Summary: The "filter" property on CanvasRenderingContext2D allows authors to specify a filter that will get applied during canvas drawing. It accepts the same values as the CSS "filter" property, so CSS filter shorthand functions, references to SVG filters, and chained combinations of the two.

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=927892 and https://bugzilla.mozilla.org/show_bug.cgi?id=1173545

Link to standard: This would be added to the canvas spec. There has been some discussion [1] of this feature on the WhatWG mailing list, but no actual spec has been written yet.

Platform coverage: All

Estimated or target release: Firefox 41 or 42

Preference behind which this will be implemented:
This feature has been implemented behind the preference canvas.filters.enabled . We are planning to flip this preference to true by default in the very near future. The pref flip is being tracked in bug 1173545.

[1] https://lists.w3.org/Archives/Public/public-whatwg-archive/2014Sep/0110.html
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