RESOLVED FIXED230145
Linear gradient sometimes is drawn incorrectly and sometimes hangs 
https://bugs.webkit.org/show_bug.cgi?id=230145
Summary Linear gradient sometimes is drawn incorrectly and sometimes hangs
Said Abou-Hallawa
Reported 2021-09-09 23:19:46 PDT
Created attachment 437839 [details] test case Open the attached test case. The linear gradient is not displayed correctly because the start point is greater the end point. The gradient has to be flipped in this case.
Attachments
test case (737 bytes, image/svg+xml)
2021-09-09 23:19 PDT, Said Abou-Hallawa 		no flags
Details
Patch (6.21 KB, patch)
2021-09-09 23:26 PDT, Said Abou-Hallawa 		no flags
DetailsFormatted DiffDiff
Patch (10.81 KB, patch)
2021-09-12 22:31 PDT, Said Abou-Hallawa 		simon.fraser: review+
DetailsFormatted DiffDiff
gradient-start-end-repeat (3.25 KB, image/svg+xml)
2021-09-12 22:33 PDT, Said Abou-Hallawa 		no flags
Details
gradient-start-end-reflect (3.25 KB, image/svg+xml)
2021-09-12 22:33 PDT, Said Abou-Hallawa 		no flags
Details
gradient-start-end-negative-repeat (3.30 KB, image/svg+xml)
2021-09-12 22:34 PDT, Said Abou-Hallawa 		no flags
Details
gradient-start-end-negative-reflect (3.30 KB, image/svg+xml)
2021-09-12 22:34 PDT, Said Abou-Hallawa 		no flags
Details
Patch (10.83 KB, patch)
2021-09-14 22:53 PDT, Said Abou-Hallawa 		no flags
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Said Abou-Hallawa
Comment 1 2021-09-09 23:22:29 PDT
<rdar://82428383>
Said Abou-Hallawa
Comment 2 2021-09-09 23:26:44 PDT
Created attachment 437840 [details] Patch
Said Abou-Hallawa
Comment 3 2021-09-12 22:31:57 PDT
Created attachment 438012 [details] Patch
Said Abou-Hallawa
Comment 4 2021-09-12 22:33:17 PDT
Created attachment 438013 [details] gradient-start-end-repeat
Said Abou-Hallawa
Comment 5 2021-09-12 22:33:39 PDT
Created attachment 438014 [details] gradient-start-end-reflect
Said Abou-Hallawa
Comment 6 2021-09-12 22:34:08 PDT
Created attachment 438015 [details] gradient-start-end-negative-repeat
Said Abou-Hallawa
Comment 7 2021-09-12 22:34:33 PDT
Created attachment 438016 [details] gradient-start-end-negative-reflect
Said Abou-Hallawa
Comment 8 2021-09-12 22:41:34 PDT
Some of the gradients in the attached test cases are not drawn correctly. And If the comments are removed from them, they will hang. The attached patch fixes the correctness and the hang.
Simon Fraser (smfr)
Comment 9 2021-09-14 13:05:27 PDT
Comment on attachment 438012 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=438012&action=review > Source/WebCore/platform/graphics/cg/GradientCG.cpp:154 > + return CGRectGetMaxX(boundingBox) <= std::min(start, end); For symmetry I would write this as `return std::min(start, end) > CGRectGetMaxX(boundingBox)`
Said Abou-Hallawa
Comment 10 2021-09-14 22:53:25 PDT
Created attachment 438214 [details] Patch
EWS
Comment 11 2021-09-15 00:26:26 PDT
Committed r282443 (241696@main): <https://commits.webkit.org/241696@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 438214 [details].
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