29#ifndef NANOVDB_OPENTONANOVDB_H_HAS_BEEN_INCLUDED
30#define NANOVDB_OPENTONANOVDB_H_HAS_BEEN_INCLUDED
42template<
typename BufferT = HostBuffer>
87 static_assert(
sizeof(
Type) ==
sizeof(openvdb::math::BBox<T>),
"Mismatching sizeof");
95 static_assert(
sizeof(
Type) ==
sizeof(openvdb::math::Vec3<T>),
"Mismatching sizeof");
103 static_assert(
sizeof(
Type) ==
sizeof(openvdb::math::Vec4<T>),
"Mismatching sizeof");
116template <
typename BuildT>
121 using RootT =
typename TreeT::RootNodeType;
122 using UpperT =
typename RootT::ChildNodeType;
123 using LowerT =
typename UpperT::ChildNodeType;
124 using LeafT =
typename LowerT::ChildNodeType;
125 using ValueT =
typename LeafT::ValueType;
132 using GridT = openvdb::tools::PointIndexGrid;
134 using RootT =
typename TreeT::RootNodeType;
135 using UpperT =
typename RootT::ChildNodeType;
136 using LowerT =
typename UpperT::ChildNodeType;
137 using LeafT =
typename LowerT::ChildNodeType;
138 using ValueT =
typename LeafT::ValueType;
145 using GridT = openvdb::points::PointDataGrid;
147 using RootT =
typename TreeT::RootNodeType;
148 using UpperT =
typename RootT::ChildNodeType;
149 using LowerT =
typename UpperT::ChildNodeType;
150 using LeafT =
typename LowerT::ChildNodeType;
151 using ValueT =
typename LeafT::ValueType;
169template<
typename OpenBuildT,
176 template <
typename NodeT>
struct NodePair;
177 struct Codec {
float min, max; uint16_t log2, size;};
195 static_assert(
sizeof(NanoValueT) ==
sizeof(OpenValueT),
"Mismatching sizeof");
200 uint64_t mBufferOffsets[9];
202 std::set<BlindMetaData> mBlindMetaData;
203 std::vector<NodePair<OpenLeafT >> mArray0;
204 std::vector<NodePair<OpenLowerT>> mArray1;
205 std::vector<NodePair<OpenUpperT>> mArray2;
206 std::unique_ptr<Codec[]> mCodec;
231 const BufferT& allocator = BufferT());
237 const BufferT& allocator = BufferT());
244 template <
typename T>
245 inline typename std::enable_if<!std::is_same<T, FpN>::value>::type
246 compression(
const OpenGridT&, uint64_t&) {}
248 template <
typename T>
249 inline typename std::enable_if<std::is_same<T, FpN>::value>::type
250 compression(
const OpenGridT& openGrid, uint64_t &offset);
253 NanoGridT* processGrid(
const OpenGridT& openGrid);
256 NanoTreeT* processTree(
const OpenTreeT& openTree);
259 NanoRootT* processRoot(
const OpenRootT& openRoot);
261 template <
typename T>
262 void processNodes(std::vector<NodePair<T>> &nodes);
267 typename std::enable_if<!std::is_same<typename OpenGridType<openvdb::ValueMask>::LeafT,
typename T::OpenNodeT>
::value &&
268 !std::is_same<typename OpenGridType<bool>::LeafT,
typename T::OpenNodeT>
::value &&
269 !std::is_same<Fp4, typename T::NanoNodeT::BuildType>::value &&
270 !std::is_same<Fp8, typename T::NanoNodeT::BuildType>::value &&
271 !std::is_same<Fp16,typename T::NanoNodeT::BuildType>::value &&
272 !std::is_same<FpN, typename T::NanoNodeT::BuildType>::value>::type
273 processLeafs(std::vector<T> &leafs);
276 typename std::enable_if<std::is_same<Fp4, typename T::NanoNodeT::BuildType>::value ||
277 std::is_same<Fp8, typename T::NanoNodeT::BuildType>::value ||
278 std::is_same<Fp16, typename T::NanoNodeT::BuildType>::value>::type
279 processLeafs(std::vector<T> &leafs);
282 typename std::enable_if<std::is_same<FpN, typename T::NanoNodeT::BuildType>::value>::type
283 processLeafs(std::vector<T> &leafs);
286 typename std::enable_if<std::is_same<T, typename OpenGridType<openvdb::ValueMask>::LeafT>
::value>::type
287 processLeafs(std::vector<NodePair<T>> &leafs);
290 typename std::enable_if<std::is_same<T, typename OpenGridType<bool>::LeafT>
::value>::type
291 processLeafs(std::vector<NodePair<T>> &leafs);
296 template <
typename T>
297 typename std::enable_if<!std::is_same<T, openvdb::tools::PointIndexGrid>::value &&
298 !std::is_same<T, openvdb::points::PointDataGrid>::value>::type
299 preProcessMetadata(
const T& openGrid);
301 template <
typename T>
302 typename std::enable_if<std::is_same<T, openvdb::tools::PointIndexGrid>::value>::type
303 preProcessMetadata(
const T& openGrid);
305 template <
typename T>
306 typename std::enable_if<std::is_same<T, openvdb::points::PointDataGrid>::value>::type
307 preProcessMetadata(
const T& openGrid);
313 typename std::enable_if<!std::is_same<T, openvdb::tools::PointIndexGrid>::value &&
314 !std::is_same<T, openvdb::points::PointDataGrid>::value, GridBlindMetaData*>::type
315 processMetadata(
const T& openGrid);
318 typename std::enable_if<std::is_same<T, openvdb::tools::PointIndexGrid>::value, GridBlindMetaData*>::type
319 processMetadata(
const T& openGrid);
322 typename std::enable_if<std::is_same<T, openvdb::points::PointDataGrid>::value, GridBlindMetaData*>::type
323 processMetadata(
const T& openGrid);
327 uint64_t pointCount();
329 template<
typename AttT,
typename CodecT = openvdb::po
ints::UnknownCodec>
330 void copyPointAttribute(
size_t attIdx, AttT *attPtr);
334 template <
typename OpenNodeT,
typename NanoNodeT>
335 void encode(
const OpenNodeT *openNode, NanoNodeT *nanoNode);
340 template <
typename OpenNodeT>
341 typename NanoNode<NanoBuildT, OpenNodeT::LEVEL>::Type* decode(
const OpenNodeT *openNode);
347template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
359template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
366 const BufferT& allocator)
368 this->setStats(sMode);
369 this->setChecksum(cMode);
370 this->setVerbose(verbose);
371 return (*
this)(openGrid, allocator);
376template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
380 const BufferT& allocator)
382 std::unique_ptr<openvdb::util::CpuTimer> timer(mVerbose > 1 ?
