VkWriteDescriptorSetPartitionedAccelerationStructureNV(3)

Name

VkWriteDescriptorSetPartitionedAccelerationStructureNV - Structure specifying descriptor for PTLAS

C Specification

If the descriptorType member of VkWriteDescriptorSet is VK_DESCRIPTOR_TYPE_PARTITIONED_ACCELERATION_STRUCTURE_NV, then the data to write to the descriptor set is specified through a VkWriteDescriptorSetPartitionedAccelerationStructureNV structure included in the pNext chain of VkWriteDescriptorSet.

The VkWriteDescriptorSetPartitionedAccelerationStructureNV structure is defined as:

// Provided by VK_NV_partitioned_acceleration_structure
typedef struct VkWriteDescriptorSetPartitionedAccelerationStructureNV {
    VkStructureType           sType;
    void*                     pNext;
    uint32_t                  accelerationStructureCount;
    const VkDeviceAddress*    pAccelerationStructures;
} VkWriteDescriptorSetPartitionedAccelerationStructureNV;

Members

  • sType is a VkStructureType value identifying this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • accelerationStructureCount is the number of elements in pAccelerationStructures.

  • pAccelerationStructures is a pointer to an array of accelerationStructureCount device addresses pointing to previously built PTLAS.

Description

Valid Usage

  • VUID-VkWriteDescriptorSetPartitionedAccelerationStructureNV-accelerationStructureCount-10511
    accelerationStructureCount must be equal to descriptorCount in the extended structure

  • VUID-VkWriteDescriptorSetPartitionedAccelerationStructureNV-pAccelerationStructures-10512
    Each entry in pAccelerationStructures must be a valid address of a PTLAS

Valid Usage (Implicit)

  • VUID-VkWriteDescriptorSetPartitionedAccelerationStructureNV-sType-sType
    sType must be VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET_PARTITIONED_ACCELERATION_STRUCTURE_NV

  • VUID-VkWriteDescriptorSetPartitionedAccelerationStructureNV-pAccelerationStructures-parameter
    pAccelerationStructures must be a valid pointer to an array of accelerationStructureCount or VK_NULL_HANDLE VkDeviceAddress values

  • VUID-VkWriteDescriptorSetPartitionedAccelerationStructureNV-accelerationStructureCount-arraylength
    accelerationStructureCount must be greater than 0

See Also

VK_NV_partitioned_acceleration_structure, VkDeviceAddress, VkStructureType

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.