diff --git a/src/xrt/include/xrt/xrt_compositor.h b/src/xrt/include/xrt/xrt_compositor.h
index 2bc3c31a0..c13464501 100644
--- a/src/xrt/include/xrt/xrt_compositor.h
+++ b/src/xrt/include/xrt/xrt_compositor.h
@@ -748,6 +748,7 @@ xrt_compositor_gl(struct xrt_compositor *xc)
  *
  */
 
+typedef struct VkCommandBuffer_T *VkCommandBuffer;
 #ifdef XRT_64_BIT
 typedef struct VkImage_T *VkImage;
 typedef struct VkDeviceMemory_T *VkDeviceMemory;
@@ -769,6 +770,10 @@ struct xrt_swapchain_vk
 
 	VkImage images[XRT_MAX_SWAPCHAIN_IMAGES];
 	VkDeviceMemory mems[XRT_MAX_SWAPCHAIN_IMAGES];
+
+	// Prerecorded swapchain image ownership/layout transition barriers
+	VkCommandBuffer acquire[XRT_MAX_SWAPCHAIN_IMAGES];
+	VkCommandBuffer release[XRT_MAX_SWAPCHAIN_IMAGES];
 };
 
 /*!
diff --git a/src/xrt/include/xrt/xrt_results.h b/src/xrt/include/xrt/xrt_results.h
index f9fc6d17b..6818f935a 100644
--- a/src/xrt/include/xrt/xrt_results.h
+++ b/src/xrt/include/xrt/xrt_results.h
@@ -13,5 +13,6 @@ typedef enum xrt_result
 {
 	XRT_SUCCESS = 0,
 	XRT_ERROR_IPC_FAILURE = -1,
-	XRT_ERROR_NO_IMAGE_AVAILABLE = -2
+	XRT_ERROR_NO_IMAGE_AVAILABLE = -2,
+	XRT_ERROR_FAILED_TO_SUBMIT_VULKAN_COMMANDS = -3,
 } xrt_result_t;