This version fixed half scalars and half vectors arithmetics. This is a really slow practice that should be avoid. Half floating point value should be use only to store GPU data. GPUs have native support for half values, not x86 CPUs.

This version is a really minor updates, fixing single issue with half float types.

This version fixes few bugs and provides an major update of the manual thanks to Damian Trebilco.

This new version mainly adds support for Visual Studio 2010 and GCC 4.4. It also provides various code optimization, bug fixes and an extension.

Fixed extension bugs introduced by core update.

Fixed varius bugs. Move determinant fonction to core following GLSL 1.5 specification.

Fixed varius bugs.

Add GLM_GTC_quaternion and GLM_GTC_type_precision extensions both subset of GLM_GTX_quaternion and GLM_GTX_number_precision

The old way to use extensions have been fixed and GLM_GTX_bit extension gets updated with more functions to manipulate bit fields.

This version brings to main changed: Stable extensions and a new extension system.

The first stable GLM extensions are: GLM_GTC_double_float and GLM_GTC_half_float for higher and lower vectors and matrices floating point precision. GLM_GTC_matrix_operation provides determinant and inverse matrix calculation. GLM_GTC_matrix_transform allows to build scale, rotate and translate matrices and GLM_GTC_matrix_projection provides varius functions to build projection matrices. Few stable extensions yet but the number is going to grow with the next release!

Both GLM 0.8.2.x extensions use method are deprecated (but still working) and replace by a new one. If you wnat to use GLM_GTC_half_float just include "glm/gtc/half_float.hpp" and it is going to be included in GLM namespace.

Finally, quite some file have been renamed, using "hpp" instead of ".h". Old file have been deprecated but are still available so that GLM 0.8.3.0 is fully compatible with GLM 0.8.2.x.

A new release is available and inogurate a patch number. The goal of this patch number is to release faster fixes from bug reports.

This release only fixes bugs. Left sided swizzle operators, quaternion operators, vectors access operators for the main onces.

Some artifacts have been added to the tracker to give a picture of what you could expect for the next releases.

If you need something else you can add some artifacts to the tracker. Any comment on added entries is welcome.

Furthermore, no more release of GLM 0.7.x will be done. Please upgrade to GLM 0.8.1.

Finally, a pack of programmable oriented OpenGL samples using GLM is under development and planed to be release in December.

GLM 0.8.1 is released. This new version mainly fixes 64 bit integers with GCC and various bugs.

GLM 0.8.0 is released. This new version is now based on GLSL 1.30 specification which provided new functions and precision qualifiers.

Beyond this, lot of changes have been done to make GLM easier to use, easier to develop, more reliable, more conform to C++ ISO98 standard and GLSL specifications.

It involves that GLM 0.8.x is not backward compatible with GLM 0.7.x... However, an application port from GLM 0.7.x to GLM 0.8.x isn't a huge work and actually for some, it won’t be work at all.

On GLM core side, based on GLSL features, vector types can't be automatically cast to pointer anymore for code safety purposes. Vector constructors require a single scalar parameter of the exact number of components.

On GLM extension side, the mechanism to use them has changed. The old [__]***GTX way doesn't exist anymore. Have a look on the manual for more information.

Have a look on the manual and the changelog for more information. Don't forget to send your feedback and enjoy!

Ambient aperture lighting Humus demo have been updated to use GLM as math library.

As you can see the website get a little update to prepare GLM 0.8.0 final release.

GLM 0.8.0 final should be release during the week.

This release fixes some bugs and add few features though extensions. The development is now based on CMake to make easier cross platform tests and project management.

This release mainly improves half float vectors support. By default the low precission vectors are based on float numbers not on half numbers

It also provides new setup options. GLM_USE_ONLY_XYZW to disable multiple names to access to a single vector component. GLM_USE_ANONYMOUS_UNION to allow multiple component names on half vectors with Visual C++.

Various bugs and updates of extensions have been done too. Final release is coming...

GLM have been updated to support GLSL 1.30. API documentation had significant improvements to make easier finding of GLSL functions and types.

GLM 0.8.x is NOT backward compatible with GLM 0.7.x. Upgrade to GLM 0.8.x could involve build errors for the following cases: A lot of improvements have been made to increase the conformance with GLSL specification. Lot of GLSL 1.30 features were already exposed in extensions that have been deleted. The extension syntaxe based on ARB convension is no long used.

Due to the number of changes GLM 0.8.0 is release as beta first. The final release is schedule for october.

GLM 0.7.6 provides a better C++ conformance so that you can build GLM with –pedantic G++ parameter or without Visual Studio extensions. To make GLM more reliable, BOOST_STATIC_ASSERT are used according developer wishes.

GLM 0.7.5 is available and introduces a new build messsage system to get information of GLM build configuration with Visual Studio. This mechanism is documented in section 6 of GLM manual. Also, GLM can be built with GCC pedantic options.

GLM 0.7.4 introduces a new system to manage external dependencies.

It allows developing extension using external dependencies like GLEW, Boost, etc. without making required those dependencies for GLM programmer that doesn't need those external dependent extensions.

