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607 lines
14 KiB
C++
607 lines
14 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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/// OpenGL Mathematics (glm.g-truc.net)
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///
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/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
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/// Permission is hereby granted, free of charge, to any person obtaining a copy
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/// of this software and associated documentation files (the "Software"), to deal
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/// in the Software without restriction, including without limitation the rights
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/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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/// copies of the Software, and to permit persons to whom the Software is
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/// furnished to do so, subject to the following conditions:
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///
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/// The above copyright notice and this permission notice shall be included in
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/// all copies or substantial portions of the Software.
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///
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/// Restrictions:
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/// By making use of the Software for military purposes, you choose to make
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/// a Bunny unhappy.
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///
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/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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/// THE SOFTWARE.
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///
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/// @file test/gtc/gtc_packing.cpp
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/// @date 2013-08-09 / 2014-11-25
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/// @author Christophe Riccio
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///////////////////////////////////////////////////////////////////////////////////
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#include <glm/gtc/packing.hpp>
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#include <glm/gtc/epsilon.hpp>
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#include <cstdio>
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#include <vector>
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void print_bits(float const & s)
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{
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union
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{
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float f;
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unsigned int i;
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} uif;
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uif.f = s;
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printf("f32: ");
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for(std::size_t j = sizeof(s) * 8; j > 0; --j)
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{
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if(j == 23 || j == 31)
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printf(" ");
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printf("%d", (uif.i & (1 << (j - 1))) ? 1 : 0);
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}
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}
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void print_10bits(glm::uint const & s)
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{
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printf("10b: ");
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for(std::size_t j = 10; j > 0; --j)
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{
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if(j == 5)
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printf(" ");
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printf("%d", (s & (1 << (j - 1))) ? 1 : 0);
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}
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}
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void print_11bits(glm::uint const & s)
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{
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printf("11b: ");
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for(std::size_t j = 11; j > 0; --j)
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{
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if(j == 6)
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printf(" ");
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printf("%d", (s & (1 << (j - 1))) ? 1 : 0);
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}
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}
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void print_value(float const & s)
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{
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printf("%2.5f, ", s);
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print_bits(s);
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printf(", ");
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// print_11bits(detail::floatTo11bit(s));
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// printf(", ");
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// print_10bits(detail::floatTo10bit(s));
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printf("\n");
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}
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int test_Half1x16()
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{
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int Error = 0;
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std::vector<float> Tests;
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Tests.push_back(0.0f);
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Tests.push_back(1.0f);
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Tests.push_back(-1.0f);
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Tests.push_back(2.0f);
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Tests.push_back(-2.0f);
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Tests.push_back(1.9f);
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for(std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint32 p0 = glm::packHalf1x16(Tests[i]);
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float v0 = glm::unpackHalf1x16(p0);
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glm::uint32 p1 = glm::packHalf1x16(v0);
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float v1 = glm::unpackHalf1x16(p1);
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Error += (v0 == v1) ? 0 : 1;
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}
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return Error;
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}
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int test_Half4x16()
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{
