simple-touch: use proper damage in touch_paint()

Should reduce update overhead.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>

diff --git a/clients/simple-touch.c b/clients/simple-touch.c
index f8afbb0..6087fe4 100644 (file)
--- a/clients/simple-touch.c
+++ b/clients/simple-touch.c
@@ -141,7 +141,7 @@ touch_paint(struct touch *touch, int32_t x, int32_t y, int32_t id)
        p += touch->width;
        p[2] = c;
 
-       wl_surface_damage(touch->surface, 0, 0, touch->width, touch->height);
+       wl_surface_damage(touch->surface, x - 2, y - 2, 5, 5);
 }
 
 static void