[ECS] How to pass IComponentData or ISharedComponentData array to Job?

Questions & Answers
1

I am making chunk based game and logic that spawns those chunks is quite slow. I would like to utilize jobs along with CommandBuffer to make it faster, but how can I pass list of Components to job so that I can use CommandBuffer to add them to the Entity?

2

I don’t think it makes tremendous sense to pass IComponentData or ISharedComponentData to instantiation jobs while:

A). Jobs already can access existing IComponentData already via ForEach… jobs (but specific details depends on entities package version)

B). You don’t need CommandBuffer to instantiate entities but EntityManager

var components = new ComponentType[]{
	,	ComponentType.ReadWrite<LocalToWorld>()
	,	ComponentType.ReadWrite<RenderBounds>()
	,	ComponentType.ReadWrite<WorldRenderBounds>()
	,	ComponentType.ReadWrite<ChunkWorldRenderBounds>()
	,	ComponentType.ReadOnly<RenderMesh>()
};
var archetype = entityManager.CreateArchetype( components );

var instance = entityManager.CreateEntity( archetype );
entityManager.SetComponentData( instance , localToWorldData );// transform matrix
entityManager.SetComponentData( instance , new RenderMesh{ mesh = my_mesh , material = my_material );
entityManager.SetComponentData( instance , otherComponentData );

C). NativeArray is a better way of doing just that

NativeArray<myType> inputData;//fill it
var job = new MyJob{ input = inputData };
job.Schedule();