Struct BarrierManager 

pub struct BarrierManager { /* private fields */ }

Manages barriers for a set of GPU resources.

The barrier manager tracks current access states and automatically determines which barriers are needed when a resource transitions to a new access pattern.

Implementations

impl BarrierManager

pub fn new() -> Self

Create a new empty barrier manager.

pub fn register_resource( &mut self, id: ResourceId, initial_access: AccessType, stage: PipelineStage, )

Register a new resource with an initial access type.

pub fn transition( &mut self, id: ResourceId, new_access: AccessType, new_stage: PipelineStage, ) -> bool

Transition a resource to a new access type, emitting a barrier if needed.

Returns true if a barrier was emitted, false if the transition was redundant (same access/stage).

pub fn flush(&mut self) -> Vec<BarrierDesc>

Drain all pending barriers, returning them.

pub fn pending_count(&self) -> usize

Get the number of pending barriers.

pub fn total_barriers(&self) -> u64

Get the total number of barriers emitted since creation.

pub fn optimized_away(&self) -> u64

Get the number of barriers that were optimized away.

pub fn current_access(&self, id: ResourceId) -> Option<AccessType>

Get the current access state of a resource.

pub fn current_stage(&self, id: ResourceId) -> Option<PipelineStage>

Get the current pipeline stage of a resource.

pub fn unregister_resource(&mut self, id: ResourceId) -> bool

Remove a resource from tracking.

pub fn resource_count(&self) -> usize

Get the number of tracked resources.

pub fn reset(&mut self)

Clear all tracked state and pending barriers.

pub fn batch_transition( &mut self, transitions: &[(ResourceId, AccessType, PipelineStage)], ) -> usize

Batch-transition multiple resources at once.

Trait Implementations

impl Default for BarrierManager

fn default() -> Self

Returns the “default value” for a type.