mirror/glm
1
0
Fork 0
mirror of https://github.com/g-truc/glm.git synced 2024-11-30 03:44:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fixed more typos

Browse Source
This commit is contained in:
Christophe Riccio 2011-06-02 13:39:30 +01:00
parent f8473154eb
commit f73b0c5b80
17 changed files with 454 additions and 487 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
glm/core/func_common.hpp
View File

@ -12,12 +12,11 @@
#include "_fixes.hpp"
namespace glm
namespace glm{
namespace core{
namespace function{
namespace common //!< Define common functions from Section 8.3 of GLSL 1.30.8 specification. Included in glm namespace.
{
namespace core{
namespace function{
namespace common{ //!< Define common functions from Section 8.3 of GLSL 1.30.8 specification. Included in glm namespace.
/// \addtogroup core_funcs
///@{
@ -325,10 +324,9 @@ namespace glm
genType ldexp(genType const & x, genIType const & exp);
///@}
}//namespace common
}//namespace function
}//namespace core
}//namespace common
}//namespace function
}//namespace core
using namespace core::function::common;
}//namespace glm

18
glm/core/func_exponential.hpp
View File

@ -10,13 +10,11 @@
#ifndef glm_core_func_exponential
#define glm_core_func_exponential
namespace glm
namespace glm{
namespace core{
namespace function{
namespace exponential //!< Define all exponential functions from Section 8.2 of GLSL 1.30.8 specification. Included in glm namespace.
{
namespace core{
namespace function{
//! Define all exponential functions from Section 8.2 of GLSL 1.30.8 specification. Included in glm namespace.
namespace exponential{
/// \addtogroup core_funcs
///@{
@ -73,11 +71,9 @@ namespace glm
genType inversesqrt(genType const & x);
///@}
}//namespace exponential
}//namespace function
}//namespace core
}//namespace exponential
}//namespace function
}//namespace core
using namespace core::function::exponential;
}//namespace glm

21
glm/core/func_geometric.hpp
View File

@ -10,14 +10,13 @@
#ifndef glm_core_func_geometric
#define glm_core_func_geometric
namespace glm
namespace glm{
namespace core{
namespace function{
namespace geometric //!< Define all geometric functions from Section 8.4 of GLSL 1.30.8 specification. Included in glm namespace.
{
namespace core{
namespace function{
namespace geometric{ //!< Define all geometric functions from Section 8.4 of GLSL 1.30.8 specification. Included in glm namespace.
/// \addtogroup core_funcs
///@{
/// @{
//! Returns the length of x, i.e., sqrt(x * x).
//!
@ -94,12 +93,10 @@ namespace glm
genType const & N,
typename genType::value_type const & eta);
///@}
}//namespace geometric
}//namespace function
}//namespace core
/// @}
}//namespace geometric
}//namespace function
}//namespace core
using namespace core::function::geometric;
}//namespace glm

