# VkSurfaceCounterFlagBitsEXT(3) Manual Page

## Name

VkSurfaceCounterFlagBitsEXT - Surface-relative counter types

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## C Specification

Bits which can be set in VkSurfaceCapabilities2EXT::`supportedSurfaceCounters`, indicating supported surface counter types, are:

    // Provided by VK_EXT_display_surface_counter
    typedef enum VkSurfaceCounterFlagBitsEXT {
        VK_SURFACE_COUNTER_VBLANK_BIT_EXT = 0x00000001,
      // VK_SURFACE_COUNTER_VBLANK_EXT is a deprecated alias
        VK_SURFACE_COUNTER_VBLANK_EXT = VK_SURFACE_COUNTER_VBLANK_BIT_EXT,
    } VkSurfaceCounterFlagBitsEXT;

## Description

- `VK_SURFACE_COUNTER_VBLANK_BIT_EXT` specifies a counter incrementing once every time a vertical blanking period occurs on the display associated with the surface.

## See Also

VK_EXT_display_surface_counter, VkSurfaceCounterFlagsEXT, vkGetSwapchainCounterEXT

## 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