Bug 271191

Summary: Blur behind window decorations does not work
Product: [Plasma] kwin Reporter: Christoph Feck <cfeck>
Component: compositingAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal    
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: "Skeleton" test window decoration that should enable blur behind

Description Christoph Feck 2011-04-18 07:03:46 UTC
Created attachment 59077 [details]
"Skeleton" test window decoration that should enable blur behind

Version:           unspecified (using Devel) 
OS:                Linux

Since KDE 4.6.x blur effect does not work behind a KCommonDecoration, even if it is transparent and sets the "AbilityUsesBlurBehind" property.

Reproducible: Always

Steps to Reproduce:
Install the attached test decoration

Actual Results:  
No blur behind decoration, even when blur effect is enabled (and works behind Plasma panels)

Expected Results:  
Blur works

This affects deKorator and Smaragd theming engines.
Comment 1 Martin Flöser 2011-04-28 19:37:02 UTC
The decoration has also to support the AbilityUsesAlphaChannel to get blur behind the decoration. I just added it to the source code and everything get's nicely blurred.