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Added GTC_bitfield extension, promoted GTX_bit

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Christophe Riccio 2014-10-26 00:22:08 +02:00
parent 1b6b8183a0
commit 087d6292e3
9 changed files with 1216 additions and 1202 deletions
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///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2014 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 gtc_bit
/// @file glm/gtc/bitfield.hpp
/// @date 2014-10-25 / 2014-10-25
/// @author Christophe Riccio
///
/// @see core (dependence)
/// @see gtc_bitfield (dependence)
///
/// @defgroup gtc_bitfield GLM_GTC_bitfield
/// @ingroup gtc
///
/// @brief Allow to perform bit operations on integer values
///
/// <glm/gtc/bitfield.hpp> need to be included to use these functionalities.
///////////////////////////////////////////////////////////////////////////////////
#pragma once
// Dependencies
#include "../detail/setup.hpp"
#include "../detail/precision.hpp"
#include "../detail/type_int.hpp"
#if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED))
# pragma message("GLM: GLM_GTC_bitfield extension included")
#endif
namespace glm
{
/// @addtogroup gtc_bitfield
/// @{
/// Build a mask of 'count' bits
/// @see gtc_bitfield
GLM_FUNC_DECL int mask(int Bits);
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<int, P> mask(vecType<int, P> const & v);
/// Rotate all bits to the right.
/// @see gtc_bitfield
template <typename genType>
GLM_FUNC_DECL genType bitRotateRight(genType In, int Shift);
/// Rotate all bits to the left.
/// @see gtc_bitfield
template <typename genType>
GLM_FUNC_DECL genType bitRotateLeft(genType In, int Shift);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int16 bitfieldInterleave(int8 x, int8 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint16 bitfieldInterleave(uint8 x, uint8 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int32 bitfieldInterleave(int16 x, int16 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint32 bitfieldInterleave(uint16 x, uint16 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int64 bitfieldInterleave(int32 x, int32 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint64 bitfieldInterleave(uint32 x, uint32 y);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int32 bitfieldInterleave(int8 x, int8 y, int8 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int64 bitfieldInterleave(int16 x, int16 y, int16 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int64 bitfieldInterleave(int32 x, int32 y, int32 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint64 bitfieldInterleave(uint32 x, uint32 y, uint32 z);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int32 bitfieldInterleave(int8 x, int8 y, int8 z, int8 w);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z, uint8 w);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL int64 bitfieldInterleave(int16 x, int16 y, int16 z, int16 w);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtc_bitfield
GLM_FUNC_DECL uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z, uint16 w);
/// @}
} //namespace glm
#include "bitfield.inl"

