C Specification

To unsignal the event from a device, call:

// Provided by VK_VERSION_1_3
void vkCmdResetEvent2(
    VkCommandBuffer                             commandBuffer,
    VkEvent                                     event,
    VkPipelineStageFlags2                       stageMask);
// Provided by VK_KHR_synchronization2
// Equivalent to vkCmdResetEvent2
void vkCmdResetEvent2KHR(
    VkCommandBuffer                             commandBuffer,
    VkEvent                                     event,
    VkPipelineStageFlags2                       stageMask);

Parameters

  • commandBuffer is the command buffer into which the command is recorded.

  • event is the event that will be unsignaled.

  • stageMask is a VkPipelineStageFlags2 mask of pipeline stages used to determine the first synchronization scope.

Description

When vkCmdResetEvent2 is submitted to a queue, it defines an execution dependency on commands that were submitted before it, and defines an event unsignal operation which resets the event to the unsignaled state.

The first synchronization scope includes all commands that occur earlier in submission order. The synchronization scope is limited to operations by stageMask or stages that are logically earlier than stageMask.

The second synchronization scope includes only the event unsignal operation.

If event is already in the unsignaled state when vkCmdResetEvent2 is executed on the device, then this command has no effect, no event unsignal operation occurs, and no execution dependency is generated.

Valid Usage
Valid Usage (Implicit)

  • VUID-vkCmdResetEvent2-commandBuffer-parameter
    commandBuffer must be a valid VkCommandBuffer handle

  • VUID-vkCmdResetEvent2-event-parameter
    event must be a valid VkEvent handle

  • VUID-vkCmdResetEvent2-stageMask-parameter
    stageMask must be a valid combination of VkPipelineStageFlagBits2 values

  • VUID-vkCmdResetEvent2-commandBuffer-recording
    commandBuffer must be in the recording state

  • VUID-vkCmdResetEvent2-commandBuffer-cmdpool
    The VkCommandPool that commandBuffer was allocated from must support VK_QUEUE_COMPUTE_BIT, VK_QUEUE_GRAPHICS_BIT, VK_QUEUE_VIDEO_DECODE_BIT_KHR, or VK_QUEUE_VIDEO_ENCODE_BIT_KHR operations

  • VUID-vkCmdResetEvent2-renderpass
    This command must only be called outside of a render pass instance

  • VUID-vkCmdResetEvent2-suspended
    This command must not be called between suspended render pass instances

  • VUID-vkCmdResetEvent2-commonparent
    Both of commandBuffer, and event 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

Outside

Both

VK_QUEUE_COMPUTE_BIT
VK_QUEUE_GRAPHICS_BIT
VK_QUEUE_VIDEO_DECODE_BIT_KHR
VK_QUEUE_VIDEO_ENCODE_BIT_KHR

Synchronization
Conditional Rendering

vkCmdResetEvent2 is not affected by conditional rendering

See Also

VK_KHR_synchronization2, VK_VERSION_1_3, VkCommandBuffer, VkEvent, VkPipelineStageFlags2

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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0