From kwin Mon Nov 17 23:58:45 2008 From: Harald Nikolisin Date: Mon, 17 Nov 2008 23:58:45 +0000 To: kwin Subject: [Bug 175454] New: compositing off without 3D Improvement Message-Id: X-MARC-Message: https://marc.info/?l=kwin&m=122696637908567 http://bugs.kde.org/show_bug.cgi?id=175454 Summary: compositing off without 3D Improvement Product: kwin Version: unspecified Platform: unspecified OS/Version: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: compositing AssignedTo: kwin@kde.org ReportedBy: hochglanz@muenchen-mail.de Version: Unbekannt (using 4.1.3 (KDE 4.1.3) "release 55.2", KDE:KDE4:Factory:Desktop / openSUSE_11.0) Compiler: gcc OS: Linux (x86_64) release 2.6.25.18-0.2-default 2 Features are either broken or they are not broken but bad designed. 1. When I deactive compositing within a KDE4 session, one can clearly see that the desktop effects are not longer present, but the 3D Performance is lost - it could not regained for 3D apps, like a game 2. I can remember (bug 165237) that full-screen apps should not suffer from weak 3D performace when they are started within a KDE4 session with compositing activated - that is not realized. In my opinion everybody can clearly see this behaviour with any 3D app - but to back up this statement I measured a lot of times, the 3D benchmark of the commercial game X2-The Threat. If anybody has a better idea to measure this, let me know. 1. The average framerate of the game with my settings, is under IceWM/KDE4 without desktop effect between 34.4-34.6 fps. 2. On KDE4 with desktop effects enabeled it is between 14.4-14.7 fps (fullscreen app should not going through the compositing?!). If I disable desktop effects and stay within the KDE4 session the framerate will not increase! Only when I leave the session and relogin, I get the higher (34.x fps) framerates. I assume login out will cause to restart the X-Server. This behaviour is more than a showstopper, when I must always logout to get a 3D app working (there are others, not only games, think about GoogleEarth) -- Configure bugmail: http://bugs.kde.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ kwin mailing list kwin@kde.org https://mail.kde.org/mailman/listinfo/kwin