[Webkit-unassigned] [Bug 47292] [chromium] Thumbnail generation asserts on zero alpha values.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=47292





--- Comment #2 from Vangelis Kokkevis <vangelis at chromium.org>  2010-10-06 13:26:21 PST ---
(From update of attachment 69982)
View in context: https://bugs.webkit.org/attachment.cgi?id=69982&action=review

Otherwise, I agree with the proposed fix.

> WebCore/platform/graphics/chromium/LayerRendererChromium.cpp:288
> +    // Alpha channel on Windows is incorrect when Skia uses ClearType, don't write alpha:

I found the comment confusing.  Did you mean to punctuate differently?  How about:
Alpha channels on windows is incorrect when rendering text with ClearType.  Mask off alpha to maintain proper premultiplied color values in the backbuffer.

or something like that?

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