1 files changed, 49 insertions, 0 deletions
diff --git a/gfx/wr/wrench/reftests/clip/fixed-position-clipping.yaml b/gfx/wr/wrench/reftests/clip/fixed-position-clipping.yaml
new file mode 100644
index 0000000000..8eaa388710
--- /dev/null
+++ b/gfx/wr/wrench/reftests/clip/fixed-position-clipping.yaml
@@ -0,0 +1,49 @@
+# This test ensures that children of fixed position stacking contexts are not
+# clipped by parent clipping nodes. The contents of the fixed position stacking
+# contexts below should not be clipped by their parent clipping nodes, but
+# instead should be promoted to be children of the top-level reference frame.
+---
+root:
+  items:
+    -
+      clip-rect: [15, 15, 30, 30]
+      type: scroll-frame
+      content-size: [60, 60]
+      bounds: [15, 15, 30, 30]
+      items:
+      -
+        bounds: [10, 10, 100, 100]
+        clip-rect: [10, 10, 100, 100]
+        clip-and-scroll: root-reference-frame
+        type: stacking-context
+        items:
+          -
+            bounds: [0, 0, 100, 100]
+            clip-rect: [0, 0, 100, 100]
+            clip-and-scroll: root-reference-frame
+            type: rect
+            color: 0 255 0 1.0
+    # The same test as above, except this time the stacking context also starts its
+    # own reference frame.
+    -
+      clip-rect: [115, 15, 30, 30]
+      type: scroll-frame
+      content-size: [60, 60]
+      bounds: [115, 15, 30, 30]
+      items:
+      -
+        bounds: [110, 10, 100, 100]
+        clip-rect: [110, 10, 100, 100]
+        clip-and-scroll: root-reference-frame
+        id: 4
+        type: stacking-context
+        transform: [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]
+        items:
+          -
+            bounds: [0, 0, 100, 100]
+            clip-rect: [0, 0, 100, 100]
+            clip-and-scroll: 4
+            type: rect
+            color: 0 255 0 1.0
+  id: [0, 1]
+pipelines: []