sdl: improve error message on fatal error
The SDL_SetVideoMode() error condition is easily triggered by a user by
simply configure a guest with a host unsupported display resolution
and attempting to enable fullscreen. Since the error is fatal, adding
a bit of debugging help can't harm.
Sample output with this change:
(qemu) Could not open SDL display (1280x1024x32): No video mode large enough for 1280x1024
The width x height might seem redundant as SDL also provides it in
SDL_GetError(), but I believe there are situations where it is
useful. I.e. if there is some other SDL error. Anyway, redundant
information in fatal error messages has never harmed a single gerbil.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/sdl.c b/sdl.c
index 1d1e100..4c00e9a 100644
--- a/sdl.c
+++ b/sdl.c
@@ -112,7 +112,8 @@
height = new_height;
real_screen = SDL_SetVideoMode(width, height, bpp, flags);
if (!real_screen) {
- fprintf(stderr, "Could not open SDL display\n");
+ fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
+ height, bpp, SDL_GetError());
exit(1);
}
}
