VkSemaphoreSignalInfo(3)

# VkSemaphoreSignalInfo(3) Manual Page

## Name

VkSemaphoreSignalInfo - Structure containing information about a semaphore signal operation

## C Specification

The `VkSemaphoreSignalInfo` structure is defined as:

    // Provided by VK_VERSION_1_2
    typedef struct VkSemaphoreSignalInfo {
        VkStructureType    sType;
        const void*        pNext;
        VkSemaphore        semaphore;
        uint64_t           value;
    } VkSemaphoreSignalInfo;

    // Provided by VK_KHR_timeline_semaphore
    // Equivalent to VkSemaphoreSignalInfo
    typedef VkSemaphoreSignalInfo VkSemaphoreSignalInfoKHR;

## Members

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

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

- `semaphore` is the handle of the semaphore to signal.

- `value` is the value to signal.

## Description

Valid Usage

- VUID-VkSemaphoreSignalInfo-semaphore-03257
  `semaphore` must have been created with a VkSemaphoreType of VK_SEMAPHORE_TYPE_TIMELINE

- VUID-VkSemaphoreSignalInfo-value-03258
  `value` must have a value greater than the current value of the semaphore

- VUID-VkSemaphoreSignalInfo-value-03259
  `value` must be less than the value of any pending semaphore signal operations

- VUID-VkSemaphoreSignalInfo-value-03260
  `value` must have a value which does not differ from the current value of the semaphore or the value of any outstanding semaphore wait or signal operation on `semaphore` by more than `maxTimelineSemaphoreValueDifference`

Valid Usage (Implicit)

- VUID-VkSemaphoreSignalInfo-sType-sType
  `sType` must be VK_STRUCTURE_TYPE_SEMAPHORE_SIGNAL_INFO

- VUID-VkSemaphoreSignalInfo-pNext-pNext
  `pNext` must be `NULL`

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

## See Also

VK_KHR_timeline_semaphore, VK_VERSION_1_2, VkSemaphore, VkStructureType, vkSignalSemaphore, vkSignalSemaphore

## 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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0