Re: [csswg-drafts] [css-view-transitions-1] Clarify rendering constraints for elements participating in a transition (#8139)

Sorry @ydaniv, this is getting fixed soon. :)

I missed another restriction we need, the named element needs to be the [backdrop root](https://drafts.fxtf.org/filter-effects-2/#backdrop-root) for descendants with a backdrop filter. Given that this element's painting will be rendered via the pseudo-element, it doesn't make sense for an ancestor to readback the named element's painting. @mfreed7 FYI.

So the constraints required on a named element, implicitly applied if it has a non-none computed value for view-transition-name, are:

- Generate a stacking context.
- Be a grouping property.
- Be the backdrop filter root for all descendants.

Still undecided on whether it needs to be a containing block.

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Received on Thursday, 19 January 2023 19:57:46 UTC