[Webkit-unassigned] [Bug 40159] [Qt] Decode images in a separate thread to improve UI responsiveness

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=40159


Markus Goetz <markus.goetz at nokia.com> changed:

           What    |Removed                     |Added
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                 CC|                            |markus.goetz at nokia.com




--- Comment #5 from Markus Goetz <markus.goetz at nokia.com>  2010-11-12 09:24:35 PST ---
I was given some thoughts about this some time ago.
Here's what I still remember:
We currently don't do progressive image decoding (AFAIK), so it should be fine to move the data to the other thread when the image has finished loading.
Also there is probably some file size minimum from that it makes sense to do the work in the thread, e.g. the thread overhead is unimportant for bigger images so for those it makes sense to use a thread.
Also I have this in my notes file:
virtual void RenderImage::imageChanged(WrappedImagePtr, const IntRect* = 0);
My thoughts were maybe that this could be called from the decoder thread or something. No idea :) Too long ago.

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