Add wl_subcompositor support

src/wl_init.c

@@ -527,6 +527,11 @@ static void registryHandleGlobal(void* data,
             wl_registry_bind(registry, name, &wl_compositor_interface,
                              _glfw.wl.compositorVersion);
     }
+    else if (strcmp(interface, "wl_subcompositor") == 0)
+    {
+        _glfw.wl.subcompositor =
+            wl_registry_bind(registry, name, &wl_subcompositor_interface, 1);
+    }
     else if (strcmp(interface, "wl_shm") == 0)
     {
         _glfw.wl.shm =

src/wl_platform.h

@@ -192,6 +192,7 @@ typedef struct _GLFWlibraryWayland
     struct wl_display*          display;
     struct wl_registry*         registry;
     struct wl_compositor*       compositor;
+    struct wl_subcompositor*    subcompositor;
     struct wl_shell*            shell;
     struct wl_shm*              shm;
     struct wl_seat*             seat;