# vkCmdCopyMemoryIndirectKHR(3) Manual Page

## Name

vkCmdCopyMemoryIndirectKHR - Copy data between memory regions

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## C Specification

To copy data between two memory regions by specifying copy parameters indirectly in memory, call:

    // Provided by VK_KHR_copy_memory_indirect
    void vkCmdCopyMemoryIndirectKHR(
        VkCommandBuffer                             commandBuffer,
        const VkCopyMemoryIndirectInfoKHR*          pCopyMemoryIndirectInfo);

## Parameters

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

- `pCopyMemoryIndirectInfo` is a pointer to a VkCopyMemoryIndirectInfoKHR structure containing the copy parameters, including the number of copies to execute and a strided array of VkCopyMemoryIndirectCommandKHR structures.

## Description

Each region specified in the memory referenced by `pCopyMemoryIndirectInfo->copyAddressRange` is copied from the source region to the specified destination region. The results are undefined if any of the source and destination regions overlap in memory.

Valid Usage

- VUID-vkCmdCopyMemoryIndirectKHR-indirectMemoryCopy-10935
  The `indirectMemoryCopy` feature must be enabled

- VUID-vkCmdCopyMemoryIndirectKHR-commandBuffer-10936
  The VkCommandPool that `commandBuffer` was allocated from must support at least one of the queue types specified in VkPhysicalDeviceCopyMemoryIndirectPropertiesKHR::`supportedQueues`

- VUID-vkCmdCopyMemoryIndirectKHR-commandBuffer-10937
  `commandBuffer` must not be a protected command buffer

Valid Usage (Implicit)

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

- VUID-vkCmdCopyMemoryIndirectKHR-pCopyMemoryIndirectInfo-parameter
  `pCopyMemoryIndirectInfo` must be a valid pointer to a valid VkCopyMemoryIndirectInfoKHR structure

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

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

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

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

- VUID-vkCmdCopyMemoryIndirectKHR-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 | VK_QUEUE_COMPUTE_BIT VK_QUEUE_GRAPHICS_BIT VK_QUEUE_TRANSFER_BIT | Action

Conditional Rendering

vkCmdCopyMemoryIndirectKHR is not affected by conditional rendering

## See Also

VK_KHR_copy_memory_indirect, VkCommandBuffer, VkCopyMemoryIndirectInfoKHR

## 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