nih::cuda::Binned_sah_builder Struct Reference

Detailed description

GPU-based binned SAH BVH builder.

This builders provides the context to generate a bounding volume hierarchy using the binned Surface Area Heuristic out of a generic set of unsorted bounding boxes.

#include <binned_sah_builder.h>

Public Types
typedef binned_sah::Bin	Bin
typedef binned_sah::Bbox	Bbox
typedef binned_sah::Split	Split
typedef binned_sah::Queue	Queue
typedef binned_sah::Objects	Objects
typedef binned_sah::Bins	Bins

Public Methods
	Binned_sah_builder (thrust::device_vector< Bvh_node > &nodes, thrust::device_vector< uint2 > &leaves, thrust::device_vector< uint32 > &index)
template<typename Iterator >
void	build (const uint32 BINS, const Bbox3f bbox, const Iterator bbox_begin, const Iterator bbox_end, const Iterator h_bbox_begin, const uint32 max_leaf_size, const float max_cost=1.8f)

Public Members
thrust::device_vector< Bvh_node > *	m_nodes
thrust::device_vector< uint2 > *	m_leaves
thrust::device_vector< uint32 > *	m_index
uint32	m_levels [128]
uint32	m_level_count
Bbox3f	m_bbox
uint32	m_node_count
uint32	m_leaf_count
float	m_init_bins_time
float	m_update_bins_time
float	m_sah_split_time
float	m_distribute_objects_time
thrust::device_vector< float3 >	m_bin_bmin
thrust::device_vector< float3 >	m_bin_bmax
thrust::device_vector< int32 >	m_bin_size
thrust::device_vector< Bin >	m_queue_bins
thrust::device_vector< Split >	m_queue_splits
thrust::device_vector< uint32 >	m_queue_offsets
thrust::device_vector< int4 >	m_bin_ids
thrust::device_vector< int32 >	m_split_ids
thrust::device_vector< int32 >	m_node_ids
thrust::device_vector< uint32 >	m_new_pos
thrust::device_vector< uint32 >	m_counters

Constructor & Destructor Documentation

Binned_sah_builder()

nih::cuda::Binned_sah_builder::Binned_sah_builder ( thrust::device_vector< Bvh_node > &  nodes, thrust::device_vector< uint2 > &  leaves, thrust::device_vector< uint32 > &  index  )

inline

constructor

Parameters

nodes	output nodes array
leaves	output leaf array
index	output index array

Member Function Documentation

build()

template<typename Iterator >

void nih::cuda::Binned_sah_builder::build	(	const uint32	BINS,
		const Bbox3f	bbox,
		const Iterator	bbox_begin,
		const Iterator	bbox_end,
		const Iterator	h_bbox_begin,
		const uint32	max_leaf_size,
		const float	max_cost = 1.8f
	)

build a bvh given a set of bboxes

Parameters

BINS	number of bins to use
bbox	global bbox
bbox_begin	beginning of the bbox sequence
bbox_end	end of the bbox sequence
max_leaf_size	maximum leaf size
max_cost	maximum cost relative to the parent

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The documentation for this struct was generated from the following files:

• C:/p4research/research/jpantaleoni/Fermat-Public/contrib/cugar/bvh/cuda/binned_sah_builder.h
• C:/p4research/research/jpantaleoni/Fermat-Public/contrib/cugar/bvh/cuda/binned_sah_builder_inline.h