new openvdb::util::CpuTimer() :
nullptr);
384 if (timer) timer->start(
"Allocating memory for the NanoVDB buffer");
385 auto handle = this->initHandle(openGrid, allocator);
386 if (timer) timer->stop();
388 if (timer) timer->start(
"Processing leaf nodes");
389 this->processLeafs(mArray0);
390 if (timer) timer->stop();
392 if (timer) timer->start(
"Processing lower internal nodes");
393 this->processNodes(mArray1);
394 if (timer) timer->stop();
396 if (timer) timer->start(
"Processing upper internal nodes");
397 this->processNodes(mArray2);
398 if (timer) timer->stop();
400 if (timer) timer->start(
"Processing grid, tree and root node");
401 NanoGridT *nanoGrid = this->processGrid(openGrid);
402 if (timer) timer->stop();
405 if (std::is_same<OpenBuildT, openvdb::PointIndex32>::value ||
406 std::is_same<OpenBuildT, openvdb::PointDataIndex32>::value) {
410 if (timer) timer->start(
"GridStats");
412 if (timer) timer->stop();
414 if (timer) timer->start(
"Checksum");
416 if (timer) timer->stop();
423template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
425inline typename std::enable_if<std::is_same<T, FpN>::value>::type
427 compression(
const OpenGridT& openGrid, uint64_t &offset)
433 mOracle.setTolerance(0.1f *
float(openGrid.voxelSize()[0]));
435 mOracle.setTolerance(0.01f);
437 mOracle.setTolerance(0.0f);
441 const size_t size = mArray0.size();
442 mCodec.reset(
new Codec[size]);
444 DitherLUT lut(mDitherOn);
445 auto kernel = [&](
const auto &r) {
446 const OracleT oracle = mOracle;
447 for (
auto i=r.begin(); i!=r.end(); ++i) {
448 const float *data = mArray0[i].node->buffer().data();
449 float min = std::numeric_limits<float>::max(),
max = -
min;
450 for (
int j=0; j<512; ++j) {
457 const float range =
max -
min;
458 uint16_t logBitWidth = 0;
459 while (range > 0.0f && logBitWidth < 4u) {
460 const uint32_t mask = (uint32_t(1) << (uint32_t(1) << logBitWidth)) - 1u;
461 const float encode = mask/range;
462 const float decode = range/mask;
465 const float exact = data[j];
466 const uint32_t code = uint32_t(encode*(exact - min) + lut(j));
467 const float approx = code * decode +
min;
468 j += oracle(exact, approx) ? 1 : 513;
473 mCodec[i].log2 = logBitWidth;
474 mCodec[i].size = NanoLeafT::DataType::memUsage(1u<<logBitWidth);
480 uint32_t counters[5+1] = {0};
481 ++counters[mCodec[0].log2];
482 for (
size_t i=1; i<size; ++i) {
483 ++counters[mCodec[i].log2];
484 mArray0[i].offset = mArray0[i-1].offset + mCodec[i-1].size;
486 std::cout <<
"\n" << mOracle << std::endl;
487 std::cout <<
"Dithering: " << (mDitherOn ?
"enabled" :
"disabled") << std::endl;
489 for (uint32_t i=0; i<=5; ++i) {
490 if (uint32_t n = counters[i]) {
491 avg += n * float(1 << i);
492 printf(
"%2i bits: %6u leaf nodes, i.e. %4.1f%%\n",1<<i, n, 100.0f*n/
float(size));
495 printf(
"%4.1f bits per value on average\n", avg/
float(size));
497 for (
size_t i=1; i<size; ++i) {
498 mArray0[i].offset = mArray0[i-1].offset + mCodec[i-1].size;
501 offset = mArray0[size-1].offset + mCodec[size-1].size;
506template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
507GridHandle<BufferT> OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
508 initHandle(
const OpenGridT& openGrid,
const BufferT& buffer)
510 auto &openTree = openGrid.tree();
511 auto &openRoot = openTree.root();
516 std::vector<uint32_t> nodeCount = openTree.nodeCount();
517 mArray0.reserve(nodeCount[0]);
518 mArray1.reserve(nodeCount[1]);
519 mArray2.reserve(nodeCount[2]);
521 uint64_t offset[3] = {0};
522 for (
auto it2 = openRoot.cbeginChildOn(); it2; ++it2) {
523 mArray2.emplace_back(&(*it2), offset[2]);
524 offset[2] += NanoUpperT::memUsage();
525 for (
auto it1 = it2->cbeginChildOn(); it1; ++it1) {
526 mArray1.emplace_back(&(*it1), offset[1]);
527 offset[1] += NanoLowerT::memUsage();
528 for (
auto it0 = it1->cbeginChildOn(); it0; ++it0) {
529 mArray0.emplace_back(&(*it0), offset[0]);
530 offset[0] +=
sizeof(NanoLeafT);
535 this->
template compression<NanoBuildT>(openGrid, offset[0]);
537 this->preProcessMetadata(openGrid);
539 mBufferOffsets[0] = 0;
540 mBufferOffsets[1] = NanoGridT::memUsage();
541 mBufferOffsets[2] = NanoTreeT::memUsage();
542 mBufferOffsets[3] = NanoRootT::memUsage(openTree.root().getTableSize());
543 mBufferOffsets[4] = offset[2];
544 mBufferOffsets[5] = offset[1];
545 mBufferOffsets[6] = offset[0];
547 mBufferOffsets[8] = 0;
548 for (
auto& i : mBlindMetaData) mBufferOffsets[8] += i.size;
551 for (
int i = 2; i < 9; ++i) {
552 mBufferOffsets[i] += mBufferOffsets[i - 1];
555 GridHandle<BufferT> handle(BufferT::create(mBufferOffsets[8], &buffer));
556 mBufferPtr = handle.data();
559 openvdb::util::printBytes(std::cout, mBufferOffsets[8],
"Allocated",
" for the NanoVDB grid\n");
566template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
567NanoGrid<NanoBuildT>* OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
568 processGrid(
const OpenGridT& openGrid)
570 auto *nanoGrid =
reinterpret_cast<NanoGridT*
>(mBufferPtr + mBufferOffsets[0]);
571 if (!openGrid.transform().baseMap()->isLinear()) {
574 auto affineMap = openGrid.transform().baseMap()->getAffineMap();
575 auto *data = nanoGrid->data();
577 data->mChecksum = 0u;
578 data->mVersion = Version();
580 data->mGridIndex = 0;
581 data->mGridCount = 1;
582 data->mGridSize = mBufferOffsets[8];
583 data->mWorldBBox = BBox<Vec3R>();
584 data->mBlindMetadataOffset = 0;
585 data->mBlindMetadataCount = 0;
587 const std::string gridName = openGrid.getName();
