C Specification

The VkFenceGetFdInfoKHR structure is defined as:

// Provided by VK_KHR_external_fence_fd
typedef struct VkFenceGetFdInfoKHR {
    VkStructureType                      sType;
    const void*                          pNext;
    VkFence                              fence;
    VkExternalFenceHandleTypeFlagBits    handleType;
} VkFenceGetFdInfoKHR;


  • sType is the type of this structure.

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

  • fence is the fence from which state will be exported.

  • handleType is the type of handle requested.


The properties of the file descriptor returned depend on the value of handleType. See VkExternalFenceHandleTypeFlagBits for a description of the properties of the defined external fence handle types.

Valid Usage
  • handleType must have been included in VkExportFenceCreateInfo::handleTypes when fence’s current payload was created

  • If handleType refers to a handle type with copy payload transference semantics, fence must be signaled, or have an associated fence signal operation pending execution

  • fence must not currently have its payload replaced by an imported payload as described below in Importing Fence Payloads unless that imported payload’s handle type was included in VkExternalFenceProperties::exportFromImportedHandleTypes for handleType

  • handleType must be defined as a POSIX file descriptor handle

Valid Usage (Implicit)

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 (c) 2014-2020 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0