286 lines
10 KiB
C++
286 lines
10 KiB
C++
// Copyright 2009-2021 Intel Corporation
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "bvh.h"
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#include <sstream>
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namespace embree
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{
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template<int N>
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class BVHNStatistics
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{
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typedef BVHN<N> BVH;
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typedef typename BVH::AABBNode AABBNode;
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typedef typename BVH::OBBNode OBBNode;
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typedef typename BVH::AABBNodeMB AABBNodeMB;
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typedef typename BVH::AABBNodeMB4D AABBNodeMB4D;
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typedef typename BVH::OBBNodeMB OBBNodeMB;
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typedef typename BVH::QuantizedNode QuantizedNode;
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typedef typename BVH::NodeRef NodeRef;
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struct Statistics
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{
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template<typename Node>
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struct NodeStat
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{
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NodeStat ( double nodeSAH = 0,
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size_t numNodes = 0,
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size_t numChildren = 0)
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: nodeSAH(nodeSAH),
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numNodes(numNodes),
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numChildren(numChildren) {}
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double sah(BVH* bvh) const {
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return nodeSAH/bvh->getLinearBounds().expectedHalfArea();
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}
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size_t bytes() const {
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return numNodes*sizeof(Node);
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}
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size_t size() const {
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return numNodes;
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}
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double fillRateNom () const { return double(numChildren); }
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double fillRateDen () const { return double(numNodes*N); }
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double fillRate () const { return fillRateNom()/fillRateDen(); }
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__forceinline friend NodeStat operator+ ( const NodeStat& a, const NodeStat& b)
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{
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return NodeStat(a.nodeSAH + b.nodeSAH,
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a.numNodes+b.numNodes,
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a.numChildren+b.numChildren);
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}
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std::string toString(BVH* bvh, double sahTotal, size_t bytesTotal) const
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{
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std::ostringstream stream;
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stream.setf(std::ios::fixed, std::ios::floatfield);
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stream << "sah = " << std::setw(7) << std::setprecision(3) << sah(bvh);
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stream << " (" << std::setw(6) << std::setprecision(2) << 100.0*sah(bvh)/sahTotal << "%), ";
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stream << "#bytes = " << std::setw(7) << std::setprecision(2) << bytes()/1E6 << " MB ";
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stream << "(" << std::setw(6) << std::setprecision(2) << 100.0*double(bytes())/double(bytesTotal) << "%), ";
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stream << "#nodes = " << std::setw(7) << numNodes << " (" << std::setw(6) << std::setprecision(2) << 100.0*fillRate() << "% filled), ";
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stream << "#bytes/prim = " << std::setw(6) << std::setprecision(2) << double(bytes())/double(bvh->numPrimitives);
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return stream.str();
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}
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public:
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double nodeSAH;
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size_t numNodes;
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size_t numChildren;
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};
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struct LeafStat
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{
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static const int NHIST = 8;
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LeafStat ( double leafSAH = 0.0f,
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size_t numLeaves = 0,
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size_t numPrimsActive = 0,
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size_t numPrimsTotal = 0,
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size_t numPrimBlocks = 0,
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size_t numBytes = 0)
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: leafSAH(leafSAH),
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numLeaves(numLeaves),
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numPrimsActive(numPrimsActive),
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numPrimsTotal(numPrimsTotal),
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numPrimBlocks(numPrimBlocks),
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numBytes(numBytes)
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{
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for (size_t i=0; i<NHIST; i++)
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numPrimBlocksHistogram[i] = 0;
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}
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double sah(BVH* bvh) const {
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return leafSAH/bvh->getLinearBounds().expectedHalfArea();
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}
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size_t bytes(BVH* bvh) const {
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return numBytes;
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}
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size_t size() const {
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return numLeaves;
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}
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double fillRateNom (BVH* bvh) const { return double(numPrimsActive); }
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double fillRateDen (BVH* bvh) const { return double(numPrimsTotal); }
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double fillRate (BVH* bvh) const { return fillRateNom(bvh)/fillRateDen(bvh); }
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__forceinline friend LeafStat operator+ ( const LeafStat& a, const LeafStat& b)
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{
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LeafStat stat(a.leafSAH + b.leafSAH,
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a.numLeaves+b.numLeaves,
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a.numPrimsActive+b.numPrimsActive,
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a.numPrimsTotal+b.numPrimsTotal,
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a.numPrimBlocks+b.numPrimBlocks,
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a.numBytes+b.numBytes);
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for (size_t i=0; i<NHIST; i++) {
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stat.numPrimBlocksHistogram[i] += a.numPrimBlocksHistogram[i];
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stat.numPrimBlocksHistogram[i] += b.numPrimBlocksHistogram[i];
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}
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return stat;
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}
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std::string toString(BVH* bvh, double sahTotal, size_t bytesTotal) const
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{
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std::ostringstream stream;
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stream.setf(std::ios::fixed, std::ios::floatfield);
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stream << "sah = " << std::setw(7) << std::setprecision(3) << sah(bvh);
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stream << " (" << std::setw(6) << std::setprecision(2) << 100.0*sah(bvh)/sahTotal << "%), ";
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stream << "#bytes = " << std::setw(7) << std::setprecision(2) << double(bytes(bvh))/1E6 << " MB ";
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stream << "(" << std::setw(6) << std::setprecision(2) << 100.0*double(bytes(bvh))/double(bytesTotal) << "%), ";
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stream << "#nodes = " << std::setw(7) << numLeaves << " (" << std::setw(6) << std::setprecision(2) << 100.0*fillRate(bvh) << "% filled), ";
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stream << "#bytes/prim = " << std::setw(6) << std::setprecision(2) << double(bytes(bvh))/double(bvh->numPrimitives);
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return stream.str();
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}
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std::string histToString() const
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{
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std::ostringstream stream;
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stream.setf(std::ios::fixed, std::ios::floatfield);
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for (size_t i=0; i<NHIST; i++)
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stream << std::setw(6) << std::setprecision(2) << 100.0f*float(numPrimBlocksHistogram[i])/float(numLeaves) << "% ";
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return stream.str();
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}
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public:
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double leafSAH; //!< SAH of the leaves only
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size_t numLeaves; //!< Number of leaf nodes.