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int Error = 0;
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std::vector<glm::vec4> Tests;
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Tests.push_back(glm::vec4(1.0f));
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Tests.push_back(glm::vec4(0.0f));
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Tests.push_back(glm::vec4(2.0f));
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Tests.push_back(glm::vec4(0.1f));
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Tests.push_back(glm::vec4(0.5f));
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Tests.push_back(glm::vec4(-0.9f));
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for(std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint64 p0 = glm::packHalf4x16(Tests[i]);
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glm::vec4 v0 = glm::unpackHalf4x16(p0);
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glm::uint64 p1 = glm::packHalf4x16(v0);
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glm::vec4 v1 = glm::unpackHalf4x16(p1);
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glm::u16vec4 p2 = glm::packHalf(v0);
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glm::vec4 v2 = glm::unpackHalf(p2);
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Error += glm::all(glm::equal(v0, v1)) ? 0 : 1;
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Error += glm::all(glm::equal(v0, v2)) ? 0 : 1;
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}
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return Error;
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}
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int test_I3x10_1x2()
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{
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int Error = 0;
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std::vector<glm::ivec4> Tests;
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Tests.push_back(glm::ivec4(0));
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Tests.push_back(glm::ivec4(1));
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Tests.push_back(glm::ivec4(-1));
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Tests.push_back(glm::ivec4(2));
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Tests.push_back(glm::ivec4(-2));
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Tests.push_back(glm::ivec4(3));
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for(std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint32 p0 = glm::packI3x10_1x2(Tests[i]);
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glm::ivec4 v0 = glm::unpackI3x10_1x2(p0);
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glm::uint32 p1 = glm::packI3x10_1x2(v0);
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glm::ivec4 v1 = glm::unpackI3x10_1x2(p1);
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Error += glm::all(glm::equal(v0, v1)) ? 0 : 1;
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}
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return Error;
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}
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int test_U3x10_1x2()
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{
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int Error = 0;
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std::vector<glm::uvec4> Tests;
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Tests.push_back(glm::uvec4(0));
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Tests.push_back(glm::uvec4(1));
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Tests.push_back(glm::uvec4(2));
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Tests.push_back(glm::uvec4(3));
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Tests.push_back(glm::uvec4(4));
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Tests.push_back(glm::uvec4(5));
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for(std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint32 p0 = glm::packU3x10_1x2(Tests[i]);
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glm::uvec4 v0 = glm::unpackU3x10_1x2(p0);
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glm::uint32 p1 = glm::packU3x10_1x2(v0);
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glm::uvec4 v1 = glm::unpackU3x10_1x2(p1);
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Error += glm::all(glm::equal(v0, v1)) ? 0 : 1;
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}
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return Error;
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}
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int test_Snorm3x10_1x2()
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{
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int Error = 0;
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std::vector<glm::vec4> Tests;
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Tests.push_back(glm::vec4(1.0f));
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Tests.push_back(glm::vec4(0.0f));
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Tests.push_back(glm::vec4(2.0f));
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Tests.push_back(glm::vec4(0.1f));
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Tests.push_back(glm::vec4(0.5f));
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Tests.push_back(glm::vec4(0.9f));
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for(std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint32 p0 = glm::packSnorm3x10_1x2(Tests[i]);
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glm::vec4 v0 = glm::unpackSnorm3x10_1x2(p0);
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glm::uint32 p1 = glm::packSnorm3x10_1x2(v0);
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glm::vec4 v1 = glm::unpackSnorm3x10_1x2(p1);
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Error += glm::all(glm::equal(v0, v1)) ? 0 : 1;
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}
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return Error;
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}
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int test_Unorm3x10_1x2()
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{
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int Error = 0;
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std::vector<glm::vec4> Tests;
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Tests.push_back(glm::vec4(1.0f));
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Tests.push_back(glm::vec4(0.0f));
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Tests.push_back(glm::vec4(2.0f));
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Tests.push_back(glm::vec4(0.1f));
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Tests.push_back(glm::vec4(0.5f));
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Tests.push_back(glm::vec4(0.9f));
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for(std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint32 p0 = glm::packUnorm3x10_1x2(Tests[i]);
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glm::vec4 v0 = glm::unpackUnorm3x10_1x2(p0);
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glm::uint32 p1 = glm::packUnorm3x10_1x2(v0);
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glm::vec4 v1 = glm::unpackUnorm3x10_1x2(p1);