591 data->setLongGridNameOn();
593 mDelta = NanoValueT(0);
594 switch (openGrid.getGridClass()) {
599 mDelta = NanoValueT(openGrid.voxelSize()[0]);
612 if (std::is_same<NanoBuildT, float>::value) {
614 }
else if (std::is_same<NanoBuildT, double>::value) {
616 }
else if (std::is_same<NanoBuildT, int16_t>::value) {
618 }
else if (std::is_same<NanoBuildT, int32_t>::value) {
620 }
else if (std::is_same<NanoBuildT, int64_t>::value) {
622 }
else if (std::is_same<NanoBuildT, Vec3f>::value) {
624 }
else if (std::is_same<NanoBuildT, openvdb::Index32>::value) {
626 }
else if (std::is_same<NanoBuildT, openvdb::PointIndex32>::value) {
629 }
else if (std::is_same<NanoBuildT, openvdb::PointDataIndex32>::value) {
632 }
else if (std::is_same<NanoBuildT, ValueMask>::value) {
635 }
else if (std::is_same<NanoBuildT, bool>::value) {
637 }
else if (std::is_same<NanoBuildT, Fp4>::value) {
639 }
else if (std::is_same<NanoBuildT, Fp8>::value) {
641 }
else if (std::is_same<NanoBuildT, Fp16>::value) {
643 }
else if (std::is_same<NanoBuildT, FpN>::value) {
645 }
else if (std::is_same<NanoBuildT, Vec4f>::value) {
647 }
else if (std::is_same<NanoBuildT, Vec4d>::value) {
653 if (openGrid.hasUniformVoxels()) {
656 data->mVoxelSize = affineMap->voxelSize();
658 const auto mat = affineMap->getMat4();
660 data->mMap.set(mat, mat.inverse(), 1.0);
663 this->processTree(openGrid.tree());
665 if (
auto size = mBlindMetaData.size()) {
666 auto *metaData = this->processMetadata(openGrid);
667 data->mBlindMetadataOffset =
PtrDiff(metaData, nanoGrid);
668 data->mBlindMetadataCount =
static_cast<uint32_t
>(size);
669 auto *blindData =
reinterpret_cast<char*
>(mBufferPtr + mBufferOffsets[7]);
670 metaData->setBlindData(blindData);
677template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
678NanoTree<NanoBuildT>* OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
679 processTree(
const OpenTreeT& openTree)
681 auto *nanoTree =
reinterpret_cast<NanoTreeT*
>(mBufferPtr + mBufferOffsets[1]);
682 auto *data = nanoTree->data();
684 data->setRoot( this->processRoot( openTree.root()) );
686 NanoUpperT *nanoUpper = mArray2.empty() ? nullptr :
reinterpret_cast<NanoUpperT*
>(mBufferPtr + mBufferOffsets[3]);
687 data->setFirstNode(nanoUpper);
689 NanoLowerT *nanoLower = mArray1.empty() ? nullptr :
reinterpret_cast<NanoLowerT*
>(mBufferPtr + mBufferOffsets[4]);
690 data->setFirstNode(nanoLower);
692 NanoLeafT *nanoLeaf = mArray0.empty() ? nullptr :
reinterpret_cast<NanoLeafT*
>(mBufferPtr + mBufferOffsets[5]);
693 data->setFirstNode(nanoLeaf);
695 data->mNodeCount[0] =
static_cast<uint32_t
>(mArray0.size());
696 data->mNodeCount[1] =
static_cast<uint32_t
>(mArray1.size());
697 data->mNodeCount[2] =
static_cast<uint32_t
>(mArray2.size());
702 data->mTileCount[0] =
reduce(mArray1, uint32_t(0), [&](
auto &r, uint32_t sum){
703 for (
auto i=r.begin(); i!=r.end(); ++i) sum += mArray1[i].node->getValueMask().countOn();
704 return sum;}, std::plus<uint32_t>());
707 data->mTileCount[1] =
reduce(mArray2, uint32_t(0), [&](
auto &r, uint32_t sum){
708 for (
auto i=r.begin(); i!=r.end(); ++i) sum += mArray2[i].node->getValueMask().countOn();
709 return sum;}, std::plus<uint32_t>());
713 for (
auto it = openTree.root().cbeginValueOn(); it; ++it) ++sum;
714 data->mTileCount[2] = sum;
716 data->mVoxelCount =
reduce(mArray0, uint64_t(0), [&](
auto &r, uint64_t sum){
717 for (
auto i=r.begin(); i!=r.end(); ++i) sum += mArray0[i].node->valueMask().countOn();
718 return sum;}, std::plus<uint64_t>());
720 data->mVoxelCount += data->mTileCount[0]*NanoLeafT::NUM_VALUES;
721 data->mVoxelCount += data->mTileCount[1]*NanoLowerT::NUM_VALUES;
722 data->mVoxelCount += data->mTileCount[2]*NanoUpperT::NUM_VALUES;
726 data->mTileCount[0] = 0;
727 data->mTileCount[1] = 0;
728 data->mTileCount[2] = 0;
729 data->mVoxelCount = 0;
738template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
739NanoRoot<NanoBuildT>* OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
740 processRoot(
const OpenRootT& openRoot)
742 auto *nanoRoot =
reinterpret_cast<NanoRootT*
>(mBufferPtr + mBufferOffsets[2]);
743 auto* data = nanoRoot->data();
744 data->mBackground = openRoot.background();
745 data->mTableSize = 0;
746 data->mMinimum = data->mMaximum = data->mBackground;
750 OpenValueT
value = openvdb::zeroVal<OpenValueT>();
751 for (
auto iter = openRoot.cbeginChildAll(); iter; ++iter) {
752 auto* tile = data->tile(data->mTableSize++);
753 if (
const OpenUpperT *openChild = iter.probeChild(
value )) {
754 tile->setChild(iter.getCoord(), this->decode(openChild), data);
756 tile->setValue(iter.getCoord(), iter.isValueOn(),
value);
764template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
765template<
typename OpenNodeT>
767 processNodes(std::vector<NodePair<OpenNodeT>>& openNodes)
770 static_assert(NanoNodeT::LEVEL == 1 || NanoNodeT::LEVEL == 2,
"Expected internal node");
771 auto kernel = [&](
const Range1D& r) {
772 uint8_t* ptr = mBufferPtr + mBufferOffsets[5 - NanoNodeT::LEVEL];
773 OpenValueT
value = openvdb::zeroVal<OpenValueT>();
774 for (
auto i = r.begin(); i != r.end(); ++i) {
775 auto *openNode = openNodes[i].node;
776 auto *nanoNode = PtrAdd<NanoNodeT>(ptr, openNodes[i].offset);
777 auto* data = nanoNode->data();
778 this->encode(openNode, nanoNode);
779 data->mValueMask = openNode->getValueMask();
780 data->mChildMask = openNode->getChildMask();
781 for (
auto iter = openNode->cbeginChildAll(); iter; ++iter) {
782 if (
const auto *openChild = iter.probeChild(
value)) {
