mirror of
https://github.com/g-truc/glm.git
synced 2024-11-30 03:44:38 +00:00
88ee302567
1. type_vec4.hpp
__declspec(align(16)) produces a compiler error on VS2012:
func_common.inl(634): error C2719: 'a': formal parameter with
__declspec(align('16')) won't be aligned
core_func_common.cpp(310) : see reference to function template
instantiation 'glm::detail::tvec4<T,P> glm::mix<float,highp>(const
glm::detail::tvec4<T,P> &,const glm::detail::tvec4<T,P>
&,glm::detail::tvec4<bool,highp>)' being compiled
with
[
T=float,
P=highp
]
and a warning on CygWin using gcc 4.7.2:
type_vec4.hpp:40:31: warning: 'align' attribute directive ignored
[-Wattributes]
2. gtx_bit.cpp
glm::uint32 x_max = 1 << 13;
glm::uint32 y_max = 1 << 12;
result out of memory on my machine.
604 lines
18 KiB
C++
604 lines
18 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Mathematics Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Created : 2010-09-16
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// Updated : 2010-09-16
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// Licence : This source is under MIT licence
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// File : test/gtx/bit.cpp
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#include <emmintrin.h>
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#include <glm/glm.hpp>
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#include <glm/gtc/type_precision.hpp>
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#include <glm/gtx/bit.hpp>
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#if(GLM_ARCH != GLM_ARCH_PURE)
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# include <glm/core/intrinsic_integer.hpp>
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#endif
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#include <iostream>
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#include <vector>
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#include <ctime>
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enum result
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{
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SUCCESS,
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FAIL,
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ASSERT,
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STATIC_ASSERT
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};
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namespace extractField
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{
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template <typename genType, typename sizeType>
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struct type
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{
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genType Value;
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sizeType BitFirst;
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sizeType BitCount;
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genType Return;
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result Result;
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};
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typedef type<glm::uint64, glm::uint> typeU64;
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#if(((GLM_COMPILER & GLM_COMPILER_GCC) == GLM_COMPILER_GCC) && (GLM_COMPILER < GLM_COMPILER_GCC44))
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typeU64 const Data64[] =
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{
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{0xffffffffffffffffLLU, 8, 0, 0x0000000000000000LLU, SUCCESS},
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{0x0000000000000000LLU, 0,64, 0x0000000000000000LLU, SUCCESS},
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{0xffffffffffffffffLLU, 0,64, 0xffffffffffffffffLLU, SUCCESS},
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{0x0f0f0f0f0f0f0f0fLLU, 0,64, 0x0f0f0f0f0f0f0f0fLLU, SUCCESS},
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{0x0000000000000000LLU, 8, 0, 0x0000000000000000LLU, SUCCESS},
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{0x8000000000000000LLU,63, 1, 0x0000000000000001LLU, SUCCESS},
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{0x7fffffffffffffffLLU,63, 1, 0x0000000000000000LLU, SUCCESS},
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{0x0000000000000300LLU, 8, 8, 0x0000000000000003LLU, SUCCESS},
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{0x000000000000ff00LLU, 8, 8, 0x00000000000000ffLLU, SUCCESS},
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{0xfffffffffffffff0LLU, 0, 5, 0x0000000000000010LLU, SUCCESS},
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{0x00000000000000ffLLU, 1, 3, 0x0000000000000007LLU, SUCCESS},
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{0x00000000000000ffLLU, 0, 3, 0x0000000000000007LLU, SUCCESS},
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{0x0000000000000000LLU, 0, 2, 0x0000000000000000LLU, SUCCESS},
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{0xffffffffffffffffLLU, 0, 8, 0x00000000000000ffLLU, SUCCESS},
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{0xffffffff00000000LLU,32,32, 0x00000000ffffffffLLU, SUCCESS},
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{0xfffffffffffffff0LLU, 0, 8, 0x0000000000000000LLU, FAIL},
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{0xffffffffffffffffLLU,32,32, 0x0000000000000000LLU, FAIL},
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//{0xffffffffffffffffLLU,64, 1, 0x0000000000000000LLU, ASSERT}, // Throw an assert
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//{0xffffffffffffffffLLU, 0,65, 0x0000000000000000LLU, ASSERT}, // Throw an assert
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//{0xffffffffffffffffLLU,33,32, 0x0000000000000000LLU, ASSERT}, // Throw an assert
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};
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#else
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typeU64 const Data64[] =
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{
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{0xffffffffffffffff, 8, 0, 0x0000000000000000, SUCCESS},
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{0x0000000000000000, 0,64, 0x0000000000000000, SUCCESS},
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{0xffffffffffffffff, 0,64, 0xffffffffffffffff, SUCCESS},
