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Test harness and test suite assumptions wrt anti-aliasing (font smoothing, clearType)

From: Gérard Talbot <css21testsuite@gtalbot.org>
Date: Fri, 16 Mar 2012 21:59:50 -0400
Message-ID: <9133a87bb1c85229ec783b8d3d028a84.squirrel@ed-sh-cp3.entirelydigital.com>
To: "Public CSS test suite mailing list" <public-css-testsuite@w3.org>

The test suite assumpions

and the test harness entrance page
http://test.csswg.org/harness/ [1]

should specifically invite testers to disable anti-aliasing (font
smoothing, ClearType) in their operating system because this can and
will affect rendered layout. I believe the ideal text of such
recommendation would describe how to disable anti-aliasing in Windows,
Mac and Linux.

We already invite testers to assume black text on white background, no
minimum font size and background color printing:

Please make sure your client is configured to:
Default black text on a white background.
No minimum font size.
Print background colors and images.

Linux KDE 4: K application Kickoff launcher / System Settings /
Applications Appearance / Fonts / Use font smoothing : Disabled

Windows XP: Start / Control Panel / Category Appearance and Themes /
Display / Appearance tab / Effects button / and here uncheck the
checkbox "Use the following method to smooth edges of screen fonts"

Under IE8: Tools / Internet Options / Advanced tab / category Multimedia
/ and here uncheck the checkbox " Always use ClearType for HTML"

Often, the operating system must be restarted to make the change
effective, fully in effect.

Contributions to the CSS 2.1 test suite:

CSS 2.1 Test suite RC6, March 23rd 2011:

CSS 2.1 test suite harness:

Contributing to to CSS 2.1 test suite:
Received on Saturday, 17 March 2012 02:00:22 UTC

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