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846 lines
19 KiB
C++
846 lines
19 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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/// OpenGL Mathematics (glm.g-truc.net)
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///
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/// Copyright (c) 2005 - 2013 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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/// 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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/// @ref test
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/// @file test/gtc/half_float.cpp
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/// @date 2011-05-32 / 2012-04-07
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/// @author Christophe Riccio
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///////////////////////////////////////////////////////////////////////////////////
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#include <glm/glm.hpp>
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#include <glm/gtc/half_float.hpp>
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#include <cstdio>
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int test_half_precision_scalar()
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{
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int Error = 0;
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Error += sizeof(glm::half) == 2 ? 0 : 1;
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return Error;
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}
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int test_half_precision_vec()
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{
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int Error = 0;
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Error += sizeof(glm::hvec2) == 4 ? 0 : 1;
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Error += sizeof(glm::hvec3) == 6 ? 0 : 1;
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Error += sizeof(glm::hvec4) == 8 ? 0 : 1;
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return Error;
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}
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int test_half_precision_mat()
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{
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int Error = 0;
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Error += sizeof(glm::hmat2) == 8 ? 0 : 1;
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Error += sizeof(glm::hmat3) == 18 ? 0 : 1;
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Error += sizeof(glm::hmat4) == 32 ? 0 : 1;
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Error += sizeof(glm::hmat2x2) == 8 ? 0 : 1;
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Error += sizeof(glm::hmat2x3) == 12 ? 0 : 1;
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Error += sizeof(glm::hmat2x4) == 16 ? 0 : 1;
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Error += sizeof(glm::hmat3x2) == 12 ? 0 : 1;
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Error += sizeof(glm::hmat3x3) == 18 ? 0 : 1;
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Error += sizeof(glm::hmat3x4) == 24 ? 0 : 1;
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Error += sizeof(glm::hmat4x2) == 16 ? 0 : 1;
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Error += sizeof(glm::hmat4x3) == 24 ? 0 : 1;
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Error += sizeof(glm::hmat4x4) == 32 ? 0 : 1;
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return Error;
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}
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int test_half_ctor_mat2x2()
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{
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int Error = 0;
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{
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glm::hvec2 A(1, 2);
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glm::hvec2 B(3, 4);
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glm::hmat2 C(A, B);//, 2.0f, 3.0f, 4.0f);
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glm::hmat2 D(1, 2, 3, 4);
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Error += C[0] == D[0] ? 0 : 1;
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Error += C[1] == D[1] ? 0 : 1;
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}
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{
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glm::hvec2 A(1, 2.0);
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glm::hvec2 B(3, 4.0);
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glm::hmat2 C(A, B);//, 2.0f, 3.0f, 4.0f);
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glm::hmat2 D(1, 2.0, 3u, 4.0f);
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Error += C[0] == D[0] ? 0 : 1;
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Error += C[1] == D[1] ? 0 : 1;
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}
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{
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glm::hmat2 A(1);
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glm::mat2 B(1);
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glm::hmat2 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat2x3()
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{
