Bug 113313

Summary:

Background gradient is not correctly redrawn on partial repaint

Product:

WebKit

Reporter:

Stephane Cerveau <scerveau>

Component:

CSS

Assignee:

Nobody <webkit-unassigned>

Status:

UNCONFIRMED

Severity:

Normal

CC:

allan.jensen, dglazkov, simon.fraser, webkit.review.bot, zalan

Priority:

Version:

412.x

Hardware:

OS:

Linux

Attachments:

Description	Flags
Test case	none
screenshot	none
Test if its a generated image to avoid partial redraw	none
Patch to disable partial updates for generated background image	webkit.review.bot: commit-queue-
Archive of layout-test-results from gce-cr-linux-06 for chromium-linux-x86_64	none
Archive of layout-test-results from gce-cr-linux-01 for chromium-linux-x86_64	none

Stephane Cerveau

Reported 2013-03-26 09:06:00 PDT

Created attachment 195095 [details] Test case In attachment here is an example. This is a combination with a div containing a gradient background, a left border and a repeat. In this case we move a blue cursor which is creating a partial update on the background. In this case the background is not correctly redrawn.

Attachments
Test case (1.80 KB, text/html) 2013-03-26 09:06 PDT, Stephane Cerveau	no flags	Details
screenshot (13.50 KB, image/png) 2013-03-26 09:07 PDT, Stephane Cerveau	no flags	Details
Test if its a generated image to avoid partial redraw (3.23 KB, patch) 2013-03-26 10:23 PDT, Stephane Cerveau	no flags	Details Formatted Diff Diff
Patch to disable partial updates for generated background image (3.28 KB, patch) 2013-03-28 03:36 PDT, Stephane Cerveau	webkit.review.bot: commit-queue-	Details Formatted Diff Diff
Archive of layout-test-results from gce-cr-linux-06 for chromium-linux-x86_64 (4.34 MB, application/zip) 2013-03-28 04:59 PDT, WebKit Review Bot	no flags	Details
Archive of layout-test-results from gce-cr-linux-01 for chromium-linux-x86_64 (4.58 MB, application/zip) 2013-03-28 05:58 PDT, WebKit Review Bot	no flags	Details
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.

Stephane Cerveau

Comment 1 2013-03-26 09:07:10 PDT

Created attachment 195096 [details] screenshot This is what happens when pressing a key.

Stephane Cerveau

Comment 2 2013-03-26 10:23:20 PDT

Created attachment 195109 [details] Test if its a generated image to avoid partial redraw

WebKit Review Bot

Comment 3 2013-03-28 03:16:55 PDT

Attachment 195109 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebCore/ChangeLog', u'Source/WebCore/platform/graphics/GeneratedImage.h', u'Source/WebCore/platform/graphics/Image.cpp', u'Source/WebCore/platform/graphics/Image.h']" exit_code: 1 Source/WebCore/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] [5] Total errors found: 1 in 4 files If any of these errors are false positives, please file a bug against check-webkit-style.

Stephane Cerveau

Comment 4 2013-03-28 03:36:05 PDT

Created attachment 195518 [details] Patch to disable partial updates for generated background image Add bug review number in Changelog

WebKit Review Bot

Comment 5 2013-03-28 04:58:56 PDT

Comment on attachment 195518 [details] Patch to disable partial updates for generated background image Attachment 195518 [details] did not pass chromium-ews (chromium-xvfb): Output: http://webkit-commit-queue.appspot.com/results/17298403 New failing tests: fast/gradients/css3-radial-gradients2.html fast/dom/HTMLMeterElement/meter-element-repaint-on-update-value.html fast/dom/HTMLMeterElement/meter-appearances-capacity.html fast/gradients/css3-radial-gradients3.html fast/backgrounds/size/contain-and-cover-zoomed.html fast/gradients/css3-linear-angle-gradients.html fast/gradients/css3-repeating-linear-gradients.html fast/dom/HTMLMeterElement/meter-element.html fast/gradients/unprefixed-color-stop-units.html fast/gradients/css3-color-stop-units.html fast/gradients/unprefixed-radial-gradients2.html fast/gradients/unprefixed-radial-gradients.html fast/gradients/css3-repeating-linear-gradients2.html fast/gradients/unprefixed-radial-gradients3.html fast/gradients/unprefixed-linear-right-angle-gradients.html http/tests/misc/last-modified-parsing.html fast/gradients/css3-radial-gradients.html fast/gradients/css3-color-stops.html fast/backgrounds/size/contain-and-cover.html fast/gradients/css3-linear-right-angle-gradients.html css3/images/cross-fade-background-size.html fast/dom/HTMLMeterElement/meter-styles.html fast/gradients/unprefixed-repeating-linear-gradient.html fast/gradients/unprefixed-linear-angle-gradients.html fast/gradients/radial-centered.html fast/dom/HTMLMeterElement/meter-optimums.html fast/dom/HTMLMeterElement/meter-appearances-rating-relevancy.html fast/gradients/css3-repeating-radial-gradients.html fast/dom/HTMLMeterElement/meter-boundary-values.html fast/gradients/unprefixed-color-stops.html

