DE-agnostic wallpaper manager that supports smooth transistion?

I'm using Cinnamon which supports plenty of transitional effects but somehow not wallpaper fade-in. I looked for third party wallpaper managers, but so far I've only found ones that either don't support transition or is acting as a front end of the DE's built-in wallpaper handling.

I'm sure I could write a simple script to prepare the transition with ImageMagic and repaint the wallpaper in a loop, but that's not exactly efficient. Is there any existing tool that does what I want with proper hardware acceleration?

I'm aware of the GLSlideshow screen saver, however running it with the -root options doesn't result in any visible effect on my system, and with no error output I'm not sure what to do. XWinWrap does work, but leads to multiple minor annoyances since that's not a real wallpaper. It also doesn't handle multi-monitor the way I want.


I don't really need a wallpaper "manager", just a tool to paint the root windows with smooth transition. Handling wallpaper collections with a script is easy, but the actual painting needs to be more efficient than the ImageMagic approach.



Edit: Cinnamon supports wallpaper transition natively now.

 

If you're not afraid to work with config files, there's xscreensaver: http://unix.stackexchange.com/questions/58224/is-there-a-way-to-make-feh-fade-in-between-transitions

 

Thanks for the reply.

Actually the GLSlideshow screensaver I mentioned in the original post is the xscreensaver solution, but I couldn't get it to work with -root and with XWinWrap there are multiple issues. The new background window now makes the WM confused and workspace transition looks wrong. It's not picked up by Expo view. Conky is covered. I can't set it to span one image on multiple monitors. There is also a strange resampling issue that makes portrait screens show very low resolution.