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glm/test/gtx/gtx_bit.cpp

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///////////////////////////////////////////////////////////////////////////////////////////////////
// OpenGL Mathematics Copyright (c) 2005 - 2012 G-Truc Creation (www.g-truc.net)
///////////////////////////////////////////////////////////////////////////////////////////////////
// Created : 2010-09-16
// Updated : 2010-09-16
// Licence : This source is under MIT licence
// File : test/gtx/bit.cpp
///////////////////////////////////////////////////////////////////////////////////////////////////
#include <glm/glm.hpp>
#include <glm/gtc/type_precision.hpp>
#include <glm/gtx/bit.hpp>
#include <iostream>
#include <vector>
#include <ctime>
#include <emmintrin.h>
enum result
{
SUCCESS,
FAIL,
ASSERT,
STATIC_ASSERT
};
namespace extractField
{
template <typename genType, typename sizeType>
struct type
{
genType Value;
sizeType BitFirst;
sizeType BitCount;
genType Return;
result Result;
};
typedef type<glm::uint64, glm::uint> typeU64;
#if(((GLM_COMPILER & GLM_COMPILER_GCC) == GLM_COMPILER_GCC) && (GLM_COMPILER < GLM_COMPILER_GCC44))
typeU64 const Data64[] =
{
{0xffffffffffffffffLLU, 8, 0, 0x0000000000000000LLU, SUCCESS},
{0x0000000000000000LLU, 0,64, 0x0000000000000000LLU, SUCCESS},
{0xffffffffffffffffLLU, 0,64, 0xffffffffffffffffLLU, SUCCESS},
{0x0f0f0f0f0f0f0f0fLLU, 0,64, 0x0f0f0f0f0f0f0f0fLLU, SUCCESS},
{0x0000000000000000LLU, 8, 0, 0x0000000000000000LLU, SUCCESS},
{0x8000000000000000LLU,63, 1, 0x0000000000000001LLU, SUCCESS},
{0x7fffffffffffffffLLU,63, 1, 0x0000000000000000LLU, SUCCESS},
{0x0000000000000300LLU, 8, 8, 0x0000000000000003LLU, SUCCESS},
{0x000000000000ff00LLU, 8, 8, 0x00000000000000ffLLU, SUCCESS},
{0xfffffffffffffff0LLU, 0, 5, 0x0000000000000010LLU, SUCCESS},
{0x00000000000000ffLLU, 1, 3, 0x0000000000000007LLU, SUCCESS},
{0x00000000000000ffLLU, 0, 3, 0x0000000000000007LLU, SUCCESS},
{0x0000000000000000LLU, 0, 2, 0x0000000000000000LLU, SUCCESS},
{0xffffffffffffffffLLU, 0, 8, 0x00000000000000ffLLU, SUCCESS},
{0xffffffff00000000LLU,32,32, 0x00000000ffffffffLLU, SUCCESS},
{0xfffffffffffffff0LLU, 0, 8, 0x0000000000000000LLU, FAIL},
{0xffffffffffffffffLLU,32,32, 0x0000000000000000LLU, FAIL},
//{0xffffffffffffffffLLU,64, 1, 0x0000000000000000LLU, ASSERT}, // Throw an assert
//{0xffffffffffffffffLLU, 0,65, 0x0000000000000000LLU, ASSERT}, // Throw an assert
//{0xffffffffffffffffLLU,33,32, 0x0000000000000000LLU, ASSERT}, // Throw an assert
};
#else
typeU64 const Data64[] =
{
{0xffffffffffffffff, 8, 0, 0x0000000000000000, SUCCESS},
{0x0000000000000000, 0,64, 0x0000000000000000, SUCCESS},
{0xffffffffffffffff, 0,64, 0xffffffffffffffff, SUCCESS},
{0x0f0f0f0f0f0f0f0f, 0,64, 0x0f0f0f0f0f0f0f0f, SUCCESS},
{0x0000000000000000, 8, 0, 0x0000000000000000, SUCCESS},
{0x8000000000000000,63, 1, 0x0000000000000001, SUCCESS},
{0x7fffffffffffffff,63, 1, 0x0000000000000000, SUCCESS},
{0x0000000000000300, 8, 8, 0x0000000000000003, SUCCESS},
{0x000000000000ff00, 8, 8, 0x00000000000000ff, SUCCESS},
{0xfffffffffffffff0, 0, 5, 0x0000000000000010, SUCCESS},
{0x00000000000000ff, 1, 3, 0x0000000000000007, SUCCESS},
{0x00000000000000ff, 0, 3, 0x0000000000000007, SUCCESS},
{0x0000000000000000, 0, 2, 0x0000000000000000, SUCCESS},
{0xffffffffffffffff, 0, 8, 0x00000000000000ff, SUCCESS},
{0xffffffff00000000,32,32, 0x00000000ffffffff, SUCCESS},
{0xfffffffffffffff0, 0, 8, 0x0000000000000000, FAIL},
{0xffffffffffffffff,32,32, 0x0000000000000000, FAIL},
