131) size 271x271 [stroke={[type=SOLID] [color=#000000] [stroke width=2.00]}] [x=200.00] [y=80.00] [width=160.00] [height=160.00] - RenderSVGRect {rect} at (265,265) size 270x270 [stroke={[type=SOLID] [color=#000000] [stroke width=2.00]}] [x=160.00] [y=160.00] [width=160.00] [height=160.00] + RenderBlock {HTML} at (0,0) size 800x600 + RenderBody {BODY} at (8,8) size 784x584
Karl Dubost
Comment 3 2025-11-16 20:38:17 PST
Created attachment 477415 [details] comparison of actual and expected The failure is just on the top border and seems fully unrelated to the test itself. Also the actual screenshot is better than the expected screenshot. Cleaner rendering. So I wonder… Interestingly it was failing until recently on Firefox. https://wpt.fyi/results/svg/render/reftests/blending-001.svg?label=experimental&label=master&aligned
Said Abou-Hallawa
Comment 4 2025-11-17 10:31:28 PST
This is not a flaky test. It is a constant failure; https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fsvg%2Frender%2Freftests%2Fblending-001.svg. I think this happens due to applying the blend mode through CSS in the test page versus using computed colors in the ref page. This can be fixed by adding ths pixel tolerance to the test: <meta name="fuzzy" content="maxDifference=0-127; totalPixels=0-1220" />
Karl Dubost
Comment 5 2025-11-17 15:14:56 PST
Pull request: https://github.com/WebKit/WebKit/pull/54070
Radar WebKit Bug Importer
Comment 6 2025-11-17 15:16:18 PST
<rdar://problem/164915998>
Karl Dubost
Comment 7 2025-11-17 23:39:11 PST
Submitted web-platform-tests pull request: https://github.com/karlcow/wpt/pull/280
EWS
Comment 8 2025-11-17 23:44:28 PST
Committed 303170@main (b4acdd7f48b9): <https://commits.webkit.org/303170@main> Reviewed commits have been landed. Closing PR #54070 and removing active labels.
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