C Specification
To determine the memory requirements for a PTAS, call:
// Provided by VK_NV_partitioned_acceleration_structure
void vkGetPartitionedAccelerationStructuresBuildSizesNV(
VkDevice device,
const VkPartitionedAccelerationStructureInstancesInputNV* pInfo,
VkAccelerationStructureBuildSizesInfoKHR* pSizeInfo);
Parameters
-
device
is the logical device that owns the acceleration structure. -
pInfo
is a pointer to a VkPartitionedAccelerationStructureInstancesInputNV structure containing parameters required for the memory requirements query. -
pSizeInfo
is a pointer to a VkAccelerationStructureBuildSizesInfoKHR structure which returns the size required for an acceleration structure and the sizes required for the scratch buffers, given the build parameters.
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.