250
glm/core/func_integer.hpp
View File

@ -10,145 +10,141 @@
#ifndef glm_core_func_integer
#define glm_core_func_integer
namespace glm
namespace glm{
namespace core{
namespace function{
namespace integer //!< Define integer functions from Section 8.8 of GLSL 4.00.8 specification.
{
namespace core{
namespace function{
//! Define integer functions from Section 8.8 of GLSL 4.00.8 specification.
namespace integer{
/// \addtogroup core_funcs
/// @{
/// \addtogroup core_funcs
///@{
//! Adds 32-bit unsigned integer x and y, returning the sum
//! modulo pow(2, 32). The value carry is set to 0 if the sum was
//! less than pow(2, 32), or to 1 otherwise.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/uaddCarry.xml">GLSL uaddCarry man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genUType>
genUType uaddCarry(
genUType const & x,
genUType const & y,
genUType & carry);
//! Adds 32-bit unsigned integer x and y, returning the sum
//! modulo pow(2, 32). The value carry is set to 0 if the sum was
//! less than pow(2, 32), or to 1 otherwise.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/uaddCarry.xml">GLSL uaddCarry man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genUType>
genUType uaddCarry(
genUType const & x,
genUType const & y,
genUType & carry);
//! Subtracts the 32-bit unsigned integer y from x, returning
//! the difference if non-negative, or pow(2, 32) plus the difference
//! otherwise. The value borrow is set to 0 if x >= y, or to 1 otherwise.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/usubBorrow.xml">GLSL usubBorrow man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genUType>
genUType usubBorrow(
genUType const & x,
genUType const & y,
genUType & borrow);
//! Subtracts the 32-bit unsigned integer y from x, returning
//! the difference if non-negative, or pow(2, 32) plus the difference
//! otherwise. The value borrow is set to 0 if x >= y, or to 1 otherwise.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/usubBorrow.xml">GLSL usubBorrow man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genUType>
genUType usubBorrow(
genUType const & x,
genUType const & y,
genUType & borrow);
//! Multiplies 32-bit integers x and y, producing a 64-bit
//! result. The 32 least-significant bits are returned in lsb.
//! The 32 most-significant bits are returned in msb.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/umulExtended.xml">GLSL umulExtended man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genUType>
void umulExtended(
genUType const & x,
genUType const & y,
genUType & msb,
genUType & lsb);
//! Multiplies 32-bit integers x and y, producing a 64-bit
//! result. The 32 least-significant bits are returned in lsb.
//! The 32 most-significant bits are returned in msb.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/umulExtended.xml">GLSL umulExtended man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genUType>
void umulExtended(
genUType const & x,
genUType const & y,
genUType & msb,
genUType & lsb);
//! Multiplies 32-bit integers x and y, producing a 64-bit
//! result. The 32 least-significant bits are returned in lsb.
//! The 32 most-significant bits are returned in msb.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/imulExtended.xml">GLSL imulExtended man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIType>
void imulExtended(
genIType const & x,
genIType const & y,
genIType & msb,
genIType & lsb);
//! Multiplies 32-bit integers x and y, producing a 64-bit
//! result. The 32 least-significant bits are returned in lsb.
//! The 32 most-significant bits are returned in msb.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/imulExtended.xml">GLSL imulExtended man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIType>
void imulExtended(
genIType const & x,
genIType const & y,
genIType & msb,
genIType & lsb);
//! Extracts bits [offset, offset + bits - 1] from value,
//! returning them in the least significant bits of the result.
//! For unsigned data types, the most significant bits of the
//! result will be set to zero. For signed data types, the
//! most significant bits will be set to the value of bit offset + base – 1.
//!
//! If bits is zero, the result will be zero. The result will be
//! undefined if offset or bits is negative, or if the sum of
//! offset and bits is greater than the number of bits used
//! to store the operand.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldExtract.xml">GLSL bitfieldExtract man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIUType>
genIUType bitfieldExtract(
genIUType const & Value,
int const & Offset,
int const & Bits);
//! Extracts bits [offset, offset + bits - 1] from value,
//! returning them in the least significant bits of the result.
//! For unsigned data types, the most significant bits of the
//! result will be set to zero. For signed data types, the
//! most significant bits will be set to the value of bit offset + base – 1.
//!
//! If bits is zero, the result will be zero. The result will be
//! undefined if offset or bits is negative, or if the sum of
//! offset and bits is greater than the number of bits used
//! to store the operand.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldExtract.xml">GLSL bitfieldExtract man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIUType>
