VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT(3)

# VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT(3) Manual Page

## Name

VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT - Structure describing whether implementation supports swapchain maintenance1 functionality

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## C Specification

The `VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT` structure is defined as:

    // Provided by VK_EXT_swapchain_maintenance1
    typedef struct VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           swapchainMaintenance1;
    } VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT;

## Members

This structure describes the following feature:

## Description

- `sType` is the type of 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.

Valid Usage (Implicit)

- VUID-VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SWAPCHAIN_MAINTENANCE_1_FEATURES_EXT`

## See Also

VK_EXT_swapchain_maintenance1, VkBool32, VkStructureType

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2023 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0