1522022 - Inflate picture caching dirty rects when encountering a blur filter.

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect)

Description

[Glenn Watson [:gw]]

During picture caching, a minimal dirty region is calculated and supplied to child pictures during the primitive traversal.

However, if those child pictures create an off-screen surface, then they may clip to tightly to the dirty rects, such that a parent blur filter doesn't have enough surrounding pixels to create the correct result.

To fix this, when a blur filter is encountered, it should push a new dirty region that is inflated by the blur radius in this filter.

Comment 1

[Glenn Watson [:gw]]

Attachment: Bug 1522022 - Inflate picture caching dirty rects when encountering a blur filter.

Comment 2

[Glenn Watson [:gw]]

This is a bug fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1519411.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/4c5506d94111
Inflate picture caching dirty rects when encountering a blur filter. r=emilio

Comment 4

[Dorel Luca [:dluca]]

https://hg.mozilla.org/mozilla-central/rev/4c5506d94111