[Webkit-unassigned] [Bug 38463] Fails on Canvas test case: http://philip.html5.org/tests/canvas/suite/tests/2d.text.draw.baseline.top.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=38463


Robert Hogan <robert at webkit.org> changed:

           What    |Removed                     |Added
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                 CC|                            |robert at webkit.org,
                   |                            |tony at chromium.org




--- Comment #2 from Robert Hogan <robert at webkit.org>  2013-01-29 11:10:53 PST ---
I'd love to know what's going on with our font metrics here. The reason we fail this and the other canvas baseline tests is down to the ascent and descent we calculate for the font before drawing it. I imagine this varies between platforms but I've tested it on Chromium Linux.

Tony - this must be FontMetrics 101, can you shed any light on why Firefox and Chromium Linux (for example) return different ascent/descent for the same font?

The person at http://mudcu.be/journal/2011/01/html5-typographic-metrics/#baselineCanvas looked into this a bit and concluded it was 'invisible space'. :)

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