mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-16 17:22:55 +00:00
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
//
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//============================================================================
|
|
#ifndef vtk_m_worklet_zfp_decode2_h
|
|
#define vtk_m_worklet_zfp_decode2_h
|
|
|
|
#include <vtkm/Types.h>
|
|
#include <vtkm/internal/ExportMacros.h>
|
|
|
|
#include <vtkm/worklet/WorkletMapField.h>
|
|
#include <vtkm/worklet/zfp/ZFPBlockWriter.h>
|
|
#include <vtkm/worklet/zfp/ZFPDecode.h>
|
|
#include <vtkm/worklet/zfp/ZFPFunctions.h>
|
|
#include <vtkm/worklet/zfp/ZFPStructs.h>
|
|
#include <vtkm/worklet/zfp/ZFPTypeInfo.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace worklet
|
|
{
|
|
namespace zfp
|
|
{
|
|
|
|
template <typename Scalar, typename PortalType>
|
|
VTKM_EXEC inline void ScatterPartial2(const Scalar* q,
|
|
PortalType& scalars,
|
|
const vtkm::Id2 dims,
|
|
vtkm::Id offset,
|
|
vtkm::Int32 nx,
|
|
vtkm::Int32 ny)
|
|
{
|
|
vtkm::Id x, y;
|
|
for (y = 0; y < ny; y++, offset += dims[0] - nx, q += 4 - nx)
|
|
{
|
|
for (x = 0; x < nx; x++, offset++, q++)
|
|
{
|
|
scalars.Set(offset, *q);
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename Scalar, typename PortalType>
|
|
VTKM_EXEC inline void Scatter2(const Scalar* q,
|
|
PortalType& scalars,
|
|
const vtkm::Id2 dims,
|
|
vtkm::Id offset)
|
|
{
|
|
for (vtkm::Id y = 0; y < 4; y++, offset += dims[0] - 4)
|
|
{
|
|
for (vtkm::Id x = 0; x < 4; x++, ++offset)
|
|
{
|
|
scalars.Set(offset, *q++);
|
|
} // x
|
|
} // y
|
|
}
|
|
|
|
struct Decode2 : public vtkm::worklet::WorkletMapField
|
|
{
|
|
protected:
|
|
vtkm::Id2 Dims; // field dims
|
|
vtkm::Id2 PaddedDims; // dims padded to a multiple of zfp block size
|
|
vtkm::Id2 ZFPDims; // zfp block dims
|
|
vtkm::UInt32 MaxBits; // bits per zfp block
|
|
public:
|
|
Decode2(const vtkm::Id2 dims, const vtkm::Id2 paddedDims, const vtkm::UInt32 maxbits)
|
|
: Dims(dims)
|
|
, PaddedDims(paddedDims)
|
|
, MaxBits(maxbits)
|
|
{
|
|
ZFPDims[0] = PaddedDims[0] / 4;
|
|
ZFPDims[1] = PaddedDims[1] / 4;
|
|
}
|
|
using ControlSignature = void(FieldIn, WholeArrayOut, WholeArrayIn bitstream);
|
|
|
|
template <typename InputScalarPortal, typename BitstreamPortal>
|
|
VTKM_EXEC void operator()(const vtkm::Id blockIdx,
|
|
InputScalarPortal& scalars,
|
|
BitstreamPortal& stream) const
|
|
{
|
|
using Scalar = typename InputScalarPortal::ValueType;
|
|
constexpr vtkm::Int32 BlockSize = 16;
|
|
Scalar fblock[BlockSize];
|
|
// clear
|
|
for (vtkm::Int32 i = 0; i < BlockSize; ++i)
|
|
{
|
|
fblock[i] = static_cast<Scalar>(0);
|
|
}
|
|
|
|
|
|
zfp::zfp_decode<BlockSize>(
|
|
fblock, vtkm::Int32(MaxBits), static_cast<vtkm::UInt32>(blockIdx), stream);
|
|
|
|
vtkm::Id2 zfpBlock;
|
|
zfpBlock[0] = blockIdx % ZFPDims[0];
|
|
zfpBlock[1] = (blockIdx / ZFPDims[0]) % ZFPDims[1];
|
|
vtkm::Id2 logicalStart = zfpBlock * vtkm::Id(4);
|
|
|
|
vtkm::Id offset = logicalStart[0] + logicalStart[1] * Dims[0];
|
|
bool partial = false;
|
|
if (logicalStart[0] + 4 > Dims[0])
|
|
partial = true;
|
|
if (logicalStart[1] + 4 > Dims[1])
|
|
partial = true;
|
|
if (partial)
|
|
{
|
|
const vtkm::Int32 nx =
|
|
logicalStart[0] + 4 > Dims[0] ? vtkm::Int32(Dims[0] - logicalStart[0]) : vtkm::Int32(4);
|
|
const vtkm::Int32 ny =
|
|
logicalStart[1] + 4 > Dims[1] ? vtkm::Int32(Dims[1] - logicalStart[1]) : vtkm::Int32(4);
|
|
ScatterPartial2(fblock, scalars, Dims, offset, nx, ny);
|
|
}
|
|
else
|
|
{
|
|
Scatter2(fblock, scalars, Dims, offset);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
}
|
|
} // namespace vtkm::worklet::zfp
|
|
#endif
|