On Fre, 2010-08-27 at 21:43 +0200, Clemens Eisserer wrote: > Hi again, > > Seems I have found the cause of the problem: Freeing Pictures that > belong to an already destroyed window cause the RenderBadPicture > error. The XID values in the error-log were wrong and therefor > misleading. > > What puzzles me is the inconsistent behaviour: > When a Window is destroyed, all its associated Pictures are freed, > however this is not the case for Pixmaps. > Even after calling XFreePixmap the assiciated Picture-Objects stay alive.
Pixmaps are reference-counted and the picture takes a reference on the pixmap, so the pixmap can't go away before the picture. However this isn't true for windows, so as soon as the window is destroyed presumably the picture is destroyed as well or becomes invalid. If you can't avoid using window pictures, it's probably best to make sure you destroy any pictures before the windows themselves. -- Earthling Michel Dänzer | http://www.vmware.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ [email protected]: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: [email protected]
