fogl

fortran bindings for OpenGL.

Setup

You need the gl.xml file provided by Khronos to generate the bindings. The download_gl_xml.py script will do this for you, but it requires the requests module (generating the bindings doesn't have any dependencies, so this setup can be skipped if you just want to get the xml file yourself). Create a python environment and install the dependencies.

python3.12 -m venv env
source env/bin/activate
pip install -r requirements.txt

Then download the xml file by running

python scripts/download_gl_xml.py

This will put gl.xml in the root directory.

Generate Bindings

To generate the bindings, you can then run

make

This will create a file called gl_bindings_33.f90 in the root directory. This can then be included in a fortran application to use OpenGL. This runs the following python script:

python scripts/gen_gl_fortran.py --xml gl.xml --version 3.3 --profile core --out gl_bindings_33.f90 --strict-missing

If you would like to change any of the arguments then you can run with your modifications

python scripts/gen_gl_fortran.py --xml </path/to/gl.xml> --version <opengl-version> --profile <opengl-profile> --out <output-file-name> --strict-missing

Running the demo

There is a demo (the triangle) in the demo directory. After generating the bindings, you can build and run the demo with

make demo
make run