C Specification

An acceleration structure has memory requirements for the structure object itself, scratch space for the build, and scratch space for the update.

To query the memory requirements call:

void vkGetAccelerationStructureMemoryRequirementsNV(
    VkDevice                                    device,
    const VkAccelerationStructureMemoryRequirementsInfoNV* pInfo,
    VkMemoryRequirements2KHR*                   pMemoryRequirements);


  • device is the logical device on which the acceleration structure was created.

  • pInfo specifies the acceleration structure to get memory requirements for.

  • pMemoryRequirements returns the requested acceleration structure memory requirements.


Valid Usage (Implicit)
  • device must be a valid VkDevice handle

  • pInfo must be a valid pointer to a valid VkAccelerationStructureMemoryRequirementsInfoNV structure

  • pMemoryRequirements must be a valid pointer to a VkMemoryRequirements2KHR structure

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) 2014-2019 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.