dumpRendererPicture.cpp

switch (event.type)
{
    case SDL_KEYDOWN:
        if (event.key.keysym.scancode == SDL_SCANCODE_S)
        {
            SDL_Surface* screenShot = SDL_CreateRGBSurface(0, 800, 600, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000);
            if (screenShot)
            {
                SDL_RenderReadPixels(renderer, NULL, SDL_GetWindowPixelFormat(window), screenShot->pixels, screenShot->pitch);
                SDL_SaveBMP(screenShot, "map.bmp");
                SDL_FreeSurface(screenShot);
            }
        }
    case SDL_QUIT:
        break;
    default:
        break;
}