Struct VariantCache 

pub struct VariantCache {
    pub capacity: usize,
    /* private fields */
}

A capacity-bounded LRU cache for compiled shader variants.

When the cache exceeds capacity entries the least-recently-accessed variant is evicted.

Fields

capacity: usize

Maximum number of variants to hold.

Implementations

impl VariantCache

pub fn new(capacity: usize) -> Self

Create a new empty cache with the given capacity.

pub fn insert(&mut self, variant: CompiledVariant)

Insert a compiled variant. Evicts the LRU entry if at capacity.

pub fn get(&mut self, key: &ShaderKey) -> Option<&CompiledVariant>

Look up a variant by key. Bumps its access time on hit.

pub fn len(&self) -> usize

Number of variants currently cached.

pub fn is_empty(&self) -> bool

True when the cache is empty.

pub fn clear(&mut self)

Remove all entries.

pub fn total_binary_bytes(&self) -> usize

Total binary bytes cached.