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///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2014 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 gtc_bitfield
/// @file glm/gtc/bitfield.inl
/// @date 2011-10-14 / 2012-01-25
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////
namespace glm{
namespace detail
{
template <typename PARAM, typename RET>
GLM_FUNC_DECL RET bitfieldInterleave(PARAM x, PARAM y);
template <typename PARAM, typename RET>
GLM_FUNC_DECL RET bitfieldInterleave(PARAM x, PARAM y, PARAM z);
template <typename PARAM, typename RET>
GLM_FUNC_DECL RET bitfieldInterleave(PARAM x, PARAM y, PARAM z, PARAM w);
template <>
GLM_FUNC_QUALIFIER glm::uint16 bitfieldInterleave(glm::uint8 x, glm::uint8 y)
{
glm::uint16 REG1(x);
glm::uint16 REG2(y);
REG1 = ((REG1 << 4) | REG1) & glm::uint16(0x0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint16(0x0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint16(0x3333);
REG2 = ((REG2 << 2) | REG2) & glm::uint16(0x3333);
REG1 = ((REG1 << 1) | REG1) & glm::uint16(0x5555);
REG2 = ((REG2 << 1) | REG2) & glm::uint16(0x5555);
return REG1 | (REG2 << 1);
}
template <>
GLM_FUNC_QUALIFIER glm::uint32 bitfieldInterleave(glm::uint16 x, glm::uint16 y)
{
glm::uint32 REG1(x);
glm::uint32 REG2(y);
REG1 = ((REG1 << 8) | REG1) & glm::uint32(0x00FF00FF);
REG2 = ((REG2 << 8) | REG2) & glm::uint32(0x00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint32(0x0F0F0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint32(0x0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint32(0x33333333);
REG2 = ((REG2 << 2) | REG2) & glm::uint32(0x33333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint32(0x55555555);
REG2 = ((REG2 << 1) | REG2) & glm::uint32(0x55555555);
return REG1 | (REG2 << 1);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
template <>
GLM_FUNC_QUALIFIER glm::uint32 bitfieldInterleave(glm::uint8 x, glm::uint8 y, glm::uint8 z)
{
glm::uint32 REG1(x);
glm::uint32 REG2(y);
glm::uint32 REG3(z);
REG1 = ((REG1 << 16) | REG1) & glm::uint32(0x00FF0000FF0000FF);
REG2 = ((REG2 << 16) | REG2) & glm::uint32(0x00FF0000FF0000FF);
REG3 = ((REG3 << 16) | REG3) & glm::uint32(0x00FF0000FF0000FF);
REG1 = ((REG1 << 8) | REG1) & glm::uint32(0xF00F00F00F00F00F);
REG2 = ((REG2 << 8) | REG2) & glm::uint32(0xF00F00F00F00F00F);
REG3 = ((REG3 << 8) | REG3) & glm::uint32(0xF00F00F00F00F00F);
REG1 = ((REG1 << 4) | REG1) & glm::uint32(0x30C30C30C30C30C3);
REG2 = ((REG2 << 4) | REG2) & glm::uint32(0x30C30C30C30C30C3);
REG3 = ((REG3 << 4) | REG3) & glm::uint32(0x30C30C30C30C30C3);
REG1 = ((REG1 << 2) | REG1) & glm::uint32(0x9249249249249249);
REG2 = ((REG2 << 2) | REG2) & glm::uint32(0x9249249249249249);
REG3 = ((REG3 << 2) | REG3) & glm::uint32(0x9249249249249249);
return REG1 | (REG2 << 1) | (REG3 << 2);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint16 x, glm::uint16 y, glm::uint16 z)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
glm::uint64 REG3(z);
REG1 = ((REG1 << 32) | REG1) & glm::uint64(0xFFFF00000000FFFF);
REG2 = ((REG2 << 32) | REG2) & glm::uint64(0xFFFF00000000FFFF);
REG3 = ((REG3 << 32) | REG3) & glm::uint64(0xFFFF00000000FFFF);
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x00FF0000FF0000FF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x00FF0000FF0000FF);
REG3 = ((REG3 << 16) | REG3) & glm::uint64(0x00FF0000FF0000FF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0xF00F00F00F00F00F);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0xF00F00F00F00F00F);
REG3 = ((REG3 << 8) | REG3) & glm::uint64(0xF00F00F00F00F00F);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x30C30C30C30C30C3);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x30C30C30C30C30C3);
REG3 = ((REG3 << 4) | REG3) & glm::uint64(0x30C30C30C30C30C3);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x9249249249249249);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x9249249249249249);
REG3 = ((REG3 << 2) | REG3) & glm::uint64(0x9249249249249249);
return REG1 | (REG2 << 1) | (REG3 << 2);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint32 x, glm::uint32 y, glm::uint32 z)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
glm::uint64 REG3(z);
REG1 = ((REG1 << 32) | REG1) & glm::uint64(0xFFFF00000000FFFF);
REG2 = ((REG2 << 32) | REG2) & glm::uint64(0xFFFF00000000FFFF);
REG3 = ((REG3 << 32) | REG3) & glm::uint64(0xFFFF00000000FFFF);
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x00FF0000FF0000FF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x00FF0000FF0000FF);
REG3 = ((REG3 << 16) | REG3) & glm::uint64(0x00FF0000FF0000FF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0xF00F00F00F00F00F);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0xF00F00F00F00F00F);
REG3 = ((REG3 << 8) | REG3) & glm::uint64(0xF00F00F00F00F00F);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x30C30C30C30C30C3);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x30C30C30C30C30C3);
REG3 = ((REG3 << 4) | REG3) & glm::uint64(0x30C30C30C30C30C3);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x9249249249249249);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x9249249249249249);
REG3 = ((REG3 << 2) | REG3) & glm::uint64(0x9249249249249249);
return REG1 | (REG2 << 1) | (REG3 << 2);
}
template <>
GLM_FUNC_QUALIFIER glm::uint32 bitfieldInterleave(glm::uint8 x, glm::uint8 y, glm::uint8 z, glm::uint8 w)
{
glm::uint32 REG1(x);
glm::uint32 REG2(y);
glm::uint32 REG3(z);
glm::uint32 REG4(w);
REG1 = ((REG1 << 12) | REG1) & glm::uint32(0x000F000F000F000F);
REG2 = ((REG2 << 12) | REG2) & glm::uint32(0x000F000F000F000F);
REG3 = ((REG3 << 12) | REG3) & glm::uint32(0x000F000F000F000F);
REG4 = ((REG4 << 12) | REG4) & glm::uint32(0x000F000F000F000F);
REG1 = ((REG1 << 6) | REG1) & glm::uint32(0x0303030303030303);
REG2 = ((REG2 << 6) | REG2) & glm::uint32(0x0303030303030303);
REG3 = ((REG3 << 6) | REG3) & glm::uint32(0x0303030303030303);
REG4 = ((REG4 << 6) | REG4) & glm::uint32(0x0303030303030303);
REG1 = ((REG1 << 3) | REG1) & glm::uint32(0x1111111111111111);
