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Test program demonstrating the problem, written in C99

sdlbug.c (text/x-csrc), 3.81 KB, created by Solra Bizna on 2015-12-03 22:32:46 UTC

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Description:

Filename:

MIME Type:

Creator: Solra Bizna

Created: 2015-12-03 22:32:46 UTC

Size: 3.81 KB

patch

obsolete

>#include "SDL.h"
>
>static int do_it(SDL_Window* window, SDL_Renderer* renderer, SDL_Texture* tex,
>                 Uint8 r, Uint8 g, Uint8 b, int w, int h,
>                 const char* title) {
>  SDL_SetWindowSize(window, w, h);
>  SDL_SetWindowTitle(window, title);
>  void* locked; int pitch;
>  SDL_LockTexture(tex, NULL, &locked, &pitch);
>  if(!locked) {
>    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>                             "Something went wrong",
>                             SDL_GetError(), NULL);
>    return;
>  }
>  Uint32* p = (Uint32*)locked;
>  for(int x = 1; x <= 4; ++x) {
>    *p++ = ((Uint32)(r*x/4) << 16) | ((Uint32)(g*x/4) << 8) | (b*x/4);
>  }
>  SDL_UnlockTexture(tex);
>  SDL_RenderClear(renderer);
>  SDL_RenderCopy(renderer, tex, NULL, NULL);
>  SDL_RenderPresent(renderer);
>  printf("Displayed: %s\n", title);
>  SDL_Event evt;
>  while(SDL_WaitEvent(&evt)) {
>#if 0
>    if(evt.type == SDL_WINDOWEVENT
>       && evt.window.event == SDL_WINDOWEVENT_EXPOSED) {
>      printf("  Exposed!\n");
>      SDL_RenderClear(renderer);
>      SDL_RenderCopy(renderer, tex, NULL, NULL);
>      SDL_RenderPresent(renderer);
>    }
>#endif
>    switch(evt.type) {
>    case SDL_KEYDOWN:
>      if(evt.key.repeat) break;
>      if(evt.key.keysym.sym == SDLK_SPACE)
>        return 0;
>      else if(evt.key.keysym.sym == SDLK_ESCAPE)
>        return 1;
>      break;
>    case SDL_QUIT:
>      return 1;
>    }
>  }
>}
>
>int main(int argc, char* argv[]) {
>  if(SDL_Init(SDL_INIT_VIDEO)) {
>    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>                       "Couldn't initialize SDL",
>                       SDL_GetError(), NULL);
>    return 1;
>  }
>  atexit(SDL_Quit);
>  SDL_Window* window = SDL_CreateWindow("Bug Test",
>                                        SDL_WINDOWPOS_UNDEFINED,
>                                        SDL_WINDOWPOS_UNDEFINED,
>                                        720, 480, 0);
>  if(window == NULL) {
>    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>                             "Couldn't create window",
>                             SDL_GetError(), NULL);
>    return 1;
>  }
>  SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, 0);
>  if(renderer == NULL) {
>    SDL_DestroyWindow(window);
>    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>                             "Couldn't create renderer",
>                             SDL_GetError(), NULL);
>    return 1;
>  }
>  SDL_RendererInfo info;
>  if(SDL_GetRendererInfo(renderer, &info))
>    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_WARNING,
>                             "Couldn't get renderer info",
>                             SDL_GetError(), NULL);
>  else {
>    printf("Renderer: \"%s\"\n", info.name);
>    printf("Supported flags: %08X\n", info.flags);
>  }
>  SDL_Texture* tex = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB888,
>                                       SDL_TEXTUREACCESS_STREAMING,
>                                       2, 2);
>  if(!tex) {
>    SDL_DestroyRenderer(renderer);
>    SDL_DestroyWindow(window);
>    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
>                             "Couldn't create 2x2 texture",
>                             SDL_GetError(), NULL);
>    return 1;
>  }
>  do {
>    if(do_it(window, renderer, tex, 0xFF, 0x00, 0x00, 720, 480,
>             "Starting size, red (working first time, bugged after)")) break;
>    if(do_it(window, renderer, tex, 0x00, 0xFF, 0x00, 800, 480,
>             "Grow in X, green (bugged)")) break;
>    if(do_it(window, renderer, tex, 0xFF, 0xFF, 0x00, 800, 540,
>             "Grow in Y, yellow (bugged)")) break;
>    if(do_it(window, renderer, tex, 0x00, 0xFF, 0xFF, 832, 600,
>             "Grow in both, cyan (bugged)")) break;
>    if(do_it(window, renderer, tex, 0x00, 0x00, 0xFF, 512, 384,
>             "Shrink in both, blue (bugged)")) break;
>  } while(1);
>  SDL_DestroyTexture(tex);
>  SDL_DestroyRenderer(renderer);
>  SDL_DestroyWindow(window);
>  return 0;
>}

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Attachments on bug 3198: 2326

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.