diff options
| -rw-r--r-- | ui/vnc.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/ui/vnc.c b/ui/vnc.c index e1d6ca323e..25e43808de 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -430,30 +430,24 @@ static int vnc_refresh_server_surface(VncDisplay *vd); static void vnc_dpy_update(DisplayChangeListener *dcl, int x, int y, int w, int h) { - int i; VncDisplay *vd = container_of(dcl, VncDisplay, dcl); struct VncSurface *s = &vd->guest; int width = surface_width(vd->ds); int height = surface_height(vd->ds); - h += y; - - /* round x down to ensure the loop only spans one 16-pixel block per, - iteration. otherwise, if (x % 16) != 0, the last iteration may span - two 16-pixel blocks but we only mark the first as dirty - */ + /* this is needed this to ensure we updated all affected + * blocks if x % VNC_DIRTY_PIXELS_PER_BIT != 0 */ w += (x % VNC_DIRTY_PIXELS_PER_BIT); x -= (x % VNC_DIRTY_PIXELS_PER_BIT); x = MIN(x, width); y = MIN(y, height); w = MIN(x + w, width) - x; - h = MIN(h, height); + h = MIN(y + h, height); for (; y < h; y++) { - for (i = 0; i < w; i += VNC_DIRTY_PIXELS_PER_BIT) { - set_bit((x + i) / VNC_DIRTY_PIXELS_PER_BIT, s->dirty[y]); - } + bitmap_set(s->dirty[y], x / VNC_DIRTY_PIXELS_PER_BIT, + DIV_ROUND_UP(w, VNC_DIRTY_PIXELS_PER_BIT)); } } |