REG2 = ((REG2 << 3) | REG2) & glm::uint32(0x1111111111111111);
REG3 = ((REG3 << 3) | REG3) & glm::uint32(0x1111111111111111);
REG4 = ((REG4 << 3) | REG4) & glm::uint32(0x1111111111111111);
return REG1 | (REG2 << 1) | (REG3 << 2) | (REG4 << 3);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint16 x, glm::uint16 y, glm::uint16 z, glm::uint16 w)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
glm::uint64 REG3(z);
glm::uint64 REG4(w);
REG1 = ((REG1 << 24) | REG1) & glm::uint64(0x000000FF000000FF);
REG2 = ((REG2 << 24) | REG2) & glm::uint64(0x000000FF000000FF);
REG3 = ((REG3 << 24) | REG3) & glm::uint64(0x000000FF000000FF);
REG4 = ((REG4 << 24) | REG4) & glm::uint64(0x000000FF000000FF);
REG1 = ((REG1 << 12) | REG1) & glm::uint64(0x000F000F000F000F);
REG2 = ((REG2 << 12) | REG2) & glm::uint64(0x000F000F000F000F);
REG3 = ((REG3 << 12) | REG3) & glm::uint64(0x000F000F000F000F);
REG4 = ((REG4 << 12) | REG4) & glm::uint64(0x000F000F000F000F);
REG1 = ((REG1 << 6) | REG1) & glm::uint64(0x0303030303030303);
REG2 = ((REG2 << 6) | REG2) & glm::uint64(0x0303030303030303);
REG3 = ((REG3 << 6) | REG3) & glm::uint64(0x0303030303030303);
REG4 = ((REG4 << 6) | REG4) & glm::uint64(0x0303030303030303);
REG1 = ((REG1 << 3) | REG1) & glm::uint64(0x1111111111111111);
REG2 = ((REG2 << 3) | REG2) & glm::uint64(0x1111111111111111);
REG3 = ((REG3 << 3) | REG3) & glm::uint64(0x1111111111111111);
REG4 = ((REG4 << 3) | REG4) & glm::uint64(0x1111111111111111);
return REG1 | (REG2 << 1) | (REG3 << 2) | (REG4 << 3);
}
}//namespace detail
GLM_FUNC_QUALIFIER int mask(int Bits)
{
return Bits >= sizeof(Bits) * 8 ? ~static_cast<int>(0) : (static_cast<int>(1) << Bits) - static_cast<int>(1);
}
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<int, P> mask(vecType<int, P> const & v)
{
return detail::functor1<int, int, P, vecType>::call(mask, v);
}
template <typename genType>
GLM_FUNC_QUALIFIER genType bitRotateRight(genType In, int Shift)
{
GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_integer, "'bitRotateRight' only accept integer values");
int const BitSize = static_cast<genType>(sizeof(T) * 8);
return (In << static_cast<T>(Shift)) | (In >> static_cast<T>(BitSize - Shift));
}
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<T, P> bitRotateRight(vecType<T, P> const & Value, int Shift)
{
GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitRotateRight' only accept integer values");
int const BitSize = static_cast<int>(sizeof(T) * 8);
return (In << static_cast<T>(Shift)) | (In >> static_cast<T>(BitSize - Shift));
}
template <typename genType>
GLM_FUNC_QUALIFIER genType bitRotateLeft(genType In, int Shift)
{
GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_integer, "'bitRotateLeft' only accept integer values");
int const BitSize = static_cast<genType>(sizeof(T) * 8);
return (In >> static_cast<genType>(Shift)) | (In << static_cast<genType>(BitSize - Shift));
}
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<T, P> bitRotateLeft(vecType<T, P> const & In, int Shift)
{
GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitRotateLeft' only accept integer values");
int const BitSize = static_cast<int>(sizeof(T) * 8);
return (In >> static_cast<T>(Shift)) | (In << static_cast<T>(BitSize - Shift));
}
GLM_FUNC_QUALIFIER int16 bitfieldInterleave(int8 x, int8 y)
{
union sign8
{
int8 i;
uint8 u;
} sign_x, sign_y;
union sign16
{
int16 i;
uint16 u;
} result;
sign_x.i = x;
sign_y.i = y;
result.u = bitfieldInterleave(sign_x.u, sign_y.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint16 bitfieldInterleave(uint8 x, uint8 y)
{
return detail::bitfieldInterleave<uint8, uint16>(x, y);
}
GLM_FUNC_QUALIFIER int32 bitfieldInterleave(int16 x, int16 y)
{
union sign16
{
int16 i;
uint16 u;
} sign_x, sign_y;
union sign32
{
int32 i;
uint32 u;
} result;
sign_x.i = x;
sign_y.i = y;
result.u = bitfieldInterleave(sign_x.u, sign_y.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint32 bitfieldInterleave(uint16 x, uint16 y)
{
return detail::bitfieldInterleave<uint16, uint32>(x, y);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int32 x, int32 y)
{
union sign32
{
int32 i;
uint32 u;
} sign_x, sign_y;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
result.u = bitfieldInterleave(sign_x.u, sign_y.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint32 x, uint32 y)
{
return detail::bitfieldInterleave<uint32, uint64>(x, y);
}
GLM_FUNC_QUALIFIER int32 bitfieldInterleave(int8 x, int8 y, int8 z)
{
union sign8
{
int8 i;
uint8 u;
} sign_x, sign_y, sign_z;
union sign32
{
int32 i;
uint32 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z)
{
return detail::bitfieldInterleave<uint8, uint32>(x, y, z);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int16 x, int16 y, int16 z)
{
union sign16
{
int16 i;
uint16 u;
} sign_x, sign_y, sign_z;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z)
{
return detail::bitfieldInterleave<uint32, uint64>(x, y, z);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int32 x, int32 y, int32 z)
{
union sign16
{
int32 i;
uint32 u;
} sign_x, sign_y, sign_z;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint32 x, uint32 y, uint32 z)
{
return detail::bitfieldInterleave<uint32, uint64>(x, y, z);
}
GLM_FUNC_QUALIFIER int32 bitfieldInterleave(int8 x, int8 y, int8 z, int8 w)
{
union sign8
{
int8 i;
uint8 u;
} sign_x, sign_y, sign_z, sign_w;
union sign32
{
int32 i;
uint32 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
sign_w.i = w;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u, sign_w.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z, uint8 w)
{
return detail::bitfieldInterleave<uint8, uint32>(x, y, z, w);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int16 x, int16 y, int16 z, int16 w)
{
union sign16
{
int16 i;
uint16 u;
} sign_x, sign_y, sign_z, sign_w;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
sign_w.i = w;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u, sign_w.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z, uint16 w)
{
return detail::bitfieldInterleave<uint16, uint64>(x, y, z, w);
}
}//namespace glm