//{0xffffffffffffffff,64, 1, 0x0000000000000000, ASSERT}, // Throw an assert
//{0xffffffffffffffff, 0,65, 0x0000000000000000, ASSERT}, // Throw an assert
//{0xffffffffffffffff,33,32, 0x0000000000000000, ASSERT}, // Throw an assert
};
#endif
int test()
{
glm::uint32 count = sizeof(Data64) / sizeof(typeU64);
for(glm::uint32 i = 0; i < count; ++i)
{
glm::uint64 Return = glm::extractField(
Data64[i].Value,
Data64[i].BitFirst,
Data64[i].BitCount);
bool Compare = Data64[i].Return == Return;
if(Data64[i].Result == SUCCESS && Compare)
continue;
else if(Data64[i].Result == FAIL && !Compare)
continue;
std::cout << "glm::extractfield test fail on test " << i << std::endl;
return 1;
}
return 0;
}
}//extractField
namespace bitRevert
{
template <typename genType>
struct type
{
genType Value;
genType Return;
result Result;
};
typedef type<glm::uint64> typeU64;
#if(((GLM_COMPILER & GLM_COMPILER_GCC) == GLM_COMPILER_GCC) && (GLM_COMPILER < GLM_COMPILER_GCC44))
typeU64 const Data64[] =
{
{0xffffffffffffffffLLU, 0xffffffffffffffffLLU, SUCCESS},
{0x0000000000000000LLU, 0x0000000000000000LLU, SUCCESS},
{0xf000000000000000LLU, 0x000000000000000fLLU, SUCCESS},
};
#else
typeU64 const Data64[] =
{
{0xffffffffffffffff, 0xffffffffffffffff, SUCCESS},
{0x0000000000000000, 0x0000000000000000, SUCCESS},
{0xf000000000000000, 0x000000000000000f, SUCCESS},
};
#endif
int test()
{
glm::uint32 count = sizeof(Data64) / sizeof(typeU64);
for(glm::uint32 i = 0; i < count; ++i)
{
glm::uint64 Return = glm::bitRevert(
Data64[i].Value);
bool Compare = Data64[i].Return == Return;
if(Data64[i].Result == SUCCESS && Compare)
continue;
else if(Data64[i].Result == FAIL && !Compare)
continue;
std::cout << "glm::extractfield test fail on test " << i << std::endl;
return 1;
}
return 0;
}
}//bitRevert
inline glm::uint64 fastBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1;
glm::uint64 REG2;
REG1 = x;
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = y;
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
inline glm::uint64 interleaveBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1;
glm::uint64 REG2;
REG1 = x;
REG2 = y;
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
inline glm::uint64 loopBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
static glm::uint64 const Mask[5] =
{
0x5555555555555555,
0x3333333333333333,
0x0F0F0F0F0F0F0F0F,
0x00FF00FF00FF00FF,
0x0000FFFF0000FFFF
};
glm::uint64 REG1 = x;
glm::uint64 REG2 = y;
for(int i = 4; i >= 0; --i)
{
REG1 = ((REG1 << (1 << i)) | REG1) & Mask[i];
REG2 = ((REG2 << (1 << i)) | REG2) & Mask[i];
}
return REG1 | (REG2 << 1);
}
/*
const int N = 1024;
int32_t b1[N]; // 2 x arrays of input bit sets
int32_t b2[N];
int32_t b3[N]; // 1 x array of output bit sets
for (int i = 0; i < N; i += 4)
{
__m128i v1 = _mm_loadu_si128(&b1[i]); // load input bits sets
__m128i v2 = _mm_loadu_si128(&b2[i]);
__m128i v3 = _mm_and_si128(v1, v2); // do the bitwise AND
_mm_storeu_si128(&b3[i], v3); // store the result
}
If you just want to AND an array in-place with a fixed mask then it would simplify to this:
const int N = 1024;
int32_t b1[N]; // input/output array of bit sets
const __m128i v2 = _mm_set1_epi32(0x12345678); // mask
for (int i = 0; i < N; i += 4)
{
__m128i v1 = _mm_loadu_si128(&b1[i]); // load input bits sets
__m128i v3 = _mm_and_si128(v1, v2); // do the bitwise AND
_mm_storeu_si128(&b1[i], v3); // store the result
}
Note: for better performance make sure your input/output arrays are 16 byte aligned and then use _mm_load_si128/_mm_store_si128 rather than their unaligned counterparts as above.
