diff --git a/vulkan/libvulkan/swapchain.h b/vulkan/libvulkan/swapchain.h
index e3cf624..ed5718c 100644
--- a/vulkan/libvulkan/swapchain.h
+++ b/vulkan/libvulkan/swapchain.h
@@ -29,11 +29,15 @@
 VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceCapabilitiesKHR(VkPhysicalDevice pdev, VkSurfaceKHR surface, VkSurfaceCapabilitiesKHR* capabilities);
 VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceFormatsKHR(VkPhysicalDevice pdev, VkSurfaceKHR surface_handle, uint32_t* count, VkSurfaceFormatKHR* formats);
 VKAPI_ATTR VkResult GetPhysicalDeviceSurfacePresentModesKHR(VkPhysicalDevice pdev, VkSurfaceKHR surface, uint32_t* count, VkPresentModeKHR* modes);
+VKAPI_ATTR VkResult GetDeviceGroupPresentCapabilitiesKHR(VkDevice device, VkDeviceGroupPresentCapabilitiesKHR* pDeviceGroupPresentCapabilities);
+VKAPI_ATTR VkResult GetDeviceGroupSurfacePresentModesKHR(VkDevice device, VkSurfaceKHR surface, VkDeviceGroupPresentModeFlagsKHR* pModes);
+VKAPI_ATTR VkResult GetPhysicalDevicePresentRectanglesKHR(VkPhysicalDevice physicalDevice, VkSurfaceKHR surface, uint32_t* pRectCount, VkRect2D* pRects);
 VKAPI_ATTR VkResult CreateSwapchainKHR(VkDevice device, const VkSwapchainCreateInfoKHR* create_info, const VkAllocationCallbacks* allocator, VkSwapchainKHR* swapchain_handle);
 VKAPI_ATTR void DestroySwapchainKHR(VkDevice device, VkSwapchainKHR swapchain_handle, const VkAllocationCallbacks* allocator);
 VKAPI_ATTR VkResult GetSwapchainImagesKHR(VkDevice device, VkSwapchainKHR swapchain_handle, uint32_t* count, VkImage* images);
 VKAPI_ATTR VkResult AcquireNextImageKHR(VkDevice device, VkSwapchainKHR swapchain_handle, uint64_t timeout, VkSemaphore semaphore, VkFence fence, uint32_t* image_index);
 VKAPI_ATTR VkResult QueuePresentKHR(VkQueue queue, const VkPresentInfoKHR* present_info);
+VKAPI_ATTR VkResult AcquireNextImage2KHR(VkDevice device, const VkAcquireNextImageInfoKHR* pAcquireInfo, uint32_t* pImageIndex);
 VKAPI_ATTR VkResult GetRefreshCycleDurationGOOGLE(VkDevice device, VkSwapchainKHR swapchain, VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties);
 VKAPI_ATTR VkResult GetPastPresentationTimingGOOGLE(VkDevice device, VkSwapchainKHR swapchain, uint32_t* pPresentationTimingCount, VkPastPresentationTimingGOOGLE* pPresentationTimings);
 VKAPI_ATTR VkResult GetSwapchainStatusKHR(VkDevice device, VkSwapchainKHR swapchain);