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Starting some refactoring of the LargeVolume such that the uncompressed blocks are the 'main' representation, rather than the compressed block being the main version and the uncompressed blocks simply being a cached version. I hope this simplifies and improves the code.

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This commit is contained in:
David Williams 2013-07-25 15:51:30 +02:00
parent cf9b54e5ab
commit f4f85551c6
1 changed files with 30 additions and 4 deletions
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34
library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl
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@ -713,13 +713,39 @@ namespace PolyVox
//the time stamp. If we updated it everytime then that would be every time we touched
//a voxel, which would overflow a uint32_t and require us to use a uint64_t instead.
//This check should also provide a significant speed boost as usually it is true.
if((v3dBlockPos == m_v3dLastAccessedBlockPos) && (m_pLastAccessedBlock != 0))
/*if((v3dBlockPos == m_v3dLastAccessedBlockPos) && (m_pLastAccessedBlock != 0))
{
return m_pLastAccessedBlock;
}*/
UncompressedBlock<VoxelType>* pUncompressedBlock = 0;
typename UncompressedBlockMap::iterator itUncompressedBlock = m_pUncompressedBlockCache.find(v3dBlockPos);
// check whether the block is already loaded
if(itUncompressedBlock != m_pUncompressedBlockCache.end())
{
pUncompressedBlock = itUncompressedBlock->second;
}
//else if(check compressed list...)
//{
//}
else
{
// At this point we just create a new block.
pUncompressedBlock = new UncompressedBlock<VoxelType>(m_uBlockSideLength);
m_pUncompressedBlockCache.insert(std::make_pair(v3dBlockPos, pUncompressedBlock));
// Our block cache may now have grown too large. Flush some entries is necessary.
// FIXME - Watch out for flushing the block we just created!
//flushExcessiveCacheEntries();
}
pUncompressedBlock->m_uBlockLastAccessed = ++m_uTimestamper;
//Gets the block and marks that we accessed it
CompressedBlock<VoxelType>* block = getCompressedBlock(uBlockX, uBlockY, uBlockZ);
/*CompressedBlock<VoxelType>* block = getCompressedBlock(uBlockX, uBlockY, uBlockZ);
typename UncompressedBlockMap::iterator itUncompressedBlock = m_pUncompressedBlockCache.find(v3dBlockPos);
// check whether the block is already loaded
@ -743,9 +769,9 @@ namespace PolyVox
// Our block cache may now have grown too large. Fluch some entries is necessary.
flushExcessiveCacheEntries();
}
}*/
m_pLastAccessedBlock = (*itUncompressedBlock).second;
m_pLastAccessedBlock = pUncompressedBlock;
m_v3dLastAccessedBlockPos = v3dBlockPos;
return m_pLastAccessedBlock;