We are developing application using QML/Qt on SDP6.6.  We'd like to blur the underlying window content when another 
window is at foreground. Which means the foreground window is semi transparent and the background window is visible and 
gaussian blur(like MS Windows 7 Aero effect).  

We wanted that the background window content keeps updating even if it is at background. 

Is it possible to do one extra step to do gaussian blur for the background framebuffer before it is overlayed by the 
composition manager?  Thanks in advance. 

 - In graphics.conf, there is only one pipeline available. 
 - the background window and foreground window MAY belong to different process(PID). Or MAY belong to same process.

Br,
Robin