Version: (using KDE 4.1.3) OS: Linux Installed from: SuSE RPMs If blur plugin is enabled, some other effects such as fading and minimize become very slow laggy. Disable blur then everything's smooth. It seems that the blur plugin blurs all semi-transparent windows including those are fading. Maybe some code could be add to temporarily disable blur for windows which is under animation?
Created attachment 30507 [details] present
Created attachment 30508 [details] expected
Maybe doing blur and fade/zoom at the same time overloads the video card.
I set this bug as a duplicate of bug #182809 as it's in general the same problem: we should not blur windows during fade animation. I'm not really sure if that would speed up blur effect. The used technique for blur effect makes everything a little bit slower (painting is redirected into a texture). The blurring itself should be fast as it uses shaders. *** This bug has been marked as a duplicate of bug 182809 ***
No, this is not a duplicate. Furthermore fading in windows/menus with blur enabled looks great. There has been a patch which went into kde 4.2 which makes this possible. No reason to switch it off completely. If blur is slow for you -> don't use it. Perhaps an option should be added which disables bluring during fade-in. But disabling it in general is a mistake.