144 lines
3.5 KiB
C++
144 lines
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
/// OpenGL Mathematics (glm.g-truc.net)
|
|
///
|
|
/// Copyright (c) 2005 - 2013 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.
|
|
///
|
|
/// 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.
|
|
///
|
|
/// @ref test
|
|
/// @file test/gtc/packing.cpp
|
|
/// @date 2013-08-09 / 2013-08-09
|
|
/// @author Christophe Riccio
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
#include <glm/glm.hpp>
|
|
#include <glm/gtc/packing.hpp>
|
|
#include <cstdio>
|
|
|
|
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();
|
|
|
|
return Error;
|
|
}
|