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Updated program illustrating the bug

main2.c (text/x-csrc), 1.63 KB, created by Andreas Löf on 2015-12-02 09:01:38 UTC

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Description:

Filename:

MIME Type:

Creator: Andreas Löf

Created: 2015-12-02 09:01:38 UTC

Size: 1.63 KB

patch

obsolete

>#include <stdio.h>
>#include <SDL2/SDL.h>
>#include <SDL2/SDL_image.h>
>
>#define WIDTH 800
>#define HEIGHT 600
>#define IMG_PATH "ghost.png"
>
>int main (int argc, char *argv[]) {
>
>  SDL_Window *win = NULL;
>  SDL_Surface *img = NULL;
>  SDL_Surface *copy;
>  SDL_Rect src;
>  SDL_Rect dst;
>
>  if (SDL_Init(SDL_INIT_VIDEO) < 0)
>    exit(1);
>
>  int imgFlags = IMG_INIT_PNG;
>  if( !( IMG_Init( imgFlags ) & imgFlags ) ) {
>    printf( "SDL_image could not initialize! SDL_image Error: %s\n", IMG_GetError() );
>    exit(1);
>  }
>
>  win = SDL_CreateWindow("Image Loading", 0, 0, WIDTH, HEIGHT, 0);
>	
>  // load our image
>  img = IMG_Load(IMG_PATH);
>  if (!img) {
>    printf("failed to load image\n");
>    exit(1);
>  }
>
>  
>  /* set up the basic pattern */
>  for (int i = 0; i < 4; i++) {
>    for (int j = 0; j < 4; j++) {
>      dst.x = 172*i;
>      dst.y = 176*j;
>      dst.w = 172;
>      dst.h = 176;
>
>      SDL_BlitSurface(img, NULL, SDL_GetWindowSurface(win), &dst);
>    }
>  }
>
>  /* this is where things fail */
>  src.x = 0;
>  src.y = 50;
>  src.w = WIDTH;
>  src.h = HEIGHT;
>
>  dst = src;
>  dst.y = 100;
>
>#ifdef WORKING
>   copy = SDL_ConvertSurface(SDL_GetWindowSurface(win),
>			    SDL_GetWindowSurface(win)->format,
>			    0);
>  SDL_BlitSurface(copy, &src, SDL_GetWindowSurface(win), &dst);
>#else
>  int r = SDL_BlitSurface(SDL_GetWindowSurface(win), &src, SDL_GetWindowSurface(win), &dst);
>  if (r) {
>    printf("Blitting failed!\n");
>  }
>#endif
>
>  /* verify that dst has been altered as expected */
>  printf("x,y,w,h: %d,%d,%d,%d\n",dst.x, dst.y, dst.w, dst.h);
>
>  SDL_UpdateWindowSurface(win);
>  SDL_Delay(2000);
>  SDL_FreeSurface(img);
>  SDL_DestroyWindow(win);
>	
>  return 0;
>}

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Attachments on bug 3096: 2242 | 2243 | 2244 | 2318 | 2319 | 2581

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.