typename BVHNStatistics<N>::Statistics BVHNStatistics<N>::statistics(NodeRef node, const double A, const BBox1f t0t1)
{
Statistics s;
double dt = max(0.0f,t0t1.size());
if (node.isAlignedNode())
{
AlignedNode* n = node.alignedNode();
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
s.statAlignedNodes.numChildren++;
const double Ai = max(0.0f,halfArea(n->extend(i)));
s = s + statistics(n->child(i),Ai,t0t1);
}
s.statAlignedNodes.numNodes++;
s.statAlignedNodes.nodeSAH += dt*A;
s.depth++;
}
else if (node.isUnalignedNode())
{
UnalignedNode* n = node.unalignedNode();
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
s.statUnalignedNodes.numChildren++;
const double Ai = max(0.0f,halfArea(n->extend(i)));
s = s + statistics(n->child(i),Ai,t0t1);
}
s.statUnalignedNodes.numNodes++;
s.statUnalignedNodes.nodeSAH += dt*A;
s.depth++;
}
else if (node.isAlignedNodeMB())
{
AlignedNodeMB* n = node.alignedNodeMB();
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
s.statAlignedNodesMB.numChildren++;
const double Ai = max(0.0f,halfArea(n->extend0(i)));
s = s + statistics(n->child(i),Ai,t0t1);
}
s.statAlignedNodesMB.numNodes++;
s.statAlignedNodesMB.nodeSAH += dt*A;
s.depth++;
}
else if (node.isUnalignedNodeMB())
{
UnalignedNodeMB* n = node.unalignedNodeMB();
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
s.statUnalignedNodesMB.numChildren++;
const double Ai = max(0.0f,halfArea(n->extend0(i)));
s = s + statistics(n->child(i),Ai,t0t1);
}
s.statUnalignedNodesMB.numNodes++;
s.statUnalignedNodesMB.nodeSAH += dt*A;
s.depth++;
}
else if (node.isTransformNode())
{
s.statTransformNodes.numNodes++;
s.statTransformNodes.nodeSAH += dt*A;
s.depth++;
}
else if (node.isQuantizedNode())
{
QuantizedNode* n = node.quantizedNode();
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
s.statQuantizedNodes.numChildren++;
const double Ai = max(0.0f,halfArea(n->extend(i)));
s = s + statistics(n->child(i),Ai,t0t1);
}
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++) {
s.statLeaf.numPrims += bvh->primTy.size(tri+i*bvh->primTy.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;
}
void BVHNStatistics<N>::statistics(NodeRef node, const float A, size_t& depth)
{
if (node.isNode())
{
numAlignedNodes++;
AlignedNode* n = node.node();
bvhSAH += A*travCostAligned;
depth = 0;
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
childrenAlignedNodes++;
const float Ai = max(0.0f,halfArea(n->extend(i)));
size_t cdepth; statistics(n->child(i),Ai,cdepth);
depth=max(depth,cdepth);
}
depth++;
}
else if (node.isUnalignedNode())
{
numUnalignedNodes++;
UnalignedNode* n = node.unalignedNode();
bvhSAH += A*travCostUnaligned;
depth = 0;
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
childrenUnalignedNodes++;
const float Ai = max(0.0f,halfArea(n->extend(i)));
size_t cdepth; statistics(n->child(i),Ai,cdepth);
depth=max(depth,cdepth);
}
depth++;
}
else if (node.isNodeMB())
{
numAlignedNodesMB++;
AlignedNodeMB* n = node.nodeMB();
bvhSAH += A*travCostAligned;
depth = 0;
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
childrenAlignedNodesMB++;
const float Ai = max(0.0f,halfArea(n->extend0(i)));
size_t cdepth; statistics(n->child(i),Ai,cdepth);
depth=max(depth,cdepth);
}
depth++;
}
else if (node.isUnalignedNodeMB())
{
numUnalignedNodesMB++;
UnalignedNodeMB* n = node.unalignedNodeMB();
bvhSAH += A*travCostUnaligned;
depth = 0;
for (size_t i=0; i<N; i++) {
if (n->child(i) == BVH::emptyNode) continue;
childrenUnalignedNodesMB++;
const float Ai = max(0.0f,halfArea(n->extend0(i)));
size_t cdepth; statistics(n->child(i),Ai,cdepth);
depth=max(depth,cdepth);
}
depth++;
}
else if (node.isTransformNode())
{
numTransformNodes++;
TransformNode* n = node.transformNode();
bvhSAH += A*travCostTransform;
depth = 0;
const BBox3fa worldBounds = xfmBounds(n->local2world,n->localBounds);
const float Ai = max(0.0f,halfArea(worldBounds));
//size_t cdepth; statistics(n->child,Ai,cdepth);
//depth=max(depth,cdepth)+1;
}
else
{
depth = 0;
size_t num; const char* tri = node.leaf(num);
if (!num) return;
numLeaves++;
numPrimBlocks += num;
for (size_t i=0; i<num; i++)
numPrims += bvh->primTy.size(tri+i*bvh->primTy.bytes);
float sah = A * intCost * num;
leafSAH += sah;
}
}
