Only use hack on X when in windowed mode.

gfx/gfx_common.c

@@ -116,17 +116,9 @@ void gfx_set_dwm(void)
 #include "SDL_syswm.h"
 #include "SDL.h"
 
+#if !defined(__APPLE__) && !defined(_WIN32)
 void gfx_get_window_size(unsigned *width, unsigned *height)
 {
-#if defined(__APPLE__) || defined(_WIN32)
-   SDL_Event evnt;
-   while (SDL_PollEvent(&evnt));
-   const SDL_VideoInfo *info = SDL_GetVideoInfo();
-   *width = info->current_w;
-   *height = info->current_h;
-#else
-   // It seems that we need to go hardcore to get the actual
-   // window sizes properly right after startup ... :D
    SDL_SysWMinfo info;
    SDL_VERSION(&info.version);
    SDL_GetWMInfo(&info);
@@ -138,6 +130,5 @@ void gfx_get_window_size(unsigned *width, unsigned *height)
 
    *width = target.width;
    *height = target.height;
-#endif
 }
-
+#endif

gfx/gfx_common.h

@@ -28,6 +28,8 @@ void gfx_window_title_reset(void);
 void gfx_set_dwm(void);
 #endif
 
+#if !defined(__APPLE__) && !defined(_WIN32)
 void gfx_get_window_size(unsigned *width, unsigned *height);
+#endif
 
 #endif

gfx/gl.c

@@ -147,6 +147,7 @@ typedef struct gl
 
    bool should_resize;
    bool quitting;
+   bool fullscreen;
    bool keep_aspect;
 
    unsigned full_x, full_y;
@@ -706,7 +707,9 @@ static void check_window(gl_t *gl)
       }
    }
 
-   if (!gl->should_resize)
+#if !defined(__APPLE__) && !defined(_WIN32)
+   // Hack to workaround limitations in tiling WMs ...
+   if (!gl->should_resize && !gl->fullscreen)
    {
       unsigned new_width, new_height;
       gfx_get_window_size(&new_width, &new_height);
@@ -718,6 +721,7 @@ static void check_window(gl_t *gl)
          SSNES_LOG("GL: Verified window size: %u x %u\n", gl->win_width, gl->win_height);
       }
    }
+#endif
 }
 
 static bool gl_frame(void *data, const void* frame, unsigned width, unsigned height, unsigned pitch, const char *msg)
@@ -1095,6 +1099,7 @@ static void* gl_init(const video_info_t *video, const input_driver_t **input, vo
    }
 
    gl->vsync = video->vsync;
+   gl->fullscreen = video->fullscreen;
    int attr = 0;
    SDL_GL_GetAttribute(SDL_GL_SWAP_CONTROL, &attr);
    if (attr <= 0 && video->vsync)