kc3-lang/SDL/Xcode-iOS/Template/SDL iOS Application/main.c

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• Hash : 0e45984f
  Author :
  Date : 2015-06-21T17:33:46
  

  Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().

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• Xcode-iOS/Template/SDL iOS Application/main.c

• /*
   *  rectangles.c
   *  written by Holmes Futrell
   *  use however you want
   */
  
  #include "SDL.h"
  #include <time.h>
  
  #define SCREEN_WIDTH 320
  #define SCREEN_HEIGHT 480
  
  int
  randomInt(int min, int max)
  {
      return min + rand() % (max - min + 1);
  }
  
  void
  render(SDL_Renderer *renderer)
  {
  
      Uint8 r, g, b;
  
      /* Clear the screen */
      SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
      SDL_RenderClear(renderer);
  
      /*  Come up with a random rectangle */
      SDL_Rect rect;
      rect.w = randomInt(64, 128);
      rect.h = randomInt(64, 128);
      rect.x = randomInt(0, SCREEN_WIDTH);
      rect.y = randomInt(0, SCREEN_HEIGHT);
  
      /* Come up with a random color */
      r = randomInt(50, 255);
      g = randomInt(50, 255);
      b = randomInt(50, 255);
      SDL_SetRenderDrawColor(renderer, r, g, b, 255);
  
      /*  Fill the rectangle in the color */
      SDL_RenderFillRect(renderer, &rect);
  
      /* update screen */
      SDL_RenderPresent(renderer);
  }
  
  int
  main(int argc, char *argv[])
  {
  
      SDL_Window *window;
      SDL_Renderer *renderer;
      int done;
      SDL_Event event;
  
      /* initialize SDL */
      if (SDL_Init(SDL_INIT_VIDEO) < 0) {
          printf("Could not initialize SDL\n");
          return 1;
      }
  
      /* seed random number generator */
      srand(time(NULL));
  
      /* create window and renderer */
      window =
          SDL_CreateWindow(NULL, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT,
                           SDL_WINDOW_OPENGL);
      if (!window) {
          printf("Could not initialize Window\n");
          return 1;
      }
  
      renderer = SDL_CreateRenderer(window, -1, 0);
      if (!renderer) {
          printf("Could not create renderer\n");
          return 1;
      }
  
      /* Enter render loop, waiting for user to quit */
      done = 0;
      while (!done) {
          while (SDL_PollEvent(&event)) {
              if (event.type == SDL_QUIT) {
                  done = 1;
              }
          }
          render(renderer);
          SDL_Delay(1);
      }
  
      /* shutdown SDL */
      SDL_Quit();
  
      return 0;
  }
  

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