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int Error = 0;
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{
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glm::hvec3 A(1, 2, 3);
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glm::hvec3 B(4, 5, 6);
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glm::hmat2x3 C(A, B);
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glm::hmat2x3 D(1, 2, 3, 4, 5, 6);
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Error += C[0] == D[0] ? 0 : 1;
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Error += C[1] == D[1] ? 0 : 1;
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}
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{
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glm::hvec3 A(1.0, 2.0f, 3u);
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glm::hvec3 B(4, 5u, 6u);
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glm::hmat2x3 C(A, B);
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glm::hmat2x3 D(1, 2.0, 3u, 4.0f, 5.0, 6);
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Error += C[0] == D[0] ? 0 : 1;
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Error += C[1] == D[1] ? 0 : 1;
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}
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{
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glm::hmat2x3 A(1);
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glm::mat2x3 B(1);
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glm::hmat2x3 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat2x4()
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{
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int Error = 0;
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{
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glm::hvec4 A(1, 2, 3, 4);
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glm::hvec4 B(5, 6, 7, 8);
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glm::hmat2x4 C(A, B);
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glm::hmat2x4 D(1, 2, 3, 4, 5, 6, 7, 8);
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Error += C[0] == D[0] ? 0 : 1;
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Error += C[1] == D[1] ? 0 : 1;
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}
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{
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glm::hvec4 A(1.0, 2.0f, 3u, 4u);
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glm::hvec4 B(5u, 6u, 7.0, 8.0);
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glm::hmat2x4 C(A, B);
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glm::hmat2x4 D(1, 2.0, 3u, 4.0f, 5.0, 6, 7.0f, 8.0f);
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Error += C[0] == D[0] ? 0 : 1;
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Error += C[1] == D[1] ? 0 : 1;
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}
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{
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glm::hmat2x4 A(1);
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glm::mat2x4 B(1);
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glm::hmat2x4 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat3x2()
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{
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int Error = 0;
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{
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glm::hvec2 A(1, 2);
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glm::hvec2 B(3, 4);
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glm::hvec2 C(5, 6);
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glm::hmat3x2 M(A, B, C);
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glm::hmat3x2 N(1, 2, 3, 4, 5, 6);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hvec2 A(1, 2.0);
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glm::hvec2 B(3, 4.0f);
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glm::hvec2 C(5u, 6.0f);
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glm::hmat3x2 M(A, B, C);
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glm::hmat3x2 N(1, 2.0, 3u, 4.0f, 5, 6);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hmat3x2 A(1);
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glm::mat3x2 B(1);
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glm::hmat3x2 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat3x3()
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{
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int Error = 0;
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{
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glm::hvec3 A(1, 2, 3);
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glm::hvec3 B(4, 5, 6);
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glm::hvec3 C(7, 8, 9);
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glm::hmat3x3 M(A, B, C);
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glm::hmat3x3 N(1, 2, 3, 4, 5, 6, 7, 8, 9);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hvec3 A(1, 2.0, 3.0f);
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glm::hvec3 B(4, 5.0f, 6.0);
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glm::hvec3 C(7u, 8.0f, 9);
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glm::hmat3x3 M(A, B, C);
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glm::hmat3x3 N(1, 2.0, 3u, 4.0f, 5, 6, 7.0f, 8.0, 9u);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hmat3x3 A(1);
