C Specification

Geometry types are specified by VkGeometryTypeKHR, which takes values:

// Provided by VK_KHR_acceleration_structure
typedef enum VkGeometryTypeKHR {
    VK_GEOMETRY_TYPE_TRIANGLES_KHR = 0,
    VK_GEOMETRY_TYPE_AABBS_KHR = 1,
    VK_GEOMETRY_TYPE_INSTANCES_KHR = 2,
  // Provided by VK_NV_ray_tracing_linear_swept_spheres
    VK_GEOMETRY_TYPE_SPHERES_NV = 1000429004,
  // Provided by VK_NV_ray_tracing_linear_swept_spheres
    VK_GEOMETRY_TYPE_LINEAR_SWEPT_SPHERES_NV = 1000429005,
#ifdef VK_ENABLE_BETA_EXTENSIONS
  // Provided by VK_AMDX_dense_geometry_format
    VK_GEOMETRY_TYPE_DENSE_GEOMETRY_FORMAT_TRIANGLES_AMDX = 1000478000,
#endif
  // Provided by VK_NV_ray_tracing
    VK_GEOMETRY_TYPE_TRIANGLES_NV = VK_GEOMETRY_TYPE_TRIANGLES_KHR,
  // Provided by VK_NV_ray_tracing
    VK_GEOMETRY_TYPE_AABBS_NV = VK_GEOMETRY_TYPE_AABBS_KHR,
} VkGeometryTypeKHR;

or the equivalent

// Provided by VK_NV_ray_tracing
typedef VkGeometryTypeKHR VkGeometryTypeNV;

Description

  • VK_GEOMETRY_TYPE_TRIANGLES_KHR specifies a geometry type consisting of triangles.

  • VK_GEOMETRY_TYPE_AABBS_KHR specifies a geometry type consisting of axis-aligned bounding boxes.

  • VK_GEOMETRY_TYPE_INSTANCES_KHR specifies a geometry type consisting of acceleration structure instances.

  • VK_GEOMETRY_TYPE_DENSE_GEOMETRY_FORMAT_TRIANGLES_AMDX specifies a geometry type consisting of triangles from compressed data.

  • VK_GEOMETRY_TYPE_SPHERES_NV specifies a geometry type consisting of spheres.

  • VK_GEOMETRY_TYPE_LINEAR_SWEPT_SPHERES_NV specifies a geometry type consisting of linear swept spheres.

See Also

VK_KHR_acceleration_structure, VK_NV_ray_tracing, VkAccelerationStructureGeometryKHR, VkGeometryNV

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

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0