The first, primary problem, with an expensive XSync is now fixed. But that's not enough to solve the bug adequately. Here are my comments from the tail end of that fix yesterday...
OK, I've tracked down the main offenders that remain _after_ this fix. 1. XSync() inside PrivateWindow::updateRegion() 2. XShapeGetRectangles() inside PrivateWindow::updateRegion() 3. XShapeGetRectangles() called from decor. If you remove those from the equation then there is no longer a complete freeze. But it still stutters. Further analysis then shows compiz spending its time in one of: (a) XSync in PixmapBinding::bind (b) bindTexImageGLX (c) PrivateVertexBuffer::render I should add that reverting to the old asynchronous damage handling does not help at all with stutters/freezing. The main issues are those listed above. It looks to me like our XShape support could be made more efficient instead if synchronously querying XShapeGetRectangles all the time. -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1027211 Title: [nvidia] Moving or resizing windows freezes and stutters on nvidia (especially if some other window is redrawing). To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1027211/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp