diff --git a/src/xrt/include/xrt/xrt_defines.h b/src/xrt/include/xrt/xrt_defines.h
index a436578b2..7ef822a78 100644
--- a/src/xrt/include/xrt/xrt_defines.h
+++ b/src/xrt/include/xrt/xrt_defines.h
@@ -1293,6 +1293,18 @@ enum xrt_form_factor
 	XRT_FORM_FACTOR_HANDHELD, //!< Handheld display.
 };
 
+/*!
+ * Visibility mask, mirror of XrVisibilityMaskKHR
+ *
+ * @ingroup xrt_iface
+ */
+enum xrt_visibility_mask_type
+{
+	XRT_VISIBILITY_MASK_TYPE_HIDDEN_TRIANGLE_MESH = 1,
+	XRT_VISIBILITY_MASK_TYPE_VISIBLE_TRIANGLE_MESH = 2,
+	XRT_VISIBILITY_MASK_TYPE_LINE_LOOP = 3,
+};
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/xrt/include/xrt/xrt_device.h b/src/xrt/include/xrt/xrt_device.h
index f902be00e..079c87395 100644
--- a/src/xrt/include/xrt/xrt_device.h
+++ b/src/xrt/include/xrt/xrt_device.h
@@ -11,6 +11,7 @@
 #pragma once
 
 #include "xrt/xrt_defines.h"
+#include "xrt/xrt_visibility_mask.h"
 
 
 #ifdef __cplusplus
@@ -396,6 +397,13 @@ struct xrt_device
 	bool (*compute_distortion)(
 	    struct xrt_device *xdev, uint32_t view, float u, float v, struct xrt_uv_triplet *out_result);
 
+	/*!
+	 * Get the visibility mask for this device.
+	 */
+	void (*get_visibility_mask)(struct xrt_device *xdev,
+	                            enum xrt_visibility_mask_type type,
+	                            struct xrt_visibility_mask **out_mask);
+
 	/*!
 	 * Destroy device.
 	 */
diff --git a/src/xrt/include/xrt/xrt_visibility_mask.h b/src/xrt/include/xrt/xrt_visibility_mask.h
new file mode 100644
index 000000000..f5b52bfc3
--- /dev/null
+++ b/src/xrt/include/xrt/xrt_visibility_mask.h
@@ -0,0 +1,69 @@
+// Copyright 2023, Collabora, Ltd.
+// SPDX-License-Identifier: BSL-1.0
+/*!
+ * @file
+ * @brief  Header defining visibility mask helper struct.
+ * @author Jakob Bornecrantz <jakob@collabora.com>
+ * @ingroup xrt_iface
+ */
+
+#pragma once
+
+#include "xrt/xrt_defines.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*!
+ * Visibility mask helper, the indices and vertices are tightly packed after
+ * this struct.
+ *
+ * @ingroup xrt_iface
+ */
+struct xrt_visibility_mask
+{
+	enum xrt_visibility_mask_type type;
+	uint32_t index_count;
+	uint32_t vertex_count;
+};
+
+/*!
+ * Visibility mask helper function to get the indices.
+ *
+ * @ingroup xrt_iface
+ */
+static inline uint32_t *
+xrt_visibility_mask_get_indices(const struct xrt_visibility_mask *mask)
+{
+	return (uint32_t *)&mask[1];
+}
+
+/*!
+ * Visibility mask helper function to get the vertices.
+ *
+ * @ingroup xrt_iface
+ */
+static inline struct xrt_vec2 *
+xrt_visibility_mask_get_vertices(const struct xrt_visibility_mask *mask)
+{
+	const uint32_t *indices = xrt_visibility_mask_get_indices(mask);
+	return (struct xrt_vec2 *)&indices[mask->index_count];
+}
+
+/*!
+ * Visibility mask helper function to get the total size of the struct.
+ *
+ * @ingroup xrt_iface
+ */
+static inline size_t
+xrt_visibility_mask_get_size(const struct xrt_visibility_mask *mask)
+{
+	return sizeof(*mask) +                               //
+	       sizeof(uint32_t) * mask->index_count +        //
+	       sizeof(struct xrt_vec2) * mask->vertex_count; //
+}
+
+#ifdef __cplusplus
+}
+#endif