1696089 - Clip chains can incorrectly propagate to inner primitives in some cases

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect)

Comment 1

[Glenn Watson [:gw]]

Attachment: Bug 1696089 - Clip chains can incorrectly propagate to inner primitives in some cases.

Fix a bug that can occur when:

• Parent stacking context is considered redundant
• Parent stacking context has a transform
• Parent stacking context establishes a raster root
• Parent stacking context has a clip
• Child stacking context has a filter (or other feature requiring a surface)

In these cases, the clips would be incorrectly propagated to the
primitives inside the child stacking context, instead of applied
to the child stacking context surface itself. This can cause correctness
issues when raster roots are established, and potential performance
issues if raster roots are not established.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/074502342eb5
Clip chains can incorrectly propagate to inner primitives in some cases. r=gfx-reviewers,kvark,bradwerth

Comment 3

[Atila Butkovits]

https://hg.mozilla.org/mozilla-central/rev/074502342eb5