genIUType bitfieldExtract(
genIUType const & Value,
int const & Offset,
int const & Bits);
//! Returns the insertion the bits least-significant bits of insert into base.
//!
//! The result will have bits [offset, offset + bits - 1] taken
//! from bits [0, bits – 1] of insert, and all other bits taken
//! directly from the corresponding bits of base. If bits is
//! zero, the result will simply be base. The result will be
//! undefined if offset or bits is negative, or if the sum of
//! offset and bits is greater than the number of bits used to
//! store the operand.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldInsert.xml">GLSL bitfieldInsert man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIUType>
genIUType bitfieldInsert(
genIUType const & Base,
genIUType const & Insert,
int const & Offset,
int const & Bits);
//! Returns the insertion the bits least-significant bits of insert into base.
//!
//! The result will have bits [offset, offset + bits - 1] taken
//! from bits [0, bits – 1] of insert, and all other bits taken
//! directly from the corresponding bits of base. If bits is
//! zero, the result will simply be base. The result will be
//! undefined if offset or bits is negative, or if the sum of
//! offset and bits is greater than the number of bits used to
//! store the operand.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldInsert.xml">GLSL bitfieldInsert man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIUType>
genIUType bitfieldInsert(
genIUType const & Base,
genIUType const & Insert,
int const & Offset,
int const & Bits);
//! Returns the reversal of the bits of value.
//! The bit numbered n of the result will be taken from bit (bits - 1) - n of value,
//! where bits is the total number of bits used to represent value.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldReverse.xml">GLSL bitfieldReverse man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIUType>
genIUType bitfieldReverse(genIUType const & value);
//! Returns the reversal of the bits of value.
//! The bit numbered n of the result will be taken from bit (bits - 1) - n of value,
//! where bits is the total number of bits used to represent value.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldReverse.xml">GLSL bitfieldReverse man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename genIUType>
genIUType bitfieldReverse(genIUType const & value);
//! Returns the number of bits set to 1 in the binary representation of value.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitCount.xml">GLSL bitCount man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename T, template <typename> class C>
typename C<T>::signed_type bitCount(C<T> const & Value);
//! Returns the number of bits set to 1 in the binary representation of value.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitCount.xml">GLSL bitCount man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename T, template <typename> class C>
typename C<T>::signed_type bitCount(C<T> const & Value);
//! Returns the bit number of the least significant bit set to
//! 1 in the binary representation of value.
//! If value is zero, -1 will be returned.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findLSB.xml">GLSL findLSB man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename T, template <typename> class C>
typename C<T>::signed_type findLSB(C<T> const & Value);
//! Returns the bit number of the least significant bit set to
//! 1 in the binary representation of value.
//! If value is zero, -1 will be returned.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findLSB.xml">GLSL findLSB man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename T, template <typename> class C>
typename C<T>::signed_type findLSB(C<T> const & Value);
//! Returns the bit number of the most significant bit in the binary representation of value.
//! For positive integers, the result will be the bit number of the most significant bit set to 1.
//! For negative integers, the result will be the bit number of the most significant
//! bit set to 0. For a value of zero or negative one, -1 will be returned.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findMSB.xml">GLSL findMSB man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename T, template <typename> class C>
typename C<T>::signed_type findMSB(C<T> const & Value);
///@}
}//namespace integer
}//namespace function
}//namespace core
//! Returns the bit number of the most significant bit in the binary representation of value.
//! For positive integers, the result will be the bit number of the most significant bit set to 1.
//! For negative integers, the result will be the bit number of the most significant
//! bit set to 0. For a value of zero or negative one, -1 will be returned.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findMSB.xml">GLSL findMSB man page</a>
//! \li GLSL 4.00.08 specification, section 8.8
template <typename T, template <typename> class C>
typename C<T>::signed_type findMSB(C<T> const & Value);
/// @}
}//namespace integer
}//namespace function
}//namespace core
using namespace core::function::integer;
}//namespace glm

