1306956 - Canvas pattern no-repeat has pixel smudging

Status: RESOLVED DUPLICATE of bug 1263776

(Core :: Graphics: Canvas2D, defect)

Description

[andreabogazzi79]

Attachment: Screen Shot 2016-10-02 at 10.22.00 AM.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Steps to reproduce:

Trying to fill an area with a non repeating pattern and a transformation ( translate or rotate ).

http://jsfiddle.net/emeagcnx/22/

The bug is here at least since december 2015, but i think earlier.


Actual results:

the pattern has pixel smudging in the transformation area


Expected results:

the pattern should not have this pixel trail behind
Chrome has same bug
Ie, Edge, safari can render it correctly.

Comment 1

[Alice0775 White]

@reporter

Could you attach results of about:support (Help > Troubleshooting Information)?

Comment 2

[andreabogazzi79]

Application Basics
------------------

Name: Firefox
Version: 49.0
Build ID: 20160916101415
Update Channel: release
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:49.0) Gecko/20100101 Firefox/49.0
OS: Darwin 15.5.0
Multiprocess Windows: 1/1 (Enabled by default)
Safe Mode: false

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All Crash Reports

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Name: Web Compat
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Graphics
--------

Features
Compositing: OpenGL
Asynchronous Pan/Zoom: wheel input enabled
WebGL Renderer: ATI Technologies Inc. -- AMD Radeon R9 M370X OpenGL Engine
Hardware H264 Decoding: Yes
GPU #1
Active: Yes
Vendor ID: 0x8086
Device ID: 0x0d26

Diagnostics
AzureCanvasAccelerated: 1
AzureCanvasBackend: skia
AzureContentBackend: skia
AzureFallbackCanvasBackend: none





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NSS
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Experimental Features
---------------------

Comment 3

[Tooru Fujisawa [:arai]]

sounds like a dupe of bug 1302718 and/or bug 1263776.

but the testcase doesn't match the bug summary.
it uses repeat-y instead of no-repeat, and looks like it's hitting different issue.

Comment 4

[andreabogazzi79]

You can switch in the fiddle both 'no-repeat', 'repeat-x', 'repeat-y' and get the smudging in the non repeating side.

Yes sound similar, in my test case the bleeding is more evident.

Comment 5

[Jamie Nicol [:jnicol]]

This does indeed look like a duplicate of those.

Comment 6

[andreabogazzi79]

bug is still there

Comment 7

[andreabogazzi79]

Attachment: old bug on firefox 64