The mechanism is described into the updated manual.

GLM 0.7.3 is released. This version fixes few bugs and add few extensions

GLM 0.7.2 is released. The documentation have been completed again and several issues handle with precompiler options.

#define GLM_SWIZZLE GLM_SWIZZLE_FUNC allows to use swizzle operators with internal functions. For example, glm::vec3(1, 2, 3).zyx is replaced by glm::vec3(1, 2, 3)._zyx() with this option.

#define GLM_FORCE_NO_HALF allows to include all extensions (#include "glm/glmext.h") without any support of half-precision floating-point numbers.

#define GLM_AUTO_CAST GLM_DISABLE allows to disable automatic cast (eg: glLoadMatrixf(glm::mat4(1.0))) which could involve unfortunate issues in some cases.

More information on these topic are available in GLM manual section 5 "Known issues".

GLM 0.7.1 is available under MIT license. It fixes bugs with GCC.

GLM 0.7.0 is available under MIT license. LGPL lisence have been discard due to an issue of use for console development. This release contains a lot better documentation based on Doxygen. Lot of bugs have been fixed and the documentation completed. Thanks to all people that has contributed thought bug reports and ideas to make this version a lot better!

GLM 0.6.4 is available and fixes some swizzle operator issues.

GLM 0.6.3 fixes accesses of matrices and a 3DSMax SDK conflict.

GLM 0.6.2 fixes an error on an extension.

GLM 0.6.1 is a minor update that fix an issue on extension namespace and add two more extensions.

GLM 0.6.0 is available. For this release, work focus on extensions. A new mecanisum allows to integrate GLM extensions as it is actually done for GLSL extension by vendors. Lot of new extensions have been added.

This release fixes some issues with swizzle operators.

A new sample is available. It's an update of Philip Rideout's Catmull Clark subdivision program that uses GLM. Released with pleasant permission of Philip Rideout.

This release include GLSL 1.2 new feature in the core implementation. Also, it includes swizzle read and write operators and a custom options system to setup GLM.

It includes some new extensions to extend GLSL features but they remain experimental. The next release should provide the first stable extensions.

The GLM 0.5.0 packages contain some basic samples and some documentation. The ray tracer sample has been updated to GLM 0.5.0. Except for specific cases, especially with extensions, GLM 0.5 is backward compatible.

Now, GLM development is taking advantages of SourceForge.net services: a bug tracker system and the development source code is publicly available on SF.net SVN server.

A GLM update is available. It simply includes some examples for a sweet start with GLM.

The examples show how to use GLM with OpenGL intermediate mode and OpenGL vertex arrays. Also, they show how to use GLM extensions to replace GLU and OpenGL function witch could slightly increase performances by decreasing the number of OpenGL states changes.

This release introduces first GLSL 1.2 features as planed. Also, various new extensions have been added and updated. Finally, it's not anymore required to include windows.h before glm.h when windows.h is required.

The number of features of GLM, including extensions, start to really increase the compilation time. That's why it's recommended to use precompiled headers.

Version 0.4 will complete matrices and vectors operators and will add GLSL 1.2 features. First, conversions simplifications will be integrated. Then, 4 per 3 matrices and outer product will be available from extensions. The transpose function is already available from extension.

Version 0.5 will integrate GLSL 1.2 features to GLM core.

Version 0.6 will add swizzle operators in reading and writing. (eg: vec3 v1(1.0, 2.0, 3.0); vec3 v2 = v1.xxx; v1.zyx = v;).

This release corrects two main bugs. First, a bug of the imat4 and mat4 division operators and other correct the vectors components access from texture coordinate way.

This update adds GCC 4.0 support for MacOS X and Linux and GCC 4.1 under Linux. Also, its provides some optimisations.

Further release will prodive GLSL 1.2 compliances.

A new release of GLM is now available. It improves GLSL data type conversion and construction compliance. Also, It's adds extensions like some to manage double-precision and half-precision float numbers. Finally a Doxygen documentation has been added.

This new release have been tested under Visual C++ 7.1, Visual C++ 8.0, GCC 3.2.3 et GCC 3.4.2.

A new release of GLM is now available. A few bugs have been fixed, the portability of GLSL into C++ has been improved, and new experimental extensions have been implemented, enhancing GLSL features.

Project now supports quaternions, adds new features to handle colors, vectors and matrices. For example, GLM allows base colors changing, vector projected operations, and 2D/3D transforms.

To demo the features of this new version, a sample program is included. It is a simple Ray Tracer supporting reflected and refracted rays, three lights types (point, directionnal and spot), two objects types (sphere, plan), using all of the GLM possibilities.

The english section of this site is now available.

This is the first public availability of GLM. This library supports part of GLSL specifications : All vectors and matrices types, and all the operators and associated functions.

For now, there isn't detailed documentation, but you can freely have a look on GLSL specifications. Consider any incoherence with GLM as an error. Keep in mind the library is included in the namespace "glm".

This project is multi platform and was successfully tested under Visual C++ 7.1, MinGW 3.4 and GCC 3.4.