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glm::mat3x3 B(1);
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glm::hmat3x3 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat3x4()
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{
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int Error = 0;
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{
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glm::hvec4 A(1, 2, 3, 4);
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glm::hvec4 B(5, 6, 7, 8);
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glm::hvec4 C(9, 10, 11, 12);
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glm::hmat3x4 M(A, B, C);
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glm::hmat3x4 N(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hvec4 A(1, 2.0, 3.0f, 4u);
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glm::hvec4 B(5, 6.0f, 7.0, 8);
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glm::hvec4 C(9u, 10.0f, 11, 12.f);
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glm::hmat3x4 M(A, B, C);
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glm::hmat3x4 N(1, 2.0, 3u, 4.0f, 5, 6, 7.0f, 8.0, 9u, 10, 11.f, 12.0);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hmat3x4 A(1);
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glm::mat3x4 B(1);
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glm::hmat3x4 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat4x2()
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{
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int Error = 0;
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{
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glm::hvec2 A(1, 2);
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glm::hvec2 B(3, 4);
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glm::hvec2 C(5, 6);
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glm::hvec2 D(7, 8);
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glm::hmat4x2 M(A, B, C, D);
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glm::hmat4x2 N(1, 2, 3, 4, 5, 6, 7, 8);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hvec2 A(1, 2.0);
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glm::hvec2 B(3.0f, 4);
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glm::hvec2 C(5.0, 6u);
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glm::hvec2 D(7, 8u);
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glm::hmat4x2 M(A, B, C, D);
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glm::hmat4x2 N(1, 2.0, 3u, 4.0f, 5u, 6.0, 7, 8.0f);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hmat4x2 A(1);
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glm::mat4x2 B(1);
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glm::hmat4x2 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat4x3()
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{
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int Error = 0;
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{
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glm::hvec3 A(1, 2, 3);
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glm::hvec3 B(4, 5, 6);
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glm::hvec3 C(7, 8, 9);
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glm::hvec3 D(10, 11, 12);
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glm::hmat4x3 M(A, B, C, D);
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glm::hmat4x3 N(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hvec3 A(1, 2.0, 3u);
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glm::hvec3 B(4.0f, 5, 6u);
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glm::hvec3 C(7.0, 8u, 9.f);
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glm::hvec3 D(10, 11u, 12.0);
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glm::hmat4x3 M(A, B, C, D);
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glm::hmat4x3 N(1, 2.0, 3u, 4.0f, 5u, 6.0, 7, 8.0f, 9, 10u, 11.f, 12.0);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hmat4x3 A(1);
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glm::mat4x3 B(1);
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glm::hmat4x3 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_mat4x4()
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{
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int Error = 0;
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{
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glm::hvec4 A(1, 2, 3, 4);
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glm::hvec4 B(5, 6, 7, 8);
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glm::hvec4 C(9, 10, 11, 12);
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glm::hvec4 D(13, 14, 15, 16);
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glm::hmat4x4 M(A, B, C, D);
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glm::hmat4x4 N(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hvec4 A(1, 2.0, 3u, 4);
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glm::hvec4 B(5.0f, 6, 7u, 8.0);
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glm::hvec4 C(9.0, 10u, 11.f, 12);
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glm::hvec4 D(13, 14u, 15.0, 16u);
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glm::hmat4x4 M(A, B, C, D);
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glm::hmat4x4 N(1, 2.0, 3u, 4.0f, 5u, 6.0, 7, 8.0f, 9, 10u, 11.f, 12.0, 13, 14u, 15.0f, 16.0);
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Error += M == N ? 0 : 1;
