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Problem getting Image to display.

 
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JesusXP



Joined: 17 Jan 2006
Posts: 80
Location: Ontario, Canada
PostPosted: Thu Feb 09, 2006 1:24 pm    Post subject: Problem getting Image to display. Reply with quote
Hi guys... I'll post my code here, and maybe you can let me know whats wrong, I'm trying to get a picture to display and than control him with the d-pad. This is just mashing together stuff I learned from the scriptscribbler.com/psp tut's...

Code:

/*   
   Program Name: Fuckin Around - Part Deux
   Author: Mark Pereira
   Date: Wed Feb 8, 1:19AM
*/

#include <pspdisplay.h>
#include <pspctrl.h>
#include <pspkernel.h>
#include <pspdebug.h>
#include <pspgu.h>
#include <png.h>
#include <stdio.h>
#include "graphics.h"

#define printf pspDebugScreenPrintf
#define MAX(X,Y) ((X)>(Y)?(X):(Y))

PSP_MODULE_INFO("Fuckin Around - Part Deux", 0, 1, 1);

/* Exit callback */
int exit_callback(int arg1, int arg2, void *common){
   sceKernelExitGame();
   return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp){
   int cbid;
   
   cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
   sceKernelRegisterExitCallback(cbid);
   
   sceKernelSleepThreadCB();
   
   return 0;
}
/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void){
   int thid = 0;
   
   thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
   if(thid >= 0){
      sceKernelStartThread(thid, 0, 0);
   }
   
   return thid;
}

int main(){

   SceCtrlData pad;
   char buffer[200];
   Image* ourImage;
   
   pspDebugScreenInit();
   SetupCallbacks();
   initGraphics();
   
   sprintf(buffer, "meDude.png");
   ourImage = loadImage(buffer);
   
   if(!ourImage){
      //Image load failed
      printf("Image load failed!\n");
   }else{
      int x = 0;
      int y = 0;

      sceDisplayWaitVblank();
      blitAlphaImageToScreen(0, 0, 32, 32, ourImage, x, y);
      while(1){
         sceDisplayWaitVblankStart();
         
         sceCtrlReadBufferPositive(&pad, 1);

         if(pad.Buttons & PSP_CTRL_LEFT){
            if(x>0){x--;}
         }

         if(pad.Buttons & PSP_CTRL_RIGHT){
            if(x<480-32){x++;}
         }
         
         if(pad.Buttons & PSP_CTRL_UP){
            if(y>0){y--;}
         }
         
         if(pad.Buttons & PSP_CTRL_DOWN){
            if(y<272-32){y++;}
         }
         
      }   
      
      flipScreen();
   }
   
   sceKernelSleepThread();
   return 0;
}



I havent got a clue, please help.... I have compiled (make kxploit) I have placed theDude.png in the same folders on the psp (/fuckinround , /fuckinround2%), No clue now what to do, Any help would be greatly appreciated, thanks.
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NovaCaine



Joined: 20 Dec 2005
Posts: 34
Location: New Zealand
PostPosted: Thu Feb 09, 2006 1:33 pm    Post subject: Reply with quote
Hey JesusXP,

Well for starters your loading an image called meDude.png. Are you able to just load up the image and show it without moving it around?

Is the code just exiting right away or is it just giving you a black screen?

Other than that, I can't see any problems with your code at this point

EDIT: Just trying to run your code now, and noticed that above blitAlphaImageToScreen you should have sceDisplayWaitVblankStart, not sceDisplayWaitVblank.

EDIT2: Hmm, Ok got it compiling now, but I just get a black screen.....

Have to go now, and I don't have the net at home atm, so I'll give it another try tomorrow, unless you've fixed it by then :P
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Last edited by NovaCaine on Thu Feb 09, 2006 1:57 pm; edited 1 time in total
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Raphael



Joined: 17 Jan 2006
Posts: 646
Location: Germany
PostPosted: Thu Feb 09, 2006 1:50 pm    Post subject: Reply with quote
Can't see anything special there too. More information would be good, at least what actually happens when you start the program.

Then, my first guess would be the image isn't loaded correctly, so try giving the complete path to your image to the loader first, ie "ms0:/PSP/GAME/YOURFOLDER/meDude.png". That seems to often be the problem with getting data from the stick loaded.
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NovaCaine



Joined: 20 Dec 2005
Posts: 34
Location: New Zealand
PostPosted: Thu Feb 09, 2006 1:59 pm    Post subject: Reply with quote
Thats what I originally thought too, but it loads something, it just doesn't render to the screen. And correct me if I'm wrong JesusXP, but this code looks exactly like lesson 4 from Yeldarb site
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Wil



Joined: 23 Feb 2005
Posts: 15
Location: Las Vegas
PostPosted: Thu Feb 09, 2006 2:15 pm    Post subject: Reply with quote
Uhm... wow. Try this.

