OpenGL Mathematics (GLM) is a header only C++ mathematics library for graphics software based on the OpenGL Shading Language (GLSL) specifications.

GLM provides classes and functions designed and implemented with the same naming conventions and functionality than GLSL so that anyone who knows GLSL, can use GLM as well in C++.

This project isn't limited to GLSL features. An extension system, based on the GLSL extension conventions, provides extended capabilities: matrix transformations, quaternions, data packing, random numbers, noise, etc...

This library works perfectly with OpenGL but it also ensures interoperability with other third party libraries and SDK. It is a good candidate for software rendering (raytracing / rasterisation), image processing, physics simulations and any development context that requires a simple and convenient mathematics library.

GLM is written in C++98 but can take advantage of C++11 when supported by the compiler. It is a platform independent library with no dependence and it officially supports the following compilers:

GCC 4.7 and higher
Intel C++ Compose XE 2013 and higher
Clang 3.4 and higher
Apple Clang 6.0 and higher
Visual C++ 2013 and higher
CUDA 9.0 and higher (experimental)
Any C++11 compiler

For more information about GLM, please have a look at the manual and the API reference documentation. The source code and the documentation are licensed under either the Happy Bunny License (Modified MIT) or the MIT License.

Thanks for contributing to the project by submitting pull requests.

#include <glm/vec3.hpp> // glm::vec3
#include <glm/vec4.hpp> // glm::vec4
#include <glm/mat4x4.hpp> // glm::mat4
#include <glm/ext/matrix_transform.hpp> // glm::translate, glm::rotate, glm::scale
#include <glm/ext/matrix_clip_space.hpp> // glm::perspective
#include <glm/ext/scalar_constants.hpp> // glm::pi

glm::mat4 camera(float Translate, glm::vec2 const& Rotate)
{
	glm::mat4 Projection = glm::perspective(glm::pi<float>() * 0.25f, 4.0f / 3.0f, 0.1f, 100.f);
	glm::mat4 View = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f, 0.0f, -Translate));
	View = glm::rotate(View, Rotate.y, glm::vec3(-1.0f, 0.0f, 0.0f));
	View = glm::rotate(View, Rotate.x, glm::vec3(0.0f, 1.0f, 0.0f));
	glm::mat4 Model = glm::scale(glm::mat4(1.0f), glm::vec3(0.5f));
	return Projection * View * Model;
}

Latest release

Project Health

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GitHub actions

Build and Install

cd /path/to/glm
cmake \
    -DGLM_BUILD_TESTS=OFF \
    -DBUILD_SHARED_LIBS=OFF \
    -B build .
cmake --build build -- all
cmake --build build -- install

Passing -DBUILD_SHARED_LIBS=ON to build shared library

And then in your CMakeLists.txt:

find_package(glm CONFIG REQUIRED)
target_link_libraries(main PRIVATE glm::glm)

If your prefer to use header-only version of GLM

find_package(glm CONFIG REQUIRED)
target_link_libraries(main PRIVATE glm::glm-header-only)

Vcpkg

vcpkg install glm

CMake using FetchContent

You can add glm to your CMake project to be built together.

Add to the CMakeLists.txt file:

cmake_minimum_required(VERSION 3.11) # FetchContent is new in version 3.11.

include(FetchContent)

FetchContent_Declare(
	glm
	GIT_REPOSITORY	https://github.com/g-truc/glm.git
	GIT_TAG 	bf71a834948186f4097caa076cd2663c69a10e1e #refs/tags/0.9.9.8
)

FetchContent_MakeAvailable(glm)

target_link_libraries(main PRIVATE glm::glm)

Release notes

GLM 1.0.1 - 2024-02-26

Features:

Added C++17 [[nodiscard]] support

Improvements:

Enables only warnings as errors while building unit tests
Added aligned_*vec3 simd support #1245

Fixes:

Fixed C++ language auto detection build, disable C++98 warnings with Clang #1235, #1231
Fixed GTX_color_space missing <glm/ext/scalar_constants.hpp> include #1233 #1238
Fixed EXT_matrix_transform shear implementation #1140 #1182
Fixed smoothstep SIMD implementation #1222

GLM 1.0.0 - 2024-01-24

Features:

Added GLM_EXT_scalar_reciprocal with tests
Added GLM_EXT_vector_reciprocal with tests
Added glm::iround and glm::uround to GLM_EXT_scalar_common and GLM_EXT_vector_common
Added GLM_EXT_matrix_integer with tests
Added Github Actions
Added GLM_FORCE_UNRESTRICTED_FLOAT to prevent static asserts when using other scalar types with function expecting floats.

Improvements:

Added constexpr qualifier for cross product #1040
Added constexpr qualifier for dot product #1040

Fixes:

Fixed incorrect assertion for glm::min and glm::max #1009
Fixed quaternion orientation in glm::decompose #1012
Fixed singularity in quaternion to euler angle roll conversion #1019
Fixed quat glm::pow handling of small magnitude quaternions #1022
Fixed glm::fastNormalize build error #1033
Fixed glm::isMultiple build error #1034
Fixed glm::adjugate calculation #1035
Fixed glm::angle discards the sign of result for angles in range (2pi-1, 2pi) #1038
Removed ban on using glm::string_cast with CUDA host code #1041

GLM 0.9.9.8 - 2020-04-13

Features:

Added GLM_EXT_vector_intX and GLM_EXT_vector_uintX extensions
Added GLM_EXT_matrix_intX and GLM_EXT_matrix_uintX extensions

Improvements:

Added glm::clamp, glm::repeat, glm::mirrorClamp and glm::mirrorRepeat function to GLM_EXT_scalar_common and GLM_EXT_vector_common extensions with tests

Fixes:

Fixed unnecessary warnings from matrix_projection.inl #995
Fixed quaternion glm::slerp overload which interpolates with extra spins #996
Fixed for glm::length using arch64 #992
Fixed singularity check for glm::quatLookAt #770

GLM 0.9.9.7 - 2020-01-05

Improvements:

Improved Neon support with more functions optimized #950
Added CMake GLM interface #963
Added glm::fma implementation based on std::fma #969
Added missing quat constexpr #955
Added GLM_FORCE_QUAT_DATA_WXYZ to store quat data as w,x,y,z instead of x,y,z,w #983

