[Digikam-devel] [digikam] [Bug 337231] use high resolution pixmaps on retina displays [patch]

Robert Zeller robert.zeller at robert-zeller.org
Fri Aug 8 12:48:58 BST 2014


https://bugs.kde.org/show_bug.cgi?id=337231

Robert Zeller <robert.zeller at robert-zeller.org> changed:

           What    |Removed                     |Added
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                 CC|                            |robert.zeller at robert-zeller
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--- Comment #20 from Robert Zeller <robert.zeller at robert-zeller.org> ---
This patch that has been introduces into Digikam 4.2.0 has a significant
disadvantage on my system (Linux, openSUSE 13.1, Flat Panel BenQ resolution
1920x1080). When "Preview Load Full Image Size" is set to true, I am getting on
some photos strange patterns in the preview, which vanish only when I am
increasing the preview to 50 or more percent. My photos have a size of 36 Mpx.
Obviously the algorithm that reduces the image to the screen size, creates some
kind of a moiree structure if the underlying picture has a regular pattern e.g.
a brick wall. This did not happen with DK 4.1.0. Also I can confirm the grainy
picture in the preview. These effects disappear if I set "Preview Full Image
Size" to false. BUT in that case I am loosing almost totally the high
resolution of the photos when taking a 100% view. I am downgrading to DK 4.1.0
.

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