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++ // Copyright 2009-2021 Intel Corporation
++ // SPDX-License-Identifier: Apache-2.0
++
++ #include "bvh_statistics.h"
++ #include "../../common/algorithms/parallel_reduce.h"
++
++ namespace embree
++ {
++ template<int N>
++ BVHNStatistics<N>::BVHNStatistics (BVH* bvh) : bvh(bvh)
++ {
++ double A = max(0.0f,bvh->getLinearBounds().expectedHalfArea());
++ stat = statistics(bvh->root,A,BBox1f(0.0f,1.0f));
++ }
++
++ template<int N>
++ std::string BVHNStatistics<N>::str()
++ {
++ std::ostringstream stream;
++ stream.setf(std::ios::fixed, std::ios::floatfield);
++ stream << " primitives = " << bvh->numPrimitives << ", vertices = " << bvh->numVertices << ", depth = " << stat.depth << std::endl;
++ size_t totalBytes = stat.bytes(bvh);
++ double totalSAH = stat.sah(bvh);
++ stream << " total : sah = " << std::setw(7) << std::setprecision(3) << totalSAH << " (100.00%), ";
++ stream << "#bytes = " << std::setw(7) << std::setprecision(2) << totalBytes/1E6 << " MB (100.00%), ";
++ stream << "#nodes = " << std::setw(7) << stat.size() << " (" << std::setw(6) << std::setprecision(2) << 100.0*stat.fillRate(bvh) << "% filled), ";
++ stream << "#bytes/prim = " << std::setw(6) << std::setprecision(2) << double(totalBytes)/double(bvh->numPrimitives) << std::endl;
++ if (stat.statAABBNodes.numNodes ) stream << " getAABBNodes : " << stat.statAABBNodes.toString(bvh,totalSAH,totalBytes) << std::endl;
++ if (stat.statOBBNodes.numNodes ) stream << " ungetAABBNodes : " << stat.statOBBNodes.toString(bvh,totalSAH,totalBytes) << std::endl;
++ if (stat.statAABBNodesMB.numNodes ) stream << " getAABBNodesMB : " << stat.statAABBNodesMB.toString(bvh,totalSAH,totalBytes) << std::endl;
++ if (stat.statAABBNodesMB4D.numNodes) stream << " getAABBNodesMB4D : " << stat.statAABBNodesMB4D.toString(bvh,totalSAH,totalBytes) << std::endl;
++ if (stat.statOBBNodesMB.numNodes) stream << " ungetAABBNodesMB : " << stat.statOBBNodesMB.toString(bvh,totalSAH,totalBytes) << std::endl;
++ if (stat.statQuantizedNodes.numNodes ) stream << " quantizedNodes : " << stat.statQuantizedNodes.toString(bvh,totalSAH,totalBytes) << std::endl;
++ if (true) stream << " leaves : " << stat.statLeaf.toString(bvh,totalSAH,totalBytes) << std::endl;
++ if (true) stream << " histogram : " << stat.statLeaf.histToString() << std::endl;
++ return stream.str();
++ }
++
++ template<int N>
++ typename BVHNStatistics<N>::Statistics BVHNStatistics<N>::statistics(NodeRef node, const double A, const BBox1f t0t1)
++ {
++ Statistics s;
++ assert(t0t1.size() > 0.0f);
++ double dt = max(0.0f,t0t1.size());
++ if (node.isAABBNode())
++ {
++ AABBNode* n = node.getAABBNode();
++ s = s + parallel_reduce(0,N,Statistics(),[&] ( const int i ) {
++ if (n->child(i) == BVH::emptyNode) return Statistics();
++ const double Ai = max(0.0f,halfArea(n->extend(i)));
++ Statistics s = statistics(n->child(i),Ai,t0t1);
++ s.statAABBNodes.numChildren++;
++ return s;
++ }, Statistics::add);
++ s.statAABBNodes.numNodes++;
++ s.statAABBNodes.nodeSAH += dt*A;
++ s.depth++;
++ }
++ else if (node.isOBBNode())
++ {
++ OBBNode* n = node.ungetAABBNode();
++ s = s + parallel_reduce(0,N,Statistics(),[&] ( const int i ) {
