vkCreateAccelerationStructureNV

To create acceleration structures, call:

VkResult vkCreateAccelerationStructureNV(
    VkDevice device,
    const VkAccelerationStructureCreateInfoNV* pCreateInfo,
    const VkAllocationCallbacks* pAllocator,
    VkAccelerationStructureNV* pAccelerationStructure);

• device is the logical device that creates the buffer object.
• pCreateInfo is a pointer to a VkAccelerationStructureCreateInfoNV structure containing parameters affecting creation of the acceleration structure.
• pAllocator controls host memory allocation as described in the Memory Allocation chapter.
• pAccelerationStructure is a pointer to a VkAccelerationStructureNV handle in which the resulting acceleration structure object is returned.

Similarly to other objects in Vulkan, the acceleration structure creation merely creates an object with a specific shape as specified by the information in VkAccelerationStructureInfoNV and compactedSize in pCreateInfo.

Once memory has been bound to the acceleration structure using vkBindAccelerationStructureMemoryNV, that memory is populated by calls to vkCmdBuildAccelerationStructureNV and vkCmdCopyAccelerationStructureNV.

Acceleration structure creation uses the count and type information from the geometries, but does not use the data references in the structures.