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Splitting 'Block into CompressedBlock and UncompressedBlock.

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This commit is contained in:
David Williams
2013-07-16 14:42:43 +02:00
parent a00574351f
commit 0cfb9f5196
5 changed files with 127 additions and 48 deletions
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20
library/PolyVoxCore/include/PolyVoxCore/Impl/Block.h
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@@ -52,6 +52,26 @@ namespace PolyVox
uint32_t m_uCompressedDataLength;
uint32_t timestamp;
};
template <typename VoxelType>
class UncompressedBlock
{
public:
UncompressedBlock(uint16_t uSideLength);
~UncompressedBlock();
uint16_t getSideLength(void) const;
VoxelType getVoxel(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos) const;
VoxelType getVoxel(const Vector3DUint16& v3dPos) const;
void setVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tValue);
void setVoxelAt(const Vector3DUint16& v3dPos, VoxelType tValue);
VoxelType* m_tUncompressedData;
uint16_t m_uSideLength;
uint8_t m_uSideLengthPower;
bool m_bIsUncompressedDataModified;
};
}
#include "PolyVoxCore/Impl/Block.inl"

99
library/PolyVoxCore/include/PolyVoxCore/Impl/Block.inl
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@@ -9,16 +9,16 @@ Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
3. This notice may not be removed or altered from any source
distribution.
*******************************************************************************/
#include "PolyVoxCore/Impl/ErrorHandling.h"
@@ -35,6 +35,8 @@ freely, subject to the following restrictions:
namespace PolyVox
{
////////////////////////////////////////////////////////////////////////////////
template <typename VoxelType>
CompressedBlock<VoxelType>::CompressedBlock(uint16_t uSideLength, Compressor* pCompressor)
:m_pCompressedData(0)
@@ -63,7 +65,7 @@ namespace PolyVox
POLYVOX_ASSERT(m_pCompressedData, "Compressed data is NULL");
return m_pCompressedData;
}
template <typename VoxelType>
uint32_t CompressedBlock<VoxelType>::getCompressedDataLength(void) const
{
@@ -92,4 +94,83 @@ namespace PolyVox
uint32_t uSizeInBytes = sizeof(CompressedBlock<VoxelType>) + m_uCompressedDataLength;
return uSizeInBytes;
}
////////////////////////////////////////////////////////////////////////////////
template <typename VoxelType>
UncompressedBlock<VoxelType>::UncompressedBlock(uint16_t uSideLength)
:m_tUncompressedData(0)
,m_uSideLength(0)
,m_uSideLengthPower(0)
,m_bIsUncompressedDataModified(true)
{
// Compute the side length
m_uSideLength = uSideLength;
m_uSideLengthPower = logBase2(uSideLength);
// Allocate the data
const uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
m_tUncompressedData = new VoxelType[uNoOfVoxels];
}
template <typename VoxelType>
UncompressedBlock<VoxelType>::~UncompressedBlock()
{
delete m_tUncompressedData;
m_tUncompressedData = 0;
}
template <typename VoxelType>
uint16_t UncompressedBlock<VoxelType>::getSideLength(void) const
{
return m_uSideLength;
}
template <typename VoxelType>
VoxelType UncompressedBlock<VoxelType>::getVoxel(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos) const
{
// This is internal code not directly called by the user. For efficiency we assert rather than throwing.
POLYVOX_ASSERT(uXPos < m_uSideLength, "Supplied position is outside of the block");
POLYVOX_ASSERT(uYPos < m_uSideLength, "Supplied position is outside of the block");
POLYVOX_ASSERT(uZPos < m_uSideLength, "Supplied position is outside of the block");
POLYVOX_ASSERT(m_tUncompressedData, "No uncompressed data - block must be decompressed before accessing voxels.");
return m_tUncompressedData
[
uXPos +
uYPos * m_uSideLength +
uZPos * m_uSideLength * m_uSideLength
];
}
template <typename VoxelType>
VoxelType UncompressedBlock<VoxelType>::getVoxel(const Vector3DUint16& v3dPos) const
{
return getVoxel(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ());
}
template <typename VoxelType>
void UncompressedBlock<VoxelType>::setVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tValue)
{
// This is internal code not directly called by the user. For efficiency we assert rather than throwing.
POLYVOX_ASSERT(uXPos < m_uSideLength, "Supplied position is outside of the block");
POLYVOX_ASSERT(uYPos < m_uSideLength, "Supplied position is outside of the block");
POLYVOX_ASSERT(uZPos < m_uSideLength, "Supplied position is outside of the block");
POLYVOX_ASSERT(m_tUncompressedData, "No uncompressed data - block must be decompressed before accessing voxels.");
m_tUncompressedData
[
uXPos +
uYPos * m_uSideLength +
uZPos * m_uSideLength * m_uSideLength
] = tValue;
m_bIsUncompressedDataModified = true;
}
template <typename VoxelType>
void UncompressedBlock<VoxelType>::setVoxelAt(const Vector3DUint16& v3dPos, VoxelType tValue)
{
setVoxelAt(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), tValue);
}
}