++ if (n->child(i) == BVH::emptyNode) return Statistics();
++ const double Ai = max(0.0f,halfArea(n->extent(i)));
++ Statistics s = statistics(n->child(i),Ai,t0t1);
++ s.statOBBNodes.numChildren++;
++ return s;
++ }, Statistics::add);
++ s.statOBBNodes.numNodes++;
++ s.statOBBNodes.nodeSAH += dt*A;
++ s.depth++;
++ }
++ else if (node.isAABBNodeMB())
++ {
++ AABBNodeMB* n = node.getAABBNodeMB();
++ s = s + parallel_reduce(0,N,Statistics(),[&] ( const int i ) {
++ if (n->child(i) == BVH::emptyNode) return Statistics();
++ const double Ai = max(0.0f,n->expectedHalfArea(i,t0t1));
++ Statistics s = statistics(n->child(i),Ai,t0t1);
++ s.statAABBNodesMB.numChildren++;
++ return s;
++ }, Statistics::add);
++ s.statAABBNodesMB.numNodes++;
++ s.statAABBNodesMB.nodeSAH += dt*A;
++ s.depth++;
++ }
++ else if (node.isAABBNodeMB4D())
++ {
++ AABBNodeMB4D* n = node.getAABBNodeMB4D();
++ s = s + parallel_reduce(0,N,Statistics(),[&] ( const int i ) {
++ if (n->child(i) == BVH::emptyNode) return Statistics();
++ const BBox1f t0t1i = intersect(t0t1,n->timeRange(i));
++ assert(!t0t1i.empty());
++ const double Ai = n->AABBNodeMB::expectedHalfArea(i,t0t1i);
++ Statistics s = statistics(n->child(i),Ai,t0t1i);
++ s.statAABBNodesMB4D.numChildren++;
++ return s;
++ }, Statistics::add);
++ s.statAABBNodesMB4D.numNodes++;
++ s.statAABBNodesMB4D.nodeSAH += dt*A;
++ s.depth++;
++ }
++ else if (node.isOBBNodeMB())
++ {
++ OBBNodeMB* n = node.ungetAABBNodeMB();
++ s = s + parallel_reduce(0,N,Statistics(),[&] ( const int i ) {
++ if (n->child(i) == BVH::emptyNode) return Statistics();
++ const double Ai = max(0.0f,halfArea(n->extent0(i)));
++ Statistics s = statistics(n->child(i),Ai,t0t1);
++ s.statOBBNodesMB.numChildren++;
++ return s;
++ }, Statistics::add);
++ s.statOBBNodesMB.numNodes++;
++ s.statOBBNodesMB.nodeSAH += dt*A;
++ s.depth++;
++ }
++ else if (node.isQuantizedNode())
++ {
++ QuantizedNode* n = node.quantizedNode();
++ s = s + parallel_reduce(0,N,Statistics(),[&] ( const int i ) {
++ if (n->child(i) == BVH::emptyNode) return Statistics();
++ const double Ai = max(0.0f,halfArea(n->extent(i)));
++ Statistics s = statistics(n->child(i),Ai,t0t1);
++ s.statQuantizedNodes.numChildren++;
++ return s;
++ }, Statistics::add);
++ s.statQuantizedNodes.numNodes++;
++ s.statQuantizedNodes.nodeSAH += dt*A;
++ s.depth++;
++ }
++ else if (node.isLeaf())
++ {
++ size_t num; const char* tri = node.leaf(num);
++ if (num)
++ {
++ for (size_t i=0; i<num; i++)
++ {
++ const size_t bytes = bvh->primTy->getBytes(tri);
++ s.statLeaf.numPrimsActive += bvh->primTy->sizeActive(tri);
++ s.statLeaf.numPrimsTotal += bvh->primTy->sizeTotal(tri);
++ s.statLeaf.numBytes += bytes;
++ tri+=bytes;
++ }
++ s.statLeaf.numLeaves++;
++ s.statLeaf.numPrimBlocks += num;
++ s.statLeaf.leafSAH += dt*A*num;
++ if (num-1 < Statistics::LeafStat::NHIST) {
++ s.statLeaf.numPrimBlocksHistogram[num-1]++;
++ }
++ }
++ }
++ else {
++ throw std::runtime_error("not supported node type in bvh_statistics");
++ }
++ return s;
++ }
++
++ #if defined(__AVX__)
++ template class BVHNStatistics<8>;
++ #endif
++
++ #if !defined(__AVX__) || !defined(EMBREE_TARGET_SSE2) && !defined(EMBREE_TARGET_SSE42)
++ template class BVHNStatistics<4>;
++ #endif
++ }