Fixes:

Fixed equal ULP variation when using negative sign #965
Fixed for intersection ray/plane and added related tests #953
Fixed ARM 64bit detection #949
Fixed GLM_EXT_matrix_clip_space warnings #980
Fixed Wimplicit-int-float-conversion warnings with clang 10+ #986
Fixed GLM_EXT_matrix_clip_space perspectiveFov

GLM 0.9.9.6 - 2019-09-08

Features:

Added Neon support #945
Added SYCL support #914
Added GLM_EXT_scalar_integer extension with power of two and multiple scalar functions
Added GLM_EXT_vector_integer extension with power of two and multiple vector functions

Improvements:

Added Visual C++ 2019 detection
Added Visual C++ 2017 15.8 and 15.9 detection
Added missing genType check for glm::bitCount and glm::bitfieldReverse #893

Fixes:

Fixed for g++6 where -std=c++1z sets __cplusplus to 201500 instead of 201402 #921
Fixed hash hashes qua instead of tquat #919
Fixed .natvis as structs renamed #915
Fixed glm::ldexp and glm::frexp declaration #895
Fixed missing const to quaternion conversion operators #890
Fixed GLM_EXT_scalar_ulp and GLM_EXT_vector_ulp API coding style
Fixed quaternion component order: w, {x, y, z} #916
Fixed GLM_HAS_CXX11_STL broken on Clang with Linux #926
Fixed Clang or GCC build due to wrong GLM_HAS_IF_CONSTEXPR definition #907
Fixed CUDA 9 build #910

Deprecation:

Removed CMake install and uninstall scripts

GLM 0.9.9.5 - 2019-04-01

Fixes:

Fixed build errors when defining GLM_ENABLE_EXPERIMENTAL #884 #883
Fixed if constexpr warning #887
Fixed missing declarations for glm::frexp and glm::ldexp #886

GLM 0.9.9.4 - 2019-03-19

Features:

Added glm::mix implementation for matrices in *GLM_EXT_matrix_common/ #842
Added CMake BUILD_SHARED_LIBS and BUILD_STATIC_LIBS build options #871

Improvements:

Added GLM_FORCE_INTRINSICS to enable SIMD instruction code path. By default, it's disabled allowing constexpr support by default. #865
Optimized inverseTransform #867

Fixes:

Fixed in glm::mat4x3 conversion #829
Fixed constexpr issue on GCC #832 #865
Fixed glm::mix implementation to improve GLSL conformance #866
Fixed glm::int8 being defined as unsigned char with some compiler #839
Fixed glm::vec1 include #856
Ignore .vscode #848

GLM 0.9.9.3 - 2018-10-31

Features:

Added glm::equal and glm::notEqual overload with max ULPs parameters for scalar numbers #121
Added GLM_FORCE_SILENT_WARNINGS to silent GLM warnings when using language extensions but using W4 or Wpedantic warnings #814 #775
Added adjugate functions to GLM_GTX_matrix_operation #151
Added GLM_FORCE_ALIGNED_GENTYPES to enable aligned types and SIMD instruction are not enabled. This disable constexpr #816

Improvements:

Added constant time ULP distance between float #121
Added GLM_FORCE_SILENT_WARNINGS to suppress GLM warnings #822

Fixes:

Fixed glm::simplex noise build with double #734
Fixed glm::bitfieldInsert according to GLSL spec #818
Fixed glm::refract for negative 'k' #808

GLM 0.9.9.2 - 2018-09-14

Fixes:

Fixed GLM_FORCE_CXX** section in the manual
Fixed default initialization with vector and quaternion types using GLM_FORCE_CTOR_INIT #812

GLM 0.9.9.1 - 2018-09-03

Features:

Added bitfieldDeinterleave to GLM_GTC_bitfield
Added missing glm::equal and glm::notEqual with epsilon for quaternion types to GLM_GTC_quaternion
Added GLM_EXT_matrix_relational: glm::equal and glm::notEqual with epsilon for matrix types
Added missing aligned matrix types to GLM_GTC_type_aligned
Added C++17 detection
Added Visual C++ language standard version detection
Added PDF manual build from markdown

Improvements:

Added a section to the manual for contributing to GLM
Refactor manual, lists all configuration defines
Added missing glm::vec1 based constructors
Redesigned constexpr support which excludes both SIMD and constexpr #783
Added detection of Visual C++ 2017 toolsets
Added identity functions #765
Split headers into EXT extensions to improve compilation time #670
Added separate performance tests
Clarified refract valid range of the indices of refraction, between -1 and 1 inclusively #806

Fixes:

Fixed SIMD detection on Clang and GCC
Fixed build problems due to std::printf and std::clock_t #778
Fixed int mod
Anonymous unions require C++ language extensions
Fixed glm::ortho #790
Fixed Visual C++ 2013 warnings in vector relational code #782
Fixed ICC build errors with constexpr #704
Fixed defaulted operator= and constructors #791
Fixed invalid conversion from int scalar with vec4 constructor when using SSE instruction
Fixed infinite loop in random functions when using negative radius values using an assert #739

GLM 0.9.9.0 - 2018-05-22

Features:

Added RGBM encoding in GLM_GTC_packing #420
Added GLM_GTX_color_encoding extension
Added GLM_GTX_vec_swizzle, faster compile time swizzling then swizzle operator #558
Added GLM_GTX_exterior_product with a vec2 glm::cross implementation #621
Added GLM_GTX_matrix_factorisation to factor matrices in various forms #654
Added GLM_ENABLE_EXPERIMENTAL to enable experimental features.
Added packing functions for integer vectors #639
Added conan packaging configuration #643 #641
Added glm::quatLookAt to GLM_GTX_quaternion #659
Added glm::fmin, glm::fmax and glm::fclamp to GLM_GTX_extended_min_max #372
Added GLM_EXT_vector_relational: extend glm::equal and glm::notEqual to take an epsilon argument
Added GLM_EXT_vector_relational: glm::openBounded and glm::closeBounded
Added GLM_EXT_vec1: *vec1 types
Added GLM_GTX_texture: levels function
Added separate functions to use both negative one and zero near clip plans #680
Added GLM_FORCE_SINGLE_ONLY to use GLM on platforms that don't support double #627
Added GLM_GTX_easing for interpolation functions #761

