# vkCmdCopyBuffer2(3) Manual Page

## Name

vkCmdCopyBuffer2 - Copy data between buffer regions

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## C Specification

To copy data between buffer objects, call:

    // Provided by VK_VERSION_1_3
    void vkCmdCopyBuffer2(
        VkCommandBuffer                             commandBuffer,
        const VkCopyBufferInfo2*                    pCopyBufferInfo);

or the equivalent command

    // Provided by VK_KHR_copy_commands2
    void vkCmdCopyBuffer2KHR(
        VkCommandBuffer                             commandBuffer,
        const VkCopyBufferInfo2*                    pCopyBufferInfo);

## Parameters

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

- `pCopyBufferInfo` is a pointer to a VkCopyBufferInfo2 structure describing the copy parameters.

## Description

Each source region specified by `pCopyBufferInfo->pRegions` is copied from the source buffer to the destination region of the destination buffer. If any of the specified regions in `pCopyBufferInfo->srcBuffer` overlaps in memory with any of the specified regions in `pCopyBufferInfo->dstBuffer`, values read from those overlapping regions are undefined.

Valid Usage

- VUID-vkCmdCopyBuffer2-commandBuffer-01822
  If `commandBuffer` is an unprotected command buffer and `protectedNoFault` is not supported, `srcBuffer` must not be a protected buffer

- VUID-vkCmdCopyBuffer2-commandBuffer-01823
  If `commandBuffer` is an unprotected command buffer and `protectedNoFault` is not supported, `dstBuffer` must not be a protected buffer

- VUID-vkCmdCopyBuffer2-commandBuffer-01824
  If `commandBuffer` is a protected command buffer and `protectedNoFault` is not supported, `dstBuffer` must not be an unprotected buffer

Valid Usage (Implicit)

- VUID-vkCmdCopyBuffer2-commandBuffer-parameter
  `commandBuffer` must be a valid VkCommandBuffer handle

- VUID-vkCmdCopyBuffer2-pCopyBufferInfo-parameter
  `pCopyBufferInfo` must be a valid pointer to a valid VkCopyBufferInfo2 structure

- VUID-vkCmdCopyBuffer2-commandBuffer-recording
  `commandBuffer` must be in the recording state

- VUID-vkCmdCopyBuffer2-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support transfer, graphics, or compute operations

- VUID-vkCmdCopyBuffer2-renderpass
  This command must only be called outside of a render pass instance

- VUID-vkCmdCopyBuffer2-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 | Outside | Outside | Transfer Graphics Compute | Action

## See Also

VK_KHR_copy_commands2, VK_VERSION_1_3, VkCommandBuffer, VkCopyBufferInfo2

## 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