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C Specification

Values which can be set in VkAccelerationStructureCreateInfoKHR::type or VkAccelerationStructureInfoNV::type specifying the type of acceleration structure, are:

typedef enum VkAccelerationStructureTypeKHR {
    VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR = 0,
    VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR = 1,
    VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_NV = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR,
    VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_NV = VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR,
} VkAccelerationStructureTypeKHR;

or the equivalent

typedef VkAccelerationStructureTypeKHR VkAccelerationStructureTypeNV;

Description

  • VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR is a top-level acceleration structure containing instance data referring to bottom-level acceleration structures.

  • VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR is a bottom-level acceleration structure containing the AABBs or geometry to be intersected.

See Also

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.

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.