C Specification
Bits which can be set in VkAccelerationStructureInfoNV::flags
,
specifying additional parameters for acceleration structure builds, are:
typedef enum VkBuildAccelerationStructureFlagBitsNV {
VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_UPDATE_BIT_NV = 0x00000001,
VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_COMPACTION_BIT_NV = 0x00000002,
VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_NV = 0x00000004,
VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_BUILD_BIT_NV = 0x00000008,
VK_BUILD_ACCELERATION_STRUCTURE_LOW_MEMORY_BIT_NV = 0x00000010,
VK_BUILD_ACCELERATION_STRUCTURE_FLAG_BITS_MAX_ENUM_NV = 0x7FFFFFFF
} VkBuildAccelerationStructureFlagBitsNV;
Description
-
VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_UPDATE_BIT_NV
indicates that the specified acceleration structure can be updated withupdate
ofVK_TRUE
in vkCmdBuildAccelerationStructureNV. -
VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_COMPACTION_BIT_NV
indicates that the specified acceleration structure can act as the source for vkCmdCopyAccelerationStructureNV withmode
ofVK_COPY_ACCELERATION_STRUCTURE_MODE_COMPACT_NV
to produce a compacted acceleration structure. -
VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_NV
indicates that the given acceleration structure build should prioritize trace performance over build time. -
VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_BUILD_BIT_NV
indicates that the given acceleration structure build should prioritize build time over trace performance. -
VK_BUILD_ACCELERATION_STRUCTURE_LOW_MEMORY_BIT_NV
indicates that this acceleration structure should minimize the size of the scratch memory and the final result build, potentially at the expense of build time or trace performance.
Note
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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
Copyright (c) 2014-2019 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.