Refine OpenXR backend formatting

src/wlr/backend.cpp

@@ -1,60 +1,20 @@
-#include <stdlib.h>
+#include "openxr_gl.h"
 
 extern "C" {
 #include <wayland-server-core.h>
-#include <wlr/backend/interface.h>
-#include <wlr/util/log.h>
 }
 
-struct my_backend {
-	struct wlr_backend base;
-	// TODO: any backend‐specific fields
-};
-
 extern "C" {
 
-static bool backend_start(struct wlr_backend* backend)
-{
-	(void)backend;
-	// TODO: start event loops, create outputs, inputs, etc.
-	return true;
-}
-
-static void backend_destroy(struct wlr_backend* backend)
-{
-	(void)backend;
-	// TODO: destroy outputs, free everything
-}
-
-static int backend_get_drm_fd(struct wlr_backend* backend)
-{
-	(void)backend;
-	// TODO: return drm FD or -1
-	return -1;
-}
-
-static const struct wlr_backend_impl backend_impl = {
-	.start = backend_start,
-	.destroy = backend_destroy,
-	.get_drm_fd = backend_get_drm_fd,
-};
-
 struct wlr_backend* wlr_my_backend_create(
     struct wl_event_loop* loop, char const* name)
 {
-	(void)loop;
 	(void)name;
-	struct my_backend* b = (struct my_backend*)calloc(1, sizeof(*b));
-	if (!b) {
-		return NULL;
-	}
-	wlr_backend_init(&b->base, &backend_impl);
-	// TODO: store loop/name, setup
-	return &b->base;
+	return wlr_openxr_backend_create(nullptr, loop);
 }
 
 bool wlr_backend_is_mybackend(struct wlr_backend* backend)
 {
-	return backend->impl == &backend_impl;
+	return wlr_backend_is_openxr(backend);
 }
 }