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{0x0f0f0f0f0f0f0f0f, 0,64, 0x0f0f0f0f0f0f0f0f, SUCCESS},
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{0x0000000000000000, 8, 0, 0x0000000000000000, SUCCESS},
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{0x8000000000000000,63, 1, 0x0000000000000001, SUCCESS},
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{0x7fffffffffffffff,63, 1, 0x0000000000000000, SUCCESS},
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{0x0000000000000300, 8, 8, 0x0000000000000003, SUCCESS},
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{0x000000000000ff00, 8, 8, 0x00000000000000ff, SUCCESS},
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{0xfffffffffffffff0, 0, 5, 0x0000000000000010, SUCCESS},
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{0x00000000000000ff, 1, 3, 0x0000000000000007, SUCCESS},
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{0x00000000000000ff, 0, 3, 0x0000000000000007, SUCCESS},
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{0x0000000000000000, 0, 2, 0x0000000000000000, SUCCESS},
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{0xffffffffffffffff, 0, 8, 0x00000000000000ff, SUCCESS},
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{0xffffffff00000000,32,32, 0x00000000ffffffff, SUCCESS},
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{0xfffffffffffffff0, 0, 8, 0x0000000000000000, FAIL},
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{0xffffffffffffffff,32,32, 0x0000000000000000, FAIL},
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//{0xffffffffffffffff,64, 1, 0x0000000000000000, ASSERT}, // Throw an assert
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//{0xffffffffffffffff, 0,65, 0x0000000000000000, ASSERT}, // Throw an assert
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//{0xffffffffffffffff,33,32, 0x0000000000000000, ASSERT}, // Throw an assert
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};
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#endif
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int test()
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{
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glm::uint32 count = sizeof(Data64) / sizeof(typeU64);
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for(glm::uint32 i = 0; i < count; ++i)
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{
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glm::uint64 Return = glm::extractField(
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Data64[i].Value,
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Data64[i].BitFirst,
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Data64[i].BitCount);
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bool Compare = Data64[i].Return == Return;
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if(Data64[i].Result == SUCCESS && Compare)
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continue;
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else if(Data64[i].Result == FAIL && !Compare)
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continue;
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std::cout << "glm::extractfield test fail on test " << i << std::endl;
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return 1;
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}
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return 0;
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}
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}//extractField
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namespace bitRevert
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{
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template <typename genType>
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struct type
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{
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genType Value;
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genType Return;
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result Result;
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};
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typedef type<glm::uint64> typeU64;
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#if(((GLM_COMPILER & GLM_COMPILER_GCC) == GLM_COMPILER_GCC) && (GLM_COMPILER < GLM_COMPILER_GCC44))
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typeU64 const Data64[] =
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{
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{0xffffffffffffffffLLU, 0xffffffffffffffffLLU, SUCCESS},
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{0x0000000000000000LLU, 0x0000000000000000LLU, SUCCESS},
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{0xf000000000000000LLU, 0x000000000000000fLLU, SUCCESS},
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};
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#else
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typeU64 const Data64[] =
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{
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{0xffffffffffffffff, 0xffffffffffffffff, SUCCESS},
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{0x0000000000000000, 0x0000000000000000, SUCCESS},
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{0xf000000000000000, 0x000000000000000f, SUCCESS},
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};
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#endif
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int test()
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{
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glm::uint32 count = sizeof(Data64) / sizeof(typeU64);
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for(glm::uint32 i = 0; i < count; ++i)
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{
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glm::uint64 Return = glm::bitRevert(
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Data64[i].Value);
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bool Compare = Data64[i].Return == Return;
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if(Data64[i].Result == SUCCESS && Compare)
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continue;
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else if(Data64[i].Result == FAIL && !Compare)