Improvements:

No more default initialization of vector, matrix and quaternion types
Added lowp variant of GTC_color_space convertLinearToSRGB #419
Replaced the manual by a markdown version #458
Improved API documentation #668
Optimized GTC_packing implementation
Optimized GTC_noise functions
Optimized GTC_color_space HSV to RGB conversions
Optimised GTX_color_space_YCoCg YCoCgR conversions
Optimized GTX_matrix_interpolation axisAngle function
Added FAQ 12: Windows headers cause build errors... #557
Removed GCC shadow warnings #595
Added error for including of different versions of GLM #619
Added GLM_FORCE_IGNORE_VERSION to ignore error caused by including different version of GLM #619
Reduced warnings when using very strict compilation flags #646
length() member functions are constexpr #657
Added support of -Weverything with Clang #646
Improved exponential function test coverage
Enabled warnings as error with Clang unit tests
Conan package is an external repository: https://github.com/bincrafters/conan-glm
Clarify quat_cast documentation, applying on pure rotation matrices #759

Fixes:

Removed doxygen references to GLM_GTC_half_float which was removed in 0.9.4
Fixed glm::decompose #448
Fixed glm::intersectRayTriangle #6
Fixed dual quaternion != operator #629
Fixed usused variable warning in GLM_GTX_spline #618
Fixed references to GLM_FORCE_RADIANS which was removed #642
Fixed glm::fastInverseSqrt to use fast inverse square #640
Fixed glm::axisAngle NaN #638
Fixed integer pow from GLM_GTX_integer with null exponent #658
Fixed quat normalize build error #656
Fixed Visual C++ 2017.2 warning regarding __has_feature definition #655
Fixed documentation warnings
Fixed GLM_HAS_OPENMP when OpenMP is not enabled
Fixed Better follow GLSL min and max specification #372
Fixed quaternion constructor from two vectors special cases #469
Fixed glm::to_string on quaternions wrong components order #681
Fixed glm::acsch #698
Fixed glm::isnan on CUDA #727

Deprecation:

Requires Visual Studio 2013, GCC 4.7, Clang 3.4, Cuda 7, ICC 2013 or a C++11 compiler
Removed GLM_GTX_simd_vec4 extension
Removed GLM_GTX_simd_mat4 extension
Removed GLM_GTX_simd_quat extension
Removed GLM_SWIZZLE, use GLM_FORCE_SWIZZLE instead
Removed GLM_MESSAGES, use GLM_FORCE_MESSAGES instead
Removed GLM_DEPTH_ZERO_TO_ONE, use GLM_FORCE_DEPTH_ZERO_TO_ONE instead
Removed GLM_LEFT_HANDED, use GLM_FORCE_LEFT_HANDED instead
Removed GLM_FORCE_NO_CTOR_INIT
Removed glm::uninitialize

GLM 0.9.8.5 - 2017-08-16

Features:

Added Conan package support #647

Fixes:

Fixed Clang version detection from source #608
Fixed glm::packF3x9_E1x5 exponent packing #614
Fixed build error min and max specializations with integer #616
Fixed simd_mat4 build error #652

GLM 0.9.8.4 - 2017-01-22

Fixes:

Fixed GLM_GTC_packing test failing on GCC x86 due to denorms #212 #577
Fixed POPCNT optimization build in Clang #512
Fixed glm::intersectRayPlane returns true in parallel case #578
Fixed GCC 6.2 compiler warnings #580
Fixed GLM_GTX_matrix_decompose glm::decompose #582 #448
Fixed GCC 4.5 and older build #566
Fixed Visual C++ internal error when declaring a global vec type with siwzzle expression enabled #594
Fixed GLM_FORCE_CXX11 with Clang and libstlc++ which wasn't using C++11 STL features. #604

GLM 0.9.8.3 - 2016-11-12

Improvements:

Broader support of GLM_FORCE_UNRESTRICTED_GENTYPE #378

Fixes:

Fixed Android build error with C++11 compiler but C++98 STL #284 #564
Fixed GLM_GTX_transform2 shear* functions #403
Fixed interaction between GLM_FORCE_UNRESTRICTED_GENTYPE and glm::ortho function #568
Fixed glm::bitCount with AVX on 32 bit builds #567
Fixed CMake find_package with version specification #572 #573

GLM 0.9.8.2 - 2016-11-01

Improvements:

Added Visual C++ 15 detection
Added Clang 4.0 detection
Added warning messages when using GLM_FORCE_CXX** but the compiler is known to not fully support the requested C++ version #555
Refactored GLM_COMPILER_VC values
Made quat, vec, mat type component length() static #565

Fixes:

Fixed Visual C++ constexpr build error #555, #556

GLM 0.9.8.1 - 2016-09-25

Improvements:

Optimized quaternion glm::log function #554

Fixes:

Fixed GCC warning filtering, replaced -pedantic by -Wpedantic
Fixed SIMD faceforward bug. #549
Fixed GCC 4.8 with C++11 compilation option #550
Fixed Visual Studio aligned type W4 warning #548
Fixed packing/unpacking function fixed for 5_6_5 and 5_5_5_1 #552

GLM 0.9.8.0 - 2016-09-11

Features:

Added right and left handed projection and clip control support #447 #415 #119
Added glm::compNormalize and glm::compScale functions to GLM_GTX_component_wise
Added glm::packF3x9_E1x5 and glm::unpackF3x9_E1x5 to GLM_GTC_packing for RGB9E5 #416
Added (un)packHalf to GLM_GTC_packing
Added (un)packUnorm and (un)packSnorm to GLM_GTC_packing
Added 16bit pack and unpack to GLM_GTC_packing
Added 8bit pack and unpack to GLM_GTC_packing
Added missing bvec* && and || operators
Added glm::iround and glm::uround to GLM_GTC_integer, fast round on positive values
Added raw SIMD API
Added 'aligned' qualifiers
Added GLM_GTC_type_aligned with aligned vec types
Added GLM_GTC_functions extension
Added quaternion version of glm::isnan and glm::isinf #521
Added glm::lowestBitValue to GLM_GTX_bit #536
Added GLM_FORCE_UNRESTRICTED_GENTYPE allowing non basic genType #543

