VK_NV_partitioned_acceleration_structure(3)

Name

VK_NV_partitioned_acceleration_structure - device extension

VK_NV_partitioned_acceleration_structure

Name String

VK_NV_partitioned_acceleration_structure

Extension Type

Device extension

Registered Extension Number

571

Revision

1

Ratification Status

Not ratified

Extension and Version Dependencies

VK_KHR_acceleration_structure

Contact
Extension Proposal

VK_NV_partitioned_acceleration_structure

Other Extension Metadata

Last Modified Date

2025-01-09

Contributors

  • Vikram Kushwaha, NVIDIA

  • Eric Werness, NVIDIA

  • Christoph Kubisch, NVIDIA

  • Jan Schmid, NVIDIA

  • Pyarelal Knowles, NVIDIA

Description

With an increase in scene complexity and expansive game worlds, the number of instances has surged in ray tracing over the last few years. The current Top Level Acceleration Structure (TLAS) API necessitates a full rebuild of the entire data structure even when only a few instances are modified.

This extension introduces Partitioned Top Level Acceleration Structures (PTLAS) as an alternative to the existing TLAS. PTLAS enables the efficient reuse of previously constructed parts of the acceleration structure, resulting in much faster build times and supporting a higher number of instances.

New Commands

New Structures

New Enums

New Bitmasks

New Enum Constants

Version History

  • Revision 1, 2025-01-09 (Vikram Kushwaha)

    • Initial draft

See Also

No cross-references are available

Document Notes

For more information, see the Vulkan Specification.

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.