VK_NV_cluster_acceleration_structure(3)

Acceleration structure build times can become a bottleneck in ray tracing applications dealing with extensive dynamic geometry. This extension addresses the problem by enabling applications to construct bottom-level acceleration structures (BLAS) from pre-generated acceleration structures based on clusters of triangles (CLAS), leading to significant improvements in build times.

It provides a host-side query function to fetch the requirements and a versatile multi-indirect call for managing cluster geometry. This call enables applications to generate cluster geometry, construct Cluster BLAS from CLAS lists, and move or copy CLAS and BLAS. By sourcing inputs from device memory and processing multiple elements simultaneously, the call reduces the host-side costs associated with traditional acceleration structure functions.

This extension adds support for the following SPIR-V extension in Vulkan:

If VK_KHR_ray_tracing_pipeline is supported:

If VK_EXT_opacity_micromap is supported:

No cross-references are available

For more information, see the Vulkan Specification.

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