vkCmdCopyAccelerationStructureNV(3)

C Specification

To copy an acceleration structure call:

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

Parameters

commandBuffer is the command buffer into which the command will be recorded.
dst is the target acceleration structure for the copy.
src is the source acceleration structure for the copy.
mode is a VkCopyAccelerationStructureModeKHR value specifying additional operations to perform during the copy.

Description

Accesses to src and dst must be synchronized with the VK_PIPELINE_STAGE_2_ACCELERATION_STRUCTURE_COPY_BIT_KHR pipeline stage or the VK_PIPELINE_STAGE_ACCELERATION_STRUCTURE_BUILD_BIT_KHR pipeline stage, and an access type of VK_ACCESS_ACCELERATION_STRUCTURE_READ_BIT_KHR or VK_ACCESS_ACCELERATION_STRUCTURE_WRITE_BIT_KHR as appropriate.

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-04963
The source acceleration structure src must have been constructed prior to the execution of this command
VUID-vkCmdCopyAccelerationStructureNV-src-03411
If mode is VK_COPY_ACCELERATION_STRUCTURE_MODE_COMPACT_KHR, src must have been constructed with VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_COMPACTION_BIT_KHR in the build
VUID-vkCmdCopyAccelerationStructureNV-buffer-03718
The buffer used to create src must be bound to device memory
VUID-vkCmdCopyAccelerationStructureNV-buffer-03719
The buffer used to create dst must be bound to device memory
VUID-vkCmdCopyAccelerationStructureNV-dst-07791
The range of memory backing dst that is accessed by this command must not overlap the memory backing src that is accessed by this command
VUID-vkCmdCopyAccelerationStructureNV-dst-07792
dst must be bound completely and contiguously to a single VkDeviceMemory object via vkBindAccelerationStructureMemoryNV

Valid Usage (Implicit)

VUID-vkCmdCopyAccelerationStructureNV-commandBuffer-parameter
commandBuffer must be a valid VkCommandBuffer handle
VUID-vkCmdCopyAccelerationStructureNV-dst-parameter
dst must be a valid VkAccelerationStructureNV handle
VUID-vkCmdCopyAccelerationStructureNV-src-parameter
src must be a valid VkAccelerationStructureNV 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-videocoding
This command must only be called outside of a video coding scope
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