view transitions for fullscreen change and orientation change

[fuweichin]

For a web app without internal navigation, neither SPA nor MPA, like a game, I expect a standard view transitions api for fullscreen and orientation change.

Currrently iOS Safari doesn't support non-video element fullscreen or orientation lock (in fullscreen mode), while both its default video fullscreen transition and page orientation transition are quite smooth.

In the mean while, Android Chrome supports Fullscreen API and Screen Orientation, but the fullscreen transition and orientation transition need some improvements to be smooth enough, I'm trying to add transition with CSS/JavaScript but then I quit.

And I think a supplementary proposal, like View Transitions for Fullscreen/Orientation, can be initiated.

P.S. The abovementioned Safari, Chrome are my iPhone 8 Plus, Pixel 3 respectively.