# vkGetRefreshCycleDurationGOOGLE(3) Manual Page

## Name

vkGetRefreshCycleDurationGOOGLE - Obtain the RC duration of the PE's display

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## C Specification

To query the duration of a refresh cycle (RC) for the presentation engine’s display, call:

    // Provided by VK_GOOGLE_display_timing
    VkResult vkGetRefreshCycleDurationGOOGLE(
        VkDevice                                    device,
        VkSwapchainKHR                              swapchain,
        VkRefreshCycleDurationGOOGLE*               pDisplayTimingProperties);

## Parameters

- `device` is the device associated with `swapchain`.

- `swapchain` is the swapchain to obtain the refresh duration for.

- `pDisplayTimingProperties` is a pointer to a `VkRefreshCycleDurationGOOGLE` structure.

## Description

Valid Usage (Implicit)

- VUID-vkGetRefreshCycleDurationGOOGLE-device-parameter
  `device` must be a valid VkDevice handle

- VUID-vkGetRefreshCycleDurationGOOGLE-swapchain-parameter
  `swapchain` must be a valid VkSwapchainKHR handle

- VUID-vkGetRefreshCycleDurationGOOGLE-pDisplayTimingProperties-parameter
  `pDisplayTimingProperties` must be a valid pointer to a VkRefreshCycleDurationGOOGLE structure

- VUID-vkGetRefreshCycleDurationGOOGLE-swapchain-parent
  `swapchain` must have been created, allocated, or retrieved from `device`

Host Synchronization

- Host access to `swapchain` must be externally synchronized

Return Codes

On success, this command returns

  - `VK_SUCCESS`

On failure, this command returns

  - `VK_ERROR_OUT_OF_HOST_MEMORY`

  - `VK_ERROR_DEVICE_LOST`

  - `VK_ERROR_SURFACE_LOST_KHR`

## See Also

VK_GOOGLE_display_timing, VkDevice, VkRefreshCycleDurationGOOGLE, VkSwapchainKHR

## 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