783 data->setChild(iter.pos(), this->decode(openChild));
785 data->setValue(iter.pos(),
value);
795template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
797inline typename std::enable_if<!std::is_same<typename OpenGridType<openvdb::ValueMask>::LeafT,
typename T::OpenNodeT>
::value &&
798 !std::is_same<typename OpenGridType<bool>::LeafT,
typename T::OpenNodeT>
::value &&
799 !std::is_same<Fp4, typename T::NanoNodeT::BuildType>::value &&
800 !std::is_same<Fp8, typename T::NanoNodeT::BuildType>::value &&
801 !std::is_same<Fp16,typename T::NanoNodeT::BuildType>::value &&
802 !std::is_same<FpN, typename T::NanoNodeT::BuildType>::value>::type
805 auto kernel = [&](
const auto& r) {
806 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
807 for (
auto i = r.begin(); i != r.end(); ++i) {
808 auto *openLeaf = openLeafs[i].node;
809 auto *nanoLeaf = PtrAdd<NanoLeafT>(ptr, openLeafs[i].offset);
810 auto* data = nanoLeaf->data();
811 this->encode(openLeaf, nanoLeaf);
813 data->mValueMask = openLeaf->valueMask();
814 auto *src =
reinterpret_cast<const NanoValueT*
>(openLeaf->buffer().data());
815 for (NanoValueT *dst = data->mValues, *end = dst + OpenLeafT::size(); dst != end; dst += 4, src += 4) {
828template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
830inline typename std::enable_if<std::is_same<Fp4, typename T::NanoNodeT::BuildType>::value ||
831 std::is_same<Fp8, typename T::NanoNodeT::BuildType>::value ||
832 std::is_same<Fp16, typename T::NanoNodeT::BuildType>::value>::type
833OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::processLeafs(std::vector<T>& openLeafs)
835 using ArrayT =
typename NanoLeafT::DataType::ArrayType;
836 using FloatT =
typename std::conditional<NanoLeafT::DataType::bitWidth()>=16, double,
float>::type;
837 DitherLUT lut(mDitherOn);
839 auto kernel = [&](
const auto& r) {
840 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
841 for (
auto i = r.begin(); i != r.end(); ++i) {
842 auto *openLeaf = openLeafs[i].node;
843 auto *nanoLeaf = PtrAdd<NanoLeafT>(ptr, openLeafs[i].offset);
844 auto* data = nanoLeaf->data();
845 this->encode(openLeaf, nanoLeaf);
847 data->mValueMask = openLeaf->valueMask();
848 auto *src =
reinterpret_cast<const float*
>(openLeaf->buffer().data());
850 float min = std::numeric_limits<float>::max(),
max = -
min;
851 for (
int i=0; i<512; ++i) {
852 const float v = src[i];
853 if (v < min)
min = v;
854 if (v > max)
max = v;
856 data->init(min, max, NanoLeafT::DataType::bitWidth());
858 const FloatT encode = FloatT((1 << NanoLeafT::DataType::bitWidth()) - 1)/(
max-
min);
859 auto *code =
reinterpret_cast<ArrayT*
>(data->mCode);
861 if (std::is_same<Fp4, NanoBuildT>::value) {
862 for (
int i=0; i<128; ++i) {
863 auto tmp = ArrayT(encode * (*src++ - min) + lut(offset++));
864 *code++ = ArrayT(encode * (*src++ - min) + lut(offset++)) << 4 | tmp;
865 tmp = ArrayT(encode * (*src++ - min) + lut(offset++));
866 *code++ = ArrayT(encode * (*src++ - min) + lut(offset++)) << 4 | tmp;
869 for (
int i=0; i<128; ++i) {
870 *code++ = ArrayT(encode * (*src++ - min) + lut(offset++));
871 *code++ = ArrayT(encode * (*src++ - min) + lut(offset++));
872 *code++ = ArrayT(encode * (*src++ - min) + lut(offset++));
873 *code++ = ArrayT(encode * (*src++ - min) + lut(offset++));
883template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
885inline typename std::enable_if<std::is_same<FpN, typename T::NanoNodeT::BuildType>::value>::type
886OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::processLeafs(std::vector<T>& openLeafs)
890 DitherLUT lut(mDitherOn);
891 auto kernel = [&](
const auto& r) {
892 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
893 for (
auto i = r.begin(); i != r.end(); ++i) {
894 auto *openLeaf = openLeafs[i].node;
895 auto *nanoLeaf = PtrAdd<NanoLeafT>(ptr, openLeafs[i].offset);
896 auto* data = nanoLeaf->data();
897 this->encode(openLeaf, nanoLeaf);
898 const uint8_t logBitWidth = uint8_t(mCodec[i].log2);
899 data->mFlags = logBitWidth << 5;
900 data->mValueMask = openLeaf->valueMask();
901 auto *src =
reinterpret_cast<const float*
>(openLeaf->buffer().data());
902 const float min = mCodec[i].min,
max = mCodec[i].max;
903 data->init(min, max, uint8_t(1) << logBitWidth);
906 switch (logBitWidth) {
908 auto *dst =
reinterpret_cast<uint8_t*
>(data+1);
909 const float encode = 1.0f/(
max -
min);
910 for (
int j=0; j<64; ++j) {
912 for (
int k=0; k<8; ++k) {
913 a |= uint8_t(encode * (*src++ - min) + lut(offset++)) << k;
920 auto *dst =
reinterpret_cast<uint8_t*
>(data+1);
921 const float encode = 3.0f/(
max -
min);
922 for (
int j=0; j<128; ++j) {
923 auto a = uint8_t(encode * (*src++ - min) + lut(offset++));
924 a |= uint8_t(encode * (*src++ - min) + lut(offset++)) << 2;
925 a |= uint8_t(encode * (*src++ - min) + lut(offset++)) << 4;
926 *dst++ = uint8_t(encode * (*src++ - min) + lut(offset++)) << 6 | a;
931 auto *dst =
reinterpret_cast<uint8_t*
>(data+1);
932 const float encode = 15.0f/(
max -
min);
933 for (
int j=0; j<128; ++j) {
934 auto a = uint8_t(encode * (*src++ - min) + lut(offset++));
935 *dst++ = uint8_t(encode * (*src++ - min) + lut(offset++)) << 4 | a;
936 a = uint8_t(encode * (*src++ - min) + lut(offset++));
937 *dst++ = uint8_t(encode * (*src++ - min) + lut(offset++)) << 4 | a;
942 auto *dst =
reinterpret_cast<uint8_t*
>(data+1);
943 const float encode = 255.0f/(
max -
min);
944 for (
int j=0; j<128; ++j) {
945 *dst++ = uint8_t(encode * (*src++ - min) + lut(offset++));
