X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;ds=inline;f=qemu%2Fui%2Fsdl2-2d.c;h=95930061eab9cc0b09ecbe6dd0183f61ee22c031;hb=42b05a5201bd85502f818744af562c5c3e1a94c8;hp=d0b340f956392bed969a7a1c7e5722e905a4fdf4;hpb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;p=kvmfornfv.git

diff --git a/qemu/ui/sdl2-2d.c b/qemu/ui/sdl2-2d.c
index d0b340f95..95930061e 100644
--- a/qemu/ui/sdl2-2d.c
+++ b/qemu/ui/sdl2-2d.c
@@ -23,6 +23,7 @@
  */
 /* Ported SDL 1.2 code to 2.0 by Dave Airlie. */
 
+#include "qemu/osdep.h"
 #include "qemu-common.h"
 #include "ui/console.h"
 #include "ui/input.h"
@@ -45,10 +46,23 @@ void sdl2_2d_update(DisplayChangeListener *dcl,
         return;
     }
 
+    /*
+     * SDL2 seems to do some double-buffering, and trying to only
+     * update the changed areas results in only one of the two buffers
+     * being updated.  Which flickers alot.  So lets not try to be
+     * clever do a full update every time ...
+     */
+#if 0
     rect.x = x;
     rect.y = y;
     rect.w = w;
     rect.h = h;
+#else
+    rect.x = 0;
+    rect.y = 0;
+    rect.w = surface_width(surf);
+    rect.h = surface_height(surf);
+#endif
 
     SDL_UpdateTexture(scon->texture, NULL, surface_data(surf),
                       surface_stride(surf));