VkAccelerationStructureGeometryLinearSweptSpheresDataNV

If VkAccelerationStructureGeometryLinearSweptSpheresDataNV is included in the pNext chain of a VkAccelerationStructureGeometryKHR structure, then that structures defines the linear swept sphere’s (LSS) geometry data.

The VkAccelerationStructureGeometryLinearSweptSpheresDataNV structure is defined as:

typedef struct VkAccelerationStructureGeometryLinearSweptSpheresDataNV {
    VkStructureType sType;
    const void* pNext;
    VkFormat vertexFormat;
    VkDeviceOrHostAddressConstKHR vertexData;
    VkDeviceSize vertexStride;
    VkFormat radiusFormat;
    VkDeviceOrHostAddressConstKHR radiusData;
    VkDeviceSize radiusStride;
    VkIndexType indexType;
    VkDeviceOrHostAddressConstKHR indexData;
    VkDeviceSize indexStride;
    VkRayTracingLssIndexingModeNV indexingMode;
    VkRayTracingLssPrimitiveEndCapsModeNV endCapsMode;
} VkAccelerationStructureGeometryLinearSweptSpheresDataNV;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• vertexFormat is the VkFormat of each LSS vertex element.
• vertexData is a device or host address to memory containing vertex data for this geometry.
• vertexStride is the stride in bytes between each vertex element.
• radiusFormat is the VkFormat of each LSS radius.
• radiusData is a device or host address to memory containing LSS radius data value.
• radiusStride is the stride in bytes between each radius value.
• indexType is the VkIndexType of each index element.
• indexData is NULL or a device or host address to memory containing index data for vertex and radius buffers for this geometry.
• indexStride is the stride in bytes between each index element.
• indexingMode is a VkRayTracingLssIndexingModeNV value specifying the mode of indexing.
• endCapsMode is a VkRayTracingLssPrimitiveEndCapsModeNV value specifying the endcaps mode for LSS primitives.

If an index buffer is not specified in indexData, LSS primitives are rendered individually using subsequent pairs of vertices similar to VK_PRIMITIVE_TOPOLOGY_LINE_LIST.

::