C Specification
To build an acceleration structure call:
// Provided by VK_NV_ray_tracing
void vkCmdBuildAccelerationStructureNV(
VkCommandBuffer commandBuffer,
const VkAccelerationStructureInfoNV* pInfo,
VkBuffer instanceData,
VkDeviceSize instanceOffset,
VkBool32 update,
VkAccelerationStructureKHR dst,
VkAccelerationStructureKHR src,
VkBuffer scratch,
VkDeviceSize scratchOffset);
Parameters
-
commandBuffer
is the command buffer into which the command will be recorded. -
pInfo
contains the shared information for the acceleration structure’s structure. -
instanceData
is the buffer containing an array of VkAccelerationStructureInstanceKHR structures defining acceleration structures. This parameter must beNULL
for bottom level acceleration structures. -
instanceOffset
is the offset in bytes (relative to the start ofinstanceData
) at which the instance data is located. -
update
specifies whether to update thedst
acceleration structure with the data insrc
. -
dst
is a pointer to the target acceleration structure for the build. -
src
is a pointer to an existing acceleration structure that is to be used to update thedst
acceleration structure. -
scratch
is the VkBuffer that will be used as scratch memory for the build. -
scratchOffset
is the offset in bytes relative to the start ofscratch
that will be used as a scratch memory.
See Also
VkAccelerationStructureInfoNV, VkAccelerationStructureKHR, VkBool32
, VkBuffer, VkCommandBuffer, VkDeviceSize
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) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.