C Specification

To unmap a memory object once host access to it is no longer needed by the application, call:

// Provided by VK_VERSION_1_0
void vkUnmapMemory(
    VkDevice                                    device,
    VkDeviceMemory                              memory);


  • device is the logical device that owns the memory.

  • memory is the memory object to be unmapped.


Valid Usage
  • VUID-vkUnmapMemory-memory-00689
    memory must be currently host mapped

Valid Usage (Implicit)
  • VUID-vkUnmapMemory-device-parameter
    device must be a valid VkDevice handle

  • VUID-vkUnmapMemory-memory-parameter
    memory must be a valid VkDeviceMemory handle

  • VUID-vkUnmapMemory-memory-parent
    memory must have been created, allocated, or retrieved from device

Host Synchronization
  • Host access to memory must be externally synchronized

See Also

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 2014-2023 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0