From 73bd249b7aed31ce51fbbe415595b6a5876bc43b Mon Sep 17 00:00:00 2001
From: Manish Goregaokar <manishsmail@gmail.com>
Date: Wed, 12 Jun 2019 11:12:57 -0700
Subject: [PATCH] Add test for origin offset

---
 tests/wpt/mozilla/meta/MANIFEST.json                 |  4 ++--
 tests/wpt/mozilla/tests/webxr/obtain_frame.html      | 12 +++++++++++-
 .../wpt/mozilla/tests/webxr/resources/webxr-util.js  |  2 +-
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 3d4a6d425b0..834c45da73d 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -19687,11 +19687,11 @@
    "testharness"
   ],
   "webxr/obtain_frame.html": [
-   "f1edfc4d70a2125a44748b378a40b6855f79cc62",
+   "d3c7d85c6cc6fcb65e674e8aeeab59b16db6c0a3",
    "testharness"
   ],
   "webxr/resources/webxr-util.js": [
-   "08d9fa69730d2523d4a066636bef4959f3e1a725",
+   "b644ba72ac801bc8f659e9678d31ab23db0b7281",
    "support"
   ]
  },
diff --git a/tests/wpt/mozilla/tests/webxr/obtain_frame.html b/tests/wpt/mozilla/tests/webxr/obtain_frame.html
index f1edfc4d70a..d3c7d85c6cc 100644
--- a/tests/wpt/mozilla/tests/webxr/obtain_frame.html
+++ b/tests/wpt/mozilla/tests/webxr/obtain_frame.html
@@ -47,7 +47,17 @@
                 throw "got unknown view";
               }
             }
-
+            let offset = space.getOffsetReferenceSpace(new XRRigidTransform({x: 1, y: -1, z: 4}, {x: 0, y: 1, z: 1, w: 1}));
+            pose = frame.getViewerPose(offset);
+            for (view of pose.views) {
+              if (view.eye == "left") {
+                assert_matrix_approx_equals(view.transform.matrix, [-1/3,-2/3,2/3,0,-2/3,2/3,1/3,0,-2/3,-1/3,-2/3,0,3.4,-1.9,-0.9,1], 0.001, "left offset transform");
+              } else if (view.eye == "right") {
+                assert_matrix_approx_equals(view.transform.matrix, [-1/3,-2/3,2/3,0,-2/3,2/3,1/3,0,-2/3,-1/3,-2/3,0,3.6,-1.9,-0.9,1], 0.001, "right offset transform");
+              } else {
+                throw "got unknown view";
+              }
+            }
           });
         </script>
     </body>
diff --git a/tests/wpt/mozilla/tests/webxr/resources/webxr-util.js b/tests/wpt/mozilla/tests/webxr/resources/webxr-util.js
index 08d9fa69730..b644ba72ac8 100644
--- a/tests/wpt/mozilla/tests/webxr/resources/webxr-util.js
+++ b/tests/wpt/mozilla/tests/webxr/resources/webxr-util.js
@@ -7,7 +7,7 @@ const RIGHT_OFFSET = {position: [0.1, 0, 0], orientation: [0,0,0,0]};
 let assert_matrix_approx_equals = function(m1, m2, epsilon, prefix = "") {
   assert_equals(m1.length, m2.length, prefix + "Matrix lengths should match");
   for(var i = 0; i < m1.length; ++i) {
-    assert_approx_equals(m1[i], m2[i], epsilon, prefix + " Component number " + i + " should match");
+    assert_approx_equals(m1[i], m2[i], epsilon, prefix + ": Component number " + i + " should match");
   }
 }