public DynamicBuffer<T> AddBuffer<T>(Entity entity) where T : unmanaged, IBufferElementData

Entity

A buffer component stores the number of elements inside the chunk defined by the [InternalBufferCapacity] attribute applied to the buffer element type declaration. Any additional elements are stored in a separate memory block that is managed by the EntityManager.

Adding a component changes an entity's archetype and results in the entity being moved to a different chunk.

(You can add a buffer component with the regular AddComponent methods, but unlike those methods, this method conveniently also returns the new buffer.)

Important: This method creates a sync point, which means that the EntityManager waits for all currently running jobs to complete before adding the component. No additional jobs can start before the method is finished. A sync point can cause a drop in performance because the ECS framework might not be able to use the processing power of all available cores.

Additional Resources: InternalBufferCapacityAttribute