C Specification

To copy an acceleration structure call:

// Provided by VK_NV_ray_tracing
void vkCmdCopyAccelerationStructureNV(
    VkCommandBuffer                             commandBuffer,
    VkAccelerationStructureKHR                  dst,
    VkAccelerationStructureKHR                  src,
    VkCopyAccelerationStructureModeKHR          mode);

Parameters

  • commandBuffer is the command buffer into which the command will be recorded.

  • dst is a pointer to the target acceleration structure for the copy.

  • src is a pointer to the source acceleration structure for the copy.

  • mode is a VkCopyAccelerationStructureModeKHR value specifying additional operations to perform during the copy.

Description

Valid Usage
  • VUID-vkCmdCopyAccelerationStructureNV-mode-03410
    mode must be VK_COPY_ACCELERATION_STRUCTURE_MODE_COMPACT_KHR or VK_COPY_ACCELERATION_STRUCTURE_MODE_CLONE_KHR

  • VUID-vkCmdCopyAccelerationStructureNV-src-03411
    src must have been built with VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_COMPACTION_BIT_KHR if mode is VK_COPY_ACCELERATION_STRUCTURE_MODE_COMPACT_KHR

Valid Usage (Implicit)
  • VUID-vkCmdCopyAccelerationStructureNV-commandBuffer-parameter
    commandBuffer must be a valid VkCommandBuffer handle

  • VUID-vkCmdCopyAccelerationStructureNV-dst-parameter
    dst must be a valid VkAccelerationStructureKHR handle

  • VUID-vkCmdCopyAccelerationStructureNV-src-parameter
    src must be a valid VkAccelerationStructureKHR handle

  • VUID-vkCmdCopyAccelerationStructureNV-mode-parameter
    mode must be a valid VkCopyAccelerationStructureModeKHR value

  • VUID-vkCmdCopyAccelerationStructureNV-commandBuffer-recording
    commandBuffer must be in the recording state

  • VUID-vkCmdCopyAccelerationStructureNV-commandBuffer-cmdpool
    The VkCommandPool that commandBuffer was allocated from must support compute operations

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

  • VUID-vkCmdCopyAccelerationStructureNV-commonparent
    Each of commandBuffer, dst, and src must have been created, allocated, or retrieved from the same VkDevice

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 Supported Queue Types Pipeline Type

Primary
Secondary

Outside

Compute

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