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Issue 676794 link

Starred by 2 users
Status: Duplicate
Owner:
█ sureshkumari@chromium.org
Last visit > 30 days ago
Closed: Dec 2016
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Regression



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Wrong font rendering

Reported by ism...@i10z.com, Dec 23 2016 
UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Steps to reproduce the problem:
1. Open the attached out.pdf in chromium
2. Note that it only shows a G and some artifact.
3. Wonder what's going on

What is the expected behavior?
PDF correctly renders "IGNITION"

What went wrong?
good-rendering.pdf shows the poppler based PDF viewer showing the correct rendering. bad-rendering.png shows the current M55 chrome rendering of the pdf.

Did this work before? N/A 

Chrome version: 55.0.2883.87  Channel: stable
OS Version: 
Flash Version: Shockwave Flash 24.0 r0

This sample page was extracted from a much larger file.
good-rendering.png
8.7 KB View Download
bad-rendering.png
5.4 KB View Download
out.pdf
604 KB Download

Comment 1 by sureshkumari@chromium.org, Dec 26 2016

Components: Blink>Fonts
Labels: -Type-Bug -Pri-2 M-57 hasbisect Pri-1 Type-Bug-Regression
Owner: danakj@chromium.org
Status: Assigned (was: Unconfirmed)
Able to reproduce the issue on Linux-Ubuntu-14.04 using chrome stable version #55.0.2883.87.
Issue not seen in Windows and Mac.

This is regression issue broken in M51.Please find the Manual bisect information as below

Narrow Bisect::
===============
Good::51.0.2686.0 --   (build revision 382218)
Bad ::51.0.2687.0- --  (build revision 382459)

ChangeLog: 
================
https://chromium.googlesource.com/chromium/src/+log/51.0.2686.0..51.0.2687.0?pretty=fuller&n=10000

Possible suspect:
==================
https://chromium.googlesource.com/chromium/src/+/f6cc81c7e7f6ae0cc7259a276375fa0ccceec26c

Review URL: https://codereview.chromium.org/1824433002

danakj@ could you please look into this issue if it is related to your change,else please help us in finding the appropriate owner for this issue.


Thanks.

Comment 2 by ism...@i10z.com, Dec 26 2016 

FWIW I can also reproduce this on Windows 10 x64 with M55.

Comment 3 by danakj@chromium.org, Dec 29 2016

Components: -Blink>Fonts Internals>Plugins>PDF
Owner: sureshkumari@chromium.org
You've pointed at https://codereview.chromium.org/1824433002 which is a change for WebGL, not pdf related. There's a pdfium roll in the range, seems much more likely, wdyt?

Comment 4 by weili@chromium.org, Dec 29 2016

Mergedinto: 676831
Status: Duplicate (was: Assigned)
The other bug seems having the same file.
►

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