Improvements:

Improved SIMD and swizzle operators interactions with GCC and Clang #474
Improved GLM_GTC_random linearRand documentation
Improved GLM_GTC_reciprocal documentation
Improved GLM_FORCE_EXPLICIT_CTOR coverage #481
Improved OpenMP support detection for Clang, GCC, ICC and VC
Improved GLM_GTX_wrap for SIMD friendliness
Added constexpr for *vec*, *mat*, *quat* and *dual_quat* types #493
Added NEON instruction set detection
Added MIPS CPUs detection
Added PowerPC CPUs detection
Use Cuda built-in function for abs function implementation with Cuda compiler
Factorized GLM_COMPILER_LLVM and GLM_COMPILER_APPLE_CLANG into GLM_COMPILER_CLANG
No more warnings for use of long long
Added more information to build messages

Fixes:

Fixed GLM_GTX_extended_min_max filename typo #386
Fixed glm::intersectRayTriangle to not do any unintentional backface culling
Fixed long long warnings when using C++98 on GCC and Clang #482
Fixed sign with signed integer function on non-x86 architecture
Fixed strict aliasing warnings #473
Fixed missing glm::vec1 overload to glm::length2 and glm::distance2 functions #431
Fixed GLM test '/fp:fast' and '/Za' command-line options are incompatible
Fixed quaterion to mat3 cast function glm::mat3_cast from GLM_GTC_quaternion #542
Fixed GLM_GTX_io for Cuda #547 #546

Deprecation:

Removed GLM_FORCE_SIZE_FUNC define
Deprecated GLM_GTX_simd_vec4 extension
Deprecated GLM_GTX_simd_mat4 extension
Deprecated GLM_GTX_simd_quat extension
Deprecated GLM_SWIZZLE, use GLM_FORCE_SWIZZLE instead
Deprecated GLM_MESSAGES, use GLM_FORCE_MESSAGES instead

GLM 0.9.7.6 - 2016-07-16

Improvements:

Added pkg-config file #509
Updated list of compiler versions detected
Improved C++ 11 STL detection #523

Fixes:

Fixed STL for C++11 detection on ICC #510
Fixed missing vec1 overload to length2 and distance2 functions #431
Fixed long long warnings when using C++98 on GCC and Clang #482
Fixed scalar reciprocal functions (GTC_reciprocal) #520

GLM 0.9.7.5 - 2016-05-24

Improvements:

Added Visual C++ Clang toolset detection

Fixes:

Fixed uaddCarry warning #497
Fixed roundPowerOfTwo and floorPowerOfTwo #503
Fixed Visual C++ SIMD instruction set automatic detection in 64 bits
Fixed to_string when used with GLM_FORCE_INLINE #506
Fixed GLM_FORCE_INLINE with binary vec4 operators
Fixed GTX_extended_min_max filename typo #386
Fixed intersectRayTriangle to not do any unintentional backface culling

GLM 0.9.7.4 - 2016-03-19

Fixes:

Fixed asinh and atanh warning with C++98 STL #484
Fixed polar coordinates function latitude #485
Fixed outerProduct definitions and operator signatures for mat2x4 and vec4 #475
Fixed eulerAngles precision error, returns NaN #451
Fixed undefined reference errors #489
Fixed missing GLM_PLATFORM_CYGWIN declaration #495
Fixed various undefined reference errors #490

GLM 0.9.7.3 - 2016-02-21

Improvements:

Added AVX512 detection

Fixes:

Fixed CMake policy warning
Fixed GCC 6.0 detection #477
Fixed Clang build on Windows #479
Fixed 64 bits constants warnings on GCC #463

GLM 0.9.7.2 - 2016-01-03

Fixes:

Fixed GTC_round floorMultiple/ceilMultiple #412
Fixed GTC_packing unpackUnorm3x10_1x2 #414
Fixed GTC_matrix_inverse affineInverse #192
Fixed ICC on Linux build errors #449
Fixed ldexp and frexp compilation errors
Fixed "Declaration shadows a field" warning #468
Fixed 'GLM_COMPILER_VC2005 is not defined' warning #468
Fixed various 'X is not defined' warnings #468
Fixed missing unary + operator #435
Fixed Cygwin build errors when using C++11 #405

GLM 0.9.7.1 - 2015-09-07

Improvements:

Improved constexpr for constant functions coverage #198
Added to_string for quat and dual_quat in GTX_string_cast #375
Improved overall execution time of unit tests #396

Fixes:

Fixed strict alignment warnings #235 #370
Fixed link errors on compilers not supported default function #377
Fixed compilation warnings in vec4
Fixed non-identity quaternions for equal vectors #234
Fixed excessive GTX_fast_trigonometry execution time #396
Fixed Visual Studio 2015 'hides class member' warnings #394
Fixed builtin bitscan never being used #392
Removed unused func_noise.* files #398

GLM 0.9.7.0 - 2015-08-02

Features:

Added GTC_color_space: convertLinearToSRGB and convertSRGBToLinear functions
Added 'fmod' overload to GTX_common with tests #308
Left handed perspective and lookAt functions #314
Added functions eulerAngleXYZ and extractEulerAngleXYZ #311
Added <glm/gtx/hash.hpp> to perform std::hash on GLM types #320 #367
Added <glm/gtx/wrap.hpp> for texcoord wrapping
Added static components and precision members to all vector and quat types #350
Added .gitignore #349
Added support of defaulted functions to GLM types, to use them in unions #366

Improvements:

Changed usage of __has_include to support Intel compiler #307
Specialized integer implementation of YCoCg-R #310
Don't show status message in 'FindGLM' if 'QUIET' option is set. #317
Added master branch continuous integration service on Linux 64 #332
Clarified manual regarding angle unit in GLM, added FAQ 11 #326
Updated list of compiler versions

Fixes:

