# VkPastPresentationTimingFlagBitsEXT(3) Manual Page

## Name

VkPastPresentationTimingFlagBitsEXT - Bitmask specifying past presentation timing query flags

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## C Specification

Bits which can be set in VkPastPresentationTimingInfoEXT::`flags`, specifying options for queries of past presentation timing information, are:

    // Provided by VK_EXT_present_timing
    typedef enum VkPastPresentationTimingFlagBitsEXT {
        VK_PAST_PRESENTATION_TIMING_ALLOW_PARTIAL_RESULTS_BIT_EXT = 0x00000001,
        VK_PAST_PRESENTATION_TIMING_ALLOW_OUT_OF_ORDER_RESULTS_BIT_EXT = 0x00000002,
    } VkPastPresentationTimingFlagBitsEXT;

## Description

- `VK_PAST_PRESENTATION_TIMING_ALLOW_PARTIAL_RESULTS_BIT_EXT` specifies that vkGetPastPresentationTimingEXT may return partial results for presentation requests that have not completed all requested present stages.

- `VK_PAST_PRESENTATION_TIMING_ALLOW_OUT_OF_ORDER_RESULTS_BIT_EXT` specifies that vkGetPastPresentationTimingEXT may return results out of order with respect to the presentation order.

## See Also

VK_EXT_present_timing, VkPastPresentationTimingFlagsEXT

## 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