# vkResetQueryPool(3) Manual Page

## Name

vkResetQueryPool - Reset queries in a query pool

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## C Specification

To reset a range of queries in a query pool on the host, call:

    // Provided by VK_VERSION_1_2
    void vkResetQueryPool(
        VkDevice                                    device,
        VkQueryPool                                 queryPool,
        uint32_t                                    firstQuery,
        uint32_t                                    queryCount);

or the equivalent command

    // Provided by VK_EXT_host_query_reset
    void vkResetQueryPoolEXT(
        VkDevice                                    device,
        VkQueryPool                                 queryPool,
        uint32_t                                    firstQuery,
        uint32_t                                    queryCount);

## Parameters

- `device` is the logical device that owns the query pool.

- `queryPool` is the handle of the query pool managing the queries being reset.

- `firstQuery` is the initial query index to reset.

- `queryCount` is the number of queries to reset.

## Description

This command sets the status of query indices [`firstQuery`, `firstQuery` + `queryCount` - 1] to unavailable.

If `queryPool` is `VK_QUERY_TYPE_PERFORMANCE_QUERY_KHR` this command sets the status of query indices [`firstQuery`, `firstQuery` + `queryCount` - 1] to unavailable for each pass.

Valid Usage

- VUID-vkResetQueryPool-firstQuery-09436
  `firstQuery` must be less than the number of queries in `queryPool`

- VUID-vkResetQueryPool-firstQuery-09437
  The sum of `firstQuery` and `queryCount` must be less than or equal to the number of queries in `queryPool`

- VUID-vkResetQueryPool-None-02665
  The `hostQueryReset` feature must be enabled

- VUID-vkResetQueryPool-firstQuery-02741
  Submitted commands that refer to the range specified by `firstQuery` and `queryCount` in `queryPool` must have completed execution

- VUID-vkResetQueryPool-firstQuery-02742
  The range of queries specified by `firstQuery` and `queryCount` in `queryPool` must not be in use by calls to vkGetQueryPoolResults or `vkResetQueryPool` in other threads

Valid Usage (Implicit)

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

- VUID-vkResetQueryPool-queryPool-parameter
  `queryPool` must be a valid VkQueryPool handle

- VUID-vkResetQueryPool-queryPool-parent
  `queryPool` must have been created, allocated, or retrieved from `device`

## See Also

VK_EXT_host_query_reset, VK_VERSION_1_2, VkDevice, VkQueryPool

## 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