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Diffstat (limited to 'qemu/ui/sdl2-2d.c')
-rw-r--r--qemu/ui/sdl2-2d.c14
1 files changed, 14 insertions, 0 deletions
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));