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continue;
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std::cout << "glm::extractfield test fail on test " << i << std::endl;
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return 1;
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}
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return 0;
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}
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}//bitRevert
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namespace bitfieldInterleave
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{
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inline glm::uint64 fastBitfieldInterleave(glm::uint32 x, glm::uint32 y)
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{
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glm::uint64 REG1;
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glm::uint64 REG2;
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REG1 = x;
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REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
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REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
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REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
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REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
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REG2 = y;
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REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
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REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
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REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
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REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
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return REG1 | (REG2 << 1);
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}
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inline glm::uint64 interleaveBitfieldInterleave(glm::uint32 x, glm::uint32 y)
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{
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glm::uint64 REG1;
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glm::uint64 REG2;
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REG1 = x;
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REG2 = y;
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REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
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REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
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REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
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REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
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REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
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REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
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REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
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REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
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return REG1 | (REG2 << 1);
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}
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inline glm::uint64 loopBitfieldInterleave(glm::uint32 x, glm::uint32 y)
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{
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static glm::uint64 const Mask[5] =
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{
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0x5555555555555555,
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0x3333333333333333,
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0x0F0F0F0F0F0F0F0F,
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0x00FF00FF00FF00FF,
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0x0000FFFF0000FFFF
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};
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glm::uint64 REG1 = x;
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glm::uint64 REG2 = y;
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for(int i = 4; i >= 0; --i)
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{
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REG1 = ((REG1 << (1 << i)) | REG1) & Mask[i];
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REG2 = ((REG2 << (1 << i)) | REG2) & Mask[i];
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}
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return REG1 | (REG2 << 1);
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}
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inline glm::uint64 sseBitfieldInterleave(glm::uint32 x, glm::uint32 y)
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{
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GLM_ALIGN(16) glm::uint32 const Array[4] = {x, 0, y, 0};
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__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
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__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
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__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
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__m128i const Mask1 = _mm_set1_epi32(0x33333333);
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__m128i const Mask0 = _mm_set1_epi32(0x55555555);
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__m128i Reg1;
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__m128i Reg2;
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// REG1 = x;
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// REG2 = y;
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Reg1 = _mm_load_si128((__m128i*)Array);
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//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
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//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