22
glm/core/func_matrix.hpp
View File

@ -10,15 +10,13 @@
#ifndef glm_core_func_matrix
#define glm_core_func_matrix
namespace glm
namespace glm{
namespace core{
namespace function{
namespace matrix //!< Define all matrix functions from Section 8.5 of GLSL 1.30.8 specification. Included in glm namespace.
{
namespace core{
namespace function{
//! Define all matrix functions from Section 8.5 of GLSL 1.30.8 specification. Included in glm namespace.
namespace matrix{
/// \addtogroup core_funcs
///@{
/// @{
//! Multiply matrix x by matrix y component-wise, i.e.,
//! result[i][j] is the scalar product of x[i][j] and y[i][j].
@ -97,12 +95,10 @@ namespace glm
detail::tmat4x4<T> inverse(
detail::tmat4x4<T> const & m);
///@}
}//namespace matrix
}//namespace function
}//namespace core
/// @}
}//namespace matrix
}//namespace function
}//namespace core
using namespace core::function::matrix;
}//namespace glm

22
glm/core/func_noise.hpp
View File

@ -10,15 +10,13 @@
#ifndef glm_core_func_noise
#define glm_core_func_noise
namespace glm
namespace glm{
namespace core{
namespace function{
namespace noise //< Define all noise functions from Section 8.9 of GLSL 1.30.8 specification. Included in glm namespace.
{
namespace core{
namespace function{
// Define all noise functions from Section 8.9 of GLSL 1.30.8 specification. Included in glm namespace.
namespace noise{
/// \addtogroup core_funcs
///@{
/// @{
//! Returns a 1D noise value based on the input value x.
//!
@ -48,12 +46,10 @@ namespace glm
template <typename genType>
detail::tvec4<typename genType::value_type> noise4(genType const & x);
///@}
}//namespace noise
}//namespace function
}//namespace core
/// @}
}//namespace noise
}//namespace function
}//namespace core
using namespace core::function::noise;
}//namespace glm

