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magnum/src/Magnum/Math/Test/PackingTest.cpp

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Math: renamed {de,}normalize() to {,un}pack() in a new Packing.h header. To be more consistent with GLSL naming. Also, the original naming was quite misleading, as normalize() is used in GLSL for something completely different. If building with deprecated APIs, the Functions.h header includes the new Packing.h header and the {de,}normalize() functions are defined as deprecated aliases to the new functions. This will be removed at some point in the future.
9 years ago
/*
This file is part of Magnum.
Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016
Vladimír Vondruš <mosra@centrum.cz>
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.
*/
#include <Corrade/TestSuite/Tester.h>
#include "Magnum/Math/Packing.h"
#include "Magnum/Math/Vector3.h"
namespace Magnum { namespace Math { namespace Test {
struct PackingTest: Corrade::TestSuite::Tester {
explicit PackingTest();
void unpackUnsigned();
void unpackSigned();
void packUnsigned();
void packSigned();
void reunpackUnsinged();
void reunpackSinged();
void unpackTypeDeduction();
};
typedef Math::Vector3<Float> Vector3;
typedef Math::Vector3<UnsignedByte> Vector3ub;
typedef Math::Vector3<Byte> Vector3b;
PackingTest::PackingTest() {
addTests({&PackingTest::unpackUnsigned,
&PackingTest::unpackSigned,
&PackingTest::packUnsigned,
&PackingTest::packSigned,
&PackingTest::reunpackUnsinged,
&PackingTest::reunpackSinged,
&PackingTest::unpackTypeDeduction});
}
void PackingTest::unpackUnsigned() {
CORRADE_COMPARE((Math::unpack<Float, UnsignedByte>(0)), 0.0f);
CORRADE_COMPARE((Math::unpack<Float, UnsignedByte>(255)), 1.0f);
CORRADE_COMPARE((Math::unpack<Double, UnsignedInt>(0)), 0.0);
CORRADE_COMPARE((Math::unpack<Double, UnsignedInt>(std::numeric_limits<UnsignedInt>::max())), 1.0);
#ifndef MAGNUM_TARGET_WEBGL
CORRADE_COMPARE((Math::unpack<long double, UnsignedLong>(0)), 0.0);
CORRADE_COMPARE((Math::unpack<long double, UnsignedLong>(std::numeric_limits<UnsignedLong>::max())), 1.0);
#endif
CORRADE_COMPARE((Math::unpack<Float, UnsignedShort>(0)), 0.0f);
CORRADE_COMPARE((Math::unpack<Float, UnsignedShort>(std::numeric_limits<UnsignedShort>::max())), 1.0f);
CORRADE_COMPARE((Math::unpack<Float, UnsignedShort>(8192)), 0.125002f);
CORRADE_COMPARE((Math::unpack<Float, UnsignedShort>(49152)), 0.750011f);
CORRADE_COMPARE(Math::unpack<Vector3>(Vector3ub(0, 127, 255)), Vector3(0.0f, 0.498039f, 1.0f));
}
void PackingTest::unpackSigned() {
CORRADE_COMPARE((Math::unpack<Float, Byte>(127)), 1.0f);
CORRADE_COMPARE((Math::unpack<Float, Byte>(0)), 0.0f);
CORRADE_COMPARE((Math::unpack<Float, Byte>(-128)), -1.0f);
CORRADE_COMPARE((Math::unpack<Float, Short>(std::numeric_limits<Short>::min())), -1.0f);
CORRADE_COMPARE((Math::unpack<Float, Short>(0)), 0.0f);
CORRADE_COMPARE((Math::unpack<Float, Short>(std::numeric_limits<Short>::max())), 1.0f);
CORRADE_COMPARE((Math::unpack<Double, Int>(std::numeric_limits<Int>::min())), -1.0);
CORRADE_COMPARE((Math::unpack<Double, Int>(0)), 0.0);
CORRADE_COMPARE((Math::unpack<Double, Int>(std::numeric_limits<Int>::max())), 1.0);
#ifndef MAGNUM_TARGET_WEBGL
CORRADE_COMPARE((Math::unpack<long double, Long>(std::numeric_limits<Long>::min())), -1.0);
CORRADE_COMPARE((Math::unpack<long double, Long>(0)), 0.0);
CORRADE_COMPARE((Math::unpack<long double, Long>(std::numeric_limits<Long>::max())), 1.0);
#endif
CORRADE_COMPARE((Math::unpack<Float, Short>(16384)), 0.500015f);
CORRADE_COMPARE((Math::unpack<Float, Short>(-16384)), -0.500015f);
CORRADE_COMPARE(Math::unpack<Vector3>(Vector3b(0, -127, 64)), Vector3(0.0f, -1.0f, 0.503937f));
}
void PackingTest::packUnsigned() {
CORRADE_COMPARE(Math::pack<UnsignedByte>(0.0f), 0);
CORRADE_COMPARE(Math::pack<UnsignedByte>(1.0f), 255);
CORRADE_COMPARE(Math::pack<UnsignedShort>(0.0f), 0);
CORRADE_COMPARE(Math::pack<UnsignedShort>(1.0f), std::numeric_limits<UnsignedShort>::max());
CORRADE_COMPARE(Math::pack<UnsignedInt>(0.0), 0);
CORRADE_COMPARE(Math::pack<UnsignedInt>(1.0), std::numeric_limits<UnsignedInt>::max());
