SDL scaling uses a broken version of SDL_rotozoom
which does out-of-bounds memory access.
Disable it for QEMU 1.1 until a better solution is found.
Cc: Anthony Liguori <aligu...@us.ibm.com>
Signed-off-by: Stefan Weil <s...@weilnetz.de>
---
qemu-doc.texi | 4 ++--
ui/sdl.c | 12 ++++++++++++
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 9e07ba6..a72289f 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -290,11 +290,11 @@ Toggle full screen
@item Ctrl-Alt-+
@kindex Ctrl-Alt-+
-Enlarge the screen
+Enlarge the screen. This function is currently disabled.
@item Ctrl-Alt--
@kindex Ctrl-Alt--
-Shrink the screen
+Shrink the screen. This function is currently disabled.
@item Ctrl-Alt-u
@kindex Ctrl-Alt-u
diff --git a/ui/sdl.c b/ui/sdl.c
index f6f711c..8700b7a 100644
--- a/ui/sdl.c
+++ b/ui/sdl.c
@@ -34,6 +34,13 @@
#include "x_keymap.h"
#include "sdl_zoom.h"
+#if 0
+/* Scaling with SDL is broken, therefore it is disabled by default.
+ * It can be enabled by defining the following macro.
+ */
+# define CONFIG_SDL_SCALING
+#endif
+
static DisplayChangeListener *dcl;
static SDL_Surface *real_screen;
static SDL_Surface *guest_screen = NULL;
@@ -638,6 +645,7 @@ static void handle_keydown(DisplayState *ds, SDL_Event *ev)
break;
case 0x1b: /* '+' */
case 0x35: /* '-' */
+#if defined(CONFIG_SDL_SCALING)
if (!gui_fullscreen) {
int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
160);
@@ -648,6 +656,8 @@ static void handle_keydown(DisplayState *ds, SDL_Event *ev)
vga_hw_update();
gui_keysym = 1;
}
+#endif /* CONFIG_SDL_SCALING */
+ break;
default:
break;
}
@@ -889,9 +899,11 @@ static void sdl_refresh(DisplayState *ds)
handle_activation(ds, ev);
break;
case SDL_VIDEORESIZE:
+#if defined(CONFIG_SDL_SCALING)
sdl_scale(ds, ev->resize.w, ev->resize.h);
vga_hw_invalidate();
vga_hw_update();
+#endif
break;
default:
break;
--
1.7.9