202
glm/core/func_packing.hpp
View File

@ -10,119 +10,115 @@
#ifndef glm_core_func_packing
#define glm_core_func_packing
namespace glm
namespace glm{
namespace core{
namespace function{
namespace packing //!< Define packing functions from section 8.4 floating-point pack and unpack functions of GLSL 4.00.8 specification
{
namespace core{
namespace function{
//! Define packing functions from section 8.4 floating-point pack and unpack functions of GLSL 4.00.8 specification
namespace packing
{
/// \addtogroup core_funcs
///@{
/// \addtogroup core_funcs
///@{
//! First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values.
//! Then, the results are packed into the returned 32-bit unsigned integer.
//!
//! The conversion for component c of v to fixed point is done as follows:
//! packUnorm2x16: round(clamp(c, 0, +1) * 65535.0)
//!
//! The first component of the vector will be written to the least significant bits of the output;
//! the last component will be written to the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packUnorm2x16.xml">GLSL packUnorm2x16 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::uint32 packUnorm2x16(detail::tvec2<detail::float32> const & v);
//! First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values.
//! Then, the results are packed into the returned 32-bit unsigned integer.
//!
//! The conversion for component c of v to fixed point is done as follows:
//! packUnorm2x16: round(clamp(c, 0, +1) * 65535.0)
//!
//! The first component of the vector will be written to the least significant bits of the output;
//! the last component will be written to the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packUnorm2x16.xml">GLSL packUnorm2x16 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::uint32 packUnorm2x16(detail::tvec2<detail::float32> const & v);
//! First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values.
//! Then, the results are packed into the returned 32-bit unsigned integer.
//!
//! The conversion for component c of v to fixed point is done as follows:
//! packUnorm4x8: round(clamp(c, 0, +1) * 255.0)
//!
//! The first component of the vector will be written to the least significant bits of the output;
//! the last component will be written to the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packUnorm4x8.xml">GLSL packUnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::uint32 packUnorm4x8(detail::tvec4<detail::float32> const & v);
//! First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values.
//! Then, the results are packed into the returned 32-bit unsigned integer.
//!
//! The conversion for component c of v to fixed point is done as follows:
//! packUnorm4x8: round(clamp(c, 0, +1) * 255.0)
//!
//! The first component of the vector will be written to the least significant bits of the output;
//! the last component will be written to the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packUnorm4x8.xml">GLSL packUnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::uint32 packUnorm4x8(detail::tvec4<detail::float32> const & v);
//! First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values.
//! Then, the results are packed into the returned 32-bit unsigned integer.
//!
//! The conversion for component c of v to fixed point is done as follows:
//! packSnorm4x8: round(clamp(c, -1, +1) * 127.0)
//!
//! The first component of the vector will be written to the least significant bits of the output;
//! the last component will be written to the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packSnorm4x8.xml">GLSL packSnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::uint32 packSnorm4x8(detail::tvec4<detail::float32> const & v);
//! First, converts each component of the normalized floating-point value v into 8- or 16-bit integer values.
//! Then, the results are packed into the returned 32-bit unsigned integer.
//!
//! The conversion for component c of v to fixed point is done as follows:
//! packSnorm4x8: round(clamp(c, -1, +1) * 127.0)
//!
//! The first component of the vector will be written to the least significant bits of the output;
//! the last component will be written to the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packSnorm4x8.xml">GLSL packSnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::uint32 packSnorm4x8(detail::tvec4<detail::float32> const & v);
//! First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers.
//! Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.
//!
//! The conversion for unpacked fixed-point value f to floating point is done as follows:
//! unpackUnorm2x16: f / 65535.0
//!
//! The first component of the returned vector will be extracted from the least significant bits of the input;
//! the last component will be extracted from the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackUnorm2x16.xml">GLSL unpackUnorm2x16 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec2<detail::float32> unpackUnorm2x16(detail::uint32 const & p);
//! First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers.
//! Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.
//!
//! The conversion for unpacked fixed-point value f to floating point is done as follows:
//! unpackUnorm2x16: f / 65535.0
//!
//! The first component of the returned vector will be extracted from the least significant bits of the input;
