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Revert "Added typedef for ChunkKey."

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This reverts commit 905ec27f47.
This commit is contained in:
David Williams
2015-03-21 14:40:30 +01:00
parent f574563672
commit 0c619ebec7
3 changed files with 29 additions and 18 deletions
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35
include/PolyVox/PagedVolume.h
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@@ -281,31 +281,42 @@ namespace PolyVox
PagedVolume& operator=(const PagedVolume& rhs);
private:
typedef uint64_t ChunkKey;
/*struct ChunkKey
{
ChunkKey(int32_t x, int32_t y, int32_t z) : iZPos(z), iYPos(y), iXPos(x), iValid(~0) {}
int64_t iZPos : 10;
int64_t iYPos : 10;
int64_t iXPos : 10;
ChunkKey posToChunkKey(int32_t iXPos, int32_t iYPos, int32_t iZPos) const
// Should only be true when the last access chunk pointer is valid,
// so we don't need to have a seperate check for that before using it.
int64_t iValid : 2;
};
static_assert(sizeof(ChunkKey) == sizeof(int64_t), "");*/
uint64_t posToChunkKey(int32_t iXPos, int32_t iYPos, int32_t iZPos) const
{
// Bit-shifting of signed integer values has various issues with undefined or implementation-defined behaviour.
// Therefore we cast to unsigned to avoid these (we only care about the bit pattern anyway, not the actual value).
const ChunkKey uXPos = static_cast<ChunkKey>(iXPos);
const ChunkKey uYPos = static_cast<ChunkKey>(iYPos);
const ChunkKey uZPos = static_cast<ChunkKey>(iZPos);
const uint64_t uXPos = static_cast<uint64_t>(iXPos);
const uint64_t uYPos = static_cast<uint64_t>(iYPos);
const uint64_t uZPos = static_cast<uint64_t>(iZPos);
const ChunkKey xKey = ((uXPos >> m_uChunkSideLengthPower) & 0x3FF) << 20;
const ChunkKey yKey = ((uYPos >> m_uChunkSideLengthPower) & 0x3FF) << 10;
const ChunkKey zKey = ((uZPos >> m_uChunkSideLengthPower) & 0x3FF);
const uint64_t xKey = ((uXPos >> m_uChunkSideLengthPower) & 0x3FF) << 20;
const uint64_t yKey = ((uYPos >> m_uChunkSideLengthPower) & 0x3FF) << 10;
const uint64_t zKey = ((uZPos >> m_uChunkSideLengthPower) & 0x3FF);
const ChunkKey key = 0x80000000 | xKey | yKey | zKey;
const uint64_t key = 0x80000000 | xKey | yKey | zKey;
return key;
}
Chunk* getChunk(ChunkKey iKeyAsInt32) const;
Chunk* getChunk(uint64_t iKeyAsInt32) const;
mutable ChunkKey m_v3dLastAccessedChunkKey = 0;
mutable uint64_t m_v3dLastAccessedChunkKey = 0;
mutable Chunk* m_pLastAccessedChunk = nullptr;
mutable std::unordered_map<ChunkKey, std::unique_ptr< Chunk > > m_mapChunks;
mutable std::unordered_map<uint64_t, std::unique_ptr< Chunk > > m_mapChunks;
mutable uint32_t m_uTimestamper = 0;