mirror of
https://github.com/g-truc/glm.git
synced 2024-11-10 12:41:54 +00:00
264 lines
6.6 KiB
C++
264 lines
6.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
/// OpenGL Mathematics (glm.g-truc.net)
|
|
///
|
|
/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
|
|
/// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
/// of this software and associated documentation files (the "Software"), to deal
|
|
/// in the Software without restriction, including without limitation the rights
|
|
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
/// copies of the Software, and to permit persons to whom the Software is
|
|
/// furnished to do so, subject to the following conditions:
|
|
///
|
|
/// The above copyright notice and this permission notice shall be included in
|
|
/// all copies or substantial portions of the Software.
|
|
///
|
|
/// Restrictions:
|
|
/// By making use of the Software for military purposes, you choose to make
|
|
/// a Bunny unhappy.
|
|
///
|
|
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
/// THE SOFTWARE.
|
|
///
|
|
/// @file test/gtc/gtc_integer.cpp
|
|
/// @date 2014-11-17 / 2014-11-25
|
|
/// @author Christophe Riccio
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#define GLM_FORCE_INLINE
|
|
#include <glm/gtc/epsilon.hpp>
|
|
#include <glm/gtc/integer.hpp>
|
|
#include <glm/gtc/type_precision.hpp>
|
|
#include <glm/gtc/vec1.hpp>
|
|
#include <glm/gtx/type_aligned.hpp>
|
|
#include <glm/vector_relational.hpp>
|
|
#include <glm/vec2.hpp>
|
|
#include <glm/vec3.hpp>
|
|
#include <glm/vec4.hpp>
|
|
#include <ctime>
|
|
#include <cstdio>
|
|
#include <vector>
|
|
#include <cmath>
|
|
|
|
namespace log2_
|
|
{
|
|
int test()
|
|
{
|
|
int Error = 0;
|
|
|
|
int A0 = static_cast<int>(glm::log2(16.f));
|
|
glm::ivec1 B0(glm::log2(glm::vec1(16.f)));
|
|
glm::ivec2 C0(glm::log2(glm::vec2(16.f)));
|
|
glm::ivec3 D0(glm::log2(glm::vec3(16.f)));
|
|
glm::ivec4 E0(glm::log2(glm::vec4(16.f)));
|
|
|
|
int A1 = glm::log2(int(16));
|
|
glm::ivec1 B1 = glm::log2(glm::ivec1(16));
|
|
glm::ivec2 C1 = glm::log2(glm::ivec2(16));
|
|
glm::ivec3 D1 = glm::log2(glm::ivec3(16));
|
|
glm::ivec4 E1 = glm::log2(glm::ivec4(16));
|
|
|
|
Error += A0 == A1 ? 0 : 1;
|
|
Error += glm::all(glm::equal(B0, B1)) ? 0 : 1;
|
|
Error += glm::all(glm::equal(C0, C1)) ? 0 : 1;
|
|
Error += glm::all(glm::equal(D0, D1)) ? 0 : 1;
|
|
Error += glm::all(glm::equal(E0, E1)) ? 0 : 1;
|
|
|
|
glm::uint64 A2 = glm::log2(glm::uint64(16));
|
|
glm::u64vec1 B2 = glm::log2(glm::u64vec1(16));
|
|
glm::u64vec2 C2 = glm::log2(glm::u64vec2(16));
|
|
glm::u64vec3 D2 = glm::log2(glm::u64vec3(16));
|
|
glm::u64vec4 E2 = glm::log2(glm::u64vec4(16));
|
|
|
|
Error += A2 == glm::uint64(4) ? 0 : 1;
|
|
Error += glm::all(glm::equal(B2, glm::u64vec1(4))) ? 0 : 1;
|
|
Error += glm::all(glm::equal(C2, glm::u64vec2(4))) ? 0 : 1;
|
|
Error += glm::all(glm::equal(D2, glm::u64vec3(4))) ? 0 : 1;
|
|
Error += glm::all(glm::equal(E2, glm::u64vec4(4))) ? 0 : 1;
|
|
|
|
return Error;
|
|
}
|
|
|
|
int perf(std::size_t Count)
|
|
{
|
|
int Error = 0;
|
|
|
|
{
|
|
std::vector<int> Result;
|
|
Result.resize(Count);
|
|
|
|
std::clock_t Begin = clock();
|
|
|
|
for(int i = 0; i < static_cast<int>(Count); ++i)
|
|
Result[i] = glm::log2(static_cast<int>(i));
|
|
|
|
std::clock_t End = clock();
|
|
|
|
printf("glm::log2<int>: %ld clocks\n", End - Begin);
|
|
}
|
|
|
|
{
|
|
std::vector<glm::ivec4> Result;
|
|
Result.resize(Count);
|
|
|
|
std::clock_t Begin = clock();
