(Termuxo Sdl rendering simple message box but not created window

SDL Development
1

So I’m following Handmade Hero purely off my phone during downtime and basing off of handmade penguin’s adaptation over to linux.

I get execution properly blocking the console on the simple message box dialog, and it renders in termux x11 if i move the mouse over to its location in the x11 app, but I’m never able to see the window render directly after.

❯ ./out/handmade
INFO: Starting application with verbose logging...
DEBUG: Couldn't load font -*-*-medium-r-normal--*-120-*-*-*-*-*-*
DEBUG: That operation is not supported
INFO: OpenGL shaders: ENABLED
INFO: Created renderer: opengl
INFO: Created renderer: software

No clue about the font issue, is that possibly the cause? The last 4 log entries happen directly after the SDL renderer gets called in

Source:

int main(int argc, char *argv[]) {
  SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
  SDL_SetHint(SDL_HINT_WINDOWS_DISABLE_THREAD_NAMING, "1");
  SDL_Log("Starting application with verbose logging...");
                                                                        SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_INFORMATION, "Hello", "Hello
, World!", 0);

  bool sdlInitialised = SDL_Init(SDL_INIT_VIDEO) == 0;
  if (!sdlInitialised) {                                                  SDL_Log("Failed SDL Init %s\n", SDL_GetError());
    return Quit();
  }

  SDL_Window *Window =
      SDL_CreateWindow("Handmade",
          0, 0, 320, 480,
          SDL_WINDOW_RESIZABLE);

  if (!Window) {
    SDL_Log("Post Window SDL Error: %s\n", SDL_GetError());
    return Quit();
  }

  SDL_Renderer *Renderer = SDL_CreateRenderer(Window, -1, SDL_RENDERER
_SOFTWARE);

  if (!Renderer) {
    SDL_Log("Post Renderer SDL Error: %s\n", SDL_GetError());
    return Quit();
  }

  for(;;)
  {
    SDL_Event Event;
    SDL_WaitEvent(&Event);
    if (HandleEvent(&Event))
    {
        break;
    }
  }
}

I’ll try pasting the link to repo but I don’t trust my phone not to lose this writeup while I hunt around for it.

Actual source: Handmade/code/sdl_handmade.cpp at b4ead74f07824e579eedecec929a6684598beb34 · BenVella/Handmade · GitHub

2

Please add RenderPresent() and RenderClear() in your function HandleWindowEvent() like the following code:

bool HandleWindowEvent(SDL_WindowEvent *winEvent) {
  switch (winEvent->event) {
    case SDL_WINDOWEVENT_RESIZED: {
      printf("SDL_WINDOWEVENT_RESIZED (%d, %d)\n", winEvent->data1, winEvent->data2);
    } break;
    case SDL_WINDOWEVENT_EXPOSED:
    {
      SDL_Window *Window = SDL_GetWindowFromID(winEvent->windowID);
      SDL_Renderer *Renderer = SDL_GetRenderer(Window);
      static bool IsWhite = true;
      if (IsWhite)
      {
        SDL_SetRenderDrawColor(Renderer, 0, 255, 0, 255);
      }
      else
      {
        SDL_SetRenderDrawColor(Renderer, 255, 0, 0, 255);
      }
      SDL_RenderPresent(Renderer); // add this
      SDL_RenderClear(Renderer); // two lines
      IsWhite = !IsWhite;
    } break;

  }
  return false;
}
1 Like
3

Thanks! That worked to render without issue! It looks like the font and unsupported platform error do persist and I have no way of resizing the resizable window since it just doesn’t show anything besides the rendered colors, but that’s not such a big deal