feComposite does not work as documented
Categories
(Core :: Graphics, defect)
Tracking
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People
(Reporter: echuber2, Unassigned)
Details
Attachments
(1 file)
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43.85 KB,
image/png
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Details |
fecomposite-firefox-example.png
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:71.0) Gecko/20100101 Firefox/71.0
Steps to reproduce:
Tried saving the SVG source listed here and viewing it in Firefox.
https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feComposite
Actual results:
The result does not match the predicted raster image. See attached image with the documentation's rasterized prediction, and the actual rendering in Firefox and Chromium. It would help if other users could confirm what I'm seeing.
Expected results:
Presumably, the rendered SVG should look like the predicted image. (More generally, blending features with SVG seem to be unpredictable, but at least this is a concrete place to begin filing an issue...)
Since the SVG filter blending modes seem to be the only way to use the "over" operator with linear RGB color blending, it would be really nice if this feature actually worked correctly across browsers.
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Comment 1•5 years ago
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feComposite does work. The BackgroundImage pseudo is not implemented though.
Description
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