//! the last component will be extracted from the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackUnorm2x16.xml">GLSL unpackUnorm2x16 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec2<detail::float32> unpackUnorm2x16(detail::uint32 const & p);
//! First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers.
//! Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.
//!
//! The conversion for unpacked fixed-point value f to floating point is done as follows:
//! unpackUnorm4x8: f / 255.0
//!
//! The first component of the returned vector will be extracted from the least significant bits of the input;
//! the last component will be extracted from the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackUnorm4x8.xml">GLSL unpackUnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec4<detail::float32> unpackUnorm4x8(detail::uint32 const & p);
//! First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers.
//! Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.
//!
//! The conversion for unpacked fixed-point value f to floating point is done as follows:
//! unpackUnorm4x8: f / 255.0
//!
//! The first component of the returned vector will be extracted from the least significant bits of the input;
//! the last component will be extracted from the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackUnorm4x8.xml">GLSL unpackUnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec4<detail::float32> unpackUnorm4x8(detail::uint32 const & p);
//! First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers.
//! Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.
//!
//! The conversion for unpacked fixed-point value f to floating point is done as follows:
//! unpackSnorm4x8: clamp(f / 127.0, -1, +1)
//!
//! The first component of the returned vector will be extracted from the least significant bits of the input;
//! the last component will be extracted from the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackSnorm4x8.xml">GLSL unpackSnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec4<detail::float32> unpackSnorm4x8(detail::uint32 const & p);
//! First, unpacks a single 32-bit unsigned integer p into a pair of 16-bit unsigned integers, four 8-bit unsigned integers, or four 8-bit signed integers.
//! Then, each component is converted to a normalized floating-point value to generate the returned two- or four-component vector.
//!
//! The conversion for unpacked fixed-point value f to floating point is done as follows:
//! unpackSnorm4x8: clamp(f / 127.0, -1, +1)
//!
//! The first component of the returned vector will be extracted from the least significant bits of the input;
//! the last component will be extracted from the most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackSnorm4x8.xml">GLSL unpackSnorm4x8 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec4<detail::float32> unpackSnorm4x8(detail::uint32 const & p);
//! Returns a double-precision value obtained by packing the components of v into a 64-bit value.
//! If an IEEE 754 Inf or NaN is created, it will not signal, and the resulting floating point value is unspecified.
//! Otherwise, the bit- level representation of v is preserved.
//! The first vector component specifies the 32 least significant bits;
//! the second component specifies the 32 most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packDouble2x32.xml">GLSL packDouble2x32 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
double packDouble2x32(detail::tvec2<detail::uint32> const & v);
//! Returns a double-precision value obtained by packing the components of v into a 64-bit value.
//! If an IEEE 754 Inf or NaN is created, it will not signal, and the resulting floating point value is unspecified.
//! Otherwise, the bit- level representation of v is preserved.
//! The first vector component specifies the 32 least significant bits;
//! the second component specifies the 32 most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/packDouble2x32.xml">GLSL packDouble2x32 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
double packDouble2x32(detail::tvec2<detail::uint32> const & v);
//! Returns a two-component unsigned integer vector representation of v.
//! The bit-level representation of v is preserved.
//! The first component of the vector contains the 32 least significant bits of the double;
//! the second component consists the 32 most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackDouble2x32.xml">GLSL unpackDouble2x32 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec2<detail::uint32> unpackDouble2x32(double const & v);
///@}
}//namespace packing
}//namespace function
}//namespace core
//! Returns a two-component unsigned integer vector representation of v.
//! The bit-level representation of v is preserved.
//! The first component of the vector contains the 32 least significant bits of the double;
//! the second component consists the 32 most significant bits.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/unpackDouble2x32.xml">GLSL unpackDouble2x32 man page</a>
//! \li GLSL 4.00.08 specification, section 8.4
detail::tvec2<detail::uint32> unpackDouble2x32(double const & v);
///@}
}//namespace packing
}//namespace function
}//namespace core
using namespace core::function::packing;
}//namespace glm

