RESOLVED FIXED Bug 75521
Implement hardware accelerated Brightness and contrast filters 
https://bugs.webkit.org/show_bug.cgi?id=75521
Summary Implement hardware accelerated Brightness and contrast filters
BrianMB
Reported 2012-01-03 21:34:59 PST
Test Case: http://jsfiddle.net/brianblakely/ntmAr/ UA: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.15+ (KHTML, like Gecko) Version/5.1.2 Safari/534.52.7
Attachments
Patch (446.12 KB, patch)
2012-01-20 17:52 PST, Chris Marrin 		simon.fraser: review+
DetailsFormatted DiffDiff
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Radar WebKit Bug Importer
Comment 1 2012-01-04 11:03:57 PST
<rdar://problem/10643206>
Chris Marrin
Comment 2 2012-01-17 15:35:53 PST
The real problem here is that the hardware accelerated brightness and contrast filters haven't been implemented yet. There is also a bug in PlatformCALayer::filtersCanBeComposited, where FilterOperation::GRAYSCALE was mistakenly included in the list of filters not accelerated. I will fix that when I do this implementation.
Chris Marrin
Comment 3 2012-01-20 17:52:37 PST
Created attachment 123420 [details] Patch
Simon Fraser (smfr)
Comment 4 2012-01-20 17:58:40 PST
Comment on attachment 123420 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=123420&action=review > Source/WebCore/ChangeLog:11 > + It also changes the spec for the brightness filter to be additive rather than Strictly speaking, it doesn't change the spec, but complies with suggested spec changes. > Source/WebCore/css/CSSParser.cpp:6815 > - // One optional argument, 0-1 or 0%-100%, if missing use 100%. > + // One optional argument, 0-1 or 0%-100%, if missing use 100%, The old version of the comments seems correct. > Source/WebCore/css/CSSParser.cpp:6826 > // Saturate, Brightness and Contrast allow values over 100%. Is this comment wrong now re: brightness?
Chris Marrin
Comment 5 2012-01-21 07:42:57 PST
Landed in https://trac.webkit.org/changeset/105576
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