BufferTypeHandle<T>
A handle to a specific buffer component type, used to access an ArchetypeChunk 's component data in a job.
阅读时间1 分钟最后更新于 19 天前
Definition
- Type: Struct
- Namespace: Unity.Entities
- Assembly: UnityEngine.EntitiesModule
public struct BufferTypeHandle<T> where T : unmanaged, IBufferElementData
Remarks
Passing a type handle to a job automatically registers the job as a reader or writer of that type, which allows the DOTS safety system to detect potential race conditions between concurrent jobs which access the same component type.
To create a BufferTypeHandle, use ComponentSystemBase.GetBufferTypeHandle. While type handles can be created just in time before they're used, it is more efficient to create them once during system creation, cache them in a private field on the system, and incrementally update them with BufferTypeHandle<T>.Update just before use.
If the component type is not known at compile time, use DynamicComponentTypeHandle.
Properties
Property | Description |
|---|---|
| GlobalSystemVersion | The global system version for which this handle is valid. |
| IsReadOnly | Reports whether this type handle was created in read-only mode. |
Methods
Method | Description |
|---|---|
| ToFixedString | Returns the formatted FixedString "BufferTypeHandle[type_name_here]". |
| Update | When a BufferTypeHandle is cached by a system across multiple system updates, calling this function inside the system's OnUpdate() method performs the minimal incremental updates necessary to make the type handle safe to use. |