C Specification

To determine the correct parameters to use when importing host pointers, call:

// Provided by VK_EXT_external_memory_host
VkResult vkGetMemoryHostPointerPropertiesEXT(
    VkDevice                                    device,
    VkExternalMemoryHandleTypeFlagBits          handleType,
    const void*                                 pHostPointer,
    VkMemoryHostPointerPropertiesEXT*           pMemoryHostPointerProperties);

Parameters

  • device is the logical device that will be importing pHostPointer.

  • handleType is a VkExternalMemoryHandleTypeFlagBits value specifying the type of the handle pHostPointer.

  • pHostPointer is the host pointer to import from.

  • pMemoryHostPointerProperties is a pointer to a VkMemoryHostPointerPropertiesEXT structure in which the host pointer properties are returned.

Description

If VkPhysicalDeviceVulkanSC10Properties::deviceNoDynamicHostAllocations is VK_TRUE, vkGetMemoryHostPointerPropertiesEXT must not return VK_ERROR_OUT_OF_HOST_MEMORY.

Valid Usage

  • VUID-vkGetMemoryHostPointerPropertiesEXT-handleType-01752
    handleType must be VK_EXTERNAL_MEMORY_HANDLE_TYPE_HOST_ALLOCATION_BIT_EXT or VK_EXTERNAL_MEMORY_HANDLE_TYPE_HOST_MAPPED_FOREIGN_MEMORY_BIT_EXT

  • VUID-vkGetMemoryHostPointerPropertiesEXT-pHostPointer-01753
    pHostPointer must be a pointer aligned to an integer multiple of VkPhysicalDeviceExternalMemoryHostPropertiesEXT::minImportedHostPointerAlignment

  • VUID-vkGetMemoryHostPointerPropertiesEXT-handleType-01754
    If handleType is VK_EXTERNAL_MEMORY_HANDLE_TYPE_HOST_ALLOCATION_BIT_EXT, pHostPointer must be a pointer to host memory

  • VUID-vkGetMemoryHostPointerPropertiesEXT-handleType-01755
    If handleType is VK_EXTERNAL_MEMORY_HANDLE_TYPE_HOST_MAPPED_FOREIGN_MEMORY_BIT_EXT, pHostPointer must be a pointer to host mapped foreign memory

Valid Usage (Implicit)

  • VUID-vkGetMemoryHostPointerPropertiesEXT-device-parameter
    device must be a valid VkDevice handle

  • VUID-vkGetMemoryHostPointerPropertiesEXT-handleType-parameter
    handleType must be a valid VkExternalMemoryHandleTypeFlagBits value

  • VUID-vkGetMemoryHostPointerPropertiesEXT-pHostPointer-parameter
    pHostPointer must be a pointer value

  • VUID-vkGetMemoryHostPointerPropertiesEXT-pMemoryHostPointerProperties-parameter
    pMemoryHostPointerProperties must be a valid pointer to a VkMemoryHostPointerPropertiesEXT structure

Return Codes
On success, this command returns

  • VK_SUCCESS

On failure, this command returns

  • VK_ERROR_OUT_OF_HOST_MEMORY

  • VK_ERROR_INVALID_EXTERNAL_HANDLE

See Also

VK_EXT_external_memory_host, VkDevice, VkExternalMemoryHandleTypeFlagBits, VkMemoryHostPointerPropertiesEXT

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