Bug 36103

Summary: Using RGBa for border when box background is a gradient gives uneven coloring
Product: WebKit Reporter: Oli Studholme <webkit.org>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: phiw2, simon.fraser
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Mac (Intel)   
OS: OS X 10.6   
URL: http://oli-studio.com/bugs/browser/rgba-border-gradient-bg.html
Attachments:
Description Flags
test case none

Oli Studholme
Reported 2010-03-14 20:27:10 PDT
an alpha-transparent border should be applied uniformly even when the object’s background is a gradient. In Webkit the top and bottom borders are alpha-transparency of the parent object, but the left and right borders are alpha-transparency of the object’s gradient background.
Attachments
test case (849 bytes, text/html)
2010-03-15 00:55 PDT, Philippe Wittenbergh 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Oli Studholme
Comment 1 2010-03-14 20:28:37 PDT
It seems there are a bunch of border issues, with this bug being an overview of many of them: https://bugs.webkit.org/show_bug.cgi?id=21835
Philippe Wittenbergh
Comment 2 2010-03-15 00:35:04 PDT
Fx 3.6/ Gecko 1.9.2 is fairly buggy in this, still (in short, rendering of the linked testcase is incorrect as well - the gradient should repeat into the border edge and affect the color of the border). That is fixed on Gecko trunk. See https://bugzilla.mozilla.org/show_bug.cgi?id=538909
Philippe Wittenbergh
Comment 3 2010-03-15 00:55:41 PDT
Created attachment 50689 [details] test case Note also that the linked test case doesn't apply the same gradient for Gecko and WebKit (the WebKit gradient has repeat-x, the Gecko one has 'repeat' - the default). Attached testcase corrects this (and the rendering is identical in Gecko 1.9.3a latest nightly and WebKit latest nightly, with the exception of the corners.
Oli Studholme
Comment 4 2010-03-15 04:28:16 PDT
Thanks for adding the extra information Philippe, and for uploading a corrected test case. I’ve also added repeat-x to my test case
Simon Fraser (smfr)
Comment 5 2011-02-25 08:36:58 PST
*** This bug has been marked as a duplicate of bug 21835 ***
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