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Issue 711628 link

Starred by 2 users

Issue metadata

Status: WontFix
Owner: ----
Closed: Apr 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 2
Type: Bug-Regression



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performLayout is taking longer than before

Reported by heejin.r...@samsung.com, Apr 14 2017

Issue description

Steps to reproduce the problem:
1. load web page with plenty text
 (ex. en.wikipedia.org/wiki/0 )

What is the expected behavior?

What went wrong?
Starting from m54, performLayout is taking much longer than previous versions. Making overall page loading performance degrade.
It seems activating complex text path is the main reason for the regression (https://codereview.chromium.org/2123653005).

Did this work before? Yes m53

Does this work in other browsers? N/A

Chrome version: 57.0.2987.133  Channel: stable
OS Version: 
Flash Version:
 
Cc: aelias@chromium.org

Comment 2 by e...@chromium.org, Apr 18 2017

Status: WontFix (was: Unconfirmed)
Intentional change to trade improved correctness for a slight increase in rendering time for text-heavy latin context in same cases.

Specifically by no longer ignoring kerning and ligatures text shaping can be a bit slower, espeically for fonts with large GPOS and GSUB tables.

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