The instance IDs that are associated with the draw commands.
Unity only uses this command when it renders object-picking data in the Editor, which is when BatchCullingContext.viewType is equal to BatchCullingViewType.Picking. Otherwise, Unity ignores this value and you can leave it set tonull
. Each element in this array corresponds to the draw command with the same index in the BatchCullingOutputDrawCommands.drawCommands array. Both of these arrays must therefore be the same size.
See Also: BatchRendererGroup.SetPickingMaterial.