# VkPhysicalDeviceExternalMemoryRDMAFeaturesNV(3) Manual Page

## Name

VkPhysicalDeviceExternalMemoryRDMAFeaturesNV - Structure describing the external memory RDMA features supported by the implementation

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## C Specification

The `VkPhysicalDeviceExternalMemoryRDMAFeaturesNV` structure is defined as:

    // Provided by VK_NV_external_memory_rdma
    typedef struct VkPhysicalDeviceExternalMemoryRDMAFeaturesNV {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           externalMemoryRDMA;
    } VkPhysicalDeviceExternalMemoryRDMAFeaturesNV;

## Members

This structure describes the following feature:

- `sType` is a VkStructureType value identifying this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `externalMemoryRDMA` indicates whether the implementation has support for the `VK_MEMORY_PROPERTY_RDMA_CAPABLE_BIT_NV` memory property and the `VK_EXTERNAL_MEMORY_HANDLE_TYPE_RDMA_ADDRESS_BIT_NV` external memory handle type.

## Description

If the `VkPhysicalDeviceExternalMemoryRDMAFeaturesNV` 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. If the application wishes to use a VkDevice with any features described by `VkPhysicalDeviceExternalMemoryRDMAFeaturesNV`, it must add an instance of the structure, with the desired feature members set to `VK_TRUE`, to the `pNext` chain of VkDeviceCreateInfo when creating the VkDevice.

Valid Usage (Implicit)

- VUID-VkPhysicalDeviceExternalMemoryRDMAFeaturesNV-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_MEMORY_RDMA_FEATURES_NV`

## See Also

VK_NV_external_memory_rdma, 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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0