# VkPhysicalDeviceTimelineSemaphoreProperties(3) Manual Page

## Name

VkPhysicalDeviceTimelineSemaphoreProperties - Structure describing timeline semaphore properties that can be supported by an implementation

## C Specification

To query the timeline semaphore properties of a physical device, add a VkPhysicalDeviceTimelineSemaphoreProperties structure to the `pNext` chain of the VkPhysicalDeviceProperties2 structure. The `VkPhysicalDeviceTimelineSemaphoreProperties` structure is defined as:

    typedef struct VkPhysicalDeviceTimelineSemaphoreProperties {
        VkStructureType    sType;
        void*              pNext;
        uint64_t           maxTimelineSemaphoreValueDifference;
    } VkPhysicalDeviceTimelineSemaphoreProperties;

or the equivalent

    typedef VkPhysicalDeviceTimelineSemaphoreProperties VkPhysicalDeviceTimelineSemaphorePropertiesKHR;

## Members

The members of the `VkPhysicalDeviceTimelineSemaphoreProperties` structure describe the following implementation-dependent limits:

## Description

- `maxTimelineSemaphoreValueDifference` indicates the maximum difference allowed by the implementation between the current value of a timeline semaphore and any pending signal or wait operations.

Valid Usage (Implicit)

- `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TIMELINE_SEMAPHORE_PROPERTIES`

## See Also

VkStructureType

## 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.