6
glm/gtc/constants.inl
View File

@ -20,9 +20,9 @@
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN /// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
/// THE SOFTWARE. /// THE SOFTWARE.
/// ///
/// @ref gtx_constants /// @ref gtc_constants
/// @file glm/gtx/constants.inl /// @file glm/gtc/constants.inl
/// @date 2011-10-14 / 2012-01-25 /// @date 2011-10-14 / 2014-10-25
/// @author Christophe Riccio /// @author Christophe Riccio
/////////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////////

133
glm/gtx/bit.hpp
View File

@ -42,6 +42,7 @@
#include "../detail/type_int.hpp" #include "../detail/type_int.hpp"
#include "../detail/setup.hpp" #include "../detail/setup.hpp"
#include "../detail/precision.hpp" #include "../detail/precision.hpp"
#include "../gtc/bitfield.hpp"
#include <cstddef> #include <cstddef>
#if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED)) #if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED))
@ -50,16 +51,6 @@
namespace glm namespace glm
{ {
/// @addtogroup gtx_bit
/// @{
/// Build a mask of 'count' bits
/// @see gtx_bit
GLM_FUNC_DECL int mask(int Bits);
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<int, P> mask(vecType<int, P> const & v);
//! Find the highest bit set to 1 in a integer variable and return its value. //! Find the highest bit set to 1 in a integer variable and return its value.
/// @see gtx_bit /// @see gtx_bit
template <typename genType> template <typename genType>
@ -90,16 +81,6 @@ namespace glm
template <typename genType> template <typename genType>
GLM_DEPRECATED GLM_FUNC_DECL genType bitRevert(genType const & value); GLM_DEPRECATED GLM_FUNC_DECL genType bitRevert(genType const & value);
//! Rotate all bits to the right.
/// @see gtx_bit
template <typename genType>
GLM_FUNC_DECL genType bitRotateRight(genType const & In, std::size_t Shift);
//! Rotate all bits to the left.
/// @see gtx_bit
template <typename genType>
GLM_FUNC_DECL genType bitRotateLeft(genType const & In, std::size_t Shift);
//! Set to 1 a range of bits. //! Set to 1 a range of bits.
/// @see gtx_bit /// @see gtx_bit
template <typename genIUType> template <typename genIUType>
@ -116,118 +97,6 @@ namespace glm
int const & FromBit, int const & FromBit,
int const & ToBit); int const & ToBit);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int16 bitfieldInterleave(int8 x, int8 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint16 bitfieldInterleave(uint8 x, uint8 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int32 bitfieldInterleave(int16 x, int16 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint32 bitfieldInterleave(uint16 x, uint16 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int64 bitfieldInterleave(int32 x, int32 y);
/// Interleaves the bits of x and y.
/// The first bit is the first bit of x followed by the first bit of y.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint64 bitfieldInterleave(uint32 x, uint32 y);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int32 bitfieldInterleave(int8 x, int8 y, int8 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int64 bitfieldInterleave(int16 x, int16 y, int16 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int64 bitfieldInterleave(int32 x, int32 y, int32 z);
/// Interleaves the bits of x, y and z.
/// The first bit is the first bit of x followed by the first bit of y and the first bit of z.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint64 bitfieldInterleave(uint32 x, uint32 y, uint32 z);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int32 bitfieldInterleave(int8 x, int8 y, int8 z, int8 w);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z, uint8 w);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL int64 bitfieldInterleave(int16 x, int16 y, int16 z, int16 w);
/// Interleaves the bits of x, y, z and w.
/// The first bit is the first bit of x followed by the first bit of y, the first bit of z and finally the first bit of w.
/// The other bits are interleaved following the previous sequence.
///
/// @see gtx_bit
GLM_FUNC_DECL uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z, uint16 w);
/// @} /// @}
} //namespace glm } //namespace glm