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Reg2 = _mm_slli_si128(Reg1, 2);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask4);
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//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
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//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
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Reg2 = _mm_slli_si128(Reg1, 1);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask3);
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//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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Reg2 = _mm_slli_epi32(Reg1, 4);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask2);
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//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
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//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
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Reg2 = _mm_slli_epi32(Reg1, 2);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask1);
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//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
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//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
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Reg2 = _mm_slli_epi32(Reg1, 1);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask0);
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//return REG1 | (REG2 << 1);
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Reg2 = _mm_slli_epi32(Reg1, 1);
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Reg2 = _mm_srli_si128(Reg2, 8);
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Reg1 = _mm_or_si128(Reg1, Reg2);
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GLM_ALIGN(16) glm::uint64 Result[2];
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_mm_store_si128((__m128i*)Result, Reg1);
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return Result[0];
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}
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inline glm::uint64 sseUnalignedBitfieldInterleave(glm::uint32 x, glm::uint32 y)
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{
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glm::uint32 const Array[4] = {x, 0, y, 0};
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__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
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__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
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__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
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__m128i const Mask1 = _mm_set1_epi32(0x33333333);
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__m128i const Mask0 = _mm_set1_epi32(0x55555555);
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__m128i Reg1;
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__m128i Reg2;
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// REG1 = x;
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// REG2 = y;
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Reg1 = _mm_loadu_si128((__m128i*)Array);
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//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
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//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
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Reg2 = _mm_slli_si128(Reg1, 2);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask4);
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//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
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//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
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Reg2 = _mm_slli_si128(Reg1, 1);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask3);
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//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
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Reg2 = _mm_slli_epi32(Reg1, 4);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask2);
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//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
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//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
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Reg2 = _mm_slli_epi32(Reg1, 2);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask1);
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//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
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//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
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Reg2 = _mm_slli_epi32(Reg1, 1);
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Reg1 = _mm_or_si128(Reg2, Reg1);
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Reg1 = _mm_and_si128(Reg1, Mask0);
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//return REG1 | (REG2 << 1);
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Reg2 = _mm_slli_epi32(Reg1, 1);
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Reg2 = _mm_srli_si128(Reg2, 8);
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Reg1 = _mm_or_si128(Reg1, Reg2);
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glm::uint64 Result[2];
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_mm_storeu_si128((__m128i*)Result, Reg1);
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return Result[0];
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}
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int test()
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{
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glm::uint32 x_max = 1 << 11;
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glm::uint32 y_max = 1 << 10;
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// ALU
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std::vector<glm::uint64> Data(x_max * y_max);
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std::vector<glm::u32vec2> Param(x_max * y_max);
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for(glm::uint32 i = 0; i < Param.size(); ++i)
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Param[i] = glm::u32vec2(i % x_max, i / y_max);
