Closed
Bug 1580063
Opened 5 years ago
Closed 5 years ago
Track dirty rects in WR picture cache tiles, and use them to reduce GPU work.
Categories
(Core :: Graphics: WebRender, enhancement)
Core
Graphics: WebRender
Tracking
()
RESOLVED
FIXED
mozilla71
| Tracking | Status | |
|---|---|---|
| firefox71 | --- | fixed |
People
(Reporter: gw, Assigned: gw)
References
(Blocks 1 open bug)
Details
Attachments
(1 file)
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(deleted),
text/x-phabricator-request
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Details |
No description provided.
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Assignee | |
Updated•5 years ago
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Assignee: nobody → gwatson
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Assignee | |
Comment 1•5 years ago
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This patch adds a simple quadtree structure to each picture cache
tile. This tree is used to track dirty regions of each tile. By
using a tree that can split / merge nodes, the CPU overhead of
tracking dirty areas is minimized, by only splitting nodes where
content is regularly changing.
For now, this patch makes use of the dirty rects to set a single
scissor rect when rendering picture cache tiles. This results in
a significant performance improvement (due to fewer pixels being
drawn) on many pages. In future, the dirty rects will also be
exposed at the API level, allowing clients to leverage partial
present APIs for power saving purposes.
Pushed by gwatson@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/a1da279eb08b
Track dirty rects in WR picture cache tiles, and use them to reduce GPU work. r=nical
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Comment 3•5 years ago
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| bugherder | ||
Status: NEW → RESOLVED
Closed: 5 years ago
status-firefox71:
--- → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla71
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Description
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