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Replaced usage of our 'Array' class with native C array and got significant performance increase.

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This commit is contained in:
David Williams
2014-08-21 00:06:20 +02:00
parent 458a534bf3
commit d0aa7cd60f
2 changed files with 22 additions and 12 deletions
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10
library/PolyVoxCore/include/PolyVoxCore/MarchingCubesSurfaceExtractor.h
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@@ -156,6 +156,8 @@ namespace PolyVox
template< typename VolumeType, typename MeshType, typename ControllerType>
class MarchingCubesSurfaceExtractor
{
private:
const static int BitmaskSize = 128;
public:
MarchingCubesSurfaceExtractor(VolumeType* volData, Region region, MeshType* result, ControllerType controller, WrapMode eWrapMode = WrapModes::Border, typename VolumeType::VoxelType tBorderValue = typename VolumeType::VoxelType());
@@ -164,14 +166,14 @@ namespace PolyVox
private:
//Compute the cell bitmask for a particular slice in z.
template<bool isPrevZAvail>
uint32_t computeBitmaskForSlice(const Array2DUint8& pPreviousBitmask, Array2DUint8& pCurrentBitmask);
uint32_t computeBitmaskForSlice(uint8_t pPreviousBitmask[BitmaskSize][BitmaskSize], uint8_t pCurrentBitmask[BitmaskSize][BitmaskSize]);
//Compute the cell bitmask for a given cell.
template<bool isPrevXAvail, bool isPrevYAvail, bool isPrevZAvail>
void computeBitmaskForCell(const Array2DUint8& pPreviousBitmask, Array2DUint8& pCurrentBitmask, uint32_t uXRegSpace, uint32_t uYRegSpace);
void computeBitmaskForCell(uint8_t pPreviousBitmask[BitmaskSize][BitmaskSize], uint8_t pCurrentBitmask[BitmaskSize][BitmaskSize], uint32_t uXRegSpace, uint32_t uYRegSpace);
//Use the cell bitmasks to generate all the vertices needed for that slice
void generateVerticesForSlice(const Array2DUint8& pCurrentBitmask,
void generateVerticesForSlice(uint8_t pCurrentBitmask[BitmaskSize][BitmaskSize],
Array2DInt32& m_pCurrentVertexIndicesX,
Array2DInt32& m_pCurrentVertexIndicesY,
Array2DInt32& m_pCurrentVertexIndicesZ);
@@ -291,7 +293,7 @@ namespace PolyVox
////////////////////////////////////////////////////////////////////////////////
//Use the cell bitmasks to generate all the indices needed for that slice
void generateIndicesForSlice(const Array2DUint8& pPreviousBitmask,
void generateIndicesForSlice(uint8_t pPreviousBitmask[BitmaskSize][BitmaskSize],
const Array2DInt32& m_pPreviousVertexIndicesX,
const Array2DInt32& m_pPreviousVertexIndicesY,
const Array2DInt32& m_pPreviousVertexIndicesZ,

24
library/PolyVoxCore/include/PolyVoxCore/MarchingCubesSurfaceExtractor.inl
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@@ -52,6 +52,12 @@ namespace PolyVox
const uint32_t uArrayHeight = m_regSizeInVoxels.getUpperY() - m_regSizeInVoxels.getLowerY() + 1;
const uint32_t arraySizes[2]= {uArrayWidth, uArrayHeight}; // Array dimensions
// PolyVox has a hardcoded limit on how big the regions it can extract are. This lets us allocate various
// arrays at compile time rather than run time. If you *really* need to you can increase this by changing
// the 'BitmaskSize' constant, but you should be sure you really know what you are doing.
