C Specification

To query the extensions available to a given physical device, call:

// Provided by VK_VERSION_1_0
VkResult vkEnumerateDeviceExtensionProperties(
    VkPhysicalDevice                            physicalDevice,
    const char*                                 pLayerName,
    uint32_t*                                   pPropertyCount,
    VkExtensionProperties*                      pProperties);

Parameters

  • physicalDevice is the physical device that will be queried.

  • pLayerName is either NULL or a pointer to a null-terminated UTF-8 string naming the layer to retrieve extensions from.

  • pPropertyCount is a pointer to an integer related to the number of extension properties available or queried, and is treated in the same fashion as the vkEnumerateInstanceExtensionProperties::pPropertyCount parameter.

  • pProperties is either NULL or a pointer to an array of VkExtensionProperties structures.

Description

When pLayerName parameter is NULL, only extensions provided by the Vulkan implementation or by implicitly enabled layers are returned. When pLayerName is the name of a layer, the device extensions provided by that layer are returned.

Implementations must not advertise any pair of extensions that cannot be enabled together due to behavioral differences, or any extension that cannot be enabled against the advertised version.

Implementations claiming support for the Roadmap 2022 profile must advertise the VK_KHR_global_priority extension in pProperties.

Note

Due to platform details on Android, vkEnumerateDeviceExtensionProperties may be called with physicalDevice equal to NULL during layer discovery. This behaviour will only be observed by layer implementations, and not the underlying Vulkan driver.
Valid Usage (Implicit)

  • VUID-vkEnumerateDeviceExtensionProperties-physicalDevice-parameter
    physicalDevice must be a valid VkPhysicalDevice handle

  • VUID-vkEnumerateDeviceExtensionProperties-pLayerName-parameter
    If pLayerName is not NULL, pLayerName must be a null-terminated UTF-8 string

  • VUID-vkEnumerateDeviceExtensionProperties-pPropertyCount-parameter
    pPropertyCount must be a valid pointer to a uint32_t value

  • VUID-vkEnumerateDeviceExtensionProperties-pProperties-parameter
    If the value referenced by pPropertyCount is not 0, and pProperties is not NULL, pProperties must be a valid pointer to an array of pPropertyCount VkExtensionProperties structures

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

  • VK_ERROR_LAYER_NOT_PRESENT

See Also

VK_VERSION_1_0, VkExtensionProperties, VkPhysicalDevice

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