OpenGL example in Clojure using LWJGL version 326 May 2023
Some time ago I published a minimal OpenGL example in Clojure using LWJGL version 2. I used LWJGL 2 because it is available as a Debian package unlike version 3. However one can get LWJGL 3.3.2 with native bindings from the Maven Central Repository.
Note that LWJGL version 3 consists of several packages. Furthermore most packages have native bindings for different platforms. See LWJGL customization page for more information. There is a Leiningen LWJGL project example by Roger Allen which shows how to install all LWJGL libraries using Leiningen. However here we are going to use the more modern approach with a deps.edn file and we are going to use more efficient OpenGL indirect rendering.
The deps.edn file uses symbols of the form <groupID>/<artifactId>$<classifier> to specify libraries. For LWJGL version 3 the classifier is used to install native extensions. The deps.edn file for installing LWJGL with OpenGL and GLFW under GNU/Linux is as follows:
There are more native packages for lwjgl-opengl such as natives-windows