578
glm/gtx/bit.inl
View File

@ -12,17 +12,6 @@
namespace glm namespace glm
{ {
GLM_FUNC_QUALIFIER int mask(int Bits)
{
return Bits >= sizeof(Bits) * 8 ? ~static_cast<int>(0) : (static_cast<int>(1) << Bits) - static_cast<int>(1);
}
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_QUALIFIER vecType<int, P> mask(vecType<int, P> const & v)
{
return detail::functor1<int, int, P, vecType>::call(mask, v);
}
// highestBitValue // highestBitValue
template <typename genType> template <typename genType>
GLM_FUNC_QUALIFIER genType highestBitValue GLM_FUNC_QUALIFIER genType highestBitValue
@ -179,102 +168,6 @@ namespace glm
VECTORIZE_VEC(bitRevert) VECTORIZE_VEC(bitRevert)
template <typename genType>
GLM_FUNC_QUALIFIER genType bitRotateRight(genType const & In, std::size_t Shift)
{
GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_integer, "'bitRotateRight' only accept integer values");
std::size_t BitSize = sizeof(genType) * 8;
return (In << Shift) | (In >> (BitSize - Shift));
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER tvec2<T, P> bitRotateRight
(
tvec2<T, P> const & Value,
std::size_t Shift
)
{
return tvec2<T, P>(
bitRotateRight(Value[0], Shift),
bitRotateRight(Value[1], Shift));
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER tvec3<T, P> bitRotateRight
(
tvec3<T, P> const & Value,
std::size_t Shift
)
{
return tvec3<T, P>(
bitRotateRight(Value[0], Shift),
bitRotateRight(Value[1], Shift),
bitRotateRight(Value[2], Shift));
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER tvec4<T, P> bitRotateRight
(
tvec4<T, P> const & Value,
std::size_t Shift
)
{
return tvec4<T, P>(
bitRotateRight(Value[0], Shift),
bitRotateRight(Value[1], Shift),
bitRotateRight(Value[2], Shift),
bitRotateRight(Value[3], Shift));
}
template <typename genType>
GLM_FUNC_QUALIFIER genType bitRotateLeft(genType const & In, std::size_t Shift)
{
GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_integer, "'bitRotateLeft' only accept integer values");
std::size_t BitSize = sizeof(genType) * 8;
return (In >> Shift) | (In << (BitSize - Shift));
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER tvec2<T, P> bitRotateLeft
(
tvec2<T, P> const & Value,
std::size_t Shift
)
{
return tvec2<T, P>(
bitRotateLeft(Value[0], Shift),
bitRotateLeft(Value[1], Shift));
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER tvec3<T, P> bitRotateLeft
(
tvec3<T, P> const & Value,
std::size_t Shift
)
{
return tvec3<T, P>(
bitRotateLeft(Value[0], Shift),
bitRotateLeft(Value[1], Shift),
bitRotateLeft(Value[2], Shift));
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER tvec4<T, P> bitRotateLeft
(
tvec4<T, P> const & Value,
std::size_t Shift
)
{
return tvec4<T, P>(
bitRotateLeft(Value[0], Shift),
bitRotateLeft(Value[1], Shift),
bitRotateLeft(Value[2], Shift),
bitRotateLeft(Value[3], Shift));
}
template <typename genIUType> template <typename genIUType>
GLM_FUNC_QUALIFIER genIUType fillBitfieldWithOne GLM_FUNC_QUALIFIER genIUType fillBitfieldWithOne
( (
@ -308,475 +201,4 @@ namespace glm
Result &= ~(1 << i); Result &= ~(1 << i);
return Result; return Result;
} }
namespace detail
{
template <typename PARAM, typename RET>
GLM_FUNC_DECL RET bitfieldInterleave(PARAM x, PARAM y);
template <typename PARAM, typename RET>
GLM_FUNC_DECL RET bitfieldInterleave(PARAM x, PARAM y, PARAM z);
template <typename PARAM, typename RET>
GLM_FUNC_DECL RET bitfieldInterleave(PARAM x, PARAM y, PARAM z, PARAM w);
/*
template <typename PARAM, typename RET>
inline RET bitfieldInterleave(PARAM x, PARAM y)
{
RET Result = 0;
for (int i = 0; i < sizeof(PARAM) * 8; i++)
Result |= (x & 1U << i) << i | (y & 1U << i) << (i + 1);
return Result;
}
template <typename PARAM, typename RET>
inline RET bitfieldInterleave(PARAM x, PARAM y, PARAM z)
{
RET Result = 0;
for (RET i = 0; i < sizeof(PARAM) * 8; i++)
{
Result |= ((RET(x) & (RET(1) << i)) << ((i << 1) + 0));
Result |= ((RET(y) & (RET(1) << i)) << ((i << 1) + 1));
Result |= ((RET(z) & (RET(1) << i)) << ((i << 1) + 2));
}
return Result;
}
template <typename PARAM, typename RET>
inline RET bitfieldInterleave(PARAM x, PARAM y, PARAM z, PARAM w)
{
RET Result = 0;
for (int i = 0; i < sizeof(PARAM) * 8; i++)
{
Result |= ((((RET(x) >> i) & RET(1))) << RET((i << 2) + 0));
Result |= ((((RET(y) >> i) & RET(1))) << RET((i << 2) + 1));
Result |= ((((RET(z) >> i) & RET(1))) << RET((i << 2) + 2));
Result |= ((((RET(w) >> i) & RET(1))) << RET((i << 2) + 3));
}
return Result;
}
*/
template <>
GLM_FUNC_QUALIFIER glm::uint16 bitfieldInterleave(glm::uint8 x, glm::uint8 y)
{
glm::uint16 REG1(x);
glm::uint16 REG2(y);
REG1 = ((REG1 << 4) | REG1) & glm::uint16(0x0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint16(0x0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint16(0x3333);
REG2 = ((REG2 << 2) | REG2) & glm::uint16(0x3333);
REG1 = ((REG1 << 1) | REG1) & glm::uint16(0x5555);
REG2 = ((REG2 << 1) | REG2) & glm::uint16(0x5555);
return REG1 | (REG2 << 1);
}
template <>
GLM_FUNC_QUALIFIER glm::uint32 bitfieldInterleave(glm::uint16 x, glm::uint16 y)
{
glm::uint32 REG1(x);
glm::uint32 REG2(y);
REG1 = ((REG1 << 8) | REG1) & glm::uint32(0x00FF00FF);
REG2 = ((REG2 << 8) | REG2) & glm::uint32(0x00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint32(0x0F0F0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint32(0x0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint32(0x33333333);
REG2 = ((REG2 << 2) | REG2) & glm::uint32(0x33333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint32(0x55555555);
REG2 = ((REG2 << 1) | REG2) & glm::uint32(0x55555555);
return REG1 | (REG2 << 1);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
template <>
GLM_FUNC_QUALIFIER glm::uint32 bitfieldInterleave(glm::uint8 x, glm::uint8 y, glm::uint8 z)
{
glm::uint32 REG1(x);
glm::uint32 REG2(y);
glm::uint32 REG3(z);
REG1 = ((REG1 << 16) | REG1) & glm::uint32(0x00FF0000FF0000FF);
REG2 = ((REG2 << 16) | REG2) & glm::uint32(0x00FF0000FF0000FF);
REG3 = ((REG3 << 16) | REG3) & glm::uint32(0x00FF0000FF0000FF);
REG1 = ((REG1 << 8) | REG1) & glm::uint32(0xF00F00F00F00F00F);
REG2 = ((REG2 << 8) | REG2) & glm::uint32(0xF00F00F00F00F00F);
REG3 = ((REG3 << 8) | REG3) & glm::uint32(0xF00F00F00F00F00F);
REG1 = ((REG1 << 4) | REG1) & glm::uint32(0x30C30C30C30C30C3);
REG2 = ((REG2 << 4) | REG2) & glm::uint32(0x30C30C30C30C30C3);
REG3 = ((REG3 << 4) | REG3) & glm::uint32(0x30C30C30C30C30C3);
REG1 = ((REG1 << 2) | REG1) & glm::uint32(0x9249249249249249);
REG2 = ((REG2 << 2) | REG2) & glm::uint32(0x9249249249249249);
REG3 = ((REG3 << 2) | REG3) & glm::uint32(0x9249249249249249);
return REG1 | (REG2 << 1) | (REG3 << 2);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint16 x, glm::uint16 y, glm::uint16 z)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
glm::uint64 REG3(z);
REG1 = ((REG1 << 32) | REG1) & glm::uint64(0xFFFF00000000FFFF);
REG2 = ((REG2 << 32) | REG2) & glm::uint64(0xFFFF00000000FFFF);
REG3 = ((REG3 << 32) | REG3) & glm::uint64(0xFFFF00000000FFFF);
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x00FF0000FF0000FF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x00FF0000FF0000FF);