Fixed default precision for quat and dual_quat type #312
Fixed (u)int64 MSB/LSB handling on BE archs #306
Fixed multi-line comment warning in g++. #315
Fixed specifier removal by 'std::make_pair<>' #333
Fixed perspective fovy argument documentation #327
Removed -m64 causing build issues on Linux 32 #331
Fixed isfinite with C++98 compilers #343
Fixed Intel compiler build error on Linux #354
Fixed use of libstdc++ with Clang #351
Fixed quaternion pow #346
Fixed decompose warnings #373
Fixed matrix conversions #371

Deprecation:

Removed integer specification for 'mod' in GTC_integer #308
Removed GTX_multiple, replaced by GTC_round

GLM 0.9.6.3 - 2015-02-15

Fixed Android doesn't have C++ 11 STL #284

GLM 0.9.6.2 - 2015-02-15

Features:

Added display of GLM version with other GLM_MESSAGES
Added ARM instruction set detection

Improvements:

Removed assert for perspective with zFar < zNear #298
Added Visual Studio natvis support for vec1, quat and dualqual types
Cleaned up C++11 feature detections
Clarify GLM licensing

Fixes:

Fixed faceforward build #289
Fixed conflict with Xlib #define True 1 #293
Fixed decompose function VS2010 templating issues #294
Fixed mat4x3 = mat2x3 * mat4x2 operator #297
Fixed warnings in F2x11_1x10 packing function in GTC_packing #295
Fixed Visual Studio natvis support for vec4 #288
Fixed GTC_packing packnormx build and added tests #292
Disabled GTX_scalar_multiplication for GCC, failing to build tests #242
Fixed Visual C++ 2015 constexpr errors: Disabled only partial support
Fixed functions not inlined with Clang #302
Fixed memory corruption (undefined behaviour) #303

GLM 0.9.6.1 - 2014-12-10

Features:

Added GLM_LANG_CXX14_FLAG and GLM_LANG_CXX1Z_FLAG language feature flags
Added C++14 detection

Improvements:

Clean up GLM_MESSAGES compilation log to report only detected capabilities

Fixes:

Fixed scalar uaddCarry build error with Cuda #276
Fixed C++11 explicit conversion operators detection #282
Fixed missing explicit conversion when using integer log2 with *vec1 types
Fixed 64 bits integer GTX_string_cast to_string on VC 32 bit compiler
Fixed Android build issue, STL C++11 is not supported by the NDK #284
Fixed unsupported _BitScanForward64 and _BitScanReverse64 in VC10
Fixed Visual C++ 32 bit build #283
Fixed GLM_FORCE_SIZE_FUNC pragma message
Fixed C++98 only build
Fixed conflict between GTX_compatibility and GTC_quaternion #286
Fixed C++ language restriction using GLM_FORCE_CXX**

GLM 0.9.6.0 - 2014-11-30

Features:

Exposed template vector and matrix types in 'glm' namespace #239, #244
Added GTX_scalar_multiplication for C++ 11 compiler only #242
Added GTX_range for C++ 11 compiler only #240
Added closestPointOnLine function for tvec2 to GTX_closest_point #238
Added GTC_vec1 extension, *vec1 support to vec types
Updated GTX_associated_min_max with vec1 support
Added support of precision and integers to linearRand #230
Added Integer types support to GTX_string_cast #249
Added vec3 slerp #237
Added GTX_common with isdenomal #223
Added GLM_FORCE_SIZE_FUNC to replace .length() by .size() #245
Added GLM_FORCE_NO_CTOR_INIT
Added 'uninitialize' to explicitly not initialize a GLM type
Added GTC_bitfield extension, promoted GTX_bit
Added GTC_integer extension, promoted GTX_bit and GTX_integer
Added GTC_round extension, promoted GTX_bit
Added GLM_FORCE_EXPLICIT_CTOR to require explicit type conversions #269
Added GTX_type_aligned for aligned vector, matrix and quaternion types

Improvements:

Rely on C++11 to implement isinf and isnan
Removed GLM_FORCE_CUDA, Cuda is implicitly detected
Separated Apple Clang and LLVM compiler detection
Used pragma once
Undetected C++ compiler automatically compile with GLM_FORCE_CXX98 and GLM_FORCE_PURE
Added not function (from GLSL specification) on VC12
Optimized bitfieldReverse and bitCount functions
Optimized findLSB and findMSB functions.
Optimized matrix-vector multiple performance with Cuda #257, #258
Reduced integer type redefinitions #233
Rewrote GTX_fast_trigonometry #264 #265
Made types trivially copyable #263
Removed in GLM tests
Used std features within GLM without redeclaring
Optimized cot function #272
Optimized sign function #272
Added explicit cast from quat to mat3 and mat4 #275

Fixes:

Fixed std::nextafter not supported with C++11 on Android #217
Fixed missing value_type for dual quaternion
Fixed return type of dual quaternion length
Fixed infinite loop in isfinite function with GCC #221
Fixed Visual Studio 14 compiler warnings
Fixed implicit conversion from another tvec2 type to another tvec2 #241
Fixed lack of consistency of quat and dualquat constructors
Fixed uaddCarray #253
Fixed float comparison warnings #270

Deprecation:

Requires Visual Studio 2010, GCC 4.2, Apple Clang 4.0, LLVM 3.0, Cuda 4, ICC 2013 or a C++98 compiler
Removed degrees for function parameters
Removed GLM_FORCE_RADIANS, active by default
Removed VC 2005 / 8 and 2008 / 9 support
Removed GCC 3.4 to 4.3 support
Removed LLVM GCC support
Removed LLVM 2.6 to 3.1 support
Removed CUDA 3.0 to 3.2 support

GLM 0.9.5.4 - 2014-06-21

Fixed non-utf8 character #196
Added FindGLM install for CMake #189
Fixed GTX_color_space - saturation #195
Fixed glm::isinf and glm::isnan for with Android NDK 9d #191
Fixed builtin GLM_ARCH_SSE4 #204
Optimized Quaternion vector rotation #205
Fixed missing doxygen @endcond tag #211
Fixed instruction set detection with Clang #158
Fixed orientate3 function #207
Fixed lerp when cosTheta is close to 1 in quaternion slerp #210
Added GTX_io for io with #144
Fixed fastDistance ambiguity #215
Fixed tweakedInfinitePerspective #208 and added user-defined epsilon to tweakedInfinitePerspective
Fixed std::copy and std::vector with GLM types #214
Fixed strict aliasing issues #212, #152
Fixed std::nextafter not supported with C++11 on Android #213
Fixed corner cases in exp and log functions for quaternions #199

