RESOLVED FIXED 249151
perspective calc() values aren't clipped to 0 
https://bugs.webkit.org/show_bug.cgi?id=249151
Summary perspective calc() values aren't clipped to 0
Antoine Quint
Reported 2022-12-12 09:13:49 PST
The "perspective" property is specified to only allow non-negative values: https://www.w3.org/TR/css-transforms-2/#perspective-property. However, we don't clip values that would be computed to less than 0, for instance using a calc() expression, and instead deem them invalid internally and thus consider as if "none" was provided, which has implications when blending as blending with "none" means a discrete behavior should be used.
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Antoine Quint
Comment 1 2022-12-12 09:17:29 PST
Pull request: https://github.com/WebKit/WebKit/pull/7493
EWS
Comment 2 2022-12-12 23:47:13 PST
Committed 257779@main (c1c0e7fbede0): <https://commits.webkit.org/257779@main> Reviewed commits have been landed. Closing PR #7493 and removing active labels.
Radar WebKit Bug Importer
Comment 3 2022-12-12 23:48:15 PST
<rdar://problem/103287973>
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