[OffscreenCanvas] avoid re-compositing the entire canvas when only a small region has changed |
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Issue descriptionThe compositor support the notion of "damage rect", but OffscreenCanvas is not currently using it. At least for 2D canvas, adding the necessary plumbing should not be too hard and should result in immediate performance gains. |
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Comment 1 by junov@chromium.org
, Jun 1 2017