- From: mattwoodrow via GitHub <sysbot+gh@w3.org>
- Date: Tue, 29 Aug 2023 03:24:26 +0000
- To: public-css-archive@w3.org
Rather than specifying the 'pseudo stacking context' concept as discussed earlier, I'd like to suggest a different approach: `backface-visibility: hidden` should create a regular stacking context, and become a containing block for `position:fixed` descendants, if it participates in a 3D rendering context. For the majority of cases, this should be a no-op, as elements with `backface-visibility:hidden` are generally already transformed (and thus are a stacking context and containing block), or are not part of a 3d context (the property is frequently used a 'compositing' hint, unrelated to its original intent). For the small number of cases where an untransformed element has `backface-visibility:hidden`, but is expecting to still be rotated by an ancestor with `preserve-3d`, this makes the behaviour much simpler and easy to explain. There's still some complexity, in that the backface that is hidden is a plane containing the element and all descendants, with the exception of children that are participating in the 3d rendering context themselves. I think that's an existing problem with the spec though, that the concept of what exactly planes get formed is still undefined. -- GitHub Notification of comment by mattwoodrow Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/918#issuecomment-1696711327 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Tuesday, 29 August 2023 03:24:28 UTC