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GFM is a lightweight library to ease the creation of video games / multimedia applications with the D programming language.

Documentation and overview can be found here:


Public Domain (Unlicense).

How to use GFM?

Add the sub-package you are interested in in your dub.json:

      "dependencies": {
        "gfm:math": "~>3.0"

See the examples/ directory, or as an example of a game.



You absolutely don't need to use the whole of GFM. Pick just what you need to minimize the amount of dependencies.

GFM dependencies

There is an ongoing work to delete things in GFM that exist elsewhere but better. See to discover lots of useful libraries for your programs.

Design goals

  • Give some more power to the library user providing code that will probably need to be written anyway.
  • Each module / sub-package is maximally decoupled.
  • Logging interface for everything that has a logging callback.
  • Correctness and functionality are favoured over speed.
  • Wrappers are transparent layers that expose the C libraries objects, turn every error code into an D exception and makes it easier to use the library correctly. They do almost nothing and perhaps you don't need them.

Why use GFM?

In the D1 days, I created several multimedia applications:

This all came with some insight with how to do OpenGL applications in D. During this time I became acutely aware that my quick & dirty coding style wouldn't cut it in the long run. GFM is the clean successor library to the unfortunate code I was using at this time.