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More work on compression and bug fixes.

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This commit is contained in:
David Williams 2011-02-06 23:23:01 +00:00
parent 4621ef8091
commit f13e9161f8
5 changed files with 30 additions and 27 deletions
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2
examples/Basic/main.cpp
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@ -421,7 +421,7 @@ int main(int argc, char *argv[])
openGLWidget.show();
//Create an empty volume and then place a sphere in it
Volume<MaterialDensityPair44> volData(256, 256, 256);
Volume<MaterialDensityPair44> volData(1024, 1024, 1024);
//createSphereInVolume(volData, 30);
createPerlinVolume(volData);

3
library/PolyVoxCore/include/PolyVoxImpl/Block.h
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@ -59,10 +59,9 @@ namespace PolyVox
uint16_t m_uSideLength;
uint8_t m_uSideLengthPower;
VoxelType* m_tCompressedData;
VoxelType* m_tUncompressedData;
bool m_bIsCompressed;
uint32_t m_uTimestamp;
uint64_t m_uTimestamp;
std::vector<uint32_t> runlengths;
std::vector<VoxelType> values;

38
library/PolyVoxCore/include/PolyVoxImpl/Block.inl
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@ -35,7 +35,6 @@ namespace PolyVox
Block<VoxelType>::Block(uint16_t uSideLength)
:m_uSideLength(0)
,m_uSideLengthPower(0)
,m_tCompressedData(0)
,m_tUncompressedData(0)
,m_bIsCompressed(true)
,m_uTimestamp(0)
@ -55,33 +54,37 @@ namespace PolyVox
template <typename VoxelType>
Block<VoxelType>::~Block()
{
delete[] m_tCompressedData;
m_tCompressedData = 0;
delete[] m_tUncompressedData;
m_tUncompressedData = 0;
}
template <typename VoxelType>
Block<VoxelType>& Block<VoxelType>::operator=(const Block<VoxelType>& rhs)
{
//We don't often need to assign blocks as they should be passed around by pointer.
//And I'm pretty sure we don't want to be passing around uncompressed ones becauses
//it means duplicating the uncompressed data which is expensive. This assert is to
//make sure that uncompressed blocks don't get assigned by accident.
assert(rhs.m_bIsCompressed == true);
if (this == &rhs)
{
return *this;
}
//If this fails an exception will be thrown. Memory is not
//allocated and there is nothing else in this class to clean up
m_tCompressedData = new VoxelType[rhs.m_uSideLength * rhs.m_uSideLength * rhs.m_uSideLength];
//Copy the data
m_uSideLength = rhs.m_uSideLength;
m_uSideLengthPower = rhs.m_uSideLengthPower;
memcpy(m_tCompressedData, rhs.m_tCompressedData, m_uSideLength * m_uSideLength * m_uSideLength * sizeof(VoxelType));
m_bIsCompressed = rhs.m_bIsCompressed;
m_uTimestamp = rhs.m_uTimestamp;
runlengths = rhs.runlengths;
values = rhs.values;
if(m_bIsCompressed == false)
{
m_tUncompressedData = new VoxelType[rhs.m_uSideLength * rhs.m_uSideLength * rhs.m_uSideLength];
memcpy(m_tUncompressedData, rhs.m_tUncompressedData, m_uSideLength * m_uSideLength * m_uSideLength * sizeof(VoxelType));
}
m_uTimestamp = rhs.m_uTimestamp;
return *this;
}
@ -146,7 +149,6 @@ namespace PolyVox
assert(m_tUncompressedData);
//memset(m_tCompressedData, (int)tValue, m_uSideLength * m_uSideLength * m_uSideLength * sizeof(VoxelType));
const uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
std::fill(m_tUncompressedData, m_tUncompressedData + uNoOfVoxels, tValue);
}
@ -167,13 +169,17 @@ namespace PolyVox
m_uSideLength = uSideLength;
m_uSideLengthPower = logBase2(uSideLength);
if(m_bIsCompressed == false)
{
//Delete the old data
delete[] m_tCompressedData;
m_tCompressedData = 0;
delete[] m_tUncompressedData;
m_tUncompressedData = 0;
//If this fails an exception will be thrown. Memory is not
//allocated and there is nothing else in this class to clean up
m_tCompressedData = new VoxelType[m_uSideLength * m_uSideLength * m_uSideLength];
m_tUncompressedData = new VoxelType[m_uSideLength * m_uSideLength * m_uSideLength];
}
}
template <typename VoxelType>
@ -181,7 +187,7 @@ namespace PolyVox
{
uint32_t uSizeInChars = sizeof(Block<VoxelType>);
if(m_tCompressedData != 0)
if(m_tUncompressedData != 0)
{
const uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
uSizeInChars += uNoOfVoxels * sizeof(VoxelType);
@ -193,7 +199,6 @@ namespace PolyVox
template <typename VoxelType>
void Block<VoxelType>::compress(void)
{
//memcpy(m_tCompressedData, m_tUncompressedData, sizeof(VoxelType) * m_uSideLength * m_uSideLength * m_uSideLength);
VoxelType current;
uint32_t runLength = 0;
uint32_t uNoOfVoxels = m_uSideLength * m_uSideLength * m_uSideLength;
@ -241,7 +246,6 @@ namespace PolyVox
m_tUncompressedData = new VoxelType[m_uSideLength * m_uSideLength * m_uSideLength];
//memcpy(m_tUncompressedData, m_tCompressedData, sizeof(VoxelType) * m_uSideLength * m_uSideLength * m_uSideLength);
VoxelType* pUncompressedData = m_tUncompressedData;
for(uint32_t ct = 0; ct < runlengths.size(); ++ct)
{

2
library/PolyVoxCore/include/Volume.h
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@ -179,7 +179,7 @@ namespace PolyVox
uint16_t m_uLongestSideLength;
uint16_t m_uShortestSideLength;
float m_fDiagonalLength;
mutable uint32_t m_uTimestamper;
mutable uint64_t m_uTimestamper;
};
//Some handy typedefs

4
library/PolyVoxCore/include/Volume.inl
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@ -388,11 +388,11 @@ namespace PolyVox
return block;
}
const uint32_t MaxUncompressedBlocks = 10;
const uint32_t MaxUncompressedBlocks = 1000;
if(m_pUncompressedBlocks.size() == MaxUncompressedBlocks)
{
Block<VoxelType>* pLeastRecentlyUsedBlock = 0;
uint32_t uLeastRecentTimestamp = 100000000;
uint32_t uLeastRecentTimestamp = 1000000000000000;
for(std::set<Block<VoxelType>*>::iterator iter = m_pUncompressedBlocks.begin(); iter != m_pUncompressedBlocks.end(); iter++)
{
if((*iter)->m_uTimestamp < uLeastRecentTimestamp)