Struct InstanceBuffer 

pub struct InstanceBuffer { /* private fields */ }

Fixed-capacity instance list rebuilt every frame without allocating.

Pushing past capacity drops the instance and counts it, so an undersized buffer is visible in metrics instead of silently growing (and allocating) on the hot path.

Implementations

impl InstanceBuffer

pub fn with_capacity(capacity: usize) -> Self

An empty buffer holding up to capacity instances. Allocates once, here.

pub fn clear(&mut self)

Starts a new frame.

pub fn push(&mut self, instance: Instance) -> bool

Appends instance; returns false (and counts a drop) when full.

pub fn as_slice(&self) -> &[Instance]

Instances pushed since the last clear.

pub fn len(&self) -> usize

Number of instances pushed.

pub fn is_empty(&self) -> bool

true if nothing was pushed.

pub fn capacity(&self) -> usize

Maximum number of instances.

pub fn dropped(&self) -> u64

Instances dropped since the last clear.

Trait Implementations

impl Clone for InstanceBuffer

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 InstanceBuffer

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

Formats the value using the given formatter.