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Split come code into getCompressedBlock() function.

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This commit is contained in:
David Williams 2013-07-11 14:26:38 +02:00
parent 056064409d
commit a589c6e4ac
2 changed files with 29 additions and 17 deletions
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1
library/PolyVoxCore/include/PolyVoxCore/LargeVolume.h
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@ -329,6 +329,7 @@ namespace PolyVox
VoxelType getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<WrapModes::Border>, VoxelType tBorder) const;
VoxelType getVoxelImpl(int32_t uXPos, int32_t uYPos, int32_t uZPos, WrapModeType<WrapModes::AssumeValid>, VoxelType tBorder) const;
Block<VoxelType>* getCompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const;
Block<VoxelType>* getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const;
void eraseBlock(typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itBlock) const;

45
library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl
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@ -589,20 +589,10 @@ namespace PolyVox
}
template <typename VoxelType>
Block<VoxelType>* LargeVolume<VoxelType>::getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const
Block<VoxelType>* LargeVolume<VoxelType>::getCompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const
{
Vector3DInt32 v3dBlockPos(uBlockX, uBlockY, uBlockZ);
//Check if we have the same block as last time, if so there's no need to even update
//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))
{
POLYVOX_ASSERT(m_pLastAccessedBlock->hasUncompressedData(), "Last accessed block has no uncompressed data.");
return m_pLastAccessedBlock;
}
typename std::map<Vector3DInt32, Block<VoxelType>, BlockPositionCompare>::iterator itBlock = m_pBlocks.find(v3dBlockPos);
// check whether the block is already loaded
if(itBlock == m_pBlocks.end())
@ -627,9 +617,30 @@ namespace PolyVox
m_v3dLastAccessedBlockPos = v3dBlockPos;
m_pLastAccessedBlock = &block;
if(block.hasUncompressedData())
{
return m_pLastAccessedBlock;
}
template <typename VoxelType>
Block<VoxelType>* LargeVolume<VoxelType>::getUncompressedBlock(int32_t uBlockX, int32_t uBlockY, int32_t uBlockZ) const
{
Vector3DInt32 v3dBlockPos(uBlockX, uBlockY, uBlockZ);
//Check if we have the same block as last time, if so there's no need to even update
//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))
{
POLYVOX_ASSERT(m_pLastAccessedBlock->hasUncompressedData(), "Last accessed block has no uncompressed data.");
return m_pLastAccessedBlock;
}
//Get the block and mark that we accessed it
Block<VoxelType>* block = getCompressedBlock(uBlockX, uBlockY, uBlockZ);
if(block->hasUncompressedData())
{
return block;
}
//If we are allowed to compress then check whether we need to
@ -655,16 +666,16 @@ namespace PolyVox
//We don't actually remove any elements from this vector, we
//simply change the pointer to point at the new uncompressed bloack.
m_vecBlocksWithUncompressedData[leastRecentlyUsedBlockIndex] = &block;
m_vecBlocksWithUncompressedData[leastRecentlyUsedBlockIndex] = block;
}
else
{
m_vecBlocksWithUncompressedData.push_back(&block);
m_vecBlocksWithUncompressedData.push_back(block);
}
block.createUncompressedData();
block->createUncompressedData();
m_pLastAccessedBlock = &(block);
m_pLastAccessedBlock = block;
POLYVOX_ASSERT(m_pLastAccessedBlock->m_tUncompressedData, "Block has no uncompressed data");
return m_pLastAccessedBlock;
}