# vkGetSwapchainImagesKHR(3) Manual Page

## Name

vkGetSwapchainImagesKHR - Obtain the array of presentable images associated with a swapchain

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## C Specification

To obtain the array of presentable images associated with a swapchain, call:

    // Provided by VK_KHR_swapchain
    VkResult vkGetSwapchainImagesKHR(
        VkDevice                                    device,
        VkSwapchainKHR                              swapchain,
        uint32_t*                                   pSwapchainImageCount,
        VkImage*                                    pSwapchainImages);

## Parameters

- `device` is the device associated with `swapchain`.

- `swapchain` is the swapchain to query.

- `pSwapchainImageCount` is a pointer to an integer related to the number of presentable images available or queried, as described below.

- `pSwapchainImages` is either `NULL` or a pointer to an array of `VkImage` handles.

## Description

If `pSwapchainImages` is `NULL`, then the number of presentable images for `swapchain` is returned in `pSwapchainImageCount`. Otherwise, `pSwapchainImageCount` must point to a variable set by the application to the number of elements in the `pSwapchainImages` array, and on return the variable is overwritten with the number of structures actually written to `pSwapchainImages`. If the value of `pSwapchainImageCount` is less than the number of presentable images for `swapchain`, at most `pSwapchainImageCount` structures will be written, and `VK_INCOMPLETE` will be returned instead of `VK_SUCCESS`, to indicate that not all the available presentable images were returned.

Valid Usage (Implicit)

- VUID-vkGetSwapchainImagesKHR-device-parameter
  `device` must be a valid VkDevice handle

- VUID-vkGetSwapchainImagesKHR-swapchain-parameter
  `swapchain` must be a valid VkSwapchainKHR handle

- VUID-vkGetSwapchainImagesKHR-pSwapchainImageCount-parameter
  `pSwapchainImageCount` must be a valid pointer to a `uint32_t` value

- VUID-vkGetSwapchainImagesKHR-pSwapchainImages-parameter
  If the value referenced by `pSwapchainImageCount` is not `0`, and `pSwapchainImages` is not `NULL`, `pSwapchainImages` must be a valid pointer to an array of `pSwapchainImageCount` VkImage handles

- VUID-vkGetSwapchainImagesKHR-swapchain-parent
  `swapchain` must have been created, allocated, or retrieved from `device`

Return Codes

On success, this command returns

  - `VK_SUCCESS`

  - `VK_INCOMPLETE`

On failure, this command returns

  - `VK_ERROR_OUT_OF_HOST_MEMORY`

  - `VK_ERROR_OUT_OF_DEVICE_MEMORY`

## See Also

VK_KHR_swapchain, VkDevice, VkImage, VkSwapchainKHR

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0