Bug 322355

Summary: Swap strategy auto-detection does not work
Product: [Plasma] kwin Reporter: Ralf Jung <post>
Component: compositingAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED FIXED    
Severity: normal Flags: thomas.luebking: ReviewRequest+
Priority: NOR    
Version: git master   
Target Milestone: ---   
Platform: Other   
OS: Linux   
URL: https://git.reviewboard.kde.org/r/111548/
Latest Commit: http://commits.kde.org/kde-workspace/d1de9f6e309d5757c4bb12095b7cf7f5164b856d Version Fixed In: 4.11

Description Ralf Jung 2013-07-14 17:17:39 UTC 
The auto-detection of the swap strategy does not work - even though I am on an NVidia machine, it uses the "Only when cheap" strategy.

Reproducible: Always




The reason is that at the time Options::setGlPreferBufferSwap is executed, GLPlatform::instance()->driver() is still Driver_Unknown.
Comment 1 Thomas Lübking 2013-08-02 20:58:15 UTC 
Git commit d1de9f6e309d5757c4bb12095b7cf7f5164b856d by Thomas Lübking.
Committed on 17/07/2013 at 13:44.
Pushed by luebking into branch 'KDE/4.11'.

keep buffer swap pref automatic until GPU detected

enforce to "e" (cheap) when driver is still unknown after
detection must be assumed to have run, so a sane value is available
when the context is up
FIXED-IN: 4.11
REVIEW: 111548

M  +3    -0    kwin/eglonxbackend.cpp
M  +3    -0    kwin/glxbackend.cpp
M  +1    -1    kwin/options.cpp

http://commits.kde.org/kde-workspace/d1de9f6e309d5757c4bb12095b7cf7f5164b856d