Bug 16627

Summary:

REGRESSION: <canvas> gradient rendering is noisy

Product:

WebKit

Reporter:

Ilmari Heikkinen <ilmari.heikkinen>

Component:

Layout and Rendering

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED MOVED

Severity:

Normal

CC:

bfulgham, krit, mdelaney7, simon.fraser

Priority:

Keywords:

HasReduction, InRadar, Regression

Version:

523.x (Safari 3)

Hardware:

All

OS:

All

Attachments:

Description	Flags
Testcase, a linear gradient with a tight band.	none
Expected result for the testcase	none

Ilmari Heikkinen

Reported 2007-12-27 23:09:22 PST

Tight bands in linear gradients have gaps, which looks ugly. This might be related to http://bugs.webkit.org/show_bug.cgi?id=16045

Attachments
Testcase, a linear gradient with a tight band. (765 bytes, text/html) 2007-12-27 23:10 PST, Ilmari Heikkinen	no flags	Details
Expected result for the testcase (10.01 KB, image/png) 2007-12-27 23:10 PST, Ilmari Heikkinen	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Ilmari Heikkinen

Comment 1 2007-12-27 23:10:20 PST

Created attachment 18138 [details] Testcase, a linear gradient with a tight band.

Ilmari Heikkinen

Comment 2 2007-12-27 23:10:51 PST

Created attachment 18139 [details] Expected result for the testcase

David Kilzer (:ddkilzer)

Comment 3 2007-12-29 15:03:54 PST

Looks okay on Tiger (Mac OS X 10.4.11 (8S165)) with Safari 3.0.4 (523.12.2) with original WebKit. Also looks okay with the above software using a local debug build of WebKit r29031. This should be tested on Leopard (Mac OS X 10.5) as well.

David Kilzer (:ddkilzer)

Comment 4 2007-12-29 17:56:26 PST

Confirmed with Safari 3.0.4 (523.15) with original WebKit on Windows XP SP2.

David Kilzer (:ddkilzer)

Comment 5 2007-12-29 18:34:53 PST

Confirmed with WebKit nightly r29022 with Safari 3.0.4 (5523.10.6) on Mac OS X Server 10.5.1 (9B18). Changing Hardware/OS to All. Also marking a regression since this behavior is not present on Tiger.

David Kilzer (:ddkilzer)

Comment 6 2007-12-29 18:35:39 PST

<rdar://problem/5665235>

Dirk Schulze

Comment 7 2008-10-05 12:41:17 PDT

Is this problem still present with the latest trunk? looks good on gtk and qt.

Gavin Sherlock

Comment 8 2008-10-05 12:46:52 PDT

I still see noise in the thin white line under 10.5.5 in r37300

Brent Fulgham

Comment 9 2022-02-10 12:05:22 PST

The fix for this issue was needed outside the WebKit project, therefore this is being resolved as 'Moved'. This should now be fixed in shipping software.

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