x11: Set EGL surface for foreign X11 windows.

Cherry-picked by hand from SDL2: 780ec8fac062deaee5a018823e33f33c727738bc

Also cleaned up the XDestroyIC cleanup code to match the setup code.

Fixes #11996.

src/video/x11/SDL_x11keyboard.c

@@ -766,6 +766,18 @@ void X11_CreateInputContext(SDL_WindowData *data)
 #endif // X_HAVE_UTF8_STRING
 }
 
+
+void X11_DestroyInputContext(SDL_WindowData *data)
+{
+#ifdef X_HAVE_UTF8_STRING
+    X11_XDestroyIC(data->ic);
+    SDL_free(data->preedit_text);
+    SDL_free(data->preedit_feedback);
+    data->preedit_text = NULL;
+    data->preedit_feedback = NULL;
+#endif
+}
+
 static void X11_ResetXIM(SDL_VideoDevice *_this, SDL_Window *window)
 {
 #ifdef X_HAVE_UTF8_STRING

src/video/x11/SDL_x11keyboard.h

@@ -27,6 +27,7 @@ extern bool X11_InitKeyboard(SDL_VideoDevice *_this);
 extern void X11_UpdateKeymap(SDL_VideoDevice *_this, bool send_event);
 extern void X11_QuitKeyboard(SDL_VideoDevice *_this);
 extern void X11_CreateInputContext(SDL_WindowData *data);
+extern void X11_DestroyInputContext(SDL_WindowData *data);
 extern void X11_ClearComposition(SDL_WindowData *data);
 extern bool X11_StartTextInput(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID props);
 extern bool X11_StopTextInput(SDL_VideoDevice *_this, SDL_Window *window);

src/video/x11/SDL_x11window.c

@@ -398,8 +398,7 @@ static bool SetupWindowData(SDL_VideoDevice *_this, SDL_Window *window, Window w
     } else {
         SDL_WindowData ** new_windowlist = (SDL_WindowData **)SDL_realloc(windowlist, (numwindows + 1) * sizeof(*windowlist));
         if (!new_windowlist) {
-            SDL_free(data);
-            return false;
+            goto error_cleanup;
         }
         windowlist = new_windowlist;
         windowlist[numwindows] = data;
@@ -458,9 +457,42 @@ static bool SetupWindowData(SDL_VideoDevice *_this, SDL_Window *window, Window w
     SDL_SetNumberProperty(props, SDL_PROP_WINDOW_X11_SCREEN_NUMBER, screen);
     SDL_SetNumberProperty(props, SDL_PROP_WINDOW_X11_WINDOW_NUMBER, data->xwindow);
 
+
+#if defined(SDL_VIDEO_OPENGL_ES) || defined(SDL_VIDEO_OPENGL_ES2) || defined(SDL_VIDEO_OPENGL_EGL)
+    if ((window->flags & SDL_WINDOW_OPENGL) &&
+        ((_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) ||
+         SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, false))
+#ifdef SDL_VIDEO_OPENGL_GLX
+        && (!_this->gl_data || X11_GL_UseEGL(_this))
+#endif
+    ) {
+#ifdef SDL_VIDEO_OPENGL_EGL
+        if (!_this->egl_data) {
+            goto error_cleanup;
+        }
+
+        // Create the GLES window surface
+        data->egl_surface = SDL_EGL_CreateSurface(_this, window, (NativeWindowType)w);
+
+        if (data->egl_surface == EGL_NO_SURFACE) {
+            SDL_SetError("Could not create GLES window surface");
+            goto error_cleanup;
+        }
+#else
+        SDL_SetError("Could not create GLES window surface (EGL support not configured)");
+        goto error_cleanup;
+#endif // SDL_VIDEO_OPENGL_EGL
+    }
+#endif
+
     // All done!
     window->internal = data;
     return true;
+
+error_cleanup:
+    X11_DestroyInputContext(data);
+    SDL_free(data);
+    return false;
 }
 
 static void SetupWindowInput(SDL_VideoDevice *_this, SDL_Window *window)
@@ -858,31 +890,6 @@ bool X11_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_Properties
     }
 #endif /* SDL_VIDEO_DRIVER_X11_XSYNC */
 
-#if defined(SDL_VIDEO_OPENGL_ES) || defined(SDL_VIDEO_OPENGL_ES2) || defined(SDL_VIDEO_OPENGL_EGL)
-    if ((window->flags & SDL_WINDOW_OPENGL) &&
-        ((_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) ||
-         SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, false))
-#ifdef SDL_VIDEO_OPENGL_GLX
-        && (!_this->gl_data || X11_GL_UseEGL(_this))
-#endif
-    ) {
-#ifdef SDL_VIDEO_OPENGL_EGL
-        if (!_this->egl_data) {
-            return false;
-        }
-
-        // Create the GLES window surface
-        windowdata->egl_surface = SDL_EGL_CreateSurface(_this, window, (NativeWindowType)w);
-
-        if (windowdata->egl_surface == EGL_NO_SURFACE) {
-            return SDL_SetError("Could not create GLES window surface");
-        }
-#else
-        return SDL_SetError("Could not create GLES window surface (EGL support not configured)");
-#endif // SDL_VIDEO_OPENGL_EGL
-    }
-#endif
-
 #ifdef SDL_VIDEO_DRIVER_X11_XSHAPE
     // Tooltips do not receive input
     if (window->flags & SDL_WINDOW_TOOLTIP) {
@@ -2180,13 +2187,8 @@ void X11_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window)
                 }
             }
         }
-#ifdef X_HAVE_UTF8_STRING
-        if (data->ic) {
-            X11_XDestroyIC(data->ic);
-            SDL_free(data->preedit_text);
-            SDL_free(data->preedit_feedback);
-        }
-#endif
+
+        X11_DestroyInputContext(data);
 
 #ifdef SDL_VIDEO_DRIVER_X11_XSYNC
         X11_TermResizeSync(window);