# VkFenceGetFdInfoKHR(3) Manual Page

## Name

VkFenceGetFdInfoKHR - Structure describing a POSIX FD fence export operation

## C Specification

The `VkFenceGetFdInfoKHR` structure is defined as:

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

## Members

- `sType` is the type of this structure.

- `pNext` is `NULL` or a pointer to an extension-specific structure.

- `fence` is the fence from which state will be exported.

- `handleType` is the type of handle requested.

## Description

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)

- `sType` must be `VK_STRUCTURE_TYPE_FENCE_GET_FD_INFO_KHR`

- `pNext` must be `NULL`

- `fence` must be a valid VkFence handle

- `handleType` must be a valid VkExternalFenceHandleTypeFlagBits value

## See Also

VkExternalFenceHandleTypeFlagBits, VkFence, VkStructureType, vkGetFenceFdKHR

## 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 (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.