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size_t numPrimsActive; //!< Number of active primitives (
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size_t numPrimsTotal; //!< Number of active and inactive primitives
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size_t numPrimBlocks; //!< Number of primitive blocks.
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size_t numBytes; //!< Number of bytes of leaves.
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size_t numPrimBlocksHistogram[8];
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};
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public:
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Statistics (size_t depth = 0,
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LeafStat statLeaf = LeafStat(),
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NodeStat<AABBNode> statAABBNodes = NodeStat<AABBNode>(),
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NodeStat<OBBNode> statOBBNodes = NodeStat<OBBNode>(),
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NodeStat<AABBNodeMB> statAABBNodesMB = NodeStat<AABBNodeMB>(),
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NodeStat<AABBNodeMB4D> statAABBNodesMB4D = NodeStat<AABBNodeMB4D>(),
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NodeStat<OBBNodeMB> statOBBNodesMB = NodeStat<OBBNodeMB>(),
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NodeStat<QuantizedNode> statQuantizedNodes = NodeStat<QuantizedNode>())
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: depth(depth),
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statLeaf(statLeaf),
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statAABBNodes(statAABBNodes),
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statOBBNodes(statOBBNodes),
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statAABBNodesMB(statAABBNodesMB),
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statAABBNodesMB4D(statAABBNodesMB4D),
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statOBBNodesMB(statOBBNodesMB),
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statQuantizedNodes(statQuantizedNodes) {}
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double sah(BVH* bvh) const
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{
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return statLeaf.sah(bvh) +
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statAABBNodes.sah(bvh) +
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statOBBNodes.sah(bvh) +
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statAABBNodesMB.sah(bvh) +
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statAABBNodesMB4D.sah(bvh) +
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statOBBNodesMB.sah(bvh) +
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statQuantizedNodes.sah(bvh);
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}
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size_t bytes(BVH* bvh) const {
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return statLeaf.bytes(bvh) +
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statAABBNodes.bytes() +
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statOBBNodes.bytes() +
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statAABBNodesMB.bytes() +
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statAABBNodesMB4D.bytes() +
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statOBBNodesMB.bytes() +
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statQuantizedNodes.bytes();
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}
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size_t size() const
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{
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return statLeaf.size() +
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statAABBNodes.size() +
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statOBBNodes.size() +
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statAABBNodesMB.size() +
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statAABBNodesMB4D.size() +
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statOBBNodesMB.size() +
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statQuantizedNodes.size();
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}
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double fillRate (BVH* bvh) const
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{
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double nom = statLeaf.fillRateNom(bvh) +
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statAABBNodes.fillRateNom() +
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statOBBNodes.fillRateNom() +
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statAABBNodesMB.fillRateNom() +
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statAABBNodesMB4D.fillRateNom() +
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statOBBNodesMB.fillRateNom() +
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statQuantizedNodes.fillRateNom();
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double den = statLeaf.fillRateDen(bvh) +
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statAABBNodes.fillRateDen() +
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statOBBNodes.fillRateDen() +
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statAABBNodesMB.fillRateDen() +
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statAABBNodesMB4D.fillRateDen() +
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statOBBNodesMB.fillRateDen() +
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statQuantizedNodes.fillRateDen();
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return nom/den;
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}
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friend Statistics operator+ ( const Statistics& a, const Statistics& b )
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{
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return Statistics(max(a.depth,b.depth),
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a.statLeaf + b.statLeaf,
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a.statAABBNodes + b.statAABBNodes,
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a.statOBBNodes + b.statOBBNodes,
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a.statAABBNodesMB + b.statAABBNodesMB,
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a.statAABBNodesMB4D + b.statAABBNodesMB4D,
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a.statOBBNodesMB + b.statOBBNodesMB,
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a.statQuantizedNodes + b.statQuantizedNodes);
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}
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static Statistics add ( const Statistics& a, const Statistics& b ) {
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return a+b;
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}
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public:
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size_t depth;
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LeafStat statLeaf;
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NodeStat<AABBNode> statAABBNodes;
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NodeStat<OBBNode> statOBBNodes;
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NodeStat<AABBNodeMB> statAABBNodesMB;
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NodeStat<AABBNodeMB4D> statAABBNodesMB4D;
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NodeStat<OBBNodeMB> statOBBNodesMB;
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NodeStat<QuantizedNode> statQuantizedNodes;
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};
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public:
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/* Constructor gathers statistics. */
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BVHNStatistics (BVH* bvh);
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/*! Convert statistics into a string */
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std::string str();
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double sah() const {
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return stat.sah(bvh);
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}
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size_t bytesUsed() const {
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return stat.bytes(bvh);
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}
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private:
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Statistics statistics(NodeRef node, const double A, const BBox1f dt);
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private:
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BVH* bvh;
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Statistics stat;
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};
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typedef BVHNStatistics<4> BVH4Statistics;
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typedef BVHNStatistics<8> BVH8Statistics;
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}
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