1687394 - Simplify semantics of `requested_raster_space`

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, task)

Comment 1

[Glenn Watson [:gw]]

Attachment: Bug 1687394 - Simplify semantics of `requested_raster_space`.

Previously, it was possible to request a local/screen raster
space even if the owning stacking context didn't create an
offscreen surface.

This complicates various parts of the code, and also results
in a pass-through picture primitive being created (which we
want to remove as part of the work for #1684781).

With this change, it's only possible to change the raster space
when the enclosing stacking context creates an offscreen surface
for some other reason (e.g. 3d transform, filters etc).

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/1c7e09561958
Simplify semantics of `requested_raster_space`. r=nical

Comment 3

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/1c7e09561958