# vkCmdEndQuery(3) Manual Page

## Name

vkCmdEndQuery - Ends a query

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## C Specification

To end a query after the set of desired drawing or dispatching commands is executed, call:

    // Provided by VK_VERSION_1_0
    void vkCmdEndQuery(
        VkCommandBuffer                             commandBuffer,
        VkQueryPool                                 queryPool,
        uint32_t                                    query);

## Parameters

- `commandBuffer` is the command buffer into which this command will be recorded.

- `queryPool` is the query pool that is managing the results of the query.

- `query` is the query index within the query pool where the result is stored.

## Description

The command completes the query in `queryPool` identified by `query`, and marks it as available.

This command defines an execution dependency between other query commands that reference the same query.

The first synchronization scope includes all commands which reference the queries in `queryPool` indicated by `query` that occur earlier in submission order.

The second synchronization scope includes only the operation of this command.

Calling `vkCmdEndQuery` is equivalent to calling vkCmdEndQueryIndexedEXT with the `index` parameter set to zero.

Valid Usage

- VUID-vkCmdEndQuery-None-01923
  All queries used by the command must be active

- VUID-vkCmdEndQuery-query-00810
  `query` must be less than the number of queries in `queryPool`

- VUID-vkCmdEndQuery-commandBuffer-01886
  `commandBuffer` must not be a protected command buffer

- VUID-vkCmdEndQuery-query-00812
  If `vkCmdEndQuery` is called within a render pass instance, the sum of `query` and the number of bits set in the current subpass’s view mask must be less than or equal to the number of queries in `queryPool`

- VUID-vkCmdEndQuery-queryPool-03227
  If `queryPool` was created with a `queryType` of `VK_QUERY_TYPE_PERFORMANCE_QUERY_KHR` and one or more of the counters used to create `queryPool` was `VK_PERFORMANCE_COUNTER_SCOPE_COMMAND_BUFFER_KHR`, the vkCmdEndQuery must be the last recorded command in `commandBuffer`

- VUID-vkCmdEndQuery-queryPool-03228
  If `queryPool` was created with a `queryType` of `VK_QUERY_TYPE_PERFORMANCE_QUERY_KHR` and one or more of the counters used to create `queryPool` was `VK_PERFORMANCE_COUNTER_SCOPE_RENDER_PASS_KHR`, the vkCmdEndQuery must not be recorded within a render pass instance

- VUID-vkCmdEndQuery-None-07007
  If called within a subpass of a render pass instance, the corresponding `vkCmdBeginQuery`* command must have been called previously within the same subpass

Valid Usage (Implicit)

- VUID-vkCmdEndQuery-commandBuffer-parameter
  `commandBuffer` must be a valid VkCommandBuffer handle

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

- VUID-vkCmdEndQuery-commandBuffer-recording
  `commandBuffer` must be in the recording state

- VUID-vkCmdEndQuery-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support graphics, compute, decode, or encode operations

- VUID-vkCmdEndQuery-commonparent
  Both of `commandBuffer`, and `queryPool` must have been created, allocated, or retrieved from the same VkDevice

Host Synchronization

- Host access to `commandBuffer` must be externally synchronized

- Host access to the `VkCommandPool` that `commandBuffer` was allocated from must be externally synchronized

Command Properties

Command Buffer Levels | Render Pass Scope | Video Coding Scope | Supported Queue Types | Command Type
--- | --- | --- | --- | ---
Primary Secondary | Both | Both | Graphics Compute Decode Encode | Action State

## See Also

VK_VERSION_1_0, VkCommandBuffer, VkQueryPool, vkCmdBeginQuery, vkCmdBeginQueryIndexedEXT, vkCmdEndQueryIndexedEXT

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0