*/
inline glm::uint64 sseBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
GLM_ALIGN(16) glm::uint32 const Array[4] = {x, 0, y, 0};
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
Reg1 = _mm_load_si128((__m128i*)Array);
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
GLM_ALIGN(16) glm::uint64 Result[2];
_mm_store_si128((__m128i*)Result, Reg1);
return Result[0];
}
inline glm::uint64 sseUnalignedBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint32 const Array[4] = {x, 0, y, 0};
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
Reg1 = _mm_loadu_si128((__m128i*)Array);
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
glm::uint64 Result[2];
_mm_storeu_si128((__m128i*)Result, Reg1);
return Result[0];
}
inline __m128i _mm_bit_interleave_si128(__m128i x, __m128i y)
{
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
Reg1 = _mm_unpacklo_epi64(x, y);
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
return Reg1;
}
inline __m128i _mm_bit_interleave_si128(__m128i x)
{
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
//Reg1 = _mm_unpacklo_epi64(x, y);
Reg1 = x;
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
return Reg1;
}
namespace bitfieldInterleave
{
int test()
{
glm::uint32 x_max = 1 << 13;
glm::uint32 y_max = 1 << 12;
// ALU
std::vector<glm::uint64> Data(x_max * y_max);
std::vector<glm::u32vec2> Param(x_max * y_max);
for(glm::uint32 i = 0; i < Param.size(); ++i)
Param[i] = glm::u32vec2(i % x_max, i / y_max);
{
for(glm::uint32 y = 0; y < (1 << 10); ++y)
for(glm::uint32 x = 0; x < (1 << 10); ++x)
{
glm::uint64 A = glm::bitfieldInterleave(x, y);
glm::uint64 B = fastBitfieldInterleave(x, y);
glm::uint64 C = loopBitfieldInterleave(x, y);
glm::uint64 D = interleaveBitfieldInterleave(x, y);
glm::uint64 E = sseBitfieldInterleave(x, y);
glm::uint64 F = sseUnalignedBitfieldInterleave(x, y);
assert(A == B);
assert(A == C);
assert(A == D);
assert(A == E);
assert(A == F);
}
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = glm::bitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "glm::bitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = fastBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "fastBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = loopBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "loopBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = interleaveBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "interleaveBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = sseBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "sseBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = sseUnalignedBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "sseUnalignedBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
// SIMD
glm::int32 simd_x_max = 1 << 13;
glm::int32 simd_y_max = 1 << 12;
std::vector<__m128i> SimdData(x_max * y_max);
std::vector<__m128i> SimdParam(x_max * y_max);
for(int i = 0; i < SimdParam.size(); ++i)
SimdParam[i] = _mm_set_epi32(i % simd_x_max, 0, i / simd_y_max, 0);
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
SimdData[i] = _mm_bit_interleave_si128(SimdParam[i]);
std::clock_t Time = std::clock() - LastTime;
std::cout << "_mm_bit_interleave_si128 Time " << Time << " clocks" << std::endl;
}
return 0;
}
}
int main()
{
//__m64 REG3 = _mm_set1_pi32(static_cast<int>(0x80000000));
//__m64 REG1 = _mm_set1_pi32(0xFFFFFFFF);
//__m64 REG2 = _mm_set1_pi32(0x55555555);
//__m128i REG = _mm_set_epi64(REG1, REG2);
int Error = 0;
Error += ::bitfieldInterleave::test();
Error += ::extractField::test();
Error += ::bitRevert::test();
while(true);
return Error;
}