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}
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{
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glm::hmat4x4 A(1);
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glm::mat4x4 B(1);
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glm::hmat4x4 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_vec2()
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{
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int Error = 0;
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{
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glm::hvec2 A;
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A.x = glm::half(1);
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A.y = glm::half(2);
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//glm::hvec2 A(1, 2);
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glm::hvec2 B(A);
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glm::vec2 C(1, 2);
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glm::hvec2 D(C);
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glm::dvec2 E(1, 2);
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glm::hvec2 F(E);
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glm::hvec2 G(1, 2.0);
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glm::hvec2 H;
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H = A;
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Error += A == B ? 0 : 1;
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//Error += C == D ? 0 : 1; //Error
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//Error += E == F ? 0 : 1; //Error
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Error += A == G ? 0 : 1;
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Error += A == H ? 0 : 1;
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}
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{
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glm::hvec2 A(1);
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glm::vec2 B(1);
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glm::hvec2 C(A);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_vec3()
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{
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int Error = 0;
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{
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glm::hvec3 A(1, 2, 3);
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glm::hvec3 B(A);
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glm::vec3 C(1, 2, 3);
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glm::hvec3 D(C);
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glm::dvec3 E(1, 2, 3);
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glm::hvec3 F(E);
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glm::hvec3 G(1, 2.0, 3);
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glm::hvec3 H;
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H = A;
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Error += A == B ? 0 : 1;
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//Error += C == D ? 0 : 1;
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//Error += E == F ? 0 : 1;
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Error += A == G ? 0 : 1;
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Error += A == H ? 0 : 1;
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}
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{
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glm::hvec3 A(1);
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glm::vec3 B(1);
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glm::hvec3 C(B);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_half_ctor_vec4()
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{
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int Error = 0;
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{
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glm::hvec4 A(1, 2, 3, 4);
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glm::hvec4 B(A);
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glm::vec4 C(1, 2, 3, 4);
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glm::hvec4 D(C);
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glm::dvec4 E(1, 2, 3, 4);
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glm::hvec4 F(E);
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glm::hvec4 G(1, 2.0, 3, 4);
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glm::hvec4 H;
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H = A;
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Error += A == B ? 0 : 1;
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//Error += C == D ? 0 : 1;
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//Error += E == F ? 0 : 1;
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Error += A == G ? 0 : 1;
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Error += A == H ? 0 : 1;
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}
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{
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glm::hvec4 A(1);
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glm::vec4 B(1);
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glm::hvec4 C(B);
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Error += A == C ? 0 : 1;
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}
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return Error;
