GRRLib Forum / image corruption only after spinning...

bluescreen81 · 2009-07-06 13:39:07

hey there, i got the problem that i just wanted to spin an image.
i've tried to let it fade in and out that works well, but after i inserted the simple 4 lines of code for spinning it, it spins my image then it let it fade out and then right before exiting the program i get just a whole screen in red green etc with image corruption thats it... it just hangs there.
if i delete the 4 lines from spinning it works well again...

Code:

        
//fading in the background image
        
for(i=0;i<=0xff;i+=4){
        GRRLIB_FillScreen(bgcolor);
    GRRLIB_DrawImg((640 - tex_bg.w) / 2, (480 - tex_bg.h) / 2, tex_bg, 0, 1, 1, 0xFFFFFF00|i);
        GRRLIB_Render();
        }
        
        
//spin the image

for(i=0;i<=8000;i+=40){
            GRRLIB_DrawImg((640 - tex_bg.w) / 2, (480 - tex_bg.h) / 2, tex_bg, i, 1, 1, 0xFFFFFFFF);
            GRRLIB_Render();
        }

Crayon · 2009-07-06 16:39:27

Hey, could you tell what is the type of i? Is it an int or something else?

Make your code faster by calculating those things outside the loop.
* (640 - tex_bg.w) / 2
* (480 - tex_bg.h) / 2

Since it's doing weird stuff after this piece of code, could you paste the code after those lines.

bluescreen81 · 2009-07-06 17:21:10

yea you are right its an int declared before.

Code:

        //mount SD Card
        SDCard_Init();
        
        //initialize SD:
        if (!fatInitDefault()) {
        GRRLIB_Printf(20,50,tex_console,fontcolor,1,"FAT could not be initialized!");
        GRRLIB_Printf(20,60,tex_console,fontcolor,1,"restarting...");
        GRRLIB_Render();
        sleep(5);
        WIILIGHT_TurnOff();
        SDCard_deInit();
        //Return to System Menu, exit(0); would be HBC
        SYS_ResetSystem(SYS_RETURNTOMENU, 0, 0);
        }
        
        char cfgpath[256];        
        
        //Open dol File and check exist
        sprintf(cfgpath, DolPath);
        
        exeFile = fopen (cfgpath ,"rb");

            //if nothing found exiting
            if (exeFile==NULL) {
            GRRLIB_Printf(20,50,tex_console,fontcolor,1,"Can't open DOL File...");
            GRRLIB_Printf(20,60,tex_console,fontcolor,1,"Path strings are %s.", strcmp(cfgpath, DolPath) ? "not equal" : "equal");
            GRRLIB_Printf(20,70,tex_console,fontcolor,1,"restarting...");
            GRRLIB_Render();
            fclose (exeFile);
            sleep(5);
            WIILIGHT_TurnOff();
            SDCard_deInit();
            //Return to System Menu, exit(0); would be HBC
            SYS_ResetSystem(SYS_RETURNTOMENU, 0, 0);
            }

    int pos = ftell(exeFile);
    fseek(exeFile, 0, SEEK_END);
    int size = ftell(exeFile);
    fseek(exeFile, pos, SEEK_SET); //return to previous position
        
    exeBuffer = malloc(size);
    fread( exeBuffer, 1, size, exeFile);

    fclose(exeFile);
    
    //Check if valid elf file:
    s32 res;
    res = valid_elf_image(exeBuffer);
    if(res == 1) 
    {
        //elf ok! -> Load entry point of elf file:
        void (*ep)();
        ep = (void(*)())load_elf_image(exeBuffer);

        // code from geckoloader
        u32 level;
        __IOS_ShutdownSubsystems ();
        _CPU_ISR_Disable (level);
        __exception_closeall ();
        
        ep();
        _CPU_ISR_Restore (level);
    } else 
    {
        //Elf not valid, load dol:
        
        //Stuff for arguments
        struct __argv argv;
        bzero(&argv, sizeof(argv));
        argv.argvMagic = ARGV_MAGIC;
        argv.length = strlen(DolPath) + 2;
        argv.commandLine = malloc(argv.length);
        if (!argv.commandLine)
        {
            GRRLIB_Printf(20,50,tex_console,fontcolor,1,"Error creating arguments, couldn't allocate memory for commandLine.");
            GRRLIB_Printf(20,60,tex_console,fontcolor,1,"restarting...");
            GRRLIB_Render();
            sleep(5);
            WIILIGHT_TurnOff();
            SDCard_deInit();
            //Return to System Menu, exit(0); would be HBC
            SYS_ResetSystem(SYS_RETURNTOMENU, 0, 0);
        }
        strcpy(argv.commandLine, DolPath);
        argv.commandLine[argv.length - 1] = '\x00';
        argv.argc = 1;
        argv.argv = &argv.commandLine;
        argv.endARGV = argv.argv + 1;
        
        //fading out the background image
        for(i=0xff;i>=0;i-=4){
        GRRLIB_FillScreen(bgcolor);
        GRRLIB_DrawImg((640 - tex_bg.w) / 2, (480 - tex_bg.h) / 2, tex_bg, 0, 1, 1, 0xFFFFFF00|i);
        GRRLIB_Render();
        }

        run_dol(exeBuffer, &argv);
        
    }
    
    }
    SDCard_deInit();
    GRRLIB_Exit();
    //very important to clean up
    free(tex_bg.data);
    free(tex_console.data);
    return 0;

thats the code after that.

so im fading in with grrlib and fading out at the end.
and meanwhile i would like to add some effects or just try it out with grrlib

JustWoody · 2009-07-15 09:56:43

I know it nothing to do with your problem, but why don't you do the spinning and the fading at the same time?

Something like this:

Code:

for(i=0;i<=0xff;i+=4){
        GRRLIB_FillScreen(bgcolor);
    GRRLIB_DrawImg((640 - tex_bg.w) / 2, (480 - tex_bg.h) / 2, tex_bg, i*10, 1, 1, 0xFFFFFF00|i);
        GRRLIB_Render();
        }

Not sure if this might have get rid of your problem by fluke too

#1 2009-07-06 13:39:07

image corruption only after spinning...

Code:

#2 2009-07-06 16:39:27

Re: image corruption only after spinning...

#3 2009-07-06 17:21:10

Re: image corruption only after spinning...

Code:

#4 2009-07-15 09:56:43

Re: image corruption only after spinning...

Code:

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