Am Sonntag 09 Mai 2010 14:58:19 schrieb Marco Martin: > > Yes I think so. This would probably require a change in kwin to not start > > the animation before the pixmap is present. > > to further confirm this, it happens also to the (un)minimize effect > sometimes when you have a minimized task since a long time and keeping > thumbnails of minimized windows is disabled in the settings (in this case > before unminimizing you also see the tooltip thumbnail empty) Yes with keeping thumbnails disabled the tooltip thumbnail should be empty as there is no image for it and unminimizing is slow as the pixmap has to be recreated and a texture from pixmap is required. Additionally (un)minimizing causes a focus change which causes Oxygen to animate two windows. Deactivating the Oxygen animation seems to improve the animation for some drivers.
An idea to circumvent this problem is to keep the last known texture (not pixmap) around and to use it for the thumbnail tooltip and while unminizing till the pixmap is created. But that will require quite some changes in KWin's compositing stack.
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