Re: [fxtf-drafts] Nested backdrop-filters: might not correctly define whether outer filtered backdrop affects backdrop image for inner backdrop-filter (#500)

> In other words, I think the mechanism for backdrop-filter describes painting the filtered backdrop as part of painting the element with the `backdrop-filter`, which contradicts the note that says that painting the backdrop root and its descendants isn't affected by the backdrop root's ancestors (since, read literally, I think it is, since as far as I can tell that definition includes painting the filtered backdrop of the ancestor).

Having written that note, I can confirm your interpretation. The filtered version of the backdrop painted in the outer element **should** be an input to the inner backdrop filter. I considered that to be *part* of the outer backdrop filter element itself. The note was meant to imply that *the ancestors directly* should not be an input to the inner backdrop filter. 

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Received on Thursday, 2 March 2023 16:44:45 UTC