REG3 = ((REG3 << 16) | REG3) & glm::uint64(0x00FF0000FF0000FF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0xF00F00F00F00F00F);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0xF00F00F00F00F00F);
REG3 = ((REG3 << 8) | REG3) & glm::uint64(0xF00F00F00F00F00F);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x30C30C30C30C30C3);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x30C30C30C30C30C3);
REG3 = ((REG3 << 4) | REG3) & glm::uint64(0x30C30C30C30C30C3);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x9249249249249249);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x9249249249249249);
REG3 = ((REG3 << 2) | REG3) & glm::uint64(0x9249249249249249);
return REG1 | (REG2 << 1) | (REG3 << 2);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint32 x, glm::uint32 y, glm::uint32 z)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
glm::uint64 REG3(z);
REG1 = ((REG1 << 32) | REG1) & glm::uint64(0xFFFF00000000FFFF);
REG2 = ((REG2 << 32) | REG2) & glm::uint64(0xFFFF00000000FFFF);
REG3 = ((REG3 << 32) | REG3) & glm::uint64(0xFFFF00000000FFFF);
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x00FF0000FF0000FF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x00FF0000FF0000FF);
REG3 = ((REG3 << 16) | REG3) & glm::uint64(0x00FF0000FF0000FF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0xF00F00F00F00F00F);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0xF00F00F00F00F00F);
REG3 = ((REG3 << 8) | REG3) & glm::uint64(0xF00F00F00F00F00F);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x30C30C30C30C30C3);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x30C30C30C30C30C3);
REG3 = ((REG3 << 4) | REG3) & glm::uint64(0x30C30C30C30C30C3);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x9249249249249249);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x9249249249249249);
REG3 = ((REG3 << 2) | REG3) & glm::uint64(0x9249249249249249);
return REG1 | (REG2 << 1) | (REG3 << 2);
}
template <>
GLM_FUNC_QUALIFIER glm::uint32 bitfieldInterleave(glm::uint8 x, glm::uint8 y, glm::uint8 z, glm::uint8 w)
{
glm::uint32 REG1(x);
glm::uint32 REG2(y);
glm::uint32 REG3(z);
glm::uint32 REG4(w);
REG1 = ((REG1 << 12) | REG1) & glm::uint32(0x000F000F000F000F);
REG2 = ((REG2 << 12) | REG2) & glm::uint32(0x000F000F000F000F);
REG3 = ((REG3 << 12) | REG3) & glm::uint32(0x000F000F000F000F);
REG4 = ((REG4 << 12) | REG4) & glm::uint32(0x000F000F000F000F);
REG1 = ((REG1 << 6) | REG1) & glm::uint32(0x0303030303030303);
REG2 = ((REG2 << 6) | REG2) & glm::uint32(0x0303030303030303);
REG3 = ((REG3 << 6) | REG3) & glm::uint32(0x0303030303030303);
REG4 = ((REG4 << 6) | REG4) & glm::uint32(0x0303030303030303);
REG1 = ((REG1 << 3) | REG1) & glm::uint32(0x1111111111111111);
REG2 = ((REG2 << 3) | REG2) & glm::uint32(0x1111111111111111);
REG3 = ((REG3 << 3) | REG3) & glm::uint32(0x1111111111111111);
REG4 = ((REG4 << 3) | REG4) & glm::uint32(0x1111111111111111);
return REG1 | (REG2 << 1) | (REG3 << 2) | (REG4 << 3);
}
template <>
GLM_FUNC_QUALIFIER glm::uint64 bitfieldInterleave(glm::uint16 x, glm::uint16 y, glm::uint16 z, glm::uint16 w)
{
glm::uint64 REG1(x);
glm::uint64 REG2(y);
glm::uint64 REG3(z);
glm::uint64 REG4(w);
REG1 = ((REG1 << 24) | REG1) & glm::uint64(0x000000FF000000FF);
REG2 = ((REG2 << 24) | REG2) & glm::uint64(0x000000FF000000FF);
REG3 = ((REG3 << 24) | REG3) & glm::uint64(0x000000FF000000FF);
REG4 = ((REG4 << 24) | REG4) & glm::uint64(0x000000FF000000FF);
REG1 = ((REG1 << 12) | REG1) & glm::uint64(0x000F000F000F000F);
REG2 = ((REG2 << 12) | REG2) & glm::uint64(0x000F000F000F000F);
REG3 = ((REG3 << 12) | REG3) & glm::uint64(0x000F000F000F000F);
REG4 = ((REG4 << 12) | REG4) & glm::uint64(0x000F000F000F000F);
REG1 = ((REG1 << 6) | REG1) & glm::uint64(0x0303030303030303);
REG2 = ((REG2 << 6) | REG2) & glm::uint64(0x0303030303030303);
REG3 = ((REG3 << 6) | REG3) & glm::uint64(0x0303030303030303);
REG4 = ((REG4 << 6) | REG4) & glm::uint64(0x0303030303030303);
REG1 = ((REG1 << 3) | REG1) & glm::uint64(0x1111111111111111);
REG2 = ((REG2 << 3) | REG2) & glm::uint64(0x1111111111111111);
REG3 = ((REG3 << 3) | REG3) & glm::uint64(0x1111111111111111);
REG4 = ((REG4 << 3) | REG4) & glm::uint64(0x1111111111111111);
return REG1 | (REG2 << 1) | (REG3 << 2) | (REG4 << 3);
}
}//namespace detail
GLM_FUNC_QUALIFIER int16 bitfieldInterleave(int8 x, int8 y)
{
union sign8
{
int8 i;
uint8 u;
} sign_x, sign_y;
union sign16
{
int16 i;
uint16 u;
} result;
sign_x.i = x;
sign_y.i = y;
result.u = bitfieldInterleave(sign_x.u, sign_y.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint16 bitfieldInterleave(uint8 x, uint8 y)
{
return detail::bitfieldInterleave<uint8, uint16>(x, y);
}
GLM_FUNC_QUALIFIER int32 bitfieldInterleave(int16 x, int16 y)
{
union sign16
{
int16 i;
uint16 u;
} sign_x, sign_y;
union sign32
{
int32 i;
uint32 u;
} result;
sign_x.i = x;
sign_y.i = y;
result.u = bitfieldInterleave(sign_x.u, sign_y.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint32 bitfieldInterleave(uint16 x, uint16 y)
{
return detail::bitfieldInterleave<uint16, uint32>(x, y);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int32 x, int32 y)
{
union sign32
{
int32 i;
uint32 u;
} sign_x, sign_y;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
result.u = bitfieldInterleave(sign_x.u, sign_y.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint32 x, uint32 y)
{
return detail::bitfieldInterleave<uint32, uint64>(x, y);
}
GLM_FUNC_QUALIFIER int32 bitfieldInterleave(int8 x, int8 y, int8 z)
{
union sign8
{
int8 i;
uint8 u;
} sign_x, sign_y, sign_z;
union sign32
{
int32 i;
uint32 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z)
{
return detail::bitfieldInterleave<uint8, uint32>(x, y, z);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int16 x, int16 y, int16 z)
{
union sign16
{
int16 i;
uint16 u;
} sign_x, sign_y, sign_z;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z)
{
return detail::bitfieldInterleave<uint32, uint64>(x, y, z);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int32 x, int32 y, int32 z)
{
union sign16
{
int32 i;
uint32 u;
} sign_x, sign_y, sign_z;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint32 x, uint32 y, uint32 z)
{
return detail::bitfieldInterleave<uint32, uint64>(x, y, z);
}
GLM_FUNC_QUALIFIER int32 bitfieldInterleave(int8 x, int8 y, int8 z, int8 w)
{
union sign8
{
int8 i;
uint8 u;
} sign_x, sign_y, sign_z, sign_w;
union sign32
{
int32 i;
uint32 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
sign_w.i = w;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u, sign_w.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint32 bitfieldInterleave(uint8 x, uint8 y, uint8 z, uint8 w)
{
return detail::bitfieldInterleave<uint8, uint32>(x, y, z, w);
}
GLM_FUNC_QUALIFIER int64 bitfieldInterleave(int16 x, int16 y, int16 z, int16 w)
{
union sign16
{
int16 i;
uint16 u;
} sign_x, sign_y, sign_z, sign_w;
union sign64
{
int64 i;
uint64 u;
} result;
sign_x.i = x;
sign_y.i = y;
sign_z.i = z;
sign_w.i = w;
result.u = bitfieldInterleave(sign_x.u, sign_y.u, sign_z.u, sign_w.u);
return result.i;
}
GLM_FUNC_QUALIFIER uint64 bitfieldInterleave(uint16 x, uint16 y, uint16 z, uint16 w)
{
return detail::bitfieldInterleave<uint16, uint64>(x, y, z, w);
}
}//namespace glm }//namespace glm