6
library/PolyVoxCore/include/PolyVoxCore/LargeVolume.h
View File

@@ -330,16 +330,16 @@ namespace PolyVox
VoxelType getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<WrapModes::AssumeValid>, VoxelType tBorder) const;
CompressedBlock<VoxelType>* getCompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const;
VoxelType* getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const;
UncompressedBlock<VoxelType>* getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const;
void eraseBlock(typename std::map<Vector3DInt32, CompressedBlock<VoxelType>, BlockPositionCompare>::iterator itBlock) const;
// The block data
mutable std::map<Vector3DInt32, VoxelType*, BlockPositionCompare> m_pUncompressedBlockCache;
mutable std::map<Vector3DInt32, UncompressedBlock<VoxelType>*, BlockPositionCompare> m_pUncompressedBlockCache;
mutable std::map<Vector3DInt32, CompressedBlock<VoxelType>, BlockPositionCompare> m_pBlocks;
mutable uint32_t m_uTimestamper;
mutable Vector3DInt32 m_v3dLastAccessedBlockPos;
mutable VoxelType* m_pLastAccessedBlock;
mutable UncompressedBlock<VoxelType>* m_pLastAccessedBlock;
uint32_t m_uMaxNumberOfUncompressedBlocks;
uint32_t m_uCompressedBlockMemoryLimitInBytes;

