Struct BufferPool 

pub struct BufferPool { /* private fields */ }

A simple free-list pool that recycles wgpu::Buffers across dispatches to avoid per-frame reallocation.

Buffers are bucketed by (rounded_size, BufferUsages). The size is rounded up to the next power of two (minimum 256) on both acquire and release so that similarly-sized buffers can be reused interchangeably.

Limitations

The pool does not destroy idle buffers; callers that need memory-bounded recycling should call BufferPool::available_count and drop excess buffers manually.

Implementations

impl BufferPool

pub fn new() -> Self

Create an empty pool.

pub fn acquire( &mut self, device: &Device, size: u64, usage: BufferUsages, ) -> Buffer

Acquire a buffer of at least size bytes with the given usage.

Returns a recycled buffer from the pool when one is available, or allocates a new one. The actual buffer size may be larger than size due to power-of-two rounding.

pub fn release(&mut self, size: u64, usage: BufferUsages, buffer: Buffer)

Return a buffer to the pool so it can be reused by future acquire calls.

size should be the logical size the caller used for acquire; the pool applies the same rounding so the buffer lands in the correct bucket.

pub fn available_count(&self, size: u64, usage: BufferUsages) -> usize

Number of idle buffers in the (size, usage) bucket.

Trait Implementations

impl Default for BufferPool

fn default() -> Self

Returns the “default value” for a type.