Open
Bug 1340142
Opened 8 years ago
Updated 2 years ago
Performance problems with captureStream from a canvas
Categories
(Core :: Graphics: CanvasWebGL, defect, P3)
Tracking
()
NEW
People
(Reporter: jesup, Unassigned)
References
(Blocks 1 open bug, )
Details
+++ This bug was initially created as a clone of Bug #1329079 +++
> Canvas captureStream's frame capture happens in the refresh driver, and with webgl this does a
> synchronous readback from the gpu. That can be very slow depending on the gpu bandwidth and canvas
> size.
> The synchronous readback can be improved to be async, but that would need support from gfx and be a
> fairly large chunk of work I think. Though it would improve perf of canvas capture greatly too.
A major problem is that it's currently synchronous and on MainThread.
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Reporter | |
Updated•8 years ago
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Reporter | |
Updated•8 years ago
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Component: Audio/Video: MediaStreamGraph → Canvas: WebGL
Priority: P1 → --
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Updated•6 years ago
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Priority: -- → P3
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Updated•2 years ago
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Severity: normal → S3
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Description
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