Bug 202504 – clamp rendering of perspective above 0

• Component: CSS
• Status: NEW

[Dean Jackson]

https://github.com/w3c/csswg-drafts/issues/413

Resolved to still support perspective(0), but to clamp the value at rendering time to a value just above 0 (to avoid crazy).

[Radar WebKit Bug Importer]

<rdar://problem/55930338>

[L. David Baron]

I should add that Chromium has successfully shipped this set of spec changes.

For more details see:
https://bugs.chromium.org/p/chromium/issues/detail?id=1205161
https://chromium.googlesource.com/chromium/src/+/50b1cc46560ac75003b6c64db76fc14d23508735
https://groups.google.com/a/chromium.org/g/blink-dev/c/Up0ruPbddro/m/7J-f9pqiAQAJ

I think most of the sites reported as broken have been fixed (in many cases the reports were from the site developers):
https://bugs.chromium.org/p/chromium/issues/list?q=label%3Aperspective-zero-regression&can=1

Also see the Gecko bug at:
https://bugzilla.mozilla.org/show_bug.cgi?id=1630441

[Ahmad Saleem]

Seems that we are passing all tests:

https://wpt.fyi/results/css/css-transforms?label=master&label=experimental&aligned=&q=css-transforms%2Fperspective-

Except one: perspective-split-by-zero-w.html

Do we need to track this in this or create separate new bug for failing test case?

[Karl Dubost]

Created attachment 466647 [details]
rendering in Safari, firefox, chrome

Interesting, at first load it doesn't work in Chrome. 
In Chrome it will appear if I resize the window.