Contact
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Vikram Kushwaha [GitHub]vkushwaha
Other Extension Metadata
- Last Modified Date
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2025-01-09
- Contributors
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Vikram Kushwaha, NVIDIA
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Eric Werness, NVIDIA
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Christoph Kubisch, NVIDIA
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Jan Schmid, NVIDIA
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Pyarelal Knowles, NVIDIA
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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 Structures
New Enum Constants
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VK_NV_PARTITIONED_ACCELERATION_STRUCTURE_EXTENSION_NAME
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VK_NV_PARTITIONED_ACCELERATION_STRUCTURE_SPEC_VERSION
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VK_PARTITIONED_ACCELERATION_STRUCTURE_PARTITION_INDEX_GLOBAL_NV
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Extending VkDescriptorType:
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VK_DESCRIPTOR_TYPE_PARTITIONED_ACCELERATION_STRUCTURE_NV
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Extending VkStructureType:
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VK_STRUCTURE_TYPE_BUILD_PARTITIONED_ACCELERATION_STRUCTURE_INFO_NV
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VK_STRUCTURE_TYPE_PARTITIONED_ACCELERATION_STRUCTURE_FLAGS_NV
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VK_STRUCTURE_TYPE_PARTITIONED_ACCELERATION_STRUCTURE_INSTANCES_INPUT_NV
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VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PARTITIONED_ACCELERATION_STRUCTURE_FEATURES_NV
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VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PARTITIONED_ACCELERATION_STRUCTURE_PROPERTIES_NV
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VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET_PARTITIONED_ACCELERATION_STRUCTURE_NV
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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.