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Issue 661454 link

Starred by 2 users
Status: Archived
Owner: ----
Closed: Aug 21
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug



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Imperfect font rendering causes MingLiu and MingLiu-ExtB characters to have blurred/distorted appearance

Reported by ycf201...@gmail.com, Nov 2 2016 
UserAgent: Mozilla/5.0 (Windows NT 6.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36

Steps to reproduce the problem:
1. View text consisting of a mixture of MingLiu and MingLiu-ExtB characters
2. When DirectWrite API is enabled
   - MingLiu characters are displayed fine with anti-aliasing
   - MingLiu-ExtB characters with anti-aliasing are blurred

3. When DirectWrite API is disabled
   - MingLiU-ExtB characters appear fine
   - MingLiu characters appear distorted

What is the expected behavior?
Fix the rendering such that the application of anti-aliasing/sub-pixel will be done per character (i.e. not applied for characters that appear blurred when it is applied to like MingLiu-ExtB characters)

Problem exist even in Chrome 54

What went wrong?
As observed in attached file containing screendumps, there seems to be no option or way to allow us to render text containing mixture of MingLiu and MingLiu-ExtB characters.

Did this work before? N/A 

Chrome version: 54.0.2840.59  Channel: n/a
OS Version: 7
Flash Version:
chrome_issue.docx
113 KB Download
test (1).html
297 bytes View Download

Comment 1 by sureshkumari@chromium.org, Nov 4 2016

Labels: M-56
Status: Untriaged (was: Unconfirmed)
Able to reproduce the issue on windows-7 using chrome stable version 54.0.2840.87 and latest canary 56.0.2909.0 .

This is non-regression issue observed from M-30 # 30.0.1550.0 to canary 56.0.2909.0. Hence marking it as Untriaged to get it addressed.
Please find the attached screen-cast .

Note:Not observed the issue in Mac-10.11.6.

Thanks.
issue-661454.mp4
317 KB View Download

Comment 2 by robliao@chromium.org, Aug 21

Status: Archived (was: Untriaged)
Archiving old bugs that haven't been actively assigned in over a year.

If you feel this issue should still be addressed, feel free to reopen it or to file a new issue. Thanks!

Comment 3 by robliao@chromium.org, Aug 21 

Archiving old bugs that haven't been actively assigned in over a year.

If you feel this issue should still be addressed, feel free to reopen it or to file a new issue. Thanks!

Comment 4 by robliao@chromium.org, Aug 21 

Archiving old bugs that haven't been actively assigned in over a year.

If you feel this issue should still be addressed, feel free to reopen it or to file a new issue. Thanks!
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