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Error += glm::all(glm::equal(v0, v1)) ? 0 : 1;
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}
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return Error;
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}
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int test_F2x11_1x10()
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{
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int Error = 0;
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std::vector<glm::vec3> Tests;
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Tests.push_back(glm::vec3(1.0f));
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Tests.push_back(glm::vec3(0.0f));
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Tests.push_back(glm::vec3(2.0f));
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Tests.push_back(glm::vec3(0.1f));
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Tests.push_back(glm::vec3(0.5f));
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Tests.push_back(glm::vec3(0.9f));
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for(std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint32 p0 = glm::packF2x11_1x10(Tests[i]);
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glm::vec3 v0 = glm::unpackF2x11_1x10(p0);
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glm::uint32 p1 = glm::packF2x11_1x10(v0);
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glm::vec3 v1 = glm::unpackF2x11_1x10(p1);
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Error += glm::all(glm::equal(v0, v1)) ? 0 : 1;
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}
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return Error;
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}
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int test_F3x9_E1x5()
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{
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int Error = 0;
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std::vector<glm::vec3> Tests;
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Tests.push_back(glm::vec3(1.0f));
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Tests.push_back(glm::vec3(0.0f));
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Tests.push_back(glm::vec3(2.0f));
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Tests.push_back(glm::vec3(0.1f));
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Tests.push_back(glm::vec3(0.5f));
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Tests.push_back(glm::vec3(0.9f));
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for (std::size_t i = 0; i < Tests.size(); ++i)
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{
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glm::uint32 p0 = glm::packF3x9_E1x5(Tests[i]);
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glm::vec3 v0 = glm::unpackF3x9_E1x5(p0);
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glm::uint32 p1 = glm::packF3x9_E1x5(v0);
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glm::vec3 v1 = glm::unpackF3x9_E1x5(p1);
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Error += glm::all(glm::epsilonEqual(v0, v1, 0.01f)) ? 0 : 1;
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}
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return Error;
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}
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int test_packUnorm1x16()
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{
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int Error = 0;
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std::vector<glm::vec1> A;
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A.push_back(glm::vec1(1.0f));
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A.push_back(glm::vec1(0.5f));
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A.push_back(glm::vec1(0.1f));
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A.push_back(glm::vec1(0.0f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec1 B(A[i]);
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glm::uint32 C = glm::packUnorm1x16(B.x);
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glm::vec1 D(glm::unpackUnorm1x16(C));
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 65535.f)) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_packSnorm1x16()
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{
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int Error = 0;
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std::vector<glm::vec1> A;
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A.push_back(glm::vec1( 1.0f));
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A.push_back(glm::vec1( 0.0f));
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A.push_back(glm::vec1(-0.5f));
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A.push_back(glm::vec1(-0.1f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec1 B(A[i]);
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glm::uint32 C = glm::packSnorm1x16(B.x);
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glm::vec1 D(glm::unpackSnorm1x16(C));
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 32767.0f * 2.0f)) ? 0 : 1;
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}
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return Error;
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}
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int test_packUnorm2x16()
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{
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int Error = 0;
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std::vector<glm::vec2> A;
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A.push_back(glm::vec2(1.0f, 0.0f));
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A.push_back(glm::vec2(0.5f, 0.7f));
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A.push_back(glm::vec2(0.1f, 0.2f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec2 B(A[i]);
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glm::uint32 C = glm::packUnorm2x16(B);
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glm::vec2 D = glm::unpackUnorm2x16(C);
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 65535.f)) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_packSnorm2x16()
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{
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int Error = 0;
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std::vector<glm::vec2> A;
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A.push_back(glm::vec2( 1.0f, 0.0f));
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A.push_back(glm::vec2(-0.5f,-0.7f));
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A.push_back(glm::vec2(-0.1f, 0.1f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec2 B(A[i]);
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glm::uint32 C = glm::packSnorm2x16(B);
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glm::vec2 D = glm::unpackSnorm2x16(C);
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 32767.0f * 2.0f)) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_packUnorm4x16()
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{
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int Error = 0;
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std::vector<glm::vec4> A;
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A.push_back(glm::vec4(1.0f));
