[Webkit-unassigned] [Bug 49719] Qt should handle unmultiplied RGBA pixel arrays

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=49719





--- Comment #2 from Andreas Kling <kling at webkit.org>  2010-11-18 02:13:20 PST ---
(From update of attachment 74217)
The reason we're not doing this is because when using the "raster" graphics system, convertToFormat(ARGB32_PM) is a no-op.
With that in mind, combining the RGB<->BGR and premultiplication into a single pass over the image is faster than anything Qt can do.

This patch will regress performance, so is there any other reason to do this besides code cleanliness?

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