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