Bug 191747 - Small pixel errors rendering baseline alignment in vertical mode and ahem font
Summary: Small pixel errors rendering baseline alignment in vertical mode and ahem font
Status: RESOLVED INVALID
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-11-16 06:44 PST by Javier Fernandez
Modified: 2018-11-19 14:23 PST (History)
4 users (show)

See Also:

Attachments
Test case to reproduce the issue (622 bytes, text/html)
2018-11-16 06:44 PST, Javier Fernandez 		no flags Details
Actual result (20.10 KB, image/png)
2018-11-16 06:47 PST, Javier Fernandez 		no flags Details
Layout tests for the EWS (2.04 KB, patch)
2018-11-16 06:49 PST, Javier Fernandez 		no flags Details | Formatted Diff | Diff
Layout tests for the EWS (2.04 KB, patch)
2018-11-16 07:00 PST, Javier Fernandez 		no flags Details | Formatted Diff | Diff
Layout tests for the EWS (2.71 KB, patch)
2018-11-16 07:06 PST, Javier Fernandez 		no flags Details | Formatted Diff | Diff
Show Obsolete (2) View All Add an attachment (proposed patch, testcase, etc.)

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Description Javier Fernandez 2018-11-16 06:44:13 PST 
Created attachment 355053 [details]
Test case to reproduce the issue

Steps to reproduce the issue:

1- load the attached test case

What is the expected behavior?
The inline elements are aligned using their baseline so that they match perfectly with the absolute positioned elements rendered under.
There should be a completely filled black 100px square and no red should be visible at all.

What went wrong ?
Several tiny (1px) red lines are visible, despite the offsets got from the insect indicate that the inline and absolute positioned elements should match perfectly.
Comment 1 Javier Fernandez 2018-11-16 06:47:03 PST 
Created attachment 355054 [details]
Actual result
Comment 2 Javier Fernandez 2018-11-16 06:49:16 PST 
Created attachment 355055 [details]
Layout tests for the EWS
Comment 3 Javier Fernandez 2018-11-16 07:00:21 PST 
Created attachment 355057 [details]
Layout tests for the EWS
Comment 4 Javier Fernandez 2018-11-16 07:06:48 PST 
Created attachment 355058 [details]
Layout tests for the EWS
Comment 5 Javier Fernandez 2018-11-19 14:23:04 PST 
I've been unable, so far, to find out a test case to consistently reproduce the issue.