desktop-avatar: report content bounds for the rear depth budget

samples/desktop-avatar/Assets/TransparentAutoSetup.cs

@@ -93,6 +93,27 @@ private static void Install()
 
         Renderer[] hit = hitList.Count > 0 ? hitList.ToArray() : null;
 
+        // Rear depth budget (XR_DXR_depth_budget v2): tell the runtime WHERE the
+        // content is, so it decides whether the avatar may show its back from the
+        // desktop BEHIND THE AVATAR rather than from the whole window. Without this
+        // an empty Notepad's own menu and status bars are enough horizontal structure
+        // to keep the clip shut while the tiger is in the opposite corner.
+        //
+        // The renderer list is pinned to exactly the silhouette targets above, so the
+        // measured region is the same geometry the click-through mask is cut from.
+        // One component only — native tracks a single region — so it goes on the
+        // first target root and covers the rest through the explicit list.
+        if (targetRoots.Count > 0 && hit != null)
+        {
+            var host = targetRoots[0];
+            var bounds = host.GetComponent<DisplayXRContentBounds>();
+            if (bounds == null) bounds = host.AddComponent<DisplayXRContentBounds>();
+            bounds.renderers = hit;
+            Debug.Log($"[TransparentAutoSetup] Content bounds reported from '{host.name}' " +
+                      $"({hit.Length} renderer(s)) — the rear depth budget is judged from " +
+                      "the desktop behind the content.");
+        }
+
         int installed = 0;
         foreach (var cam in Camera.allCameras)
         {

samples/desktop-avatar/Packages/manifest.json

@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.14.0",
+    "com.displayxr.unity": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.19.0",
     "com.unity.multiplayer.center": "1.0.1",
     "com.unity.render-pipelines.universal": "17.0.4",
     "com.unity.ugui": "2.0.0",

samples/desktop-avatar/Packages/packages-lock.json

@@ -1,5 +1,15 @@
 {
   "dependencies": {
+    "com.displayxr.unity": {
+      "version": "https://github.com/DisplayXR/displayxr-unity.git#upm/v2.19.0",
+      "depth": 0,
+      "source": "git",
+      "dependencies": {
+        "com.unity.xr.management": "4.4.0",
+        "com.unity.inputsystem": "1.4.4"
+      },
+      "hash": "08ec4412cebbbc08397a6aaf543ba4a7dd802d99"
+    },
     "com.unity.burst": {
       "version": "1.8.28",
       "depth": 2,