1729814 - Split spatial tree in to scene and frame building specific structs

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, task)

Comment 1

[Glenn Watson [:gw]]

Attachment: Bug 1729814 - Split spatial tree in to scene and frame building specific structs

The way the spatial tree is referenced and used during scene building
and frame building are very different.

During scene building, the spatial tree is mostly a write-only
struct being used to define spatial nodes. There are a small number
of queries related to snapping, scroll root finding etc.

During frame building, the spatial tree is mostly a read-only
struct used to query relative transforms, coordinate systems etc.

This patch splits them into two separate structs for these different
purposes. Upcoming patches will start to retain each of these structs
across display lists, and this makes it easier to incementally
implement this.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/afc9abf5d887
Split spatial tree in to scene and frame building specific structs r=gfx-reviewers,kvark

Comment 3

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/afc9abf5d887