Struct RetainedLedger 

pub struct RetainedLedger {
    pub entries: HashMap<u64, RetainedEntry>,
    pub frame: u64,
}

The retained pages the renderer reported resident after a frame.

Fields

entries: HashMap<u64, RetainedEntry>

Resident pages by raw RetainedKey.

frame: u64

Paint serial of the last scene whose retained-store commit completed (0 before any); a refused or failed frame does not advance it.

Implementations

impl RetainedLedger

pub fn empty() -> Self

Nothing resident: what every shell starts with.

pub fn from_entries( frame: u64, entries: impl IntoIterator<Item = (u64, (u32, u32), f32)>, ) -> Self

From (key, extent_px, scale) triples, after serial frame committed.

pub fn covers(&self, serial: u64) -> bool

frame >= serial; serial 0 (an unnumbered paint) is always covered.

pub fn is_resident( &self, key: RetainedKey, extent_px: (u32, u32), scale: f32, ) -> bool

Whether key is resident at exactly extent_px and scale (within 1e-3).

Trait Implementations

impl Clone for RetainedLedger

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 RetainedLedger

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

Formats the value using the given formatter.

impl Default for RetainedLedger

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for RetainedLedger

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RetainedLedger