46
library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl
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@@ -223,14 +223,9 @@ namespace PolyVox
const uint16_t yOffset = static_cast<uint16_t>(uYPos - (blockY << m_uBlockSideLengthPower));
const uint16_t zOffset = static_cast<uint16_t>(uZPos - (blockZ << m_uBlockSideLengthPower));
VoxelType* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
const UncompressedBlock<VoxelType>* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
return pUncompressedBlock
[
xOffset +
yOffset * m_uBlockSideLength +
zOffset * m_uBlockSideLength * m_uBlockSideLength
];
return pUncompressedBlock->getVoxel(xOffset, yOffset, zOffset);
}
else
{
@@ -317,14 +312,8 @@ namespace PolyVox
const uint16_t yOffset = static_cast<uint16_t>(uYPos - (blockY << m_uBlockSideLengthPower));
const uint16_t zOffset = static_cast<uint16_t>(uZPos - (blockZ << m_uBlockSideLengthPower));
VoxelType* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
pUncompressedBlock
[
xOffset +
yOffset * m_uBlockSideLength +
zOffset * m_uBlockSideLength * m_uBlockSideLength
] = tValue;
UncompressedBlock<VoxelType>* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
pUncompressedBlock->setVoxelAt(xOffset, yOffset, zOffset);
}
////////////////////////////////////////////////////////////////////////////////
@@ -360,14 +349,9 @@ namespace PolyVox
const uint16_t yOffset = static_cast<uint16_t>(uYPos - (blockY << m_uBlockSideLengthPower));
const uint16_t zOffset = static_cast<uint16_t>(uZPos - (blockZ << m_uBlockSideLengthPower));
VoxelType* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
UncompressedBlock<VoxelType>* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
pUncompressedBlock
[
xOffset +
yOffset * m_uBlockSideLength +
zOffset * m_uBlockSideLength * m_uBlockSideLength
] = tValue;
pUncompressedBlock->setVoxelAt(xOffset, yOffset, zOffset, tValue);
//Return true to indicate that we modified a voxel.
return true;
@@ -634,7 +618,7 @@ namespace PolyVox
}
template <typename VoxelType>
VoxelType* LargeVolume<VoxelType>::getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const
UncompressedBlock<VoxelType>* LargeVolume<VoxelType>::getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const
{
Vector3DInt32 v3dBlockPos(uBlockX, uBlockY, uBlockZ);
@@ -651,14 +635,14 @@ namespace PolyVox
CompressedBlock<VoxelType>* block = getCompressedBlock(uBlockX, uBlockY, uBlockZ);
typename std::map<Vector3DInt32, VoxelType*, BlockPositionCompare>::iterator itUncompressedBlock = m_pUncompressedBlockCache.find(v3dBlockPos);
typename std::map<Vector3DInt32, UncompressedBlock<VoxelType>*, BlockPositionCompare>::iterator itUncompressedBlock = m_pUncompressedBlockCache.find(v3dBlockPos);
// check whether the block is already loaded
if(itUncompressedBlock == m_pUncompressedBlockCache.end())
{
VoxelType* pUncompressedBlock = new VoxelType[m_uBlockSideLength * m_uBlockSideLength * m_uBlockSideLength];
UncompressedBlock<VoxelType>* pUncompressedBlock = new UncompressedBlock<VoxelType>(m_uBlockSideLength);
void* pSrcData = reinterpret_cast<void*>(block->m_pCompressedData);
void* pDstData = reinterpret_cast<void*>(pUncompressedBlock);
void* pDstData = reinterpret_cast<void*>(pUncompressedBlock->m_tUncompressedData);
uint32_t uSrcLength = block->m_uCompressedDataLength;
uint32_t uDstLength = m_uBlockSideLength * m_uBlockSideLength * m_uBlockSideLength * sizeof(VoxelType);
@@ -816,14 +800,8 @@ namespace PolyVox
const uint16_t yOffset = static_cast<uint16_t>(uYPos - (blockY << m_uBlockSideLengthPower));
const uint16_t zOffset = static_cast<uint16_t>(uZPos - (blockZ << m_uBlockSideLengthPower));
VoxelType* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
return pUncompressedBlock
[
xOffset +
yOffset * m_uBlockSideLength +
zOffset * m_uBlockSideLength * m_uBlockSideLength
];
UncompressedBlock<VoxelType>* pUncompressedBlock = getUncompressedBlock(blockX, blockY, blockZ);
return pUncompressedBlock->getVoxel(xOffset, yOffset, zOffset);
}
}

4
library/PolyVoxCore/include/PolyVoxCore/LargeVolumeSampler.inl
View File

@@ -119,9 +119,9 @@ namespace PolyVox
uYPosInBlock * this->mVolume->m_uBlockSideLength +
uZPosInBlock * this->mVolume->m_uBlockSideLength * this->mVolume->m_uBlockSideLength;
VoxelType* pUncompressedCurrentBlock = this->mVolume->getUncompressedBlock(uXBlock, uYBlock, uZBlock);
UncompressedBlock<VoxelType>* pUncompressedCurrentBlock = this->mVolume->getUncompressedBlock(uXBlock, uYBlock, uZBlock);
mCurrentVoxel = pUncompressedCurrentBlock + uVoxelIndexInBlock;
mCurrentVoxel = pUncompressedCurrentBlock->m_tUncompressedData + uVoxelIndexInBlock;
}
else
{