#include "SDL.h"
int main (int argc, char* args[])
{
SDL_Surface* hello = NULL;
SDL_Surface* screen = NULL;
SDL_Init (SDL_INIT_EVERYTHING);
screen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);
hello = SDL_LoadBMP("hello.bmp");
SDL_BlitSurface(hello, NULL, screen, NULL);
SDL_Flip(screen);
SDL_Delay(2000);
SDL_FreeSurface(hello);
SDL_Quit();
return 0;
}
SDL Image Not Showing Up Mac OS X
Author
Hello, everybody. I'm using SDL on my Mac, using XCode, and when I compile the following program, making sure that "hello.bmp" is in the same folder as the program, the image does not load:
Most likely, the working directory is setup incorrectly, so that the application doesn't see the bmp file at all.
XCode generally sets the working directory to the build directory (i.e. Build/Debug or Build/Release), although this varies by version. If you launch your application from the Finder, SDL will instead set the working directory to the directory the app bundle resides in.
You can print out the result of getcwd() to make sure that the working directory is in fact what you expect it to be.
XCode generally sets the working directory to the build directory (i.e. Build/Debug or Build/Release), although this varies by version. If you launch your application from the Finder, SDL will instead set the working directory to the directory the app bundle resides in.
You can print out the result of getcwd() to make sure that the working directory is in fact what you expect it to be.
Also, be sure to check return values, error codes, and error messages where appropriate. (For example, SDL_LoadBMP() will return NULL if an error has occurred, at which point you can most likely get more information about the error using SDL_GetError()).
Author
swiftcoder,
Thanks for your reply. I recoded the program like this:
It didn't show any output through Terminal or the Console, and you'll have to forgive my noob skills with C++ :p. I'm sure I coded it incorrectly. Please tell me how I may recode this to output the current directory while running the program. I appreciate your time.
Colton
Thanks for your reply. I recoded the program like this:
#include "SDL.h"#include <iostream>using namespace std;int main (int argc, char* args[]){ SDL_Surface* hello = NULL; SDL_Surface* screen = NULL; char title[50] = ""; SDL_Init (SDL_INIT_EVERYTHING); screen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE); hello = SDL_LoadBMP("hello.bmp"); SDL_BlitSurface(hello, NULL, screen, NULL); SDL_Flip(screen); cout << getcwd(title, 120) << endl; SDL_Delay(2000); SDL_FreeSurface(hello); SDL_Quit(); return 0;}It didn't show any output through Terminal or the Console, and you'll have to forgive my noob skills with C++ :p. I'm sure I coded it incorrectly. Please tell me how I may recode this to output the current directory while running the program. I appreciate your time.
Colton
Author
Okay, I take that back, it actually did show me the working directory. It was saying that it's the "Default" directory, where my app bundle is located. There, I placed the .bmp file, and yet it still doesn't show it when I run the program.
Hmm... :/ ?
I appreciate all of your guys' help. jyk, I just saw your post and I think I should try that LoadBMP function. However, I don't know how to use it to test for errors. I would very much appreciate if you could tell me how to do so.
Thanks much. :]
Colton
Hmm... :/ ?
I appreciate all of your guys' help. jyk, I just saw your post and I think I should try that LoadBMP function. However, I don't know how to use it to test for errors. I would very much appreciate if you could tell me how to do so.
Thanks much. :]
Colton
Quote:jyk, I just saw your post and I think I should try that LoadBMP function. However, I don't know how to use it to test for errors. I would very much appreciate if you could tell me how to do so.Well, you're already using the 'load BMP' function :-) Anyway, a simple error test would look like this:
hello = SDL_LoadBMP("hello.bmp");if (hello == NULL) { std::cout << "The image 'hello.bmp' could not be loaded due to the following SDL error: " << SDL_GetError() << std::endl; return 1; // Or whatever you want to do here}
Author
jyk, what you suggested was perfect. It didn't solve the problem, but it helped me to pinpoint it. :]
Here's the Console output for the program upon executing it once more:
2010-02-11 11:41:22.961 Load_Image1[3279:10b] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
Load_Image1(3279,0xa0580720) malloc: *** mmap(size=4294737920) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
The image could not be located due to the following error: Out of memory
The Debugger has exited with status 1.The Debugger has exited with status 1.
***
I understand that the NSQuickDrawView stuff doesn't have to deal with what the true problem is. At first, I found that it wasn't saved as a proper .bmp file. I fixed that, but now the aforementioned problem exists. What can I do to fix it?
I appreciate your help very much.
Colton
Here's the Console output for the program upon executing it once more:
2010-02-11 11:41:22.961 Load_Image1[3279:10b] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
Load_Image1(3279,0xa0580720) malloc: *** mmap(size=4294737920) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
The image could not be located due to the following error: Out of memory
The Debugger has exited with status 1.The Debugger has exited with status 1.
***
I understand that the NSQuickDrawView stuff doesn't have to deal with what the true problem is. At first, I found that it wasn't saved as a proper .bmp file. I fixed that, but now the aforementioned problem exists. What can I do to fix it?
I appreciate your help very much.
Colton
Author
For another reference to go by, here's the current source code of the program:
#include "SDL.h"#include <iostream>using namespace std;int main (int argc, char* args[]){ SDL_Surface* hello = NULL; SDL_Surface* screen = NULL; char title[50] = ""; SDL_Init (SDL_INIT_EVERYTHING); screen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE); hello = SDL_LoadBMP("hello.bmp"); if (hello == NULL) { cout << "The image could not be located due to the following error: " << SDL_GetError() << endl; return 1; } SDL_BlitSurface(hello, NULL, screen, NULL); SDL_Flip(screen); cout << getcwd(title, 120) << endl; SDL_Delay(2000); SDL_FreeSurface(hello); SDL_Quit(); return 0;}Quote:Original post by NoegddgeonMy best guess is that the bmp header is still messed up, causing it to try and load a much larger chunk of image from disk than is actually there.
Load_Image1(3279,0xa0580720) malloc: *** mmap(size=4294737920) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
The image could not be located due to the following error: Out of memory
The Debugger has exited with status 1.The Debugger has exited with status 1.
At first, I found that it wasn't saved as a proper .bmp file. I fixed that, but now the aforementioned problem exists. What can I do to fix it?
Are you by any chance using a PPC Mac?
Author
swiftcoder,
No, I am using an Intel Mac. Thank you for your reply. You're probably headed in the right direction... to be honest, I'm at a loss when it comes to what it could possibly be that is messing up my program. Is there anything that you can recommend I try to fix it? :] Thank you much for your time and patience.
Colton
No, I am using an Intel Mac. Thank you for your reply. You're probably headed in the right direction... to be honest, I'm at a loss when it comes to what it could possibly be that is messing up my program. Is there anything that you can recommend I try to fix it? :] Thank you much for your time and patience.
Colton
This topic is closed to new replies.
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