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{
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for(glm::uint32 y = 0; y < (1 << 10); ++y)
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for(glm::uint32 x = 0; x < (1 << 10); ++x)
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{
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glm::uint64 A = glm::bitfieldInterleave(x, y);
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glm::uint64 B = fastBitfieldInterleave(x, y);
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glm::uint64 C = loopBitfieldInterleave(x, y);
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glm::uint64 D = interleaveBitfieldInterleave(x, y);
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glm::uint64 E = sseBitfieldInterleave(x, y);
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glm::uint64 F = sseUnalignedBitfieldInterleave(x, y);
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assert(A == B);
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assert(A == C);
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assert(A == D);
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assert(A == E);
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assert(A == F);
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# if(GLM_ARCH != GLM_ARCH_PURE)
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__m128i G = glm::detail::_mm_bit_interleave_si128(_mm_set_epi32(0, y, 0, x));
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glm::uint64 Result[2];
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_mm_storeu_si128((__m128i*)Result, G);
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assert(A == Result[0]);
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# endif//(GLM_ARCH != GLM_ARCH_PURE)
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}
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}
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{
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for(glm::uint8 y = 0; y < 127; ++y)
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for(glm::uint8 x = 0; x < 127; ++x)
|
|
{
|
|
glm::uint64 A(glm::bitfieldInterleave(glm::uint8(x), glm::uint8(y)));
|
|
glm::uint64 B(glm::bitfieldInterleave(glm::uint16(x), glm::uint16(y)));
|
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glm::uint64 C(glm::bitfieldInterleave(glm::uint32(x), glm::uint32(y)));
|
|
|
|
glm::int64 D(glm::bitfieldInterleave(glm::int8(x), glm::int8(y)));
|
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glm::int64 E(glm::bitfieldInterleave(glm::int16(x), glm::int16(y)));
|
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glm::int64 F(glm::bitfieldInterleave(glm::int32(x), glm::int32(y)));
|
|
|
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assert(D == E);
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assert(D == F);
|
|
}
|
|
}
|
|
|
|
{
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std::clock_t LastTime = std::clock();
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|
|
|
for(std::size_t i = 0; i < Data.size(); ++i)
|
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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;
|
|
}
|
|
|
|
{
|
|
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, Param[i].x);
|
|
|
|
std::clock_t Time = std::clock() - LastTime;
|
|
|
|
std::cout << "glm::detail::bitfieldInterleave Time " << Time << " clocks" << std::endl;
|
|
}
|
|
|
|
# if(GLM_ARCH != GLM_ARCH_PURE)
|
|
{
|
|
// SIMD
|
|
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 % x_max, 0, i / y_max, 0);
|
|
|
|
std::clock_t LastTime = std::clock();
|
|
|
|
for(std::size_t i = 0; i < SimdData.size(); ++i)
|
|
SimdData[i] = glm::detail::_mm_bit_interleave_si128(SimdParam[i]);
|
|
|
|
std::clock_t Time = std::clock() - LastTime;
|
|
|
|
std::cout << "_mm_bit_interleave_si128 Time " << Time << " clocks" << std::endl;
|
|
}
|
|
# endif//(GLM_ARCH != GLM_ARCH_PURE)
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
namespace bitfieldInterleave3
|
|
{
|
|
template <typename PARAM, typename RET>
|
|
inline RET refBitfieldInterleave(PARAM x, PARAM y, PARAM z)
|
|
{
|
|
RET Result = 0;
|
|
for(RET i = 0; i < sizeof(PARAM) * 8; ++i)
|
|
{
|
|
Result |= ((RET(x) & (RET(1U) << i)) << ((i << 1) + 0));
|
|
Result |= ((RET(y) & (RET(1U) << i)) << ((i << 1) + 1));
|
|
Result |= ((RET(z) & (RET(1U) << i)) << ((i << 1) + 2));
|
|
}
|
|
return Result;
|
|
}
|
|
|
|
int test()
|
|
{
|
|
int Error(0);
|
|
|
|
glm::uint16 x_max = 1 << 11;
|
|
glm::uint16 y_max = 1 << 11;
|
|
glm::uint16 z_max = 1 << 11;
|
|
|
|
for(glm::uint16 z = 0; z < z_max; z += 27)
|
|
for(glm::uint16 y = 0; y < y_max; y += 27)
|
|
for(glm::uint16 x = 0; x < x_max; x += 27)
|
|
{
|
|
glm::uint64 ResultA = refBitfieldInterleave<glm::uint16, glm::uint64>(x, y, z);
|
|
glm::uint64 ResultB = glm::bitfieldInterleave(x, y, z);
|
|
Error += ResultA == ResultB ? 0 : 1;
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
}
|
|
|
|
namespace bitfieldInterleave4
|
|
{
|
|
template <typename PARAM, typename RET>
|
|
inline RET loopBitfieldInterleave(PARAM x, PARAM y, PARAM z, PARAM w)
|
|
{
|
|
RET const v[4] = {x, y, z, w};
|
|
RET Result = 0;
|
|
for(RET i = 0; i < sizeof(PARAM) * 8; i++)
|
|
{
|
|
Result |= ((((v[0] >> i) & 1U)) << ((i << 2) + 0));
|
|
Result |= ((((v[1] >> i) & 1U)) << ((i << 2) + 1));
|
|
Result |= ((((v[2] >> i) & 1U)) << ((i << 2) + 2));
|
|
Result |= ((((v[3] >> i) & 1U)) << ((i << 2) + 3));
|
|
}
|
|
return Result;
|
|
}
|
|
|
|
int test()
|
|
{
|
|
int Error(0);
|
|
|
|
glm::uint16 x_max = 1 << 11;
|
|
glm::uint16 y_max = 1 << 11;
|
|
glm::uint16 z_max = 1 << 11;
|
|
glm::uint16 w_max = 1 << 11;
|
|
|
|
for(glm::uint16 w = 0; w < w_max; w += 27)
|
|
for(glm::uint16 z = 0; z < z_max; z += 27)
|
|
for(glm::uint16 y = 0; y < y_max; y += 27)
|
|
for(glm::uint16 x = 0; x < x_max; x += 27)
|
|
{
|
|
glm::uint64 ResultA = loopBitfieldInterleave<glm::uint16, glm::uint64>(x, y, z, w);
|
|
glm::uint64 ResultB = glm::bitfieldInterleave(x, y, z, w);
|
|
Error += ResultA == ResultB ? 0 : 1;
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
int Error(0);
|
|
|
|
Error += ::bitfieldInterleave3::test();
|
|
Error += ::bitfieldInterleave4::test();
|
|
Error += ::bitfieldInterleave::test();
|
|
Error += ::extractField::test();
|
|
Error += ::bitRevert::test();
|
|
|
|
return Error;
|
|
}
|