Struct BackdropCacheKey 

pub struct BackdropCacheKey {
    pub viewport: Size<DevicePixels>,
    pub origin: [u32; 2],
    pub size: [u32; 2],
    pub filter: [[[f32; 4]; 6]; 2],
    pub revision: Arc<[(u64, DrawOrder)]>,
    pub reusable: bool,
}

Exact scene dependencies for a retained backdrop result.

Fields

viewport: Size<DevicePixels>

Viewport changes invalidate even when the crop is unchanged.

origin: [u32; 2]

Full-resolution crop origin and extent.

size: [u32; 2]

Full-resolution crop extent.

filter: [[[f32; 4]; 6]; 2]

Filter parameters; composition-only properties are deliberately excluded.

revision: Arc<[(u64, DrawOrder)]>

Exact immutable identities and draw orders of all preceding paint commands.

reusable: bool

External content and oversized prefixes must refresh every frame.

Trait Implementations

impl Clone for BackdropCacheKey

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BackdropCacheKey

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for BackdropCacheKey

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BackdropCacheKey