# vkCopyImageToMemory(3) Manual Page

## Name

vkCopyImageToMemory - Copy image data into host memory

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## C Specification

To copy data from an image object to host memory, call:

    // Provided by VK_VERSION_1_4
    VkResult vkCopyImageToMemory(
        VkDevice                                    device,
        const VkCopyImageToMemoryInfo*              pCopyImageToMemoryInfo);

or the equivalent command

    // Provided by VK_EXT_host_image_copy
    VkResult vkCopyImageToMemoryEXT(
        VkDevice                                    device,
        const VkCopyImageToMemoryInfo*              pCopyImageToMemoryInfo);

## Parameters

- `device` is the device which owns `pCopyImageToMemoryInfo->srcImage`.

- `pCopyImageToMemoryInfo` is a pointer to a VkCopyImageToMemoryInfo structure describing the copy parameters.

## Description

This command is functionally similar to vkCmdCopyImageToBuffer2, except it is executed on the host and writes to host memory instead of a buffer. The memory of `pCopyImageToMemoryInfo->srcImage` is accessed by the host as if coherent.

Note | If the device has written to the image memory, it is not automatically made available to the host. Before this copy command can be called, a memory barrier for this image must have been issued on the device with the second synchronization scope including `VK_PIPELINE_STAGE_HOST_BIT` and `VK_ACCESS_HOST_READ_BIT`.

Valid Usage (Implicit)

- VUID-vkCopyImageToMemory-device-parameter
  `device` must be a valid VkDevice handle

- VUID-vkCopyImageToMemory-pCopyImageToMemoryInfo-parameter
  `pCopyImageToMemoryInfo` must be a valid pointer to a valid VkCopyImageToMemoryInfo structure

Return Codes

On success, this command returns

  - `VK_SUCCESS`

On failure, this command returns

  - `VK_ERROR_INITIALIZATION_FAILED`

  - `VK_ERROR_OUT_OF_HOST_MEMORY`

  - `VK_ERROR_OUT_OF_DEVICE_MEMORY`

  - `VK_ERROR_MEMORY_MAP_FAILED`

## See Also

VK_EXT_host_image_copy, VK_VERSION_1_4, VkCopyImageToMemoryInfo, VkDevice

## 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