Struct MemoryBudget 

pub struct MemoryBudget {
    pub images_mb: u32,
    pub shape_entries: u32,
    pub scene_fragments: u32,
}

Per-cache memory caps in megabytes, honoured by per-tick LRU eviction across the image, shape, scene-fragment, and GPU-texture caches. Each cache exposes bytes_used and evict_until(target_bytes); a shared system reduces the live total below the cap. Defaults target desktop-class machines; override via lumen.toml [perf].

Fields

images_mb: u32

Decoded image cache cap in MB (CPU-side RGBA8 bytes).

shape_entries: u32

Text shape-result cache cap measured in entries.

scene_fragments: u32

Vello scene-fragment cache cap measured in entries.

Trait Implementations

impl Clone for MemoryBudget

fn clone(&self) -> MemoryBudget

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for MemoryBudget

where Self: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::SparseSet

A constant indicating the storage type used for this component.

type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have Component<Mutability = Mutable>, while immutable components will instead have Component<Mutability = Immutable>.

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn relationship_accessor() -> Option<ComponentRelationshipAccessor<Self>>

Returns [ComponentRelationshipAccessor] required for working with relationships in dynamic contexts.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add [ComponentHook] for this Component if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert [ComponentHook] for this Component if one is defined.

fn on_discard() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_discard [ComponentHook] for this Component if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove [ComponentHook] for this Component if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn [ComponentHook] for this Component if one is defined.

fn map_entities<E>(_this: &mut Self, _mapper: &mut E)

where E: EntityMapper,

Maps the entities on this component using the given EntityMapper. This is used to remap entities in contexts like scenes and entity cloning. When deriving Component, this is populated by annotating fields containing entities with #[entities]

impl Debug for MemoryBudget

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

Formats the value using the given formatter.

impl Default for MemoryBudget

fn default() -> Self

Returns the “default value” for a type.

impl Copy for MemoryBudget

impl Resource for MemoryBudget

where Self: Send + Sync + 'static,