Re: [fxtf-drafts] Fix the backdrop-filter order of operations to get opacity right (#361)

Oh, I see. That's better, but still not what I would expect. I would expect group opacity, where the filtered backdrop and the element's foreground are part of the same group.

Here's an example: https://codepen.io/mstange/pen/wVzKEW
My element has areas with fully opaque foreground rendering, and also areas where the foreground is transparent. In the transparent areas, the filtered backdrop shows through. If I now fade out that element using opacity, I would not expect the formerly-opaque areas to be tinted by the filtered backdrop - I would only expect them to be tinted by the unfiltered backdrop, because that's what will be left behind once opacity is dialed all the way down to zero.

(Incidentally, the "with-background-color" element in that testcase seems to display an unrelated rendering bug in my Chrome build when I hover it and the animation stops...)

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Received on Thursday, 25 July 2019 18:31:36 UTC