DynamicBufferTestSystem

DynamicBufferTestSystem.cs

public class DynamicBufferTestSystem : SystemBase
{
    private EntityQuery _query;
    private Entity _entity;

    protected override void OnCreate()
    {
        _query = GetEntityQuery(ComponentType.ReadWrite<MyBufferData>());
        _entity = EntityManager.CreateEntity(ComponentType.ReadWrite<MyBufferData>());
        EntityManager.GetBuffer<MyBufferData>(_entity).Add(default);
    }

    protected override void OnUpdate()
    {
        Debug.Log($"{EntityManager.GetBuffer<MyBufferData>(_entity)[0].Value}");

        Dependency = new ChunkJob
        {
            MyBufferDataType = GetArchetypeChunkBufferType<MyBufferData>(),

        }.Schedule(_query);
    }

    public struct MyBufferData : IBufferElementData
    {
        public int Value;
    }

    public struct ChunkJob : IJobChunk
    {
        public ArchetypeChunkBufferType<MyBufferData> MyBufferDataType;

        public void Execute(ArchetypeChunk chunk, int chunkIndex, int firstEntityIndex)
        {
            var bufferAccessor = chunk.GetBufferAccessor(MyBufferDataType);

            for (int i = 0; i < bufferAccessor.Length; i++)
            {
                var buffer = bufferAccessor[i];

                for (int j = 0; j < buffer.Length; j++)
                {
                    var element = buffer[j];
                    element.Value += 1;
                    buffer[j] = element;
                }
            }
        }
    }
}