Fullscreen mode is fixed on OS X

src/gui/sdlmain.cpp

@@ -488,12 +488,21 @@ static SDL_Window * GFX_SetSDLWindowMode(Bit16u width, Bit16u height, bool fulls
 		if (sdl.window) {
 			SDL_DestroyWindow(sdl.window);
 		}
+#if defined(MACOSX)
+		sdl.window = SDL_CreateWindow("",
+		                 SDL_WINDOWPOS_UNDEFINED_DISPLAY(sdl.displayNumber),
+		                 SDL_WINDOWPOS_UNDEFINED_DISPLAY(sdl.displayNumber),
+		                 width, height,
+		                 (fullscreen ? SDL_WINDOW_FULLSCREEN : 0)
+		                 | ((screenType == SCREEN_OPENGL) ? SDL_WINDOW_OPENGL : 0) | SDL_WINDOW_SHOWN);
+#else
 		sdl.window = SDL_CreateWindow("",
 		                 SDL_WINDOWPOS_UNDEFINED_DISPLAY(sdl.displayNumber),
 		                 SDL_WINDOWPOS_UNDEFINED_DISPLAY(sdl.displayNumber),
 		                 width, height,
 		                 (fullscreen ? (sdl.desktop.full.display_res ? SDL_WINDOW_FULLSCREEN_DESKTOP : SDL_WINDOW_FULLSCREEN) : 0)
 		                 | ((screenType == SCREEN_OPENGL) ? SDL_WINDOW_OPENGL : 0) | SDL_WINDOW_SHOWN);
+#endif
 		if (sdl.window)
 			GFX_SetTitle(-1,-1,false); //refresh title.
 		SDL_GetWindowSize(sdl.window, &currWidth, &currHeight);
@@ -515,7 +524,12 @@ static SDL_Window * GFX_SetSDLWindowMode(Bit16u width, Bit16u height, bool fulls
 		displayMode.h = height;
 		SDL_SetWindowDisplayMode(sdl.window, &displayMode);
 
+#if defined(MACOSX)
+		SDL_SetWindowFullscreen(sdl.window, SDL_WINDOW_FULLSCREEN);
+#else
 		SDL_SetWindowFullscreen(sdl.window, SDL_WINDOW_FULLSCREEN_DESKTOP);
+#endif
+
 	} else {
 		SDL_SetWindowFullscreen(sdl.window, 0);