946 *dst++ = uint8_t(encode * (*src++ - min) + lut(offset++));
947 *dst++ = uint8_t(encode * (*src++ - min) + lut(offset++));
948 *dst++ = uint8_t(encode * (*src++ - min) + lut(offset++));
953 auto *dst =
reinterpret_cast<uint16_t*
>(data+1);
954 const double encode = 65535.0/(
max -
min);
955 for (
int j=0; j<128; ++j) {
956 *dst++ = uint16_t(encode * (*src++ - min) + lut(offset++));
957 *dst++ = uint16_t(encode * (*src++ - min) + lut(offset++));
958 *dst++ = uint16_t(encode * (*src++ - min) + lut(offset++));
959 *dst++ = uint16_t(encode * (*src++ - min) + lut(offset++));
970template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
972inline typename std::enable_if<std::is_same<T, typename OpenGridType<bool>::LeafT>
::value>::type
973OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::processLeafs(std::vector<NodePair<T>>& openLeafs)
975 auto kernel = [&](
const auto& r) {
976 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
977 for (
auto i = r.begin(); i != r.end(); ++i) {
978 auto *openLeaf = openLeafs[i].node;
979 auto *nanoLeaf = PtrAdd<NanoLeafT>(ptr, openLeafs[i].offset);
980 auto* data = nanoLeaf->data();
981 this->encode(openLeaf, nanoLeaf);
983 data->mValueMask = openLeaf->valueMask();
984 data->mValues = *
reinterpret_cast<const nanovdb::Mask<3>*
>(openLeaf->buffer().data());
992template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
994inline typename std::enable_if<std::is_same<T, typename OpenGridType<openvdb::ValueMask>::LeafT>
::value>::type
995OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::processLeafs(std::vector<NodePair<T>>& openLeafs)
997 auto kernel = [&](
const auto& r) {
998 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
999 for (
auto i = r.begin(); i != r.end(); ++i) {
1000 auto *openLeaf = openLeafs[i].node;
1001 auto *nanoLeaf = PtrAdd<NanoLeafT>(ptr, openLeafs[i].offset);
1002 auto* data = nanoLeaf->data();
1003 this->encode(openLeaf, nanoLeaf);
1005 data->mValueMask = openLeaf->valueMask();
1008 forEach(openLeafs, 8, kernel);
1013template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1014uint64_t OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::pointCount()
1016 return reduce(mArray0, uint64_t(0), [&](
auto &r, uint64_t sum) {
1017 for (
auto i=r.begin(); i!=r.end(); ++i) sum += mArray0[i].node->getLastValue();
1018 return sum;}, std::plus<uint64_t>());
1025template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1026template <
typename OpenNodeT,
typename NanoNodeT>
1027inline void OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
1028encode(
const OpenNodeT *openNode, NanoNodeT *nanoNode)
1030 static_assert(is_same<NanoNodeT, typename NanoNode<NanoBuildT, OpenNodeT::LEVEL>::Type>
::value,
"Type mismatch");
1032 nanoNode->
data()->setOrigin(ijk);
1033 reinterpret_cast<int64_t&
>(ijk) =
PtrDiff(nanoNode, mBufferPtr);
1041template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1042template <
typename OpenNodeT>
1043inline typename NanoNode<NanoBuildT, OpenNodeT::LEVEL>::Type* OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
1044decode(
const OpenNodeT *openNode)
1046 using NanoNodeT =
typename NanoNode<NanoBuildT, OpenNodeT::LEVEL>::Type;
1048 NanoNodeT *nanoNode = PtrAdd<NanoNodeT>(mBufferPtr,
reinterpret_cast<int64_t&
>(ijk));
1049 Coord tmp = nanoNode->origin();
1058template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1059template <
typename NodeT>
1060struct OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::NodePair {
1061 using OpenNodeT = NodeT;
1062 using NanoNodeT =
typename NanoNode<NanoBuildT, OpenNodeT::LEVEL>::Type;
1063 NodePair(
const NodeT *ptr,
size_t n) : node(ptr), offset(n) {}
1070template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1073 BlindMetaData(
const std::string& n,
const std::string& t,
size_t i,
size_t c,
size_t s)
1088template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1089template <
typename T>
1090inline typename std::enable_if<!std::is_same<T, openvdb::tools::PointIndexGrid>::value &&
1091 !std::is_same<T, openvdb::points::PointDataGrid>::value>::type
1094 mBlindMetaData.clear();
1095 const size_t length = openGrid.getName().length();
1097 mBlindMetaData.emplace(
"grid name",
"uint8_t", 0, 1, length + 1);
1103template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1104template <
typename T>
1105inline typename std::enable_if<std::is_same<T, openvdb::tools::PointIndexGrid>::value>::type
1106OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::preProcessMetadata(
const T& openGrid)
1108 mBlindMetaData.clear();
1109 if (
const uint64_t pointCount = this->
pointCount()) {
1110 mBlindMetaData.emplace(
"index",
"uint32_t", 0, pointCount,
sizeof(uint32_t));
1112 const size_t length = openGrid.getName().length();
1114 mBlindMetaData.emplace(
"grid name",
"uint8_t", mBlindMetaData.size(), 1, length + 1);
1120template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1121template <
typename T>
1122inline typename std::enable_if<std::is_same<T, openvdb::points::PointDataGrid>::value>::type
1123OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::preProcessMetadata(
const T& openGrid)
1125 mBlindMetaData.clear();
1127 if (
const uint64_t pointCount = this->
pointCount()) {
1128 auto *openLeaf = openGrid.tree().cbeginLeaf().getLeaf();
1129 const auto& attributeSet = openLeaf->attributeSet();
1130 const auto& descriptor = attributeSet.descriptor();
1131 const auto& nameMap = descriptor.map();
1132 for (
auto it = nameMap.begin(); it != nameMap.end(); ++it) {
