[Webkit-unassigned] [Bug 29279] [Qt] Use rgb565 format for images on Symbian platform

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=29279





--- Comment #14 from Holger Freyther <zecke at selfish.org>  2009-10-06 06:36:51 PDT ---
 Some more comments why I think it is bad:

>From webkit.org point of view:
   - WebCore/* should not know about WebKit/*

>From performance point of view:
   - For certain things using 16bit per pixel is more than the original image
used. This can be the case for indexed gifs, PNG that are only 8 bit.

   - There is certainly a speed benefit when the image is in the screen depth
as it makes blitting them faster.



The problem is that the API user will not get this right. So in the worse case
he increases memory usage and  reduces performance. A better API would say
"optimize" for speed, "optimize" for memory. And in both cases  QImage reader
should do the right thing for decoding.

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