VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT

The VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT structure is defined as:

typedef struct VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT {
    VkStructureType sType;
    void* pNext;
    VkBool32 swapchainMaintenance1;
} VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT;

This structure describes the following feature:

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• swapchainMaintenance1 indicates that the implementation supports the following:
  • VkSwapchainPresentFenceInfoEXT, specifying a fence that is signaled when the resources associated with a present operation can be safely destroyed.
  • VkSwapchainPresentModesCreateInfoEXT and VkSwapchainPresentModeInfoEXT, allowing the swapchain to switch present modes without a need for recreation.
  • VkSwapchainPresentScalingCreateInfoEXT, specifying the scaling behavior of the swapchain in presence of window resizing.
  • The VK_SWAPCHAIN_CREATE_DEFERRED_MEMORY_ALLOCATION_BIT_EXT flag, allowing the implementation to defer the allocation of swapchain image memory until first acquisition.
  • vkReleaseSwapchainImagesEXT, allowing acquired swapchain images to be released without presenting them.

If the VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT structure is included in the pNext chain of the VkPhysicalDeviceFeatures2 structure passed to vkGetPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT can also be used in the pNext chain of VkDeviceCreateInfo to selectively enable these features.