1133 const size_t index = it->second;
1134 auto& attArray = openLeaf->constAttributeArray(index);
1135 mBlindMetaData.emplace(it->first, descriptor.valueType(index), index, pointCount, attArray.valueTypeSize());
1137 counter += nameMap.size();
1139 const size_t length = openGrid.getName().length();
1141 mBlindMetaData.emplace(
"grid name",
"uint8_t", counter, 1, length + 1);
1147template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1149inline typename std::enable_if<!std::is_same<T, openvdb::tools::PointIndexGrid>::value &&
1150 !std::is_same<T, openvdb::points::PointDataGrid>::value,GridBlindMetaData*>::type
1151OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
1152 processMetadata(
const T& openGrid)
1154 if (mBlindMetaData.empty()) {
1157 assert(mBlindMetaData.size() == 1);
1158 auto it = mBlindMetaData.cbegin();
1159 assert(it->name ==
"grid name" && it->typeName ==
"uint8_t" && it->index == 0);
1161 auto *metaData =
reinterpret_cast<GridBlindMetaData*
>(mBufferPtr + mBufferOffsets[6]);
1162 auto *blindData =
reinterpret_cast<char*
>(mBufferPtr + mBufferOffsets[7]);
1164 metaData->setBlindData(blindData);
1165 metaData->mElementCount = it->count;
1166 metaData->mFlags = 0;
1171 strcpy(blindData, openGrid.getName().c_str());
1177template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1179inline typename std::enable_if<std::is_same<T, openvdb::tools::PointIndexGrid>::value,GridBlindMetaData*>::type
1180OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::processMetadata(
const T& openGrid)
1182 if (mBlindMetaData.empty()) {
1185 assert(mBlindMetaData.size() == 1 || mBlindMetaData.size() == 2);
1186 auto *metaData =
reinterpret_cast<GridBlindMetaData*
>(mBufferPtr + mBufferOffsets[6]);
1187 auto *blindData =
reinterpret_cast<char*
>(mBufferPtr + mBufferOffsets[7]);
1189 auto it = mBlindMetaData.cbegin();
1190 const uint32_t leafCount =
static_cast<uint32_t
>(mArray0.size());
1192 using LeafDataT =
typename NanoLeafT::DataType;
1193 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
1195 auto *data0 =
reinterpret_cast<LeafDataT*
>(ptr + mArray0[0].offset);
1196 data0->mMinimum = 0;
1197 data0->mMaximum = data0->mValues[NanoLeafT::SIZE - 1u];
1198 for (uint32_t i = 1; i < leafCount; ++i) {
1199 auto *data1 =
reinterpret_cast<LeafDataT*
>(ptr + mArray0[i].offset);
1200 data1->mMinimum = data0->mMinimum + data0->mMaximum;
1201 data1->mMaximum = data1->mValues[NanoLeafT::SIZE - 1u];
1206 assert(it->count == data0->mMinimum + data0->mMaximum);
1207 assert(it->name ==
"index" && it->typeName ==
"uint32_t" && it->index == 0);
1208 metaData[0].setBlindData( blindData );
1209 metaData[0].mElementCount = it->count;
1210 metaData[0].mFlags = 0;
1215 std::stringstream ss;
1219 memcpy(metaData[0].mName, it->name.c_str(), it->name.size() + 1);
1222 forEach(mArray0, 16, [&](
const auto& r) {
1223 for (
auto i = r.begin(); i != r.end(); ++i) {
1224 auto *data = reinterpret_cast<LeafDataT*>(ptr + mArray0[i].offset);
1225 uint32_t* p = reinterpret_cast<uint32_t*>(blindData) + data->mMinimum;
1226 for (uint32_t idx : mArray0[i].node->indices()) *p++ = idx;
1229 blindData += it->size;
1233 if (it != mBlindMetaData.end()) {
1234 assert(it->name ==
"grid name" && it->typeName ==
"uint8_t" && it->index == 1);
1236 metaData[1].setBlindData( blindData );
1237 metaData[1].mElementCount = it->count;
1238 metaData[1].mFlags = 0;
1242 strcpy(blindData, openGrid.getName().c_str());
1249template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1251inline typename std::enable_if<std::is_same<T, openvdb::points::PointDataGrid>::value,GridBlindMetaData*>::type
1252OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::processMetadata(
const T& openGrid)
1254 if (mBlindMetaData.empty()) {
1258 auto *metaData =
reinterpret_cast<GridBlindMetaData*
>(mBufferPtr + mBufferOffsets[6]);
1259 auto *blindData =
reinterpret_cast<char*
>(mBufferPtr + mBufferOffsets[7]);
1261 const uint32_t leafCount =
static_cast<uint32_t
>(mArray0.size());
1263 using LeafDataT =
typename NanoLeafT::DataType;
1264 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
1266 auto *data0 =
reinterpret_cast<LeafDataT*
>(ptr + mArray0[0].offset);
1267 data0->mMinimum = 0;
1268 data0->mMaximum = data0->mValues[NanoLeafT::SIZE - 1u];
1269 for (uint32_t i = 1; i < leafCount; ++i) {
1270 auto *data1 =
reinterpret_cast<LeafDataT*
>(ptr + mArray0[i].offset);
1271 data1->mMinimum = data0->mMinimum + data0->mMaximum;
1272 data1->mMaximum = data1->mValues[NanoLeafT::SIZE - 1u];
1277 for (
auto it = mBlindMetaData.cbegin(); it != mBlindMetaData.end(); ++it, ++i) {
1278 metaData[i].setBlindData( blindData );
1279 metaData[i].mElementCount = it->count;
1280 metaData[i].mFlags = 0;
1281 if (it->name ==
"grid name") {
1286 strcpy((
char*)blindData, openGrid.getName().c_str());
1288 assert(it->count == data0->mMinimum + data0->mMaximum);
1291 std::stringstream ss;
1296 memcpy(metaData[i].mName, it->name.c_str(), it->name.size() + 1);
1297 if (it->typeName ==
"vec3s") {
1300 if (it->name ==
"P") {
1302 }
else if (it->name ==
"V") {
1304 }
else if (it->name ==
"Cd") {
1306 }
else if (it->name ==
"N") {
1311 }
else if (it->typeName ==
"int32") {
1313 this->copyPointAttribute(it->index, (int32_t*)blindData);
1314 if (it->name ==
"id") {
1319 }
else if (it->typeName ==
"int64") {
1321 this->copyPointAttribute(it->index, (int64_t*)blindData);
1322 if (it->name ==
"id") {
1327 }
else if (it->typeName ==
"float") {
