[cairo-bugs] [Bug 10208] Cairo image rendering very slow on devices with depth 16 (and without hardware XrenderComposite)....

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=10208





--- Comment #5 from Oleg Romashin <romaxa at gmail.com>  2010-03-15 14:12:03 PST ---
Created an attachment (id=34082)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=34082)
Updated and more simple patch, fixed painting 16bpp image -> 16bpp xsurface

What about 2x more data transferred in memory bus, just because of 32bpp...?
performance is really different when we are using 16bpp and comparing with
32bpp..
That was the main reason of why N900 still using 16bpp depth...

Also in latest mozilla e10s (content process separation) we are going to use
shared memory buffers, and paint the with cairo-16bpp image surface.

See bug 
https://bugzilla.mozilla.org/show_bug.cgi?id=545632

Also this is about cairo-xlib....
https://bugzilla.mozilla.org/show_bug.cgi?id=496204


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