Remove the identity transform condition while checking redundant stacking contexts.

RESOLVED FIXED in Firefox 67

Status

()

enhancement
P3
normal
RESOLVED FIXED
5 months ago
5 months ago

People

(Reporter: gw, Assigned: gw)

Tracking

unspecified
mozilla67
Points:
---

Firefox Tracking Flags

(firefox67 fixed)

Details

Attachments

(1 attachment)

No description provided.

The only time that the ancestor spatial node index is read is
during push_stacking_context. This means that even if it was
used as an ancestor for a 3d context, we can safely collapse
it in to the parent stacking context during flattening, if it
is otherwise redundant.

This is a partial fix for picture caching heuristics failing
with the display list produced on mobile devices.

Assignee: nobody → gwatson
Priority: -- → P3
Pushed by gwatson@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/cdd0849c3c11
Remove the identity transform condition while checking redundant stacking contexts. r=emilio
Status: NEW → RESOLVED
Closed: 5 months ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla67
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