tree c72420141fd7c15fed4e72864915489e7ba4f9a6
parent 6ce41212f391905761dab48fbd53601f428ca1de
author clopez@igalia.com <clopez@igalia.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1579099446 +0000
committer clopez@igalia.com <clopez@igalia.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1579099446 +0000

[GTK] Turn off antialiasing when rendering with Ahem
https://bugs.webkit.org/show_bug.cgi?id=204671

Reviewed by Carlos Garcia Campos.

Source/WebCore:

Many CSS related tests use the "Ahem" font to compare its special
squared glyphs with the positioned elements of the test. But if
we enable antialiasing for this font, then the antialiasing of
the glyphs causes small pixel differences with the reference test.

So, this patch disables antialiasing for the Ahem font in GTK and WPE
ports. This commit its pretty much like r252701 for the Mac/iOS ports.

Covered by existing tests.

* platform/graphics/cairo/GraphicsContextImplCairo.cpp:
(WebCore::GraphicsContextImplCairo::drawGlyphs):
* platform/graphics/freetype/FontCustomPlatformDataFreeType.cpp:
(WebCore::FontCustomPlatformData::fontPlatformData):
* platform/graphics/freetype/SimpleFontDataFreeType.cpp:
(WebCore::Font::platformInit):

LayoutTests:

* platform/gtk/TestExpectations:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@254567 268f45cc-cd09-0410-ab3c-d52691b4dbfc