27
glm/core/func_trigonometric.hpp
View File

@ -10,17 +10,16 @@
#ifndef glm_core_func_trigonometric
#define glm_core_func_trigonometric
namespace glm
namespace glm{
namespace core{
namespace function{
//! Define Angle and trigonometry functions
//! from Section 8.1 of GLSL 1.30.8 specification.
//! Included in glm namespace.
namespace trigonometric
{
namespace core{
namespace function{
//! Define Angle and trigonometry functions
//! from Section 8.1 of GLSL 1.30.8 specification.
//! Included in glm namespace.
namespace trigonometric{
/// \addtogroup core_funcs
///@{
/// @{
//! Converts degrees to radians and returns the result.
//!
@ -140,12 +139,10 @@ namespace glm
template <typename genType>
genType atanh(genType const & x);
///@}
}//namespace trigonometric
}//namespace function
}//namespace core
/// @}
}//namespace trigonometric
}//namespace function
}//namespace core
using namespace core::function::trigonometric;
}//namespace glm

345
glm/core/func_vector_relational.hpp
View File

@ -12,201 +12,198 @@
#include "_detail.hpp"
namespace glm
namespace glm{
namespace core{
namespace function{
//! Define vector relational functions from Section 8.6 of GLSL 1.30.8 specification.
//! Included in glm namespace.
namespace vector_relational
{
namespace core{
namespace function{
//! Define vector relational functions from Section 8.6 of GLSL 1.30.8 specification.
//! Included in glm namespace.
namespace vector_relational
/// \addtogroup core_funcs
/// @{
//! Returns the component-wise comparison result of x < y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/lessThan.xml">GLSL lessThan man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type lessThan
(
vecType<T> const & x,
vecType<T> const & y
)
{
/// \addtogroup core_funcs
///@{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'lessThan', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'lessThan', GLM vector types required floating-point or integer value types vectors");
//! Returns the component-wise comparison result of x < y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/lessThan.xml">GLSL lessThan man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type lessThan
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'lessThan', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'lessThan', GLM vector types required floating-point or integer value types vectors");
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] < y[i];
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] < y[i];
return Result;
}
return Result;
}
//! Returns the component-wise comparison of result x <= y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/lessThanEqual.xml">GLSL lessThanEqual man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type lessThanEqual
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'lessThanEqual', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'lessThanEqual', GLM vector types required floating-point or integer value types vectors");
//! Returns the component-wise comparison of result x <= y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/lessThanEqual.xml">GLSL lessThanEqual man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type lessThanEqual
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'lessThanEqual', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'lessThanEqual', GLM vector types required floating-point or integer value types vectors");
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] <= y[i];
return Result;
}
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] <= y[i];
return Result;
}
//! Returns the component-wise comparison of result x > y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/greaterThan.xml">GLSL greaterThan man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type greaterThan
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'greaterThan', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'greaterThan', GLM vector types required floating-point or integer value types vectors");
//! Returns the component-wise comparison of result x > y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/greaterThan.xml">GLSL greaterThan man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type greaterThan
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'greaterThan', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'greaterThan', GLM vector types required floating-point or integer value types vectors");
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] > y[i];
return Result;
}
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] > y[i];
return Result;
}
//! Returns the component-wise comparison of result x >= y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/greaterThanEqual.xml">GLSL greaterThanEqual man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type greaterThanEqual
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'greaterThanEqual', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'greaterThanEqual', GLM vector types required floating-point or integer value types vectors");
//! Returns the component-wise comparison of result x >= y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/greaterThanEqual.xml">GLSL greaterThanEqual man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type greaterThanEqual
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'greaterThanEqual', GLM vector types required");
GLM_STATIC_ASSERT(detail::is_bool<T>::_NO,
"Invalid template instantiation of 'greaterThanEqual', GLM vector types required floating-point or integer value types vectors");
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] >= y[i];
return Result;
}
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] >= y[i];
return Result;
}
//! Returns the component-wise comparison of result x == y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/equal.xml">GLSL equal man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type equal
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'equal', GLM vector types required");
//! Returns the component-wise comparison of result x == y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/equal.xml">GLSL equal man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type equal
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'equal', GLM vector types required");
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] == y[i];
return Result;
}
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] == y[i];
return Result;
}
//! Returns the component-wise comparison of result x != y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/notEqual.xml">GLSL notEqual man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type notEqual
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'notEqual', GLM vector types required");
//! Returns the component-wise comparison of result x != y.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/notEqual.xml">GLSL notEqual man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <typename T, template <typename> class vecType>
GLM_FUNC_QUALIFIER typename vecType<T>::bool_type notEqual
(
vecType<T> const & x,
vecType<T> const & y
)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<T> >::_YES,
"Invalid template instantiation of 'notEqual', GLM vector types required");
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] != y[i];
return Result;
}
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = x[i] != y[i];
return Result;
}
//! Returns true if any component of x is true.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/any.xml">GLSL any man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <template <typename> class vecType>
GLM_FUNC_QUALIFIER bool any(vecType<bool> const & v)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES,
"Invalid template instantiation of 'any', GLM boolean vector types required");
//! Returns true if any component of x is true.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/any.xml">GLSL any man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <template <typename> class vecType>
GLM_FUNC_QUALIFIER bool any(vecType<bool> const & v)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES,
"Invalid template instantiation of 'any', GLM boolean vector types required");
bool Result = false;
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result = Result || v[i];
return Result;
}
bool Result = false;
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result = Result || v[i];
return Result;
}
//! Returns true if all components of x are true.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/all.xml">GLSL all man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <template <typename> class vecType>
GLM_FUNC_QUALIFIER bool all(vecType<bool> const & v)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES,
"Invalid template instantiation of 'all', GLM boolean vector types required");
//! Returns true if all components of x are true.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/all.xml">GLSL all man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <template <typename> class vecType>
GLM_FUNC_QUALIFIER bool all(vecType<bool> const & v)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES,
"Invalid template instantiation of 'all', GLM boolean vector types required");
bool Result = true;
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result = Result && v[i];
return Result;
}
bool Result = true;
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result = Result && v[i];
return Result;
}
//! Returns the component-wise logical complement of x.
//! /!\ Because of language incompatibilities between C++ and GLSL, GLM defines the function not but not_ instead.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/not.xml">GLSL not man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <template <typename> class vecType>
GLM_FUNC_QUALIFIER vecType<bool> not_(vecType<bool> const & v)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES,
"Invalid template instantiation of 'not_', GLM vector types required");
//! Returns the component-wise logical complement of x.
//! /!\ Because of language incompatibilities between C++ and GLSL, GLM defines the function not but not_ instead.
//!
//! \li <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/not.xml">GLSL not man page</a>
//! \li GLSL 1.30.08 specification, section 8.6
template <template <typename> class vecType>
GLM_FUNC_QUALIFIER vecType<bool> not_(vecType<bool> const & v)
{
GLM_STATIC_ASSERT(detail::is_vector<vecType<bool> >::_YES,
"Invalid template instantiation of 'not_', GLM vector types required");
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = !v[i];
return Result;
}
///@}
}//namespace vector_relational
}//namespace function
}//namespace core
typename vecType<bool>::bool_type Result(vecType<bool>::null);
for(typename vecType<bool>::size_type i = 0; i < vecType<bool>::value_size(); ++i)
Result[i] = !v[i];
return Result;
}
/// @}
}//namespace vector_relational
}//namespace function
}//namespace core
using namespace core::function::vector_relational;
}//namespace glm

2
glm/gtc/half_float.hpp
View File

@ -325,7 +325,7 @@ namespace gtc{
namespace half_float ///< GLM_GTC_half_float extension: Add support for half precision floating-point types
{
/// \addtogroup gtc_half_float
///@{
/// @{
/// Type for half-precision floating-point numbers.
/// From GLM_GTC_half_float extension.