WebKit Review Bot

Comment 6 2013-03-28 04:59:00 PDT

Created attachment 195533 [details] Archive of layout-test-results from gce-cr-linux-06 for chromium-linux-x86_64 The attached test failures were seen while running run-webkit-tests on the chromium-ews. Bot: gce-cr-linux-06 Port: chromium-linux-x86_64 Platform: Linux-3.3.8-gcg-201212281604-x86_64-with-GCEL-10.04-gcel_10.04

WebKit Review Bot

Comment 7 2013-03-28 05:58:15 PDT

Comment on attachment 195518 [details] Patch to disable partial updates for generated background image Attachment 195518 [details] did not pass chromium-ews (chromium-xvfb): Output: http://webkit-commit-queue.appspot.com/results/17337183 New failing tests: fast/gradients/css3-radial-gradients2.html fast/dom/HTMLMeterElement/meter-element-repaint-on-update-value.html fast/dom/HTMLMeterElement/meter-appearances-capacity.html fast/gradients/css3-radial-gradients3.html fast/backgrounds/size/contain-and-cover-zoomed.html fast/gradients/css3-linear-angle-gradients.html fast/gradients/css3-repeating-linear-gradients.html fast/gradients/unprefixed-repeating-radial-gradients.html fast/dom/HTMLMeterElement/meter-element.html fast/gradients/unprefixed-color-stop-units.html fast/gradients/css3-color-stop-units.html fast/gradients/unprefixed-radial-gradients2.html fast/gradients/unprefixed-radial-gradients.html fast/gradients/css3-repeating-linear-gradients2.html fast/gradients/unprefixed-radial-gradients3.html fast/gradients/unprefixed-linear-right-angle-gradients.html fast/gradients/css3-radial-gradients.html fast/gradients/css3-color-stops.html fast/backgrounds/size/contain-and-cover.html fast/gradients/css3-linear-right-angle-gradients.html css3/images/cross-fade-background-size.html fast/dom/HTMLMeterElement/meter-styles.html fast/gradients/unprefixed-repeating-linear-gradient.html fast/gradients/unprefixed-linear-angle-gradients.html fast/gradients/radial-centered.html fast/dom/HTMLMeterElement/meter-optimums.html fast/dom/HTMLMeterElement/meter-appearances-rating-relevancy.html fast/gradients/css3-repeating-radial-gradients.html fast/dom/HTMLMeterElement/meter-boundary-values.html fast/gradients/unprefixed-color-stops.html

WebKit Review Bot

Comment 8 2013-03-28 05:58:19 PDT

Created attachment 195545 [details] Archive of layout-test-results from gce-cr-linux-01 for chromium-linux-x86_64 The attached test failures were seen while running run-webkit-tests on the chromium-ews. Bot: gce-cr-linux-01 Port: chromium-linux-x86_64 Platform: Linux-3.3.8-gcg-201212281604-x86_64-with-GCEL-10.04-gcel_10.04

Allan Sandfeld Jensen

Comment 9 2013-03-28 05:59:29 PDT

Note this is not Qt specific. The issue seems to be that GeneratorGeneratedImage::draw can not do paints where the srcRect is not the size of m_size.

Stephane Cerveau

Comment 10 2013-03-28 07:29:01 PDT

According to this patch, https://bugs.webkit.org/show_bug.cgi?id=87094, draw does not use cache which would allow to increase performance. I'm wondering if the use of draw in Image::drawTiled is really necessary ?

Allan Sandfeld Jensen

Comment 11 2013-04-01 03:08:16 PDT

I think it would be worthwhile to check if this problem has been solved after the patch for bug 113644 has landed.

alan

Comment 12 2013-04-01 03:44:02 PDT

(In reply to comment #11) > I think it would be worthwhile to check if this problem has been solved after the patch for bug 113644 has landed. No, unfortunately it's not fixed by bug 113644

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