1
readme.txt
View File

@ -77,6 +77,7 @@ GLM 0.9.6.0: 2014-XX-XX
- Added 'uninitialize' to explicitly not initialize a GLM type - Added 'uninitialize' to explicitly not initialize a GLM type
- Added not function (from GLSL specification) on VC12 - Added not function (from GLSL specification) on VC12
- Optimized bitfield operations - Optimized bitfield operations
- Added GTC_bitfield extension, promoted GTX_bit
================================================================================ ================================================================================
GLM 0.9.5.4: 2014-06-21 GLM 0.9.5.4: 2014-06-21

1
test/gtc/CMakeLists.txt
View File

@ -1,3 +1,4 @@
glmCreateTestGTC(gtc_bitfield)
glmCreateTestGTC(gtc_constants) glmCreateTestGTC(gtc_constants)
glmCreateTestGTC(gtc_epsilon) glmCreateTestGTC(gtc_epsilon)
glmCreateTestGTC(gtc_matrix_access) glmCreateTestGTC(gtc_matrix_access)

512
test/gtc/gtc_bitfield.cpp Normal file
View File

@ -0,0 +1,512 @@
///////////////////////////////////////////////////////////////////////////////////////////////////
// OpenGL Mathematics Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net)
///////////////////////////////////////////////////////////////////////////////////////////////////
// Created : 2014-10-25
// Updated : 2014-10-25
// Licence : This source is under MIT licence
// File : test/gtc/bitfield.cpp
///////////////////////////////////////////////////////////////////////////////////////////////////
#include <glm/gtc/bitfield.hpp>
#include <glm/gtc/type_precision.hpp>
//#include <glm/vec2.hpp>
#include <ctime>
#include <cstdio>
#include <vector>
namespace mask
{
inline int mask_mix(int Bits)
{
return Bits >= 32 ? 0xffffffff : (static_cast<int>(1) << Bits) - static_cast<int>(1);
}
inline int mask_loop(int Bits)
{
int Mask = 0;
for(int Bit = 0; Bit < Bits; ++Bit)
Mask |= (static_cast<int>(1) << Bit);
return Mask;
}
int perf()
{
int const Count = 100000000;
std::clock_t Timestamp1 = std::clock();
{
std::vector<int> Mask;
Mask.resize(Count);
for(int i = 0; i < Count; ++i)
Mask[i] = mask_mix(i % 32);
}
std::clock_t Timestamp2 = std::clock();
{
std::vector<int> Mask;
Mask.resize(Count);
for(int i = 0; i < Count; ++i)
Mask[i] = mask_loop(i % 32);
}
std::clock_t Timestamp3 = std::clock();
{
std::vector<int> Mask;
Mask.resize(Count);
for(int i = 0; i < Count; ++i)
Mask[i] = glm::mask(i % 32);
}
std::clock_t Timestamp4 = std::clock();
std::clock_t TimeMix = Timestamp2 - Timestamp1;
std::clock_t TimeLoop = Timestamp3 - Timestamp2;
std::clock_t TimeDefault = Timestamp4 - Timestamp3;
printf("mask[mix]: %d\n", TimeMix);
printf("mask[loop]: %d\n", TimeLoop);
printf("mask[default]: %d\n", TimeDefault);
return TimeDefault < TimeLoop ? 0 : 1;
}
}//namespace mask
namespace bitfieldInterleave3
{
template <typename PARAM, typename RET>
inline RET refBitfieldInterleave(PARAM x, PARAM y, PARAM z)
{
RET Result = 0;
for(RET i = 0; i < sizeof(PARAM) * 8; ++i)
{
Result |= ((RET(x) & (RET(1U) << i)) << ((i << 1) + 0));
Result |= ((RET(y) & (RET(1U) << i)) << ((i << 1) + 1));
Result |= ((RET(z) & (RET(1U) << i)) << ((i << 1) + 2));
}
return Result;
}
int test()
{
int Error(0);
glm::uint16 x_max = 1 << 11;
glm::uint16 y_max = 1 << 11;
glm::uint16 z_max = 1 << 11;
for(glm::uint16 z = 0; z < z_max; z += 27)
for(glm::uint16 y = 0; y < y_max; y += 27)
for(glm::uint16 x = 0; x < x_max; x += 27)
{
glm::uint64 ResultA = refBitfieldInterleave<glm::uint16, glm::uint64>(x, y, z);
glm::uint64 ResultB = glm::bitfieldInterleave(x, y, z);
Error += ResultA == ResultB ? 0 : 1;
}
return Error;
}
}
namespace bitfieldInterleave4
{
template <typename PARAM, typename RET>
inline RET loopBitfieldInterleave(PARAM x, PARAM y, PARAM z, PARAM w)
{
RET const v[4] = {x, y, z, w};
RET Result = 0;
for(RET i = 0; i < sizeof(PARAM) * 8; i++)
{
Result |= ((((v[0] >> i) & 1U)) << ((i << 2) + 0));
Result |= ((((v[1] >> i) & 1U)) << ((i << 2) + 1));
Result |= ((((v[2] >> i) & 1U)) << ((i << 2) + 2));
Result |= ((((v[3] >> i) & 1U)) << ((i << 2) + 3));
}
return Result;
}
int test()
{
int Error(0);
glm::uint16 x_max = 1 << 11;
glm::uint16 y_max = 1 << 11;
glm::uint16 z_max = 1 << 11;
glm::uint16 w_max = 1 << 11;
for(glm::uint16 w = 0; w < w_max; w += 27)
for(glm::uint16 z = 0; z < z_max; z += 27)
for(glm::uint16 y = 0; y < y_max; y += 27)
for(glm::uint16 x = 0; x < x_max; x += 27)
{
glm::uint64 ResultA = loopBitfieldInterleave<glm::uint16, glm::uint64>(x, y, z, w);
glm::uint64 ResultB = glm::bitfieldInterleave(x, y, z, w);
Error += ResultA == ResultB ? 0 : 1;
}
return Error;
}
}
namespace bitfieldInterleave
{
inline glm::uint64 fastBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1;
glm::uint64 REG2;
REG1 = x;
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = y;
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
inline glm::uint64 interleaveBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1;
glm::uint64 REG2;
REG1 = x;
REG2 = y;
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
inline glm::uint64 loopBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
static glm::uint64 const Mask[5] =
{
0x5555555555555555,
0x3333333333333333,
0x0F0F0F0F0F0F0F0F,
0x00FF00FF00FF00FF,
0x0000FFFF0000FFFF
};
glm::uint64 REG1 = x;
glm::uint64 REG2 = y;
for(int i = 4; i >= 0; --i)
{
REG1 = ((REG1 << (1 << i)) | REG1) & Mask[i];
REG2 = ((REG2 << (1 << i)) | REG2) & Mask[i];
}
return REG1 | (REG2 << 1);
}
#if(GLM_ARCH != GLM_ARCH_PURE)
inline glm::uint64 sseBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
GLM_ALIGN(16) glm::uint32 const Array[4] = {x, 0, y, 0};
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
Reg1 = _mm_load_si128((__m128i*)Array);
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
GLM_ALIGN(16) glm::uint64 Result[2];
_mm_store_si128((__m128i*)Result, Reg1);
return Result[0];
}
inline glm::uint64 sseUnalignedBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint32 const Array[4] = {x, 0, y, 0};
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
Reg1 = _mm_loadu_si128((__m128i*)Array);
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
glm::uint64 Result[2];
_mm_storeu_si128((__m128i*)Result, Reg1);
return Result[0];
}
#endif//(GLM_ARCH != GLM_ARCH_PURE)
int test()
{
glm::uint32 x_max = 1 << 11;
glm::uint32 y_max = 1 << 10;
// ALU
std::vector<glm::uint64> Data(x_max * y_max);
std::vector<glm::u32vec2> Param(x_max * y_max);
for(glm::uint32 i = 0; i < Param.size(); ++i)
Param[i] = glm::u32vec2(i % x_max, i / y_max);
{
for(glm::uint32 y = 0; y < (1 << 10); ++y)
for(glm::uint32 x = 0; x < (1 << 10); ++x)
{
glm::uint64 A = glm::bitfieldInterleave(x, y);
glm::uint64 B = fastBitfieldInterleave(x, y);
glm::uint64 C = loopBitfieldInterleave(x, y);
glm::uint64 D = interleaveBitfieldInterleave(x, y);
assert(A == B);
assert(A == C);
assert(A == D);
# if(GLM_ARCH != GLM_ARCH_PURE)
glm::uint64 E = sseBitfieldInterleave(x, y);
glm::uint64 F = sseUnalignedBitfieldInterleave(x, y);
assert(A == E);
assert(A == F);
__m128i G = glm::detail::_mm_bit_interleave_si128(_mm_set_epi32(0, y, 0, x));
glm::uint64 Result[2];
_mm_storeu_si128((__m128i*)Result, G);
assert(A == Result[0]);
# endif//(GLM_ARCH != GLM_ARCH_PURE)
}
}
{
for(glm::uint8 y = 0; y < 127; ++y)
for(glm::uint8 x = 0; x < 127; ++x)
{
glm::uint64 A(glm::bitfieldInterleave(glm::uint8(x), glm::uint8(y)));
glm::uint64 B(glm::bitfieldInterleave(glm::uint16(x), glm::uint16(y)));
glm::uint64 C(glm::bitfieldInterleave(glm::uint32(x), glm::uint32(y)));
glm::int64 D(glm::bitfieldInterleave(glm::int8(x), glm::int8(y)));
glm::int64 E(glm::bitfieldInterleave(glm::int16(x), glm::int16(y)));
glm::int64 F(glm::bitfieldInterleave(glm::int32(x), glm::int32(y)));
assert(D == E);
assert(D == F);
}
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = glm::bitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::printf("glm::bitfieldInterleave Time %d clocks\n", Time);
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = fastBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::printf("fastBitfieldInterleave Time %d clocks\n", Time);
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = loopBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::printf("loopBitfieldInterleave Time %d clocks\n", Time);
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = interleaveBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::printf("interleaveBitfieldInterleave Time %d clocks\n", Time);
}
# if(GLM_ARCH != GLM_ARCH_PURE)
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = sseBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::printf("sseBitfieldInterleave Time %d clocks\n", Time);
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = sseUnalignedBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::printf("sseUnalignedBitfieldInterleave Time %d clocks\n", Time);
}
# endif//(GLM_ARCH != GLM_ARCH_PURE)
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = glm::bitfieldInterleave(Param[i].x, Param[i].y, Param[i].x);
std::clock_t Time = std::clock() - LastTime;
std::printf("glm::detail::bitfieldInterleave Time %d clocks\n", Time);
}
# if(GLM_ARCH != GLM_ARCH_PURE)
{
// SIMD
std::vector<__m128i> SimdData(x_max * y_max);
std::vector<__m128i> SimdParam(x_max * y_max);
for(int i = 0; i < SimdParam.size(); ++i)
SimdParam[i] = _mm_set_epi32(i % x_max, 0, i / y_max, 0);
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < SimdData.size(); ++i)
SimdData[i] = glm::detail::_mm_bit_interleave_si128(SimdParam[i]);
std::clock_t Time = std::clock() - LastTime;
std::printf("_mm_bit_interleave_si128 Time %d clocks\n", Time);
}
# endif//(GLM_ARCH != GLM_ARCH_PURE)
return 0;
}
}
int main()
{
int Error(0);
Error += ::mask::perf();
Error += ::bitfieldInterleave3::test();
Error += ::bitfieldInterleave4::test();
Error += ::bitfieldInterleave::test();
//Error += ::bitRevert::test();
return Error;
}

