C Specification

To copy host accessible memory to an acceleration structure, call:

// Provided by VK_KHR_acceleration_structure
VkResult vkCopyMemoryToAccelerationStructureKHR(
    VkDevice                                    device,
    VkDeferredOperationKHR                      deferredOperation,
    const VkCopyMemoryToAccelerationStructureInfoKHR* pInfo);



This command fulfills the same task as vkCmdCopyMemoryToAccelerationStructureKHR but is executed by the host.

This command can accept acceleration structures produced by either vkCmdCopyAccelerationStructureToMemoryKHR or vkCopyAccelerationStructureToMemoryKHR.

Valid Usage
  • VUID-vkCopyMemoryToAccelerationStructureKHR-deferredOperation-03677
    If deferredOperation is not VK_NULL_HANDLE, it must be a valid VkDeferredOperationKHR object

  • VUID-vkCopyMemoryToAccelerationStructureKHR-deferredOperation-03678
    Any previous deferred operation that was associated with deferredOperation must be complete

  • VUID-vkCopyMemoryToAccelerationStructureKHR-pInfo-03729
    pInfo->src.hostAddress must be a valid host pointer

  • VUID-vkCopyMemoryToAccelerationStructureKHR-pInfo-03750
    pInfo->src.hostAddress must be aligned to 16 bytes

  • VUID-vkCopyMemoryToAccelerationStructureKHR-buffer-03730
    The buffer used to create pInfo->dst must be bound to host-visible device memory

  • VUID-vkCopyMemoryToAccelerationStructureKHR-accelerationStructureHostCommands-03583
    The VkPhysicalDeviceAccelerationStructureFeaturesKHR::accelerationStructureHostCommands feature must be enabled

  • VUID-vkCopyMemoryToAccelerationStructureKHR-buffer-03782
    The buffer used to create pInfo->dst must be bound to memory that was not allocated with multiple instances

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

  • VUID-vkCopyMemoryToAccelerationStructureKHR-deferredOperation-parameter
    If deferredOperation is not VK_NULL_HANDLE, deferredOperation must be a valid VkDeferredOperationKHR handle

  • VUID-vkCopyMemoryToAccelerationStructureKHR-pInfo-parameter
    pInfo must be a valid pointer to a valid VkCopyMemoryToAccelerationStructureInfoKHR structure

  • VUID-vkCopyMemoryToAccelerationStructureKHR-deferredOperation-parent
    If deferredOperation is a valid handle, it must have been created, allocated, or retrieved from device

Return Codes
On success, this command returns



On failure, this command returns


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 (c) 2014-2020 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0