add compatibility for both pipelined and unpipelined

crates/bevy_openxr/src/openxr/init.rs

@@ -150,9 +150,9 @@ impl Plugin for OxrInitPlugin {
                 .insert_non_send_resource(session_create_info)
                 .configure_sets(OxrLast, OxrHandleEvents);
 
-                // app.world
-                //     .resource_mut::<MainScheduleOrder>()
-                //     .insert_after(Last, OxrLast);
+                app.world
+                    .resource_mut::<MainScheduleOrder>()
+                    .insert_after(Last, OxrLast);
 
                 app.world
                     .spawn((TransformBundle::default(), OxrTrackingRoot));

crates/bevy_openxr/src/openxr/render.rs

@@ -1,5 +1,5 @@
 use bevy::{
-    app::SubApp,
+    app::{MainScheduleOrder, SubApp},
     ecs::{query::QuerySingleError, schedule::MainThreadExecutor},
     prelude::*,
     render::{
@@ -33,6 +33,16 @@ impl Plugin for OxrRenderPlugin {
         if app.is_plugin_added::<PipelinedRenderingPlugin>() {
             app.init_resource::<Pipelined>();
 
+            let mut schedule_order = app.world.resource_mut::<MainScheduleOrder>();
+
+            if let Some(pos) = schedule_order
+                .labels
+                .iter()
+                .position(|label| (**label).eq(&OxrLast))
+            {
+                schedule_order.labels.remove(pos);
+            }
+
             if let Some(sub_app) = app.remove_sub_app(RenderExtractApp) {
                 app.insert_sub_app(RenderExtractApp, SubApp::new(sub_app.app, update_rendering));
             }