# VkPresentTimingInfoFlagBitsEXT(3) Manual Page

## Name

VkPresentTimingInfoFlagBitsEXT - Bitmask specifying present timing info flags

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## C Specification

Bits which can be set in VkPresentTimingInfoEXT::`flags`, specifying options for how to interpret timing information:

    // Provided by VK_EXT_present_timing
    typedef enum VkPresentTimingInfoFlagBitsEXT {
        VK_PRESENT_TIMING_INFO_PRESENT_AT_RELATIVE_TIME_BIT_EXT = 0x00000001,
        VK_PRESENT_TIMING_INFO_PRESENT_AT_NEAREST_REFRESH_CYCLE_BIT_EXT = 0x00000002,
    } VkPresentTimingInfoFlagBitsEXT;

## Description

- `VK_PRESENT_TIMING_INFO_PRESENT_AT_RELATIVE_TIME_BIT_EXT` specifies that `VkPresentTimingInfoEXT`::`targetTime` is to be interpreted as a relative time from the previous presentation’s `VK_PRESENT_STAGE_IMAGE_FIRST_PIXEL_VISIBLE_BIT_EXT` stage. If the `swapchain` has never been used to present an image, the provided `targetTime` is ignored.

- `VK_PRESENT_TIMING_INFO_PRESENT_AT_NEAREST_REFRESH_CYCLE_BIT_EXT` specifies that the application would prefer the image to be presented earlier than the time specified in `VkPresentTimingInfoEXT`::`targetTime` if that time falls within the first half of a refresh cycle. In that case, the presentation engine may choose to display the image at the start of that refresh cycle.

## See Also

VK_EXT_present_timing, VkPresentTimingInfoFlagsEXT

## 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