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Work on block compression.

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This commit is contained in:
Daviw Williams 2013-01-10 16:37:02 +01:00
parent c7937b176d
commit 7bb7be0dec
2 changed files with 6 additions and 25 deletions
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1
library/PolyVoxCore/include/PolyVoxCore/Impl/Block.h
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@ -56,7 +56,6 @@ namespace PolyVox
void setVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tValue);
void setVoxelAt(const Vector3DUint16& v3dPos, VoxelType tValue);
void fill(VoxelType tValue);
void initialise(uint16_t uSideLength);
uint32_t calculateSizeInBytes(void);

30
library/PolyVoxCore/include/PolyVoxCore/Impl/Block.inl
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@ -105,29 +105,6 @@ namespace PolyVox
setVoxelAt(v3dPos.getX(), v3dPos.getY(), v3dPos.getZ(), tValue);
}
template <typename VoxelType>
void Block<VoxelType>::fill(VoxelType tValue)
{
if(!m_bIsCompressed)
{
//The memset *may* be faster than the std::fill(), but it doesn't compile nicely
//in 64-bit mode as casting the pointer to an int causes a loss of precision.
const uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
std::fill(m_tUncompressedData, m_tUncompressedData + uNoOfVoxels, tValue);
m_bIsUncompressedDataModified = true;
}
else
{
POLYVOX_ASSERT(false, "Not implemented");
RunlengthEntry<uint16_t> rle;
rle.length = m_uSideLength*m_uSideLength*m_uSideLength;
rle.value = tValue;
m_vecCompressedData.clear();
m_vecCompressedData.push_back(rle);
}
}
template <typename VoxelType>
void Block<VoxelType>::initialise(uint16_t uSideLength)
{
@ -144,10 +121,15 @@ namespace PolyVox
m_uSideLength = uSideLength;
m_uSideLengthPower = logBase2(uSideLength);
//Create the block data
m_tUncompressedData = new VoxelType[m_uSideLength * m_uSideLength * m_uSideLength];
Block<VoxelType>::fill(VoxelType());
//Clear it (should we bother?)
const uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
std::fill(m_tUncompressedData, m_tUncompressedData + uNoOfVoxels, VoxelType());
m_bIsUncompressedDataModified = true;
//For some reason blocks start out compressed. We should probably change this.
compress();
}