#ifndef MAGNUM_TARGET_WEBGL
CORRADE_COMPARE(Math::pack<UnsignedLong>(0.0l), 0);
{
#ifdef CORRADE_MSVC2015_COMPATIBILITY
CORRADE_EXPECT_FAIL("Long double (de)normalization is broken on MSVC <= 2015.");
#endif
CORRADE_COMPARE(Math::pack<UnsignedLong>(1.0l), std::numeric_limits<UnsignedLong>::max());
}
#endif
CORRADE_COMPARE(Math::pack<UnsignedShort>(0.33f), 21626);
CORRADE_COMPARE(Math::pack<UnsignedShort>(0.66f), 43253);
CORRADE_COMPARE(Math::pack<Vector3ub>(Vector3(0.0f, 0.5f, 1.0f)), Vector3ub(0, 127, 255));
}
void PackingTest::packSigned() {
CORRADE_COMPARE(Math::pack<Byte>(-1.0f), -127);
CORRADE_COMPARE(Math::pack<Byte>(0.0f), 0);
CORRADE_COMPARE(Math::pack<Byte>(1.0f), 127);
CORRADE_COMPARE(Math::pack<Short>(-1.0f), std::numeric_limits<Short>::min()+1);
CORRADE_COMPARE(Math::pack<Short>(0.0f), 0);
CORRADE_COMPARE(Math::pack<Short>(1.0f), std::numeric_limits<Short>::max());
#ifndef MAGNUM_TARGET_GLES
CORRADE_COMPARE(Math::pack<Int>(-1.0), std::numeric_limits<Int>::min()+1);
CORRADE_COMPARE(Math::pack<Int>(0.0), 0);
CORRADE_COMPARE(Math::pack<Int>(1.0), std::numeric_limits<Int>::max());
{
#ifdef CORRADE_MSVC2015_COMPATIBILITY
CORRADE_EXPECT_FAIL("Long double (de)normalization is broken on MSVC <= 2015.");
#endif
CORRADE_COMPARE(Math::pack<Long>(-1.0l), std::numeric_limits<Long>::min()+1);
}
CORRADE_COMPARE(Math::pack<Long>(0.0l), 0);
{
#ifdef CORRADE_MSVC2015_COMPATIBILITY
CORRADE_EXPECT_FAIL("Long double (de)normalization is broken on MSVC <= 2015.");
#endif
CORRADE_COMPARE(Math::pack<Long>(1.0l), std::numeric_limits<Long>::max());
}
#endif
CORRADE_COMPARE(Math::pack<Short>(-0.33f), -10813);
CORRADE_COMPARE(Math::pack<Short>(0.66f), 21626);
CORRADE_COMPARE(Math::pack<Vector3b>(Vector3(0.0f, -1.0f, 0.5f)), Vector3b(0, -127, 63));
}
void PackingTest::reunpackUnsinged() {
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<UnsignedByte>(0.0f)), 0.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<UnsignedByte>(1.0f)), 1.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<UnsignedShort>(0.0f)), 0.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<UnsignedShort>(1.0f)), 1.0f);
CORRADE_COMPARE(Math::unpack<Double>(Math::pack<UnsignedInt>(0.0)), 0.0);
CORRADE_COMPARE(Math::unpack<Double>(Math::pack<UnsignedInt>(1.0)), 1.0);
#ifndef MAGNUM_TARGET_WEBGL
CORRADE_COMPARE(Math::unpack<long double>(Math::pack<UnsignedLong>(0.0l)), 0.0l);
{
#ifdef CORRADE_MSVC2015_COMPATIBILITY
CORRADE_EXPECT_FAIL("Long double (de)normalization is broken on MSVC <= 2015.");
#endif
CORRADE_COMPARE(Math::unpack<long double>(Math::pack<UnsignedLong>(1.0l)), 1.0l);
}
#endif
}
void PackingTest::reunpackSinged() {
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<Byte>(-1.0f)), -1.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<Byte>(0.0f)), 0.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<Byte>(1.0f)), 1.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<Short>(-1.0f)), -1.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<Short>(0.0f)), 0.0f);
CORRADE_COMPARE(Math::unpack<Float>(Math::pack<Short>(1.0f)), 1.0f);
CORRADE_COMPARE(Math::unpack<Double>(Math::pack<Int>(-1.0)), -1.0);
CORRADE_COMPARE(Math::unpack<Double>(Math::pack<Int>(0.0)), 0.0);
CORRADE_COMPARE(Math::unpack<Double>(Math::pack<Int>(1.0)), 1.0);
#ifndef MAGNUM_TARGET_WEBGL
CORRADE_COMPARE(Math::unpack<long double>(Math::pack<Long>(-1.0l)), -1.0l);
CORRADE_COMPARE(Math::unpack<long double>(Math::pack<Long>(0.0l)), 0.0l);
{
#ifdef CORRADE_MSVC2015_COMPATIBILITY
CORRADE_EXPECT_FAIL("Long double (de)normalization is broken on MSVC <= 2015.");
#endif
CORRADE_COMPARE(Math::unpack<long double>(Math::pack<Long>(1.0l)), 1.0l);
}
#endif
}
void PackingTest::unpackTypeDeduction() {
if(std::is_signed<char>::value)
CORRADE_COMPARE(Math::unpack<Float>('\x7F'), 1.0f);
else {
/* Raspberry Pi `char` is unsigned (huh) */
CORRADE_VERIFY(std::is_unsigned<char>::value);
CORRADE_COMPARE(Math::unpack<Float>('\x7F'), 0.498039f);
}
CORRADE_COMPARE((Math::unpack<Float, Byte>('\x7F')), 1.0f);
}
}}}
CORRADE_TEST_MAIN(Magnum::Math::Test::PackingTest)