# vkCmdPushDataEXT(3) Manual Page

## Name

vkCmdPushDataEXT - Update the values of push data

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## C Specification

To update push data when using descriptor heaps, call:

    // Provided by VK_EXT_descriptor_heap
    void vkCmdPushDataEXT(
        VkCommandBuffer                             commandBuffer,
        const VkPushDataInfoEXT*                    pPushDataInfo);

## Parameters

- `commandBuffer` is the command buffer in which the push data update will be recorded.

- `pPushDataInfo` is a pointer to a VkPushDataInfoEXT structure.

## Description

When `vkCmdPushDataEXT` is recorded, it immediately invalidates all non-heap descriptor state. Similarly, recording any non-heap descriptor state commands immediately invalidates state set by this command.

All push data is available to all shaders using the existing `PushConstant` `Storage` `Class`.

Note | Device addresses in push data are intended as the fast path for shader-constant data that does not fit into push data directly. In order to maximize performance of constant data inputs, addresses should be aligned to `minUniformBufferOffsetAlignment`, and decorated with `Alignment` and `NonWritable` in the shader when using physical pointers.

Valid Usage (Implicit)

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

- VUID-vkCmdPushDataEXT-pPushDataInfo-parameter
  `pPushDataInfo` must be a valid pointer to a valid VkPushDataInfoEXT structure

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

- VUID-vkCmdPushDataEXT-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support VK_QUEUE_COMPUTE_BIT, or VK_QUEUE_GRAPHICS_BIT operations

- VUID-vkCmdPushDataEXT-videocoding
  This command must only be called outside of a video coding scope

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 | Outside | VK_QUEUE_COMPUTE_BIT VK_QUEUE_GRAPHICS_BIT | State

Conditional Rendering

vkCmdPushDataEXT is not affected by conditional rendering

## See Also

VK_EXT_descriptor_heap, VkCommandBuffer, VkPushDataInfoEXT

## 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