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A.push_back(glm::vec4(0.5f));
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A.push_back(glm::vec4(0.1f));
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A.push_back(glm::vec4(0.0f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec4 B(A[i]);
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glm::uint64 C = glm::packUnorm4x16(B);
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glm::vec4 D(glm::unpackUnorm4x16(C));
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 65535.f)) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_packSnorm4x16()
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{
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int Error = 0;
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std::vector<glm::vec4> A;
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A.push_back(glm::vec4( 1.0f, 0.0f, -0.5f, 0.5f));
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A.push_back(glm::vec4(-0.3f,-0.7f, 0.3f, 0.7f));
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A.push_back(glm::vec4(-0.1f, 0.1f, -0.2f, 0.2f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec4 B(A[i]);
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glm::uint64 C = glm::packSnorm4x16(B);
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glm::vec4 D(glm::unpackSnorm4x16(C));
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 32767.0f * 2.0f)) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_packUnorm1x8()
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{
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int Error = 0;
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std::vector<glm::vec1> A;
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A.push_back(glm::vec1(1.0f));
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A.push_back(glm::vec1(0.5f));
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A.push_back(glm::vec1(0.0f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec1 B(A[i]);
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glm::uint8 C = glm::packUnorm1x8(B.x);
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glm::vec1 D(glm::unpackUnorm1x8(C));
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 255.f)) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_packSnorm1x8()
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{
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int Error = 0;
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std::vector<glm::vec1> A;
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A.push_back(glm::vec1( 1.0f));
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A.push_back(glm::vec1(-0.7f));
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for(std::size_t i = 0; i < A.size(); ++i)
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{
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glm::vec1 B(A[i]);
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glm::uint8 C = glm::packSnorm1x8(B.x);
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glm::vec1 D(glm::unpackSnorm1x8(C));
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 127.f)) ? 0 : 1;
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}
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return Error;
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}
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int test_packUnorm2x8()
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{
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int Error = 0;
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std::vector<glm::vec2> A;
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A.push_back(glm::vec2(1.0f, 0.7f));
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A.push_back(glm::vec2(0.5f, 0.1f));
|
|
|
|
for(std::size_t i = 0; i < A.size(); ++i)
|
|
{
|
|
glm::vec2 B(A[i]);
|
|
glm::uint16 C = glm::packUnorm2x8(B);
|
|
glm::vec2 D = glm::unpackUnorm2x8(C);
|
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Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 255.f)) ? 0 : 1;
|
|
assert(!Error);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
|
|
int test_packSnorm2x8()
|
|
{
|
|
int Error = 0;
|
|
|
|
std::vector<glm::vec2> A;
|
|
A.push_back(glm::vec2( 1.0f, 0.0f));
|
|
A.push_back(glm::vec2(-0.7f,-0.1f));
|
|
|
|
for(std::size_t i = 0; i < A.size(); ++i)
|
|
{
|
|
glm::vec2 B(A[i]);
|
|
glm::uint16 C = glm::packSnorm2x8(B);
|
|
glm::vec2 D = glm::unpackSnorm2x8(C);
|
|
Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 127.f)) ? 0 : 1;
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
|
|
int test_packUnorm4x8()
|
|
{
|
|
int Error = 0;
|
|
|
|
std::vector<glm::vec4> A;
|
|
A.push_back(glm::vec4(1.0f, 0.7f, 0.3f, 0.0f));
|
|
A.push_back(glm::vec4(0.5f, 0.1f, 0.2f, 0.3f));
|
|
|
|
for(std::size_t i = 0; i < A.size(); ++i)
|
|
{
|
|
glm::vec4 B(A[i]);
|
|
glm::uint32 C = glm::packUnorm4x8(B);
|
|
glm::vec4 D = glm::unpackUnorm4x8(C);
|
|
Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 255.f)) ? 0 : 1;
|
|
assert(!Error);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
|
|
int test_packSnorm4x8()
|
|
{
|
|
int Error = 0;
|
|
|
|
std::vector<glm::vec4> A;
|
|
A.push_back(glm::vec4( 1.0f, 0.0f,-0.5f,-1.0f));
|
|
A.push_back(glm::vec4(-0.7f,-0.1f, 0.1f, 0.7f));
|
|
|
|
for(std::size_t i = 0; i < A.size(); ++i)
|
|
{
|
|
glm::vec4 B(A[i]);
|
|
glm::uint32 C = glm::packSnorm4x8(B);
|
|
glm::vec4 D = glm::unpackSnorm4x8(C);
|
|
Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 127.f)) ? 0 : 1;
|
|
assert(!Error);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
|
|
int test_packUnorm()
|
|
{
|
|
int Error = 0;
|
|
|
|
std::vector<glm::vec2> A;
|
|
A.push_back(glm::vec2(1.0f, 0.7f));
|
|
A.push_back(glm::vec2(0.5f, 0.1f));
|
|
|
|
for(std::size_t i = 0; i < A.size(); ++i)
|
|
{
|
|
glm::vec2 B(A[i]);
|
|
glm::u16vec2 C = glm::packUnorm<glm::uint16>(B);
|
|
glm::vec2 D = glm::unpackUnorm<glm::uint16, float>(C);
|
|
Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 255.f)) ? 0 : 1;
|
|
assert(!Error);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
|
|
int test_packSnorm()
|
|
{
|
|
int Error = 0;
|
|
|
|
std::vector<glm::vec2> A;
|
|
A.push_back(glm::vec2( 1.0f, 0.0f));
|
|
A.push_back(glm::vec2(-0.5f,-0.7f));
|
|
A.push_back(glm::vec2(-0.1f, 0.1f));
|
|
|
|
for(std::size_t i = 0; i < A.size(); ++i)
|
|
{
|
|
glm::vec2 B(A[i]);
|
|
glm::i16vec2 C = glm::packSnorm<glm::int16>(B);
|
|
glm::vec2 D = glm::unpackSnorm<glm::int16, float>(C);
|
|
Error += glm::all(glm::epsilonEqual(B, D, 1.0f / 32767.0f * 2.0f)) ? 0 : 1;
|
|
assert(!Error);
|
|
}
|
|
|
|
return Error;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
int Error(0);
|
|
|
|
Error += test_packUnorm();
|
|
Error += test_packSnorm();
|
|
|
|
Error += test_packSnorm1x16();
|
|
Error += test_packSnorm2x16();
|
|
Error += test_packSnorm4x16();
|
|
|
|
Error += test_packSnorm1x8();
|
|
Error += test_packSnorm2x8();
|
|
Error += test_packSnorm4x8();
|
|
|
|
Error += test_packUnorm1x16();
|
|
Error += test_packUnorm2x16();
|
|
Error += test_packUnorm4x16();
|
|
|
|
Error += test_packUnorm1x8();
|
|
Error += test_packUnorm2x8();
|
|
Error += test_packUnorm4x8();
|
|
|
|
Error += test_F2x11_1x10();
|
|
Error += test_F3x9_E1x5();
|
|
Error += test_Snorm3x10_1x2();
|
|
Error += test_Unorm3x10_1x2();
|
|
Error += test_I3x10_1x2();
|
|
Error += test_U3x10_1x2();
|
|
Error += test_Half1x16();
|
|
Error += test_Half4x16();
|
|
|
|
return Error;
|
|
}
|