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Added extra lookup tables to avoid the need to multiply y/z deltas by 2/4 each time.

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This commit is contained in:
David Williams 2015-03-31 23:58:01 +02:00
parent 60612c5583
commit 5d220c5d57
1 changed files with 9 additions and 7 deletions
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16
include/PolyVox/PagedVolumeSampler.inl
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@ -30,16 +30,18 @@ freely, subject to the following restrictions:
#define CAN_GO_NEG_Z(val) ((val % this->mVolume->m_uChunkSideLength != 0)) #define CAN_GO_NEG_Z(val) ((val % this->mVolume->m_uChunkSideLength != 0))
#define CAN_GO_POS_Z(val) (((val + 1) % this->mVolume->m_uChunkSideLength != 0)) #define CAN_GO_POS_Z(val) (((val + 1) % this->mVolume->m_uChunkSideLength != 0))
#define NEG_X_DELTA (-(dp[this->m_uXPosInChunk - 1])) #define NEG_X_DELTA (-(deltaX[this->m_uXPosInChunk-1]))
#define POS_X_DELTA (dp[this->m_uXPosInChunk]) #define POS_X_DELTA (deltaX[this->m_uXPosInChunk])
#define NEG_Y_DELTA (-(dp[this->m_uYPosInChunk - 1] * 2)) #define NEG_Y_DELTA (-(deltaY[this->m_uYPosInChunk-1]))
#define POS_Y_DELTA (dp[this->m_uYPosInChunk] * 2) #define POS_Y_DELTA (deltaY[this->m_uYPosInChunk])
#define NEG_Z_DELTA (-(dp[this->m_uZPosInChunk - 1]) * 4) #define NEG_Z_DELTA (-(deltaZ[this->m_uZPosInChunk-1]))
#define POS_Z_DELTA (dp[this->m_uZPosInChunk] * 4) #define POS_Z_DELTA (deltaZ[this->m_uZPosInChunk])
namespace PolyVox namespace PolyVox
{ {
static const std::array<uint32_t, 255> dp = { 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 28087, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 224695, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 28087, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 1797559, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 28087, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 224695, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 28087, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1 }; static const std::array<uint32_t, 32> deltaX = { 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1, 3511, 1, 7, 1, 55, 1, 7, 1, 439, 1, 7, 1, 55, 1, 7, 1 };
static const std::array<uint32_t, 32> deltaY = { 2, 14, 2, 110, 2, 14, 2, 878, 2, 14, 2, 110, 2, 14, 2, 7022, 2, 14, 2, 110, 2, 14, 2, 878, 2, 14, 2, 110, 2, 14, 2 };
static const std::array<uint32_t, 32> deltaZ = { 4, 28, 4, 220, 4, 28, 4, 1756, 4, 28, 4, 220, 4, 28, 4, 14044, 4, 28, 4, 220, 4, 28, 4, 1756, 4, 28, 4, 220, 4, 28, 4 };
template <typename VoxelType> template <typename VoxelType>
PagedVolume<VoxelType>::Sampler::Sampler(PagedVolume<VoxelType>* volume) PagedVolume<VoxelType>::Sampler::Sampler(PagedVolume<VoxelType>* volume)