POLYVOX_THROW_IF(uArrayWidth > BitmaskSize, std::invalid_argument, "Requested extraction region is too large");
POLYVOX_THROW_IF(uArrayHeight > BitmaskSize, std::invalid_argument, "Requested extraction region is too large");
//For edge indices
Array2DInt32 m_pPreviousVertexIndicesX(arraySizes);
Array2DInt32 m_pPreviousVertexIndicesY(arraySizes);
@@ -60,8 +66,8 @@ namespace PolyVox
Array2DInt32 m_pCurrentVertexIndicesY(arraySizes);
Array2DInt32 m_pCurrentVertexIndicesZ(arraySizes);
Array2DUint8 pPreviousBitmask(arraySizes);
Array2DUint8 pCurrentBitmask(arraySizes);
uint8_t pPreviousBitmask[BitmaskSize][BitmaskSize];
uint8_t pCurrentBitmask[BitmaskSize][BitmaskSize];
//Create a region corresponding to the first slice
m_regSlicePrevious = m_regSizeInVoxels;
@@ -86,7 +92,8 @@ namespace PolyVox
}
std::swap(uNoOfNonEmptyCellsForSlice0, uNoOfNonEmptyCellsForSlice1);
pPreviousBitmask.swap(pCurrentBitmask);
//pPreviousBitmask.swap(pCurrentBitmask);
memcpy(pPreviousBitmask, pCurrentBitmask, BitmaskSize * BitmaskSize);
m_pPreviousVertexIndicesX.swap(m_pCurrentVertexIndicesX);
m_pPreviousVertexIndicesY.swap(m_pCurrentVertexIndicesY);
m_pPreviousVertexIndicesZ.swap(m_pCurrentVertexIndicesZ);
@@ -114,7 +121,8 @@ namespace PolyVox
}
std::swap(uNoOfNonEmptyCellsForSlice0, uNoOfNonEmptyCellsForSlice1);
pPreviousBitmask.swap(pCurrentBitmask);
//pPreviousBitmask.swap(pCurrentBitmask);
memcpy(pPreviousBitmask, pCurrentBitmask, BitmaskSize * BitmaskSize);
m_pPreviousVertexIndicesX.swap(m_pCurrentVertexIndicesX);
m_pPreviousVertexIndicesY.swap(m_pCurrentVertexIndicesY);
m_pPreviousVertexIndicesZ.swap(m_pCurrentVertexIndicesZ);
@@ -132,7 +140,7 @@ namespace PolyVox
template<typename VolumeType, typename MeshType, typename ControllerType>
template<bool isPrevZAvail>
uint32_t MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::computeBitmaskForSlice(const Array2DUint8& pPreviousBitmask, Array2DUint8& pCurrentBitmask)
uint32_t MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::computeBitmaskForSlice(uint8_t pPreviousBitmask[BitmaskSize][BitmaskSize], uint8_t pCurrentBitmask[BitmaskSize][BitmaskSize])
{
m_uNoOfOccupiedCells = 0;
@@ -198,7 +206,7 @@ namespace PolyVox
template<typename VolumeType, typename MeshType, typename ControllerType>
template<bool isPrevXAvail, bool isPrevYAvail, bool isPrevZAvail>
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::computeBitmaskForCell(const Array2DUint8& pPreviousBitmask, Array2DUint8& pCurrentBitmask, uint32_t uXRegSpace, uint32_t uYRegSpace)
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::computeBitmaskForCell(uint8_t pPreviousBitmask[BitmaskSize][BitmaskSize], uint8_t pCurrentBitmask[BitmaskSize][BitmaskSize], uint32_t uXRegSpace, uint32_t uYRegSpace)
{
uint8_t iCubeIndex = 0;
@@ -397,7 +405,7 @@ namespace PolyVox
}
template<typename VolumeType, typename MeshType, typename ControllerType>
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::generateVerticesForSlice(const Array2DUint8& pCurrentBitmask,
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::generateVerticesForSlice(uint8_t pCurrentBitmask[BitmaskSize][BitmaskSize],
Array2DInt32& m_pCurrentVertexIndicesX,
Array2DInt32& m_pCurrentVertexIndicesY,
Array2DInt32& m_pCurrentVertexIndicesZ)
@@ -537,7 +545,7 @@ namespace PolyVox
}
template<typename VolumeType, typename MeshType, typename ControllerType>
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::generateIndicesForSlice(const Array2DUint8& pPreviousBitmask,
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::generateIndicesForSlice(uint8_t pPreviousBitmask[BitmaskSize][BitmaskSize],
const Array2DInt32& m_pPreviousVertexIndicesX,
const Array2DInt32& m_pPreviousVertexIndicesY,
const Array2DInt32& m_pPreviousVertexIndicesZ,