Code:
/*   
   Program Name: Fuckin Around - Part Deux
   Author: Mark Pereira
   Date: Wed Feb 8, 1:19AM
*/

#include <pspdisplay.h>
#include <pspctrl.h>
#include <pspkernel.h>
#include <pspdebug.h>
#include <pspgu.h>
#include <png.h>
#include <stdio.h>
#include "graphics.h"

#define printf pspDebugScreenPrintf
#define MAX(X,Y) ((X)>(Y)?(X):(Y))

PSP_MODULE_INFO("Fuckin Around - Part Deux", 0, 1, 1);

/* Exit callback */
int exit_callback(int arg1, int arg2, void *common){
   sceKernelExitGame();
   return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp){
   int cbid;
   
   cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
   sceKernelRegisterExitCallback(cbid);
   
   sceKernelSleepThreadCB();
   
   return 0;
}
/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void){
   int thid = 0;
   
   thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
   if(thid >= 0){
      sceKernelStartThread(thid, 0, 0);
   }
   
   return thid;
}

int main(){

   SceCtrlData pad;
   Image* ourImage;
   int x = 0;
   int y = 0;
   
   pspDebugScreenInit();
   SetupCallbacks();
   initGraphics();

   ourImage = loadImage("meDude.png");

   while(1){
     
      sceCtrlReadBufferPositive(&pad, 1);

      if(pad.Buttons & PSP_CTRL_LEFT){
         if(x>0){x--;}
      }

      if(pad.Buttons & PSP_CTRL_RIGHT){
         if(x<480-32){x++;}
      }
         
      if(pad.Buttons & PSP_CTRL_UP){
         if(y>0){y--;}
      }
         
      if(pad.Buttons & PSP_CTRL_DOWN){
         if(y<272-32){y++;}
      }

      blitAlphaImageToScreen(0, 0, 32, 32, ourImage, x, y);
      flipScreen();
         
   }

   return 0;
}


*SHOULD* work -- see, you sent the image to the screen buffer and then entered an infinate loop. You never got to flipScreen() so it never displayed. Good luck.

Wil
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JesusXP



Joined: 17 Jan 2006
Posts: 80
Location: Ontario, Canada
PostPosted: Thu Feb 09, 2006 2:33 pm    Post subject: Reply with quote
I was on the irc room with Loco-san and we were able to get it working!!



This is the newly modified code, I really appreciate all the fast feedback, I used #pspdev on efnet as well though, and was able to get some real-time interaction and help. Thanks again though..


And you are correct, this is mostly made up of the code from Lesson 4


Code:


/*   
   Program Name: Fuckin Around - Part Deux
   Author: Mark Pereira
   Date: Wed Feb 8, 1:19AM
*/

#include <pspdisplay.h>
#include <pspctrl.h>
#include <pspkernel.h>
#include <pspdebug.h>
#include <pspgu.h>
#include <png.h>
#include <stdio.h>
#include "graphics.h"

#define printf pspDebugScreenPrintf
#define MAX(X,Y) ((X)>(Y)?(X):(Y))

PSP_MODULE_INFO("Fuckin Around - Part Deux", 0, 1, 1);

/* Exit callback */
int exit_callback(int arg1, int arg2, void *common){
   sceKernelExitGame();
   return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp){
   int cbid;
   
   cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
   sceKernelRegisterExitCallback(cbid);
   
   sceKernelSleepThreadCB();
   
   return 0;
}
/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void){
   int thid = 0;
   
   thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
   if(thid >= 0){
      sceKernelStartThread(thid, 0, 0);
   }
   
   return thid;
}

int main(){

   SceCtrlData pad;
   char buffer[200];
   Image* ourImage;
   
   pspDebugScreenInit();
   SetupCallbacks();
   initGraphics();
   
   sprintf(buffer, "meDude.png");
   ourImage = loadImage(buffer);
   
   if(!ourImage){
      //Image load failed
      printf("Image load failed!\n");
   }else{
      int x = 0;
      int y = 0;
      sceDisplayWaitVblankStart();
      
      while(1){
         clearScreen(0);
         blitAlphaImageToScreen(0, 0, 32, 32, ourImage, x, y);
         
         
         sceCtrlReadBufferPositive(&pad, 1);

         if(pad.Buttons & PSP_CTRL_LEFT){
            if(x>0){x--;}
         }

         if(pad.Buttons & PSP_CTRL_RIGHT){
            if(x<(480-32)){x++;}
         }
         
         if(pad.Buttons & PSP_CTRL_UP){
            if(y>0){y--;}
         }
         
         if(pad.Buttons & PSP_CTRL_DOWN){
            if(y<(272-32)){y++;}
         }
         sceDisplayWaitVblank();
         flipScreen();
      }   
   
   }
   
   sceKernelSleepThread();
   return 0;
}
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