2 files changed, 12 insertions, 3 deletions
diff --git a/components/script/dom/webidls/XRInputSource.webidl b/components/script/dom/webidls/XRInputSource.webidl
index 51efc645282..f07de183927 100644
--- a/components/script/dom/webidls/XRInputSource.webidl
+++ b/components/script/dom/webidls/XRInputSource.webidl
@@ -19,7 +19,7 @@ enum XRTargetRayMode {
 [SecureContext, Exposed=Window, Pref="dom.webxr.enabled"]
 interface XRInputSource {
   readonly attribute XRHandedness handedness;
-  // [SameObject] readonly attribute XRTargetRayMode targetRayMode;
+  readonly attribute XRTargetRayMode targetRayMode;
   [SameObject] readonly attribute XRSpace targetRaySpace;
   [SameObject] readonly attribute XRSpace? gripSpace;
   // [SameObject] readonly attribute Gamepad? gamepad;
diff --git a/components/script/dom/xrinputsource.rs b/components/script/dom/xrinputsource.rs
index d24e328d361..fed76937d9c 100644
--- a/components/script/dom/xrinputsource.rs
+++ b/components/script/dom/xrinputsource.rs
@@ -4,7 +4,7 @@
 
 use crate::dom::bindings::codegen::Bindings::XRInputSourceBinding;
 use crate::dom::bindings::codegen::Bindings::XRInputSourceBinding::{
-    XRHandedness, XRInputSourceMethods,
+    XRHandedness, XRInputSourceMethods, XRTargetRayMode,
 };
 use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
 use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
@@ -12,7 +12,7 @@ use crate::dom::globalscope::GlobalScope;
 use crate::dom::xrsession::XRSession;
 use crate::dom::xrspace::XRSpace;
 use dom_struct::dom_struct;
-use webxr_api::{Handedness, InputId, InputSource};
+use webxr_api::{Handedness, InputId, InputSource, TargetRayMode};
 
 #[dom_struct]
 pub struct XRInputSource {
@@ -64,6 +64,15 @@ impl XRInputSourceMethods for XRInputSource {
         }
     }
 
+    /// https://immersive-web.github.io/webxr/#dom-xrinputsource-targetraymode
+    fn TargetRayMode(&self) -> XRTargetRayMode {
+        match self.info.target_ray_mode {
+            TargetRayMode::Gaze => XRTargetRayMode::Gaze,
+            TargetRayMode::TrackedPointer => XRTargetRayMode::Tracked_pointer,
+            TargetRayMode::Screen => XRTargetRayMode::Screen,
+        }
+    }
+
     /// https://immersive-web.github.io/webxr/#dom-xrinputsource-targetrayspace
     fn TargetRaySpace(&self) -> DomRoot<XRSpace> {
         self.target_ray_space.or_init(|| {