C Specification

Possible values of type in VkAccelerationStructureMemoryRequirementsInfoKHR are:

// Provided by VK_KHR_ray_tracing
typedef enum VkAccelerationStructureMemoryRequirementsTypeKHR {
    VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_OBJECT_KHR = 0,
    VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_BUILD_SCRATCH_KHR = 1,
    VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_UPDATE_SCRATCH_KHR = 2,
  // Provided by VK_NV_ray_tracing
    VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_OBJECT_NV = VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_OBJECT_KHR,
  // Provided by VK_NV_ray_tracing
    VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_BUILD_SCRATCH_NV = VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_BUILD_SCRATCH_KHR,
  // Provided by VK_NV_ray_tracing
    VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_UPDATE_SCRATCH_NV = VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_UPDATE_SCRATCH_KHR,
} VkAccelerationStructureMemoryRequirementsTypeKHR;

or the equivalent

// Provided by VK_NV_ray_tracing
typedef VkAccelerationStructureMemoryRequirementsTypeKHR VkAccelerationStructureMemoryRequirementsTypeNV;

Description

  • VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_OBJECT_KHR requests the memory requirement for the VkAccelerationStructureKHR backing store.

  • VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_BUILD_SCRATCH_KHR requests the memory requirement for scratch space during the initial build.

  • VK_ACCELERATION_STRUCTURE_MEMORY_REQUIREMENTS_TYPE_UPDATE_SCRATCH_KHR requests the memory requirement for scratch space during an update.

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 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0