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}
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int test_hvec2_size()
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{
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int Error = 0;
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Error += sizeof(glm::hvec2) <= sizeof(glm::lowp_vec2) ? 0 : 1;
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Error += 4 == sizeof(glm::hvec2) ? 0 : 1;
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Error += glm::hvec2().length() == 2 ? 0 : 1;
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return Error;
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}
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int test_hvec3_size()
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{
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int Error = 0;
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Error += sizeof(glm::hvec3) <= sizeof(glm::lowp_vec3) ? 0 : 1;
|
|
Error += 6 <= sizeof(glm::hvec3) ? 0 : 1;
|
|
Error += glm::hvec3().length() == 3 ? 0 : 1;
|
|
|
|
return Error;
|
|
}
|
|
|
|
int test_hvec4_size()
|
|
{
|
|
int Error = 0;
|
|
|
|
Error += sizeof(glm::hvec4) <= sizeof(glm::lowp_vec4) ? 0 : 1;
|
|
Error += 8 <= sizeof(glm::hvec4) ? 0 : 1;
|
|
Error += glm::hvec4().length() == 4 ? 0 : 1;
|
|
|
|
return Error;
|
|
}
|
|
|
|
static int test_hvec_precision()
|
|
{
|
|
int Error = 0;
|
|
|
|
Error += sizeof(glm::hvec2) == sizeof(glm::highp_hvec2) ? 0 : 1;
|
|
Error += sizeof(glm::hvec3) == sizeof(glm::highp_hvec3) ? 0 : 1;
|
|
Error += sizeof(glm::hvec4) == sizeof(glm::highp_hvec4) ? 0 : 1;
|
|
|
|
return Error;
|
|
}
|
|
|
|
static int test_hmat_precision()
|
|
{
|
|
int Error = 0;
|
|
|
|
Error += sizeof(glm::hmat2) == sizeof(glm::lowp_hmat2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3) == sizeof(glm::lowp_hmat3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4) == sizeof(glm::lowp_hmat4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2) == sizeof(glm::mediump_hmat2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3) == sizeof(glm::mediump_hmat3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4) == sizeof(glm::mediump_hmat4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2) == sizeof(glm::highp_hmat2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3) == sizeof(glm::highp_hmat3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4) == sizeof(glm::highp_hmat4) ? 0 : 1;
|
|
|
|
Error += sizeof(glm::hmat2x2) == sizeof(glm::lowp_hmat2x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x2) == sizeof(glm::lowp_hmat3x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x2) == sizeof(glm::lowp_hmat4x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2x2) == sizeof(glm::mediump_hmat2x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x2) == sizeof(glm::mediump_hmat3x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x2) == sizeof(glm::mediump_hmat4x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2x2) == sizeof(glm::highp_hmat2x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x2) == sizeof(glm::highp_hmat3x2) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x2) == sizeof(glm::highp_hmat4x2) ? 0 : 1;
|
|
|
|
Error += sizeof(glm::hmat2x3) == sizeof(glm::lowp_hmat2x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x3) == sizeof(glm::lowp_hmat3x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x3) == sizeof(glm::lowp_hmat4x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2x3) == sizeof(glm::mediump_hmat2x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x3) == sizeof(glm::mediump_hmat3x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x3) == sizeof(glm::mediump_hmat4x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2x3) == sizeof(glm::highp_hmat2x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x3) == sizeof(glm::highp_hmat3x3) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x3) == sizeof(glm::highp_hmat4x3) ? 0 : 1;
|
|
|
|
Error += sizeof(glm::hmat2x4) == sizeof(glm::lowp_hmat2x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x4) == sizeof(glm::lowp_hmat3x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x4) == sizeof(glm::lowp_hmat4x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2x4) == sizeof(glm::mediump_hmat2x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x4) == sizeof(glm::mediump_hmat3x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x4) == sizeof(glm::mediump_hmat4x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat2x4) == sizeof(glm::highp_hmat2x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat3x4) == sizeof(glm::highp_hmat3x4) ? 0 : 1;
|
|
Error += sizeof(glm::hmat4x4) == sizeof(glm::highp_hmat4x4) ? 0 : 1;
|
|
|
|
return Error;
|
|
}
|
|
|
|
|
|
namespace detail
|
|
{
|
|
glm::uint16 float2half(glm::uint32 const & f)
|
|
{
|
|
// 10 bits => EE EEEFFFFF
|
|
// 11 bits => EEE EEFFFFFF
|
|
// Half bits => SEEEEEFF FFFFFFFF
|
|
// Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF
|
|
|
|
// 0x00007c00 => 00000000 00000000 01111100 00000000
|
|
// 0x000003ff => 00000000 00000000 00000011 11111111
|
|
// 0x38000000 => 00111000 00000000 00000000 00000000
|
|
// 0x7f800000 => 01111111 10000000 00000000 00000000
|
|
// 0x00008000 => 00000000 00000000 10000000 00000000
|
|
return
|
|
((f >> 16) & 0x8000) | // sign
|
|
((((f & 0x7f800000) - 0x38000000) >> 13) & 0x7c00) | // exponential
|
|
((f >> 13) & 0x03ff); // Mantissa
|
|
}
|
|
|
|
glm::uint16 float2packed11(glm::uint32 const & f)
|
|
{
|
|
// 10 bits => EE EEEFFFFF
|
|
