# VkImportSemaphoreZirconHandleInfoFUCHSIA(3) Manual Page

## Name

VkImportSemaphoreZirconHandleInfoFUCHSIA - Structure specifying Zircon event handle to import to a semaphore

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## C Specification

The `VkImportSemaphoreZirconHandleInfoFUCHSIA` structure is defined as:

    // Provided by VK_FUCHSIA_external_semaphore
    typedef struct VkImportSemaphoreZirconHandleInfoFUCHSIA {
        VkStructureType                          sType;
        const void*                              pNext;
        VkSemaphore                              semaphore;
        VkSemaphoreImportFlags                   flags;
        VkExternalSemaphoreHandleTypeFlagBits    handleType;
        zx_handle_t                              zirconHandle;
    } VkImportSemaphoreZirconHandleInfoFUCHSIA;

## Members

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

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

- `semaphore` is the semaphore into which the payload will be imported.

- `flags` is a bitmask of VkSemaphoreImportFlagBits specifying additional parameters for the semaphore payload import operation.

- `handleType` is a VkExternalSemaphoreHandleTypeFlagBits value specifying the type of `zirconHandle`.

- `zirconHandle` is the external handle to import.

## Description

The handle types supported by `handleType` are:

Table 1. Handle Types Supported by `VkImportSemaphoreZirconHandleInfoFUCHSIA`
Handle Type | Transference | Permanence Supported
--- | --- | ---
`VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_ZIRCON_EVENT_BIT_FUCHSIA` | Reference | Temporary,Permanent

Valid Usage

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-handleType-04765
  `handleType` must be a value included in the Handle Types Supported by `VkImportSemaphoreZirconHandleInfoFUCHSIA` table

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-zirconHandle-04766
  `zirconHandle` must obey any requirements listed for `handleType` in external semaphore handle types compatibility

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-zirconHandle-04767
  `zirconHandle` must have `ZX_RIGHTS_BASIC` and `ZX_RIGHTS_SIGNAL` rights

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-semaphoreType-04768
  The VkSemaphoreTypeCreateInfo::`semaphoreType` field must not be `VK_SEMAPHORE_TYPE_TIMELINE`

Valid Usage (Implicit)

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_IMPORT_SEMAPHORE_ZIRCON_HANDLE_INFO_FUCHSIA`

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-pNext-pNext
  `pNext` must be `NULL`

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-semaphore-parameter
  `semaphore` must be a valid VkSemaphore handle

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-flags-parameter
  `flags` must be a valid combination of VkSemaphoreImportFlagBits values

- VUID-VkImportSemaphoreZirconHandleInfoFUCHSIA-handleType-parameter
  `handleType` must be a valid VkExternalSemaphoreHandleTypeFlagBits value

Host Synchronization

- Host access to `semaphore` must be externally synchronized

## See Also

VK_FUCHSIA_external_semaphore, VkExternalSemaphoreHandleTypeFlagBits, VkSemaphore, VkSemaphoreImportFlags, VkStructureType, vkImportSemaphoreZirconHandleFUCHSIA

## 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