# vkCreateAndroidSurfaceKHR(3) Manual Page

## Name

vkCreateAndroidSurfaceKHR - Create a slink:VkSurfaceKHR object for an Android native window

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## C Specification

To create a `VkSurfaceKHR` object for an Android native window, call:

    // Provided by VK_KHR_android_surface
    VkResult vkCreateAndroidSurfaceKHR(
        VkInstance                                  instance,
        const VkAndroidSurfaceCreateInfoKHR*        pCreateInfo,
        const VkAllocationCallbacks*                pAllocator,
        VkSurfaceKHR*                               pSurface);

## Parameters

- `instance` is the instance to associate the surface with.

- `pCreateInfo` is a pointer to a `VkAndroidSurfaceCreateInfoKHR` structure containing parameters affecting the creation of the surface object.

- `pAllocator` is the allocator used for host memory allocated for the surface object when there is no more specific allocator available (see Memory Allocation).

- `pSurface` is a pointer to a VkSurfaceKHR handle in which the created surface object is returned.

## Description

During the lifetime of a surface created using a particular ANativeWindow handle any attempts to create another surface for the same ANativeWindow and any attempts to connect to the same ANativeWindow through other platform mechanisms will fail.

Note | In particular, only one `VkSurfaceKHR` can exist at a time for a given window. Similarly, a native window cannot be used by both a `VkSurfaceKHR` and `EGLSurface` simultaneously.

If successful, `vkCreateAndroidSurfaceKHR` increments the ANativeWindow’s reference count, and `vkDestroySurfaceKHR` will decrement it.

On Android, when a swapchain’s `imageExtent` does not match the surface’s `currentExtent`, the presentable images will be scaled to the surface’s dimensions during presentation. `minImageExtent` is (1,1), and `maxImageExtent` is the maximum image size supported by the consumer. For the system compositor, `currentExtent` is the window size (i.e. the consumer’s preferred size).

Valid Usage (Implicit)

- VUID-vkCreateAndroidSurfaceKHR-instance-parameter
  `instance` must be a valid VkInstance handle

- VUID-vkCreateAndroidSurfaceKHR-pCreateInfo-parameter
  `pCreateInfo` must be a valid pointer to a valid VkAndroidSurfaceCreateInfoKHR structure

- VUID-vkCreateAndroidSurfaceKHR-pAllocator-parameter
  If `pAllocator` is not `NULL`, `pAllocator` must be a valid pointer to a valid VkAllocationCallbacks structure

- VUID-vkCreateAndroidSurfaceKHR-pSurface-parameter
  `pSurface` must be a valid pointer to a VkSurfaceKHR handle

Return Codes

On success, this command returns

  - `VK_SUCCESS`

On failure, this command returns

  - `VK_ERROR_OUT_OF_HOST_MEMORY`

  - `VK_ERROR_OUT_OF_DEVICE_MEMORY`

  - `VK_ERROR_NATIVE_WINDOW_IN_USE_KHR`

## See Also

VK_KHR_android_surface, VkAllocationCallbacks, VkAndroidSurfaceCreateInfoKHR, VkInstance, VkSurfaceKHR

## 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