Hello John, Thanks a lot for answering. I created a sample program which contains two buttons in a (horizontally) paned window. When I maximize the window and resize the panes I get very slow resizing, however when setting all involved widgets unbuffered resizing is fast (but painting is done with artifacts). Also the profile looks very different: With doublebuffering enabled: 3298 36.0398 libfb.so (no symbols) 1710 18.6865 nvidia_drv.so _nv000805X Widthout doublebuffering: 1974 19.1632 libcairo.so.2.2.3 (no symbols) 1535 14.9015 Xorg (no symbols) 1083 10.5135 libfb.so (no symbols) So there's still some software rendering involved but its _way_ better. I am currently hitting a deadline in a java project, so I'll busy the next 1-2 weeks, however I would really like to get my hands on the buffer manager, do you think theres a chance to get it in (if its well written and stylish correct). I like tuning code, although I've to admit my C/Unix knowledge is rusty, however then its a good training. lg Clemens > That's interesting. gtk2 uses pixmaps for double buffering ... for > each expose rectangle, it will create an off-screen pixmap, ask all > relevant widgets to paint to that, then at the end of expose, paint > the off-screen pixmap on the display. I think it can potentially > create and destroy quite a lot of pixmaps in a single expose > operation. > > You could try making a test program and turning off double buffering > for some widgets: > > http://developer.gnome.org/doc/API/2.0/gtk/GtkWidget.html#id4004696 > > John > _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