GLM 0.9.5.3 - 2014-04-02

Added instruction set auto detection with Visual C++ using _M_IX86_FP - /arch compiler argument
Fixed GTX_raw_data code dependency
Fixed GCC instruction set detection
Added GLM_GTX_matrix_transform_2d extension (#178, #176)
Fixed CUDA issues (#169, #168, #183, #182)
Added support for all extensions but GTX_string_cast to CUDA
Fixed strict aliasing warnings in GCC 4.8.1 / Android NDK 9c (#152)
Fixed missing bitfieldInterleave definisions
Fixed usubBorrow (#171)
Fixed eulerAngle*** not consistent for right-handed coordinate system (#173)
Added full tests for eulerAngle*** functions (#173)
Added workaround for a CUDA compiler bug (#186, #185)

GLM 0.9.5.2 - 2014-02-08

Fixed initializer list ambiguity (#159, #160)
Fixed warnings with the Android NDK 9c
Fixed non power of two matrix products
Fixed mix function link error
Fixed SSE code included in GLM tests on "pure" platforms
Fixed undefined reference to fastInverseSqrt (#161)
Fixed GLM_FORCE_RADIANS with <glm/ext.hpp> build error (#165)
Fix dot product clamp range for vector angle functions. (#163)
Tentative fix for strict aliasing warning in GCC 4.8.1 / Android NDK 9c (#152)
Fixed GLM_GTC_constants description brief (#162)

GLM 0.9.5.1 - 2014-01-11

Fixed angle and orientedAngle that sometimes return NaN values (#145)
Deprecated degrees for function parameters and display a message
Added possible static_cast conversion of GLM types (#72)
Fixed error 'inverse' is not a member of 'glm' from glm::unProject (#146)
Fixed mismatch between some declarations and definitions
Fixed inverse link error when using namespace glm; (#147)
Optimized matrix inverse and division code (#149)
Added intersectRayPlane function (#153)
Fixed outerProduct return type (#155)

GLM 0.9.5.0 - 2013-12-25

Added forward declarations (glm/fwd.hpp) for faster compilations
Added per feature headers
Minimized GLM internal dependencies
Improved Intel Compiler detection
Added bitfieldInterleave and _mm_bit_interleave_si128 functions
Added GTX_scalar_relational
Added GTX_dual_quaternion
Added rotation function to GTX_quaternion (#22)
Added precision variation of each type
Added quaternion comparison functions
Fixed GTX_multiple for negative value
Removed GTX_ocl_type extension
Fixed post increment and decrement operators
Fixed perspective with zNear == 0 (#71)
Removed l-value swizzle operators
Cleaned up compiler detection code for unsupported compilers
Replaced C cast by C++ casts
Fixed .length() that should return a int and not a size_t
Added GLM_FORCE_SIZE_T_LENGTH and glm::length_t
Removed unnecessary conversions
Optimized packing and unpacking functions
Removed the normalization of the up argument of lookAt function (#114)
Added low precision specializations of inversesqrt
Fixed ldexp and frexp implementations
Increased assert coverage
Increased static_assert coverage
Replaced GLM traits by STL traits when possible
Allowed including individual core feature
Increased unit tests completeness
Added creating of a quaternion from two vectors
Added C++11 initializer lists
Fixed umulExtended and imulExtended implementations for vector types (#76)
Fixed CUDA coverage for GTC extensions
Added GTX_io extension
Improved GLM messages enabled when defining GLM_MESSAGES
Hidden matrix_inverse function implementation detail into private section

GLM 0.9.4.6 - 2013-09-20

Fixed detection to select the last known compiler if newer version #106
Fixed is_int and is_uint code duplication with GCC and C++11 #107
Fixed test suite build while using Clang in C++11 mode
Added c++1y mode support in CMake test suite
Removed ms extension mode to CMake when no using Visual C++
Added pedantic mode to CMake test suite for Clang and GCC
Added use of GCC frontend on Unix for ICC and Visual C++ fronted on Windows for ICC
Added compilation errors for unsupported compiler versions
Fixed glm::orientation with GLM_FORCE_RADIANS defined #112
Fixed const ref issue on assignment operator taking a scalar parameter #116
Fixed glm::eulerAngleY implementation #117

GLM 0.9.4.5 - 2013-08-12

Fixed CUDA support
Fixed inclusion of intrinsics in "pure" mode #92
Fixed language detection on GCC when the C++0x mode isn't enabled #95
Fixed issue #97: register is deprecated in C++11
Fixed issue #96: CUDA issues
Added Windows CE detection #92
Added missing value_ptr for quaternions #99

GLM 0.9.4.4 - 2013-05-29

Fixed slerp when costheta is close to 1 #65
Fixed mat4x2 value_type constructor #70
Fixed glm.natvis for Visual C++ 12 #82
Added assert in inversesqrt to detect division by zero #61
Fixed missing swizzle operators #86
Fixed CUDA warnings #86
Fixed GLM natvis for VC11 #82
Fixed GLM_GTX_multiple with negative values #79
Fixed glm::perspective when zNear is zero #71

GLM 0.9.4.3 - 2013-03-20

Detected qualifier for Clang
Fixed C++11 mode for GCC, couldn't be enabled without MS extensions
Fixed squad, intermediate and exp quaternion functions
Fixed GTX_polar_coordinates euclidean function, takes a vec2 instead of a vec3
Clarify the license applying on the manual
Added a docx copy of the manual
Fixed GLM_GTX_matrix_interpolation
Fixed isnan and isinf on Android with Clang
Autodetected C++ version using __cplusplus value
Fixed mix for bool and bvec* third parameter

GLM 0.9.4.2 - 2013-02-14

Fixed compAdd from GTX_component_wise
Fixed SIMD support for Intel compiler on Windows
Fixed isnan and isinf for CUDA compiler
Fixed GLM_FORCE_RADIANS on glm::perspective
Fixed GCC warnings
Fixed packDouble2x32 on Xcode
Fixed mix for vec4 SSE implementation
Fixed 0x2013 dash character in comments that cause issue in Windows Japanese mode
Fixed documentation warnings
Fixed CUDA warnings

