[Feature Request] Scene V2: Add MatchParentSize modifier to enable adaptive local background blur

[Cheuksing Lam (lzc)]

Hi João,

The Pain Point: Currently in Scene V2, it is impossible to create a self-adaptive "glassmorphism" (local background blur) effect that perfectly wraps behind dynamic foreground content. If we apply the Fill Size modifier to a background layer inside a Box (Z-Stack), it breaks the layout by forcing the entire Box to expand to full screen.

The Solution: Could you expose the Match Parent Size modifier (Modifier.matchParentSize()) from the native Jetpack Compose?

This specific scoped modifier is essential for a Box container. It allows the background layer to passively wrap the exact boundaries of the dynamic foreground elements, without measuring or expanding the parent layout.

Thanks for your amazing work on Scene V2.