VkBuildPartitionedAccelerationStructureInfoNV

The VkBuildPartitionedAccelerationStructureInfoNV structure is defined as:

typedef struct VkBuildPartitionedAccelerationStructureInfoNV {
    VkStructureType sType;
    void* pNext;
    VkPartitionedAccelerationStructureInstancesInputNV input;
    VkDeviceAddress srcAccelerationStructureData;
    VkDeviceAddress dstAccelerationStructureData;
    VkDeviceAddress scratchData;
    VkDeviceAddress srcInfos;
    VkDeviceAddress srcInfosCount;
} VkBuildPartitionedAccelerationStructureInfoNV;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• input is a VkPartitionedAccelerationStructureInstancesInputNV structure describing the instance and partition count information in the PTLAS.
• srcAccelerationStructureData is NULL or an address of a previously built PTLAS. If non-NULL, the PTLAS stored at this address is used as a basis to create new PTLAS.
• dstAccelerationStructureData is the address to store the built PTLAS.
• scratchData is the device address of scratch memory that will be used during PTLAS build.
• srcInfos is the device address of an array of VkBuildPartitionedAccelerationStructureIndirectCommandNV structures describing the type of operation to perform.
• srcInfosCount is a device address containing the size of srcInfos array.

Members srcAccelerationStructureData and dstAccelerationStructureData may be the same or different. If they are the same, the update happens in-place. Otherwise, the destination acceleration structure is updated and the source is not modified.