// 11 bits => EEE EEFFFFFF
|
|
// Half bits => SEEEEEFF FFFFFFFF
|
|
// Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF
|
|
|
|
// 0x000007c0 => 00000000 00000000 00000111 11000000
|
|
// 0x00007c00 => 00000000 00000000 01111100 00000000
|
|
// 0x000003ff => 00000000 00000000 00000011 11111111
|
|
// 0x38000000 => 00111000 00000000 00000000 00000000
|
|
// 0x7f800000 => 01111111 10000000 00000000 00000000
|
|
// 0x00008000 => 00000000 00000000 10000000 00000000
|
|
return
|
|
((((f & 0x7f800000) - 0x38000000) >> 17) & 0x07c0) | // exponential
|
|
((f >> 17) & 0x003f); // Mantissa
|
|
}
|
|
|
|
glm::uint float2packed10(glm::uint const & f)
|
|
{
|
|
// 10 bits => EE EEEFFFFF
|
|
// 11 bits => EEE EEFFFFFF
|
|
// Half bits => SEEEEEFF FFFFFFFF
|
|
// Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF
|
|
|
|
// 0x0000001F => 00000000 00000000 00000000 00011111
|
|
// 0x0000003F => 00000000 00000000 00000000 00111111
|
|
// 0x000003E0 => 00000000 00000000 00000011 11100000
|
|
// 0x000007C0 => 00000000 00000000 00000111 11000000
|
|
// 0x00007C00 => 00000000 00000000 01111100 00000000
|
|
// 0x000003FF => 00000000 00000000 00000011 11111111
|
|
// 0x38000000 => 00111000 00000000 00000000 00000000
|
|
// 0x7f800000 => 01111111 10000000 00000000 00000000
|
|
// 0x00008000 => 00000000 00000000 10000000 00000000
|
|
return
|
|
((((f & 0x7f800000) - 0x38000000) >> 18) & 0x03E0) | // exponential
|
|
((f >> 18) & 0x001f); // Mantissa
|
|
}
|
|
|
|
glm::uint half2float(glm::uint const & h)
|
|
{
|
|
return ((h & 0x8000) << 16) | ((( h & 0x7c00) + 0x1C000) << 13) | ((h & 0x03FF) << 13);
|
|
}
|
|
|
|
union uif
|
|
{
|
|
glm::uint i;
|
|
float f;
|
|
};
|
|
|
|
glm::uint floatTo11bit(float x)
|
|
{
|
|
if(x == 0.0f)
|
|
return 0;
|
|
else if(glm::isnan(x))
|
|
return ~0;
|
|
else if(glm::isinf(x))
|
|
return 0x1f << 6;
|
|
|
|
uif Union;
|
|
Union.f = x;
|
|
return float2packed11(Union.i);
|
|
}
|
|
|
|
glm::uint floatTo10bit(float x)
|
|
{
|
|
if(x == 0.0f)
|
|
return 0;
|
|
else if(glm::isnan(x))
|
|
return ~0;
|
|
else if(glm::isinf(x))
|
|
return 0x1f << 5;
|
|
|
|
uif Union;
|
|
Union.f = x;
|
|
return float2packed10(Union.i);
|
|
}
|
|
|
|
glm::uint f11_f11_f10(float x, float y, float z)
|
|
{
|
|
return ((floatTo11bit(x) & ((1 << 11) - 1)) << 0) | ((floatTo11bit(y) & ((1 << 11) - 1)) << 11) | ((floatTo10bit(z) & ((1 << 10) - 1)) << 22);
|
|
}
|
|
}//namespace detail
|
|
|
|
class f11f11f10
|
|
{
|
|
public:
|
|
f11f11f10(float x, float y, float z) :
|
|
x(detail::floatTo11bit(x)),
|
|
y(detail::floatTo11bit(y)),
|
|
z(detail::floatTo10bit(z))
|
|
{}
|
|
/*
|
|
operator glm::vec3()
|
|
{
|
|
return glm::vec3(
|
|
float(x) / 511.0f,
|
|
float(y) / 511.0f,
|
|
float(z) / 511.0f);
|
|
}
|
|
*/
|
|
private:
|
|
int x : 11;
|
|
int y : 11;
|
|
int z : 10;
|
|
};
|
|
|
|
void print_bits(glm::half const & s)
|
|
{
|
|
union
|
|
{
|
|
glm::detail::hdata h;
|
|
unsigned short i;
|
|
} uif;
|
|
|
|
uif.h = s._data();
|
|
|
|
printf("f16: ");
|
|
for(std::size_t j = sizeof(s) * 8; j > 0; --j)
|
|
{
|
|
if(j == 10 || j == 15)
|
|
printf(" ");
|
|
printf("%d", (uif.i & (1 << (j - 1))) ? 1 : 0);
|
|
}
|
|
}
|
|
|
|
void print_bits(float const & s)
|
|
{
|
|
union
|
|
{
|
|
float f;
|
|
unsigned int i;
|
|
} uif;
|
|
|
|
uif.f = s;
|
|
|
|
printf("f32: ");
|
|
for(std::size_t j = sizeof(s) * 8; j > 0; --j)
|
|
{
|
|
if(j == 23 || j == 31)
|
|
printf(" ");
|
|
printf("%d", (uif.i & (1 << (j - 1))) ? 1 : 0);
|
|
}
|
|
}
|
|
|
|
void print_10bits(glm::uint const & s)
|
|
{
|
|
printf("10b: ");
|
|
for(std::size_t j = 10; j > 0; --j)
|
|
{
|
|
if(j == 5)
|
|
printf(" ");
|
|
printf("%d", (s & (1 << (j - 1))) ? 1 : 0);
|
|
}
|
|
}
|
|
|
|
void print_11bits(glm::uint const & s)
|
|
{
|
|
printf("11b: ");
|
|
for(std::size_t j = 11; j > 0; --j)
|
|
{
|
|
if(j == 6)
|
|
printf(" ");
|
|
printf("%d", (s & (1 << (j - 1))) ? 1 : 0);
|
|
}
|
|
}
|
|
|
|
void print_value(float const & s)
|
|
{
|
|
printf("%2.5f, ", s);
|
|
print_bits(s);
|
|
printf(", ");
|
|
print_bits(glm::half(s));
|
|
printf(", ");
|
|
print_11bits(detail::floatTo11bit(s));
|
|
printf(", ");
|
|
print_10bits(detail::floatTo10bit(s));
|
|
printf("\n");
|
|
}
|
|
|
|
int test_half()
|
|
{
|
|
int Error = 0;
|
|
|
|
print_value(0.0f);
|
|
print_value(0.1f);
|
|
print_value(0.2f);
|
|
print_value(0.3f);
|
|
print_value(0.4f);
|
|
print_value(0.5f);
|
|
print_value(0.6f);
|
|
print_value(1.0f);
|
|
print_value(1.1f);
|
|
print_value(1.2f);
|
|
print_value(1.3f);
|
|
print_value(1.4f);
|
|
print_value(1.5f);
|
|
print_value(1.6f);
|
|
print_value(2.0f);
|
|
print_value(2.1f);
|
|
print_value(2.2f);
|
|
print_value(2.3f);
|
|
print_value(2.4f);
|
|
print_value(2.5f);
|
|
print_value(2.6f);
|
|
|
|
return Error;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
int Error = 0;
|
|
|
|
Error += test_half();
|
|
Error += test_hvec_precision();
|
|
Error += test_hvec2_size();
|
|
Error += test_hvec3_size();
|
|
Error += test_hvec4_size();
|
|
Error += test_half_ctor_vec2();
|
|
Error += test_half_ctor_vec3();
|
|
Error += test_half_ctor_vec4();
|
|
Error += test_half_ctor_mat2x2();
|
|
Error += test_half_ctor_mat2x3();
|
|
Error += test_half_ctor_mat2x4();
|
|
Error += test_half_ctor_mat3x2();
|
|
Error += test_half_ctor_mat3x3();
|
|
Error += test_half_ctor_mat3x4();
|
|
Error += test_half_ctor_mat4x2();
|
|
Error += test_half_ctor_mat4x3();
|
|
Error += test_half_ctor_mat4x4();
|
|
Error += test_half_precision_scalar();
|
|
Error += test_half_precision_vec();
|
|
Error += test_half_precision_mat();
|
|
|
|
return Error;
|
|
}
|