WebRender’s internal representation of the scene.
A complete representation of the layout bundling visible pipelines together.
A representation of the layout within the display port for a given document or iframe.
Stores a map of the animated property bindings for the current display list. These
can be used to animate the transform and/or opacity of a display list without
re-submitting the display list itself.
Stores the allocation sizes of various arrays in the built
scene. This is retrieved from the current frame builder
and used to reserve an approximately correct capacity of
the arrays for the next scene that is getting built.