1330 this->copyPointAttribute(it->index, (
float*)blindData);
1332 std::stringstream ss;
1333 ss <<
"Unsupported point attribute type: \"" << it->typeName <<
"\"";
1337 blindData += it->size;
1345template<
typename OpenBuildT,
typename NanoBuildT,
typename OracleT,
typename BufferT>
1346template<
typename AttT,
typename CodecT>
1347inline void OpenToNanoVDB<OpenBuildT, NanoBuildT, OracleT, BufferT>::
1348 copyPointAttribute(
size_t attIdx, AttT *attPtr)
1350 static_assert(std::is_same<typename OpenLeafT::ValueType, openvdb::PointDataIndex32>::value,
"Expected value to openvdb::PointData");
1351 using LeafDataT =
typename NanoLeafT::DataType;
1352 using HandleT = openvdb::points::AttributeHandle<AttT, CodecT>;
1353 forEach(mArray0, 16, [&](
const auto& r) {
1354 uint8_t* ptr = mBufferPtr + mBufferOffsets[5];
1355 for (
auto i = r.begin(); i != r.end(); ++i) {
1356 auto* openLeaf = mArray0[i].node;
1357 auto *nanoData = reinterpret_cast<LeafDataT*>(ptr + mArray0[i].offset);
1358 HandleT handle(openLeaf->constAttributeArray(attIdx));
1359 AttT* p = attPtr + nanoData->mMinimum;
1360 for (auto iter = openLeaf->beginIndexOn(); iter; ++iter) {
1361 *p++ = handle.get(*iter);
1369template<
typename BufferT,
typename OpenTreeT,
typename NanoBuildT>
1376 using OpenBuildT =
typename OpenTreeT::BuildType;
1378 return s(grid, sMode, cMode, verbose);
1383template<
typename BufferT>
1391 using openvdb_Vec4fTree =
typename openvdb::tree::Tree4<openvdb::Vec4f, 5, 4, 3>::Type;
1392 using openvdb_Vec4dTree =
typename openvdb::tree::Tree4<openvdb::Vec4d, 5, 4, 3>::Type;
1396 if (
auto grid = openvdb::GridBase::grid<openvdb::FloatGrid>(base)) {
1397 return openToNanoVDB<BufferT, openvdb::FloatTree>(*grid, sMode, cMode, verbose);
1398 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::DoubleGrid>(base)) {
1399 return openToNanoVDB<BufferT, openvdb::DoubleTree>(*grid, sMode, cMode, verbose);
1400 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::Int32Grid>(base)) {
1401 return openToNanoVDB<BufferT, openvdb::Int32Tree>(*grid, sMode, cMode, verbose);
1402 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::Int64Grid>(base)) {
1403 return openToNanoVDB<BufferT, openvdb::Int64Tree>(*grid, sMode, cMode, verbose);
1405 return openToNanoVDB<BufferT, openvdb::UInt32Tree>(*grid, sMode, cMode, verbose);
1406 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::Vec3fGrid>(base)) {
1407 return openToNanoVDB<BufferT, openvdb::Vec3fTree>(*grid, sMode, cMode, verbose);
1408 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::Vec3dGrid>(base)) {
1409 return openToNanoVDB<BufferT, openvdb::Vec3dTree>(*grid, sMode, cMode, verbose);
1410 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::tools::PointIndexGrid>(base)) {
1411 return openToNanoVDB<BufferT, openvdb::tools::PointIndexTree>(*grid, sMode, cMode, verbose);
1412 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::points::PointDataGrid>(base)) {
1413 return openToNanoVDB<BufferT, openvdb::points::PointDataTree>(*grid, sMode, cMode, verbose);
1414 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::MaskGrid>(base)) {
1415 return openToNanoVDB<BufferT, openvdb::MaskTree>(*grid, sMode, cMode, verbose);
1416 }
else if (
auto grid = openvdb::GridBase::grid<openvdb::BoolGrid>(base)) {
1417 return openToNanoVDB<BufferT, openvdb::BoolTree>(*grid, sMode, cMode, verbose);
1418 }
else if (
auto grid = openvdb::GridBase::grid<openvdb_Vec4fGrid>(base)) {
1419 return openToNanoVDB<BufferT, openvdb_Vec4fTree>(*grid, sMode, cMode, verbose);
1420 }
else if (
auto grid = openvdb::GridBase::grid<openvdb_Vec4dGrid>(base)) {
1421 return openToNanoVDB<BufferT, openvdb_Vec4dTree>(*grid, sMode, cMode, verbose);
Defines look up table to do dithering of 8^3 leaf nodes.
A unified wrapper for tbb::parallel_for and a naive std::thread fallback.
Generates a NanoVDB grid from any volume or function.
ValueT value
Definition: GridBuilder.h:1287
Computes a pair of 32bit checksums, og a Grid, by means of Cyclic Redundancy Check (CRC)
Defines two classes, a GridRegister the defines the value type (e.g. Double, Float etc) of a NanoVDB ...
Re-computes min/max/avg/var/bbox information for each node in a pre-existing NanoVDB grid.
A unified wrapper for tbb::parallel_invoke and a naive std::thread analog.
#define NANOVDB_DATA_ALIGNMENT
Definition: NanoVDB.h:116
#define NANOVDB_MAGIC_NUMBER
Definition: NanoVDB.h:102
Attribute-owned data structure for points. Point attributes are stored in leaf nodes and ordered by v...
A unified wrapper for tbb::parallel_reduce and a naive std::future analog.
Compression oracle based on absolute difference.
Definition: GridBuilder.h:39
Signed (i, j, k) 32-bit integer coordinate class, similar to openvdb::math::Coord.
Definition: NanoVDB.h:860
This class serves to manage a raw memory buffer of a NanoVDB Grid.
Definition: GridHandle.h:71
Highest level of the data structure. Contains a tree and a world->index transform (that currently onl...
Definition: NanoVDB.h:2309
This is a buffer that contains a shared or private pool to either externally or internally managed ho...
Definition: HostBuffer.h:110
Internal nodes of a VDB treedim(),.
Definition: NanoVDB.h:3122
Leaf nodes of the VDB tree. (defaults to 8x8x8 = 512 voxels)
Definition: NanoVDB.h:3685
Bit-mask to encode active states and facilitate sequential iterators and a fast codec for I/O compres...
Definition: NanoVDB.h:1796
This class will convert an OpenVDB grid into a NanoVDB grid managed by a GridHandle.
Definition: OpenToNanoVDB.h:174
void setStats(StatsMode mode=StatsMode::Default)
Definition: OpenToNanoVDB.h:225
void setChecksum(ChecksumMode mode=ChecksumMode::Default)
Definition: OpenToNanoVDB.h:227
void enableDithering(bool on=true)
Definition: OpenToNanoVDB.h:223
OracleT & oracle()
return a reference to the compression oracle
Definition: OpenToNanoVDB.h:219
void setVerbose(int mode=1)
Definition: OpenToNanoVDB.h:221
GridHandle< BufferT > operator()(const OpenGridT &grid, const BufferT &allocator=BufferT())
Return a shared pointer to a NanoVDB grid handle constructed from the specified OpenVDB grid.
Definition: OpenToNanoVDB.h:379
OpenToNanoVDB()
Default c-tor.
Definition: OpenToNanoVDB.h:348
Top-most node of the VDB tree structure.
Definition: NanoVDB.h:2800
VDB Tree, which is a thin wrapper around a RootNode.
Definition: NanoVDB.h:2544
Dummy type for a voxel with a binary mask value, e.g. the active state.
Definition: NanoVDB.h:189
A simple vector class with three double components, similar to openvdb::math::Vec3.
Definition: NanoVDB.h:1044
A simple vector class with three double components, similar to openvdb::math::Vec4.
Definition: NanoVDB.h:1189
Container class that associates a tree with a transform and metadata.
Definition: Grid.h:573
_TreeType TreeType
Definition: Grid.h:578
Definition: Exceptions.h:63
Definition: Exceptions.h:65
Axis-aligned bounding box of signed integer coordinates.
Definition: Coord.h:249
Signed (x, y, z) 32-bit integer coordinates.
Definition: Coord.h:25
static Coord min()
Return the smallest possible coordinate.
Definition: Coord.h:43
static Coord max()
Return the largest possible coordinate.
Definition: Coord.h:46
const Int32 * data() const
Definition: Coord.h:139
Definition: NanoVDB.h:184
uint64_t AlignUp(uint64_t byteCount)
round up byteSize to the nearest wordSize, e.g. to align to machine word: AlignUp<sizeof(size_t)(n)
Definition: NanoVDB.h:847
static int64_t PtrDiff(const T1 *p, const T2 *q)
Definition: NanoVDB.h:433
T reduce(RangeT range, const T &identity, const FuncT &func, const JoinT &join)
Definition: Reduce.h:42
Vec3< double > Vec3R
Definition: NanoVDB.h:1173
BBox< Coord > CoordBBox
Definition: NanoVDB.h:1658
StatsMode
Grid flags which indicate what extra information is present in the grid buffer.
Definition: GridStats.h:32
void updateChecksum(NanoGrid< ValueT > &grid, ChecksumMode mode=ChecksumMode::Default)
Updates the checksum of a grid.
Definition: GridChecksum.h:272
void gridStats(NanoGrid< BuildT > &grid, StatsMode mode=StatsMode::Default)
Re-computes the min/max, stats and bbox information for an existing NanoVDB Grid.
Definition: GridStats.h:713
ChecksumMode
List of different modes for computing for a checksum.
Definition: GridChecksum.h:33
GridHandle< BufferT > openToNanoVDB(const openvdb::GridBase::Ptr &base, StatsMode sMode=StatsMode::Default, ChecksumMode cMode=ChecksumMode::Default, int verbose=0)
Forward declaration of free-standing function that converts an OpenVDB GridBase into a NanoVDB GridHa...
Definition: OpenToNanoVDB.h:1385
void forEach(RangeT range, const FuncT &func)
simple wrapper for tbb::parallel_for with a naive std fallback
Definition: ForEach.h:40
Index64 pointCount(const PointDataTreeT &tree, const FilterT &filter=NullFilter(), const bool inCoreOnly=false, const bool threaded=true)
Count the total number of points in a PointDataTree.
Definition: PointCount.h:88
@ GRID_FOG_VOLUME
Definition: Types.h:417
@ GRID_STAGGERED
Definition: Types.h:418
@ GRID_LEVEL_SET
Definition: Types.h:416
tree::Tree4< float, 5, 4, 3 >::Type FloatTree
Definition: openvdb.h:55
Definition: Exceptions.h:13
#define OPENVDB_THROW(exception, message)
Definition: Exceptions.h:74
T Type
Definition: NanoVDB.h:384
static const int MaxNameSize
Definition: NanoVDB.h:2187
Trait to map from LEVEL to node type.
Definition: NanoVDB.h:3934
typename LowerT::ChildNodeType LeafT
Definition: OpenToNanoVDB.h:150
typename TreeT::RootNodeType RootT
Definition: OpenToNanoVDB.h:147
typename GridT::TreeType TreeT
Definition: OpenToNanoVDB.h:146
typename UpperT::ChildNodeType LowerT
Definition: OpenToNanoVDB.h:149
typename RootT::ChildNodeType UpperT
Definition: OpenToNanoVDB.h:148
openvdb::points::PointDataGrid GridT
Definition: OpenToNanoVDB.h:145
typename LeafT::ValueType ValueT
Definition: OpenToNanoVDB.h:151
typename LowerT::ChildNodeType LeafT
Definition: OpenToNanoVDB.h:137
typename TreeT::RootNodeType RootT
Definition: OpenToNanoVDB.h:134
typename GridT::TreeType TreeT
Definition: OpenToNanoVDB.h:133
typename UpperT::ChildNodeType LowerT
Definition: OpenToNanoVDB.h:136
typename RootT::ChildNodeType UpperT
Definition: OpenToNanoVDB.h:135
typename LeafT::ValueType ValueT
Definition: OpenToNanoVDB.h:138
openvdb::tools::PointIndexGrid GridT
Definition: OpenToNanoVDB.h:132
Grid trait that defines OpenVDB grids with the exact same configuration as NanoVDB grids.
Definition: OpenToNanoVDB.h:118
typename LowerT::ChildNodeType LeafT
Definition: OpenToNanoVDB.h:124
typename TreeT::RootNodeType RootT
Definition: OpenToNanoVDB.h:121
typename GridT::TreeType TreeT
Definition: OpenToNanoVDB.h:120
typename UpperT::ChildNodeType LowerT
Definition: OpenToNanoVDB.h:123
typename RootT::ChildNodeType UpperT
Definition: OpenToNanoVDB.h:122
typename LeafT::ValueType ValueT
Definition: OpenToNanoVDB.h:125
Converts OpenVDB types to NanoVDB types, e.g. openvdb::Vec3f to nanovdb::Vec3f Template specializatio...
Definition: OpenToNanoVDB.h:37
T Type
Definition: OpenToNanoVDB.h:37
static const bool value
Definition: NanoVDB.h:357
C++11 implementation of std::is_same.
Definition: NanoVDB.h:327
static constexpr bool value
Definition: NanoVDB.h:328