[Webkit-unassigned] [Bug 51498] Avoid decoding images twice in texImage2D

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=51498





--- Comment #10 from Kenneth Russell <kbr at google.com>  2011-04-01 11:27:04 PST ---
(In reply to comment #9)
> Great job.  Once the patch lands, could you please open another bug to track the "png to nonpremultiplied" optimization?  We still decode twice on these situations and we don't have to.

The difficulty there will be getting the PNG decoded in the background with the options desired for WebGL. The background decompression premultiplies the alpha channel into the color channels. I don't think we can change that without imposing a severe performance penalty for all web content.

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