2
glm/gtc/matrix_integer.hpp
View File

@ -25,7 +25,7 @@ namespace gtc{
namespace matrix_integer ///< GLM_GTC_matrix_integer extension: Add integer matrices
{
/// \addtogroup gtc_matrix_integer
///@{
/// @{
typedef detail::tmat2x2<highp_int> highp_imat2; //!< \brief High-precision signed integer 2x2 matrix. (from GLM_GTC_matrix_integer extension)
typedef detail::tmat3x3<highp_int> highp_imat3; //!< \brief High-precision signed integer 3x3 matrix. (from GLM_GTC_matrix_integer extension)

1
glm/gtc/quaternion.hpp
View File

@ -35,7 +35,6 @@ namespace detail
template <typename T>
struct tquat// : public genType<T, tquat>
{
enum ctor{null};
typedef T value_type;

1
glm/gtc/type_ptr.hpp
View File

@ -25,7 +25,6 @@ namespace glm{
namespace gtc{
namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matrices value type address.
{
/// \addtogroup gtc_type_ptr
///@{

4
glm/gtx/associated_min_max.hpp
View File

@ -26,7 +26,7 @@ namespace gtx{
namespace associated_min_max ///< GLM_GTX_associated_min_max extension: Min and max functions that return associated values not the compared onces.
{
/// \addtogroup gtx_associated_min_max
///@{
/// @{
//! \brief Min comparison between 2 variables
template<typename genTypeT, typename genTypeU>
@ -70,7 +70,7 @@ namespace associated_min_max ///< GLM_GTX_associated_min_max extension: Min and
const genTypeT& z, const genTypeU& c,
const genTypeT& w, const genTypeU& d);
///@}
/// @}
} //namespace associated_min_max
} //namespace gtx
} //namespace glm

2
glm/gtx/bit.hpp
View File

@ -29,7 +29,7 @@ namespace bit ///< GLM_GTX_bit extension: Allow to perform bit operations on int
using namespace gtc::half_float;
/// \addtogroup gtx_bit
///@{
/// @{
//! Build a mask of 'count' bits
//! From GLM_GTX_bit extension.

4
glm/gtx/color_cast.hpp
View File

@ -29,7 +29,7 @@ namespace color_cast ///< GLM_GTX_color_cast extension: Conversion between two c
using namespace gtx::number_precision;
/// \addtogroup gtx_color_cast
///@{
/// @{
//! Conversion of a floating value into a 8bit unsigned int value.
//! From GLM_GTX_color_cast extension.
@ -95,7 +95,7 @@ namespace color_cast ///< GLM_GTX_color_cast extension: Conversion between two c
template <typename T> gtc::type_precision::f64vec4 f64_bgra_cast(T c); //!< \brief Conversion of a u32 or u64 color into 4 components floating color. (From GLM_GTX_color_cast extension)
template <typename T> gtc::type_precision::f64vec4 f64_abgr_cast(T c); //!< \brief Conversion of a u32 or u64 color into 4 components floating color. (From GLM_GTX_color_cast extension)
///@}
/// @}
}//namespace color_space
}//namespace gtx
}//namespace glm

2
glm/gtx/color_space_YCoCg.hpp
View File

@ -25,7 +25,7 @@ namespace gtx{
namespace color_space_YCoCg ///< GLM_GTX_color_space_YCoCg extension: RGB to YCoCg conversions and operations
{
/// \addtogroup gtx_color_space_YCoCg
///@{
/// @{
//! Convert a color from RGB color space to YCoCg color space.
//! From GLM_GTX_color_space_YCoCg extension.