C Specification

When VkExportMemoryAllocateInfoNV::handleTypes includes VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_NV, add a VkExportMemoryWin32HandleInfoNV structure to the pNext chain of the VkExportMemoryAllocateInfoNV structure to specify security attributes and access rights for the memory object’s external handle.

The VkExportMemoryWin32HandleInfoNV structure is defined as:

// Provided by VK_NV_external_memory_win32
typedef struct VkExportMemoryWin32HandleInfoNV {
    VkStructureType               sType;
    const void*                   pNext;
    const SECURITY_ATTRIBUTES*    pAttributes;
    DWORD                         dwAccess;
} VkExportMemoryWin32HandleInfoNV;


  • sType is the type of this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • pAttributes is a pointer to a Windows SECURITY_ATTRIBUTES structure specifying security attributes of the handle.

  • dwAccess is a DWORD specifying access rights of the handle.


If this structure is not present, or if pAttributes is set to NULL, default security descriptor values will be used, and child processes created by the application will not inherit the handle, as described in the MSDN documentation for “Synchronization Object Security and Access Rights”1. Further, if the structure is not present, the access rights will be


Valid Usage (Implicit)
  • VUID-VkExportMemoryWin32HandleInfoNV-sType-sType

  • VUID-VkExportMemoryWin32HandleInfoNV-pAttributes-parameter
    If pAttributes is not NULL, pAttributes must be a valid pointer to a valid SECURITY_ATTRIBUTES value

See Also

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 2014-2022 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0