vkCmdBuildPartitionedAccelerationStructuresNV

To build a partitioned top level acceleration structure, call:

void vkCmdBuildPartitionedAccelerationStructuresNV(
    VkCommandBuffer                     commandBuffer,
    const VkBuildPartitionedAccelerationStructureInfoNV*  pBuildInfo);

• commandBuffer is the command buffer into which the command is recorded.
• pBuildInfo is a pointer to a VkBuildPartitionedAccelerationStructureInfoNV structure containing parameters required for building a PTLAS.

Accesses to the acceleration structure scratch memory as identified by the VkBuildPartitionedAccelerationStructureInfoNV::scratchData must be synchronized with the VK_PIPELINE_STAGE_ACCELERATION_STRUCTURE_BUILD_BIT_KHR

pipeline stage and an access type of (VK_ACCESS_ACCELERATION_STRUCTURE_READ_BIT_KHR | VK_ACCESS_ACCELERATION_STRUCTURE_WRITE_BIT_KHR).

Accesses to each VkBuildPartitionedAccelerationStructureInfoNV::srcAccelerationStructureData and VkBuildPartitionedAccelerationStructureInfoNV::dstAccelerationStructureDatamust be synchronized with 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.

Accesses to memory with input data as identified by any used values of VkBuildPartitionedAccelerationStructureInfoNV::srcInfos and VkBuildPartitionedAccelerationStructureInfoNV::srcInfosCountmust be synchronized with the VK_PIPELINE_STAGE_ACCELERATION_STRUCTURE_BUILD_BIT_KHR

pipeline stage and an access type of VK_ACCESS_INDIRECT_COMMAND_READ_BIT.