GLM 0.9.4.1 - 2012-12-22

Improved half support: -0.0 case and implicit conversions
Fixed Intel Composer Compiler support on Linux
Fixed interaction between quaternion and euler angles
Fixed GTC_constants build
Fixed GTX_multiple
Fixed quat slerp using mix function when cosTheta close to 1
Improved fvec4SIMD and fmat4x4SIMD implementations
Fixed assert messages
Added slerp and lerp quaternion functions and tests

GLM 0.9.4.0 - 2012-11-18

Added Intel Composer Compiler support
Promoted GTC_espilon extension
Promoted GTC_ulp extension
Removed GLM website from the source repository
Added GLM_FORCE_RADIANS so that all functions takes radians for arguments
Fixed detection of Clang and LLVM GCC on MacOS X
Added debugger visualizers for Visual C++ 2012
Requires Visual Studio 2005, GCC 4.2, Clang 2.6, Cuda 3, ICC 2013 or a C++98 compiler

GLM 0.9.3.4 - 2012-06-30

Added SSE4 and AVX2 detection.
Removed VIRTREV_xstream and the incompatibility generated with GCC
Fixed C++11 compiler option for GCC
Removed MS language extension option for GCC (not fonctionnal)
Fixed bitfieldExtract for vector types
Fixed warnings
Fixed SSE includes

GLM 0.9.3.3 - 2012-05-10

Fixed isinf and isnan
Improved compatibility with Intel compiler
Added CMake test build options: SIMD, C++11, fast math and MS land ext
Fixed SIMD mat4 test on GCC
Fixed perspectiveFov implementation
Fixed matrixCompMult for none-square matrices
Fixed namespace issue on stream operators
Fixed various warnings
Added VC11 support

GLM 0.9.3.2 - 2012-03-15

Fixed doxygen documentation
Fixed Clang version detection
Fixed simd mat4 /= operator

GLM 0.9.3.1 - 2012-01-25

Fixed platform detection
Fixed warnings
Removed detail code from Doxygen doc

GLM 0.9.3.0 - 2012-01-09

Added CPP Check project
Fixed conflict with Windows headers
Fixed isinf implementation
Fixed Boost conflict
Fixed warnings

GLM 0.9.3.B - 2011-12-12

Added support for Chrone Native Client
Added epsilon constant
Removed value_size function from vector types
Fixed roundEven on GCC
Improved API documentation
Fixed modf implementation
Fixed step function accuracy
Fixed outerProduct

GLM 0.9.3.A - 2011-11-11

Improved doxygen documentation
Added new swizzle operators for C++11 compilers
Added new swizzle operators declared as functions
Added GLSL 4.20 length for vector and matrix types
Promoted GLM_GTC_noise extension: simplex, perlin, periodic noise functions
Promoted GLM_GTC_random extension: linear, gaussian and various random number generation distribution
Added GLM_GTX_constants: provides useful constants
Added extension versioning
Removed many unused namespaces
Fixed half based type constructors
Added GLSL core noise functions

GLM 0.9.2.7 - 2011-10-24

Added more swizzling constructors
Added missing non-squared matrix products

GLM 0.9.2.6 - 2011-10-01

Fixed half based type build on old GCC
Fixed /W4 warnings on Visual C++
Fixed some missing l-value swizzle operators

GLM 0.9.2.5 - 2011-09-20

Fixed floatBitToXint functions
Fixed pack and unpack functions
Fixed round functions

GLM 0.9.2.4 - 2011-09-03

Fixed extensions bugs

GLM 0.9.2.3 - 2011-06-08

Fixed build issues

GLM 0.9.2.2 - 2011-06-02

Expend matrix constructors flexibility
Improved quaternion implementation
Fixed many warnings across platforms and compilers

GLM 0.9.2.1 - 2011-05-24

Automatically detect CUDA support
Improved compiler detection
Fixed errors and warnings in VC with C++ extensions disabled
Fixed and tested GLM_GTX_vector_angle
Fixed and tested GLM_GTX_rotate_vector

GLM 0.9.2.0 - 2011-05-09

Added CUDA support
Added CTest test suite
Added GLM_GTX_ulp extension
Added GLM_GTX_noise extension
Added GLM_GTX_matrix_interpolation extension
Updated quaternion slerp interpolation

GLM 0.9.1.3 - 2011-05-07

Fixed bugs

GLM 0.9.1.2 - 2011-04-15

Fixed bugs

GLM 0.9.1.1 - 2011-03-17

Fixed bugs

GLM 0.9.1.0 - 2011-03-03

Fixed bugs

GLM 0.9.1.B - 2011-02-13

Updated API documentation
Improved SIMD implementation
Fixed Linux build

GLM 0.9.0.8 - 2011-02-13

Added quaternion product operator.
Clarify that GLM is a header only library.

GLM 0.9.1.A - 2011-01-31

Added SIMD support
Added new swizzle functions
Improved static assert error message with C++0x static_assert
New setup system
Reduced branching
Fixed trunc implementation

GLM 0.9.0.7 - 2011-01-30

Added GLSL 4.10 packing functions
Added == and != operators for every types.

GLM 0.9.0.6 - 2010-12-21

Many matrices bugs fixed

GLM 0.9.0.5 - 2010-11-01

Improved Clang support
Fixed bugs

GLM 0.9.0.4 - 2010-10-04

Added autoexp for GLM
Fixed bugs

GLM 0.9.0.3 - 2010-08-26

Fixed non-squared matrix operators

GLM 0.9.0.2 - 2010-07-08

Added GLM_GTX_int_10_10_10_2
Fixed bugs

GLM 0.9.0.1 - 2010-06-21

Fixed extensions errors

GLM 0.9.0.0 - 2010-05-25

Objective-C support
Fixed warnings
Updated documentation

GLM 0.9.B.2 - 2010-04-30

Git transition
Removed experimental code from releases
Fixed bugs

GLM 0.9.B.1 - 2010-04-03

Based on GLSL 4.00 specification
Added the new core functions
Added some implicit conversion support

