RESOLVED MOVED 171368
GSUB rvrn FeatureVariations not working 
https://bugs.webkit.org/show_bug.cgi?id=171368
Summary GSUB rvrn FeatureVariations not working
Dominik Röttsches (drott)
Reported 2017-04-27 00:42:29 PDT
Created attachment 308361 [details] rvrn FeatureVariations testcase The rvrn feature [1] and the FeatureVariations part of GSUB describe single glyph substitutions dependent on variation axis values. The variabletest_box.ttf font I am attaching was extended to have two new glyphs for r and R respectively displaying "rvrn base" and "rvrn subst" (for "substituted"). When a new axis 'fvtt', ranging from 0 to 10, is set to >= 5, the rvrn_base glyph is replaced with the rvrn_subst glyph. This enables creating a reftest of where a lowercase r with font-variation-settings: "fvtt" 10; must match the uppercase R, which selects the "rvrn_subst" glyph explicitly. [1] https://www.microsoft.com/typography/OTSpec/features_pt.htm#rvrn The test case attached fails to work in WebKit nightly r215833. I am planning on upstreaming the test case WPT css/fonts-4, including the font which has more variation testing features.
Attachments
rvrn FeatureVariations testcase (3.12 KB, application/zip)
2017-04-27 00:42 PDT, Dominik Röttsches (drott) 		no flags
Details
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Radar WebKit Bug Importer
Comment 1 2017-04-27 11:23:00 PDT
<rdar://problem/31868137>
Brent Fulgham
Comment 2 2022-02-10 19:39:02 PST
The fix for this issue was needed outside the WebKit project, therefore this is being resolved as 'Moved'. This should now be fixed in shipping software.
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