491
test/gtx/gtx_bit.cpp
View File

@ -14,9 +14,9 @@
# include <glm/detail/intrinsic_integer.hpp> # include <glm/detail/intrinsic_integer.hpp>
#endif #endif
#include <iostream>
#include <vector> #include <vector>
#include <ctime> #include <ctime>
#include <cstdio>
enum result enum result
{ {
@ -70,7 +70,7 @@ namespace bitRevert
else if(Data64[i].Result == FAIL && !Compare) else if(Data64[i].Result == FAIL && !Compare)
continue; continue;
std::cout << "glm::extractfield test fail on test " << i << std::endl; printf("glm::extractfield test fail on test %d\n", i);
return 1; return 1;
} }
@ -78,497 +78,10 @@ namespace bitRevert
} }
}//bitRevert }//bitRevert
namespace bitfieldInterleave
{
inline glm::uint64 fastBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1;
glm::uint64 REG2;
REG1 = x;
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = y;
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
inline glm::uint64 interleaveBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint64 REG1;
glm::uint64 REG2;
REG1 = x;
REG2 = y;
REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
return REG1 | (REG2 << 1);
}
inline glm::uint64 loopBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
static glm::uint64 const Mask[5] =
{
0x5555555555555555,
0x3333333333333333,
0x0F0F0F0F0F0F0F0F,
0x00FF00FF00FF00FF,
0x0000FFFF0000FFFF
};
glm::uint64 REG1 = x;
glm::uint64 REG2 = y;
for(int i = 4; i >= 0; --i)
{
REG1 = ((REG1 << (1 << i)) | REG1) & Mask[i];
REG2 = ((REG2 << (1 << i)) | REG2) & Mask[i];
}
return REG1 | (REG2 << 1);
}
#if(GLM_ARCH != GLM_ARCH_PURE)
inline glm::uint64 sseBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
GLM_ALIGN(16) glm::uint32 const Array[4] = {x, 0, y, 0};
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
Reg1 = _mm_load_si128((__m128i*)Array);
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
GLM_ALIGN(16) glm::uint64 Result[2];
_mm_store_si128((__m128i*)Result, Reg1);
return Result[0];
}
inline glm::uint64 sseUnalignedBitfieldInterleave(glm::uint32 x, glm::uint32 y)
{
glm::uint32 const Array[4] = {x, 0, y, 0};
__m128i const Mask4 = _mm_set1_epi32(0x0000FFFF);
__m128i const Mask3 = _mm_set1_epi32(0x00FF00FF);
__m128i const Mask2 = _mm_set1_epi32(0x0F0F0F0F);
__m128i const Mask1 = _mm_set1_epi32(0x33333333);
__m128i const Mask0 = _mm_set1_epi32(0x55555555);
__m128i Reg1;
__m128i Reg2;
// REG1 = x;
// REG2 = y;
Reg1 = _mm_loadu_si128((__m128i*)Array);
//REG1 = ((REG1 << 16) | REG1) & glm::uint64(0x0000FFFF0000FFFF);
//REG2 = ((REG2 << 16) | REG2) & glm::uint64(0x0000FFFF0000FFFF);
Reg2 = _mm_slli_si128(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask4);
//REG1 = ((REG1 << 8) | REG1) & glm::uint64(0x00FF00FF00FF00FF);
//REG2 = ((REG2 << 8) | REG2) & glm::uint64(0x00FF00FF00FF00FF);
Reg2 = _mm_slli_si128(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask3);
//REG1 = ((REG1 << 4) | REG1) & glm::uint64(0x0F0F0F0F0F0F0F0F);
//REG2 = ((REG2 << 4) | REG2) & glm::uint64(0x0F0F0F0F0F0F0F0F);
Reg2 = _mm_slli_epi32(Reg1, 4);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask2);
//REG1 = ((REG1 << 2) | REG1) & glm::uint64(0x3333333333333333);
//REG2 = ((REG2 << 2) | REG2) & glm::uint64(0x3333333333333333);
Reg2 = _mm_slli_epi32(Reg1, 2);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask1);
//REG1 = ((REG1 << 1) | REG1) & glm::uint64(0x5555555555555555);
//REG2 = ((REG2 << 1) | REG2) & glm::uint64(0x5555555555555555);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg1 = _mm_or_si128(Reg2, Reg1);
Reg1 = _mm_and_si128(Reg1, Mask0);
//return REG1 | (REG2 << 1);
Reg2 = _mm_slli_epi32(Reg1, 1);
Reg2 = _mm_srli_si128(Reg2, 8);
Reg1 = _mm_or_si128(Reg1, Reg2);
glm::uint64 Result[2];
_mm_storeu_si128((__m128i*)Result, Reg1);
return Result[0];
}
#endif//(GLM_ARCH != GLM_ARCH_PURE)
int test()
{
glm::uint32 x_max = 1 << 11;
glm::uint32 y_max = 1 << 10;
// ALU
std::vector<glm::uint64> Data(x_max * y_max);
std::vector<glm::u32vec2> Param(x_max * y_max);
for(glm::uint32 i = 0; i < Param.size(); ++i)
Param[i] = glm::u32vec2(i % x_max, i / y_max);
{
for(glm::uint32 y = 0; y < (1 << 10); ++y)
for(glm::uint32 x = 0; x < (1 << 10); ++x)
{
glm::uint64 A = glm::bitfieldInterleave(x, y);
glm::uint64 B = fastBitfieldInterleave(x, y);
glm::uint64 C = loopBitfieldInterleave(x, y);
glm::uint64 D = interleaveBitfieldInterleave(x, y);
assert(A == B);
assert(A == C);
assert(A == D);
# if(GLM_ARCH != GLM_ARCH_PURE)
glm::uint64 E = sseBitfieldInterleave(x, y);
glm::uint64 F = sseUnalignedBitfieldInterleave(x, y);
assert(A == E);
assert(A == F);
__m128i G = glm::detail::_mm_bit_interleave_si128(_mm_set_epi32(0, y, 0, x));
glm::uint64 Result[2];
_mm_storeu_si128((__m128i*)Result, G);
assert(A == Result[0]);
# endif//(GLM_ARCH != GLM_ARCH_PURE)
}
}
{
for(glm::uint8 y = 0; y < 127; ++y)
for(glm::uint8 x = 0; x < 127; ++x)
{
glm::uint64 A(glm::bitfieldInterleave(glm::uint8(x), glm::uint8(y)));
glm::uint64 B(glm::bitfieldInterleave(glm::uint16(x), glm::uint16(y)));
glm::uint64 C(glm::bitfieldInterleave(glm::uint32(x), glm::uint32(y)));
glm::int64 D(glm::bitfieldInterleave(glm::int8(x), glm::int8(y)));
glm::int64 E(glm::bitfieldInterleave(glm::int16(x), glm::int16(y)));
glm::int64 F(glm::bitfieldInterleave(glm::int32(x), glm::int32(y)));
assert(D == E);
assert(D == F);
}
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = glm::bitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "glm::bitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = fastBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "fastBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = loopBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "loopBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = interleaveBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "interleaveBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
# if(GLM_ARCH != GLM_ARCH_PURE)
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = sseBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "sseBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = sseUnalignedBitfieldInterleave(Param[i].x, Param[i].y);
std::clock_t Time = std::clock() - LastTime;
std::cout << "sseUnalignedBitfieldInterleave Time " << Time << " clocks" << std::endl;
}
# endif//(GLM_ARCH != GLM_ARCH_PURE)
{
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < Data.size(); ++i)
Data[i] = glm::bitfieldInterleave(Param[i].x, Param[i].y, Param[i].x);
std::clock_t Time = std::clock() - LastTime;
std::cout << "glm::detail::bitfieldInterleave Time " << Time << " clocks" << std::endl;
}
# if(GLM_ARCH != GLM_ARCH_PURE)
{
// SIMD
std::vector<__m128i> SimdData(x_max * y_max);
std::vector<__m128i> SimdParam(x_max * y_max);
for(int i = 0; i < SimdParam.size(); ++i)
SimdParam[i] = _mm_set_epi32(i % x_max, 0, i / y_max, 0);
std::clock_t LastTime = std::clock();
for(std::size_t i = 0; i < SimdData.size(); ++i)
SimdData[i] = glm::detail::_mm_bit_interleave_si128(SimdParam[i]);
std::clock_t Time = std::clock() - LastTime;
std::cout << "_mm_bit_interleave_si128 Time " << Time << " clocks" << std::endl;
}
# endif//(GLM_ARCH != GLM_ARCH_PURE)
return 0;
}
}
namespace bitfieldInterleave3
{
template <typename PARAM, typename RET>
inline RET refBitfieldInterleave(PARAM x, PARAM y, PARAM z)
{
RET Result = 0;
for(RET i = 0; i < sizeof(PARAM) * 8; ++i)
{
Result |= ((RET(x) & (RET(1U) << i)) << ((i << 1) + 0));
Result |= ((RET(y) & (RET(1U) << i)) << ((i << 1) + 1));
Result |= ((RET(z) & (RET(1U) << i)) << ((i << 1) + 2));
}
return Result;
}
int test()
{
int Error(0);
glm::uint16 x_max = 1 << 11;
glm::uint16 y_max = 1 << 11;
glm::uint16 z_max = 1 << 11;
for(glm::uint16 z = 0; z < z_max; z += 27)
for(glm::uint16 y = 0; y < y_max; y += 27)
for(glm::uint16 x = 0; x < x_max; x += 27)
{
glm::uint64 ResultA = refBitfieldInterleave<glm::uint16, glm::uint64>(x, y, z);
glm::uint64 ResultB = glm::bitfieldInterleave(x, y, z);
Error += ResultA == ResultB ? 0 : 1;
}
return Error;
}
}
namespace bitfieldInterleave4
{
template <typename PARAM, typename RET>
inline RET loopBitfieldInterleave(PARAM x, PARAM y, PARAM z, PARAM w)
{
RET const v[4] = {x, y, z, w};
RET Result = 0;
for(RET i = 0; i < sizeof(PARAM) * 8; i++)
{
Result |= ((((v[0] >> i) & 1U)) << ((i << 2) + 0));
Result |= ((((v[1] >> i) & 1U)) << ((i << 2) + 1));
Result |= ((((v[2] >> i) & 1U)) << ((i << 2) + 2));
Result |= ((((v[3] >> i) & 1U)) << ((i << 2) + 3));
}
return Result;
}
int test()
{
int Error(0);
glm::uint16 x_max = 1 << 11;
glm::uint16 y_max = 1 << 11;
glm::uint16 z_max = 1 << 11;
glm::uint16 w_max = 1 << 11;
for(glm::uint16 w = 0; w < w_max; w += 27)
for(glm::uint16 z = 0; z < z_max; z += 27)
for(glm::uint16 y = 0; y < y_max; y += 27)
for(glm::uint16 x = 0; x < x_max; x += 27)
{
glm::uint64 ResultA = loopBitfieldInterleave<glm::uint16, glm::uint64>(x, y, z, w);
glm::uint64 ResultB = glm::bitfieldInterleave(x, y, z, w);
Error += ResultA == ResultB ? 0 : 1;
}
return Error;
}
}
namespace mask
{
inline int mask_mix(int Bits)
{
return Bits >= 32 ? 0xffffffff : (static_cast<int>(1) << Bits) - static_cast<int>(1);
}
inline int mask_loop(int Bits)
{
int Mask = 0;
for(int Bit = 0; Bit < Bits; ++Bit)
Mask |= (static_cast<int>(1) << Bit);
return Mask;
}
int perf()
{
int const Count = 100000000;
std::clock_t Timestamp1 = std::clock();
{
std::vector<int> Mask;
Mask.resize(Count);
for(int i = 0; i < Count; ++i)
Mask[i] = mask_mix(i % 32);
}
std::clock_t Timestamp2 = std::clock();
{
std::vector<int> Mask;
Mask.resize(Count);
for(int i = 0; i < Count; ++i)
Mask[i] = mask_loop(i % 32);
}
std::clock_t Timestamp3 = std::clock();
{
std::vector<int> Mask;
Mask.resize(Count);
for(int i = 0; i < Count; ++i)
Mask[i] = glm::mask(i % 32);
}
std::clock_t Timestamp4 = std::clock();
std::clock_t TimeMix = Timestamp2 - Timestamp1;
std::clock_t TimeLoop = Timestamp3 - Timestamp2;
std::clock_t TimeDefault = Timestamp4 - Timestamp3;
printf("mask[mix]: %d\n", TimeMix);
printf("mask[loop]: %d\n", TimeLoop);
printf("mask[default]: %d\n", TimeDefault);
return TimeDefault < TimeLoop ? 0 : 1;
}
}//namespace mask
int main() int main()
{ {
int Error(0); int Error(0);
Error += ::mask::perf();
Error += ::bitfieldInterleave3::test();
Error += ::bitfieldInterleave4::test();
Error += ::bitfieldInterleave::test();
Error += ::bitRevert::test(); Error += ::bitRevert::test();
return Error; return Error;