GLM 0.9.A.2 - 2010-02-20

Improved some possible errors messages
Improved declarations and definitions match

GLM 0.9.A.1 - 2010-02-09

Removed deprecated features
Internal redesign

GLM 0.8.4.4 final - 2010-01-25

Fixed warnings

GLM 0.8.4.3 final - 2009-11-16

Fixed Half float arithmetic
Fixed setup defines

GLM 0.8.4.2 final - 2009-10-19

Fixed Half float adds

GLM 0.8.4.1 final - 2009-10-05

Updated documentation
Fixed MacOS X build

GLM 0.8.4.0 final - 2009-09-16

Added GCC 4.4 and VC2010 support
Added matrix optimizations

GLM 0.8.3.5 final - 2009-08-11

Fixed bugs

GLM 0.8.3.4 final - 2009-08-10

Updated GLM according GLSL 1.5 spec
Fixed bugs

GLM 0.8.3.3 final - 2009-06-25

Fixed bugs

GLM 0.8.3.2 final - 2009-06-04

Added GLM_GTC_quaternion
Added GLM_GTC_type_precision

GLM 0.8.3.1 final - 2009-05-21

Fixed old extension system.

GLM 0.8.3.0 final - 2009-05-06

Added stable extensions.
Added new extension system.

GLM 0.8.2.3 final - 2009-04-01

Fixed bugs.

GLM 0.8.2.2 final - 2009-02-24

Fixed bugs.

GLM 0.8.2.1 final - 2009-02-13

Fixed bugs.

GLM 0.8.2 final - 2009-01-21

Fixed bugs.

GLM 0.8.1 final - 2008-10-30

Fixed bugs.

GLM 0.8.0 final - 2008-10-23

New method to use extension.

GLM 0.8.0 beta3 - 2008-10-10

Added CMake support for GLM tests.

GLM 0.8.0 beta2 - 2008-10-04

Improved half scalars and vectors support.

GLM 0.8.0 beta1 - 2008-09-26

Improved GLSL conformance
Added GLSL 1.30 support
Improved API documentation

GLM 0.7.6 final - 2008-08-08

Improved C++ standard conformance
Added Static assert for types checking

GLM 0.7.5 final - 2008-07-05

Added build message system with Visual Studio
Pedantic build with GCC

GLM 0.7.4 final - 2008-06-01

Added external dependencies system.

GLM 0.7.3 final - 2008-05-24

Fixed bugs
Added new extension group

GLM 0.7.2 final - 2008-04-27

Updated documentation
Added preprocessor options

GLM 0.7.1 final - 2008-03-24

Disabled half on GCC
Fixed extensions

GLM 0.7.0 final - 2008-03-22

Changed to MIT license
Added new documentation

GLM 0.6.4 - 2007-12-10

Fixed swizzle operators

GLM 0.6.3 - 2007-11-05

Fixed type data accesses
Fixed 3DSMax sdk conflict

GLM 0.6.2 - 2007-10-08

Fixed extension

GLM 0.6.1 - 2007-10-07

Fixed a namespace error
Added extensions

GLM 0.6.0 : 2007-09-16

Added new extension namespace mecanium
Added Automatic compiler detection

GLM 0.5.1 - 2007-02-19

Fixed swizzle operators

GLM 0.5.0 - 2007-01-06

Upgraded to GLSL 1.2
Added swizzle operators
Added setup settings

GLM 0.4.1 - 2006-05-22

Added OpenGL examples

GLM 0.4.0 - 2006-05-17

Added missing operators to vec* and mat*
Added first GLSL 1.2 features
Fixed windows.h before glm.h when windows.h required

GLM 0.3.2 - 2006-04-21

Fixed texcoord components access.
Fixed mat4 and imat4 division operators.

GLM 0.3.1 - 2006-03-28

Added GCC 4.0 support under MacOS X.
Added GCC 4.0 and 4.1 support under Linux.
Added code optimisations.

GLM 0.3 - 2006-02-19

Improved GLSL type conversion and construction compliance.
Added experimental extensions.
Added Doxygen Documentation.
Added code optimisations.
Fixed bugs.

GLM 0.2 - 2005-05-05

Improve adaptative from GLSL.
Add experimental extensions based on OpenGL extension process.
Fixed bugs.

GLM 0.1 - 2005-02-21

Add vec2, vec3, vec4 GLSL types
Add ivec2, ivec3, ivec4 GLSL types
Add bvec2, bvec3, bvec4 GLSL types
Add mat2, mat3, mat4 GLSL types
Add almost all functions

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Release notes

GLM 1.0.1 - 2024-02-26

Features:

Improvements:

Fixes:

GLM 1.0.0 - 2024-01-24

Features:

Improvements:

Fixes:

GLM 0.9.9.8 - 2020-04-13

Features:

Improvements:

Fixes:

GLM 0.9.9.7 - 2020-01-05

Improvements:

Fixes:

GLM 0.9.9.6 - 2019-09-08

Features:

Improvements:

Fixes:

Deprecation:

GLM 0.9.9.5 - 2019-04-01

Fixes:

GLM 0.9.9.4 - 2019-03-19

Features:

Improvements:

Fixes:

GLM 0.9.9.3 - 2018-10-31

Features:

Improvements:

Fixes:

GLM 0.9.9.2 - 2018-09-14

Fixes:

GLM 0.9.9.1 - 2018-09-03

Features:

Improvements:

Fixes:

GLM 0.9.9.0 - 2018-05-22

Features:

Improvements:

Fixes:

Deprecation:

GLM 0.9.8.5 - 2017-08-16

Features:

Fixes:

GLM 0.9.8.4 - 2017-01-22

Fixes:

GLM 0.9.8.3 - 2016-11-12

Improvements:

Fixes:

GLM 0.9.8.2 - 2016-11-01

Improvements:

Fixes:

GLM 0.9.8.1 - 2016-09-25

Improvements:

Fixes:

GLM 0.9.8.0 - 2016-09-11

Features:

Improvements:

Fixes:

Deprecation:

GLM 0.9.7.6 - 2016-07-16

Improvements:

Fixes:

GLM 0.9.7.5 - 2016-05-24

Improvements:

Fixes:

GLM 0.9.7.4 - 2016-03-19

Fixes: