diff options
| -rw-r--r-- | ui/vnc.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/ui/vnc.c b/ui/vnc.c index 9e4b2beb71..6002d09407 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -742,6 +742,17 @@ static void vnc_update_server_surface(VncDisplay *vd) width, height); } +static bool vnc_check_pageflip(DisplaySurface *s1, + DisplaySurface *s2) +{ + return (s1 != NULL && + s2 != NULL && + surface_width(s1) == surface_width(s2) && + surface_height(s1) == surface_height(s2) && + surface_format(s1) == surface_format(s2)); + +} + static void vnc_dpy_switch(DisplayChangeListener *dcl, DisplaySurface *surface) { @@ -749,6 +760,7 @@ static void vnc_dpy_switch(DisplayChangeListener *dcl, "Display output is not active."; static DisplaySurface *placeholder; VncDisplay *vd = container_of(dcl, VncDisplay, dcl); + bool pageflip = vnc_check_pageflip(vd->ds, surface); VncState *vs; if (surface == NULL) { @@ -761,14 +773,21 @@ static void vnc_dpy_switch(DisplayChangeListener *dcl, vnc_abort_display_jobs(vd); vd->ds = surface; - /* server surface */ - vnc_update_server_surface(vd); - /* guest surface */ qemu_pixman_image_unref(vd->guest.fb); vd->guest.fb = pixman_image_ref(surface->image); vd->guest.format = surface->format; + if (pageflip) { + vnc_set_area_dirty(vd->guest.dirty, vd, 0, 0, + surface_width(surface), + surface_height(surface)); + return; + } + + /* server surface */ + vnc_update_server_surface(vd); + QTAILQ_FOREACH(vs, &vd->clients, next) { vnc_colordepth(vs); vnc_desktop_resize(vs); |