Bug 184417

Summary:	CSS: filter should reject negative brightness
Product:	WebKit	Reporter:	Eric Willigers <ericwilligers>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	dino, simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	FromImplementor, InRadar
Version:	Safari 11
Hardware:	Unspecified
OS:	Unspecified

Description Eric Willigers 2018-04-09 07:37:03 PDT

https://drafts.fxtf.org/filter-effects/#FilterProperty

brightness() = brightness( <number-percentage> )
Negative values are not allowed.

However, WebKit and Blink currently accept negative values.
https://jsfiddle.net/ericwilligers/y4j8hzvs/

Corresponding Blink bug:
https://bugs.chromium.org/p/chromium/issues/detail?id=776208

Comment 1 Radar WebKit Bug Importer 2018-04-12 12:26:05 PDT

<rdar://problem/39389946>

Comment 2 Simon Fraser (smfr) 2018-04-25 17:59:09 PDT

Fixed via bug 184937.

*** This bug has been marked as a duplicate of bug 184937 ***