+#else // TARGET_SDL
+
+ if (gfx.final_screen_bitmap == NULL)
+ gfx.final_screen_bitmap = CreateBitmapStruct();
+
+ gfx.final_screen_bitmap->width = width;
+ gfx.final_screen_bitmap->height = height;
+
+ gfx.final_screen_bitmap->surface =
+ SDL_SetVideoMode(width, height, video.depth, surface_flags);
+
+ if (gfx.final_screen_bitmap->surface != NULL)
+ {
+ new_surface =
+ SDL_CreateRGBSurface(surface_flags, width, height, video.depth, 0,0,0, 0);
+
+ if (new_surface == NULL)
+ Error(ERR_WARN, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
+
+#if 0
+ new_surface = gfx.final_screen_bitmap->surface;
+ gfx.final_screen_bitmap = NULL;
+#endif
+
+ }
+ else
+ {
+ Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError());
+ }
+#endif
+
+#if defined(TARGET_SDL2)
+ // store fullscreen state ("video.fullscreen_enabled" may not reflect this!)
+ if (new_surface != NULL)
+ fullscreen_enabled = fullscreen;
+#endif
+
+ if (backbuffer == NULL)
+ backbuffer = CreateBitmapStruct();
+
+ backbuffer->width = video.width;
+ backbuffer->height = video.height;
+
+ if (backbuffer->surface)
+ SDL_FreeSurface(backbuffer->surface);
+
+ backbuffer->surface = new_surface;
+
+ return (new_surface != NULL);
+}
+
+boolean SDLSetVideoMode(boolean fullscreen)
+{
+ boolean success = FALSE;
+
+ SetWindowTitle();
+
+ if (fullscreen && !video.fullscreen_enabled && video.fullscreen_available)
+ {
+ /* switch display to fullscreen mode, if available */
+ success = SDLCreateScreen(TRUE);
+
+ if (!success)
+ {
+ /* switching display to fullscreen mode failed -- do not try it again */
+ video.fullscreen_available = FALSE;
+ }
+ else
+ {
+ video.fullscreen_enabled = TRUE;
+ }
+ }
+
+ if ((!fullscreen && video.fullscreen_enabled) || !success)
+ {
+ /* switch display to window mode */
+ success = SDLCreateScreen(FALSE);
+
+ if (!success)
+ {
+ /* switching display to window mode failed -- should not happen */
+ }
+ else
+ {
+ video.fullscreen_enabled = FALSE;
+ video.window_scaling_percent = setup.window_scaling_percent;
+ video.window_scaling_quality = setup.window_scaling_quality;
+
+ SDLSetScreenRenderingMode(setup.screen_rendering_mode);
+ }
+ }
+
+#if defined(TARGET_SDL2)
+ SDLRedrawWindow(); // map window
+#endif
+
+#ifdef DEBUG
+#if defined(PLATFORM_WIN32)
+ // experimental drag and drop code
+
+ SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
+
+ {
+ SDL_SysWMinfo wminfo;
+ HWND hwnd;
+ boolean wminfo_success = FALSE;
+
+ SDL_VERSION(&wminfo.version);
+#if defined(TARGET_SDL2)
+ if (sdl_window)
+ wminfo_success = SDL_GetWindowWMInfo(sdl_window, &wminfo);