Method Init

renderer/lnxscreenmode.cpp:115–187

enumerate all the possible video modes

// enumerate all the possible video modes
bool CLnxVideoModes::Init(void) // Display *dpy,int screen)
{
#if 0  // with SDL2, we'll just use FULLSCREEN_DESKTOP and never change the physical vidmode
  if (m_Inited)
    return true;

  //	m_Display = dpy;
  //	m_Screen = screen;
  m_NumVideoModes = 0;
  m_ModeInfoList = NULL;
  m_Inited = true;
  sdlflags = 0;
  /*
          if(!LoadLibraries())
          {
                  m_Inited = false;
                  fprintf(stdout,"LoadLib: Unable to load VideoMode libraries\n");
                  return false;
          }

          int dummy;
          if(!VidModeQueryExtension(dpy,&dummy,&dummy))
                  return false;

          if(!VidModeGetAllModeLines(m_Display,m_Screen,&m_NumVideoModes,&m_ModeInfoList))
          {
                  m_NumVideoModes = 0;
          }else
          {
  */

  const SDL_VideoInfo *vidInfo = NULL;

  sdlflags = SDL_HWSURFACE | SDL_FULLSCREEN;
  sdlflags = SDL_OPENGL | SDL_FULLSCREEN;
  if (FindArgChar("-windowed", 'w'))
    sdlflags &= ~SDL_FULLSCREEN;

  vidInfo = SDL_GetVideoInfo();

  m_ModeInfoList = SDL_ListModes(vidInfo->vfmt, sdlflags);
  if (m_ModeInfoList == NULL) {
    sdlflags &= ~SDL_FULLSCREEN;
    m_ModeInfoList = SDL_ListModes(vidInfo->vfmt, sdlflags); // try without fullscreen.
    if (m_ModeInfoList == NULL) {
      sdlflags = 0;
      m_ModeInfoList = SDL_ListModes(vidInfo->vfmt, sdlflags); // give me ANYTHING.
      if (m_ModeInfoList == NULL) {
        fprintf(stderr, "SDL: SDL_ListModes() failed.\n");
        return -3;
      } // if
    }   // if
  }     // if

  if (m_ModeInfoList == (SDL_Rect **)-1) // anything is fine.
  {
    mprintf(0, "Windowed surface is probably going to be used.");
    m_NumVideoModes = 0;