[Marble-devel] hillshading

[Torsten Rahn]

Hi Konrad,

There have been severe changes in the way tiles get loaded in the master 
branch as a preparation for threaded tile loading. 
This apparently has several unwanted side effects in the behavior which still 
need to get ironed out. I know it's unusual that we let code with lots of 
functional regressions into the master branch but in this case we are making 
an exception due to the complexity of the issue.

Most of the severe issues need to get resolved until KDE 4.8 Beta 1.
Until then I suggest to use KDE 4.7 branch and Marble 1.2 for production code.

Best Regards,
Torsten

On Thursday, 11. August 2011 14:07:35 Konrad Enzensberger wrote:
> i like to ask you some questions about marblewidget.
> This week i compiled current marblewidget code and after
> starting my app i faced new behavior regarding the hillshading task.
> 
> If i now switch on hillshading layer, the hillshade is not displayed
> as fast as it was before.
> Also you can see a short time a grey map window, looks like some
> flickering, tested with osm map.
> 
> With my last version, switching on/off hillshading was fast and smoothly,
> the changed behavior must be happend anytime between 16.07. and today .
> 
> Maybe this problem is based on changed code in StackedTileLoder.cpp,
> because additional i faced following problem:
> 
> using the osm map, switched on the hillshading layer and zoomed the map to
> zoomlevel 14 (osm zoom level) sometimes i see havy cpu usage - without
> doing anythig on the map/gui.
> Debugging the code i see running an endless loop, the
> StackedTileLoader::update() methode was called again and again.
> This happens because the needsUpdate member varable is allway set to true -
> even though i did no zoom/scroll ?!
> 
> At last i like to ask you to give me a developement hint:
> i would like to have a dimmer mode, this mode should darken the map window.
> I implemented code similar to sunshading , it works but is not fast enough
> to be able to change dimming value (with QSlider) seamless ((see attached
> screenshot). What would you suggest to do to have a dimmer ?
> 
> thanks for supporting, best regards, konrad
> 
> p.s. congratulations to your valuable work - marblewidget is a really
> fantastic lib !!