|
|
|
|
for(int i = 0; i < static_cast<int>(Count); ++i)
|
|
Result[i] = glm::log2(glm::ivec4(i));
|
|
|
|
std::clock_t End = clock();
|
|
|
|
printf("glm::log2<ivec4>: %ld clocks\n", End - Begin);
|
|
}
|
|
|
|
# if GLM_HAS_BITSCAN_WINDOWS
|
|
{
|
|
std::vector<glm::ivec4> Result;
|
|
Result.resize(Count);
|
|
|
|
std::clock_t Begin = clock();
|
|
|
|
for(std::size_t i = 0; i < Count; ++i)
|
|
{
|
|
glm::tvec4<unsigned long, glm::defaultp> Tmp(glm::uninitialize);
|
|
_BitScanReverse(&Tmp.x, i);
|
|
_BitScanReverse(&Tmp.y, i);
|
|
_BitScanReverse(&Tmp.z, i);
|
|
_BitScanReverse(&Tmp.w, i);
|
|
Result[i] = glm::ivec4(Tmp);
|
|
}
|
|
|
|
std::clock_t End = clock();
|
|
|
|
printf("glm::log2<ivec4> inlined: %ld clocks\n", End - Begin);
|
|
}
|
|
|
|
|
|
{
|
|
std::vector<glm::tvec4<unsigned long, glm::defaultp> > Result;
|
|
Result.resize(Count);
|
|
|
|
std::clock_t Begin = clock();
|
|
|
|
for(std::size_t i = 0; i < Count; ++i)
|
|
{
|
|
_BitScanReverse(&Result[i].x, i);
|
|
_BitScanReverse(&Result[i].y, i);
|
|
_BitScanReverse(&Result[i].z, i);
|
|
_BitScanReverse(&Result[i].w, i);
|
|
}
|
|
|
|
std::clock_t End = clock();
|
|
|
|
printf("glm::log2<ivec4> inlined no cast: %ld clocks\n", End - Begin);
|
|
}
|
|
|
|
|
|
{
|
|
std::vector<glm::ivec4> Result;
|
|
Result.resize(Count);
|
|
|
|
std::clock_t Begin = clock();
|
|
|
|
for(std::size_t i = 0; i < Count; ++i)
|
|
{
|
|
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result[i].x), i);
|
|
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result[i].y), i);
|
|
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result[i].z), i);
|
|
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result[i].w), i);
|
|
}
|
|
|
|
std::clock_t End = clock();
|
|
|
|
printf("glm::log2<ivec4> reinterpret: %ld clocks\n", End - Begin);
|
|
}
|
|
# endif//GLM_HAS_BITSCAN_WINDOWS
|
|
|
|
{
|
|
std::vector<float> Result;
|
|
Result.resize(Count);
|
|
|
|
std::clock_t Begin = clock();
|
|
|
|
for(std::size_t i = 0; i < Count; ++i)
|
|
Result[i] = glm::log2(static_cast<float>(i));
|
|
|
|
std::clock_t End = clock();
|
|
|
|
printf("glm::log2<float>: %ld clocks\n", End - Begin);
|
|
}
|
|
|
|
{
|
|
std::vector<glm::vec4> Result;
|
|
Result.resize(Count);
|
|
|
|
std::clock_t Begin = clock();
|
|
|
|
for(int i = 0; i < static_cast<int>(Count); ++i)
|
|
Result[i] = glm::log2(glm::vec4(i));
|
|
|
|
std::clock_t End = clock();
|
|
|
|
printf("glm::log2<vec4>: %ld clocks\n", End - Begin);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
}//namespace log2_
|
|
|
|
namespace iround
|
|
{
|
|
int test()
|
|
{
|
|
int Error = 0;
|
|
|
|
for(float f = 0.0f; f < 3.1f; f += 0.05f)
|
|
{
|
|
int RoundFast = glm::iround(f);
|
|
int RoundSTD = glm::round(f);
|
|
Error += RoundFast == RoundSTD ? 0 : 1;
|
|
assert(!Error);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
}//namespace iround
|
|
|
|
namespace uround
|
|
{
|
|
int test()
|
|
{
|
|
int Error = 0;
|
|
|
|
for(float f = 0.0f; f < 3.1f; f += 0.05f)
|
|
{
|
|
int RoundFast = glm::uround(f);
|
|
int RoundSTD = glm::round(f);
|
|
Error += RoundFast == RoundSTD ? 0 : 1;
|
|
assert(!Error);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
}//namespace uround
|
|
|
|
int main()
|
|
{
|
|
int Error(0);
|
|
|
|
Error += ::log2_::test();
|
|
Error += ::iround::test();
|
|
Error += ::uround::test();
|
|
|
|
# ifdef NDEBUG
|
|
std::size_t const Samples(1000);
|
|
Error += ::log2_::perf(Samples);
|
|
# endif//NDEBUG
|
|
|
|
return Error;
|
|
}
|