[Webkit-unassigned] [Bug 42267] Canvas: Make assigning the same fillStyle or strokeStyle a fast no-op

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=42267


Andreas Kling <andreas.kling at nokia.com> changed:

           What    |Removed                     |Added
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  Attachment #61529|                            |review?, commit-queue?
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--- Comment #1 from Andreas Kling <andreas.kling at nokia.com>  2010-07-14 09:11:36 PST ---
Created an attachment (id=61529)
 --> (https://bugs.webkit.org/attachment.cgi?id=61529)
Proposed patch

Benchmarking with Hixie's fillRect video test:
http://hixie.ch/tests/adhoc/perf/video/002.html

BEFORE:

Elapsed wall-clock time: 905ms (ideal: 640ms).
Elapsed non-idle time: 265ms (ideal: 0ms).
Speed: 16.57fps (ideal: 25.00fps).

AFTER:

Elapsed wall-clock time: 853ms (ideal: 640ms).
Elapsed non-idle time: 213ms (ideal: 0ms).
Speed: 17.58fps (ideal: 25.00fps).

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