mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 02:55:47 +00:00
137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
#ifndef vtk_m_worklet_zfp_decode2_h
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#define vtk_m_worklet_zfp_decode2_h
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#include <vtkm/Types.h>
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#include <vtkm/internal/ExportMacros.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/zfp/ZFPBlockWriter.h>
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#include <vtkm/worklet/zfp/ZFPDecode.h>
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#include <vtkm/worklet/zfp/ZFPFunctions.h>
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#include <vtkm/worklet/zfp/ZFPStructs.h>
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#include <vtkm/worklet/zfp/ZFPTypeInfo.h>
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namespace vtkm
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{
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namespace worklet
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{
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namespace zfp
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{
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template <typename Scalar, typename PortalType>
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VTKM_EXEC inline void ScatterPartial2(const Scalar* q,
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PortalType& scalars,
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const vtkm::Id2 dims,
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vtkm::Id offset,
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vtkm::Int32 nx,
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vtkm::Int32 ny)
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{
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vtkm::Id x, y;
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for (y = 0; y < ny; y++, offset += dims[0] - nx, q += 4 - nx)
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{
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for (x = 0; x < nx; x++, offset++, q++)
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{
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scalars.Set(offset, *q);
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}
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}
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}
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template <typename Scalar, typename PortalType>
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VTKM_EXEC inline void Scatter2(const Scalar* q,
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PortalType& scalars,
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const vtkm::Id2 dims,
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vtkm::Id offset)
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{
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for (vtkm::Id y = 0; y < 4; y++, offset += dims[0] - 4)
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{
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for (vtkm::Id x = 0; x < 4; x++, ++offset)
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{
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scalars.Set(offset, *q++);
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} // x
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} // y
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}
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struct Decode2 : public vtkm::worklet::WorkletMapField
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{
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protected:
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vtkm::Id2 Dims; // field dims
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vtkm::Id2 PaddedDims; // dims padded to a multiple of zfp block size
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vtkm::Id2 ZFPDims; // zfp block dims
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vtkm::UInt32 MaxBits; // bits per zfp block
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public:
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Decode2(const vtkm::Id2 dims, const vtkm::Id2 paddedDims, const vtkm::UInt32 maxbits)
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: Dims(dims)
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, PaddedDims(paddedDims)
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, MaxBits(maxbits)
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{
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ZFPDims[0] = PaddedDims[0] / 4;
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ZFPDims[1] = PaddedDims[1] / 4;
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}
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using ControlSignature = void(FieldIn<>, WholeArrayOut<>, WholeArrayIn<> bitstream);
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using ExecutionSignature = void(_1, _2, _3);
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template <typename InputScalarPortal, typename BitstreamPortal>
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VTKM_EXEC void operator()(const vtkm::Id blockIdx,
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InputScalarPortal& scalars,
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BitstreamPortal& stream) const
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{
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using Scalar = typename InputScalarPortal::ValueType;
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constexpr vtkm::Int32 BlockSize = 16;
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Scalar fblock[BlockSize];
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// clear
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for (vtkm::Int32 i = 0; i < BlockSize; ++i)
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{
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fblock[i] = static_cast<Scalar>(0);
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}
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zfp::zfp_decode<BlockSize>(fblock, MaxBits, blockIdx, stream);
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//for(int i = 0; i < BlockSize; ++i)
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//{
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// std::cout<<" "<<fblock[i];
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//}
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std::cout << "\n";
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vtkm::Id2 zfpBlock;
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zfpBlock[0] = blockIdx % ZFPDims[0];
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zfpBlock[1] = (blockIdx / ZFPDims[0]) % ZFPDims[1];
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vtkm::Id2 logicalStart = zfpBlock * vtkm::Id(4);
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//std::cout<<"Block ID "<<blockIdx<<"\n";
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//std::cout<<"ZFP Block "<<zfpBlock<<"\n";
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//std::cout<<"logicalStart Start "<<logicalStart<<"\n";
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// get the offset into the field
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//vtkm::Id offset = (zfpBlock[2]*4*ZFPDims[1] + zfpBlock[1] * 4)*ZFPDims[0] * 4 + zfpBlock[0] * 4;
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vtkm::Id offset = logicalStart[0] + logicalStart[1] * Dims[0];
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//std::cout<<"ZFP block offset "<<offset<<"\n";
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bool partial = false;
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if (logicalStart[0] + 4 > Dims[0])
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partial = true;
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if (logicalStart[1] + 4 > Dims[1])
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partial = true;
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//std::cout<<"Dims "<<Dims<<"\n";
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if (partial)
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{
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const vtkm::Int32 nx =
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logicalStart[0] + 4 > Dims[0] ? vtkm::Int32(Dims[0] - logicalStart[0]) : vtkm::Int32(4);
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const vtkm::Int32 ny =
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logicalStart[1] + 4 > Dims[1] ? vtkm::Int32(Dims[1] - logicalStart[1]) : vtkm::Int32(4);
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//std::cout<<"Partial block "<<logicalStart<<" offset "<<offset<<"\n";
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//std::cout<<"Nx "<<nx<<" "<<ny<<" "<<nz<<"\n";
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ScatterPartial2(fblock, scalars, Dims, offset, nx, ny);
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}
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else
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{
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//std::cout<<"FULL block "<<zfpBlock<<"\n";
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Scatter2(fblock, scalars, Dims, offset);
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}
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}
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};
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}
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}
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} // namespace vtkm::worklet::zfp
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#endif
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