diff --git a/src/core/window.c b/src/core/window.c index a4838d292..4b76e4764 100644 --- a/src/core/window.c +++ b/src/core/window.c @@ -5059,12 +5059,28 @@ meta_window_move_resize_internal (MetaWindow *window, * efficiently as possible */ - /* configure frame first if we grow more than we shrink + /* Normally, we configure the frame first depending on whether + * we grow the frame more than we shrink. The idea is to avoid + * messing up the window contents by having a temporary situation + * where the frame is smaller than the window. However, if we're + * cooperating with the client to create an atomic frame upate, + * and the window is redirected, then we should always update + * the frame first, since updating the frame will force a new + * backing pixmap to be allocated, and the old backing pixmap + * will be left undisturbed for us to paint to the screen until + * the client finishes redrawing. */ - size_dx = w - window->rect.width; - size_dy = h - window->rect.height; + if (window->extended_sync_request_counter) + { + configure_frame_first = TRUE; + } + else + { + size_dx = w - window->rect.width; + size_dy = h - window->rect.height; - configure_frame_first = (size_dx + size_dy >= 0); + configure_frame_first = size_dx + size_dy >= 0; + } if (use_static_gravity) meta_window_set_gravity (window, StaticGravity);