views property
Views this scene owns and renders every frame, in addition to the views passed to each renderViews call.
This is the home for views targeting a RenderTexture (RenderView.target): add one here and it re-renders whenever the scene renders, subject to the target's RenderTexture.update policy, without being threaded through every render call. Views in this list without a target are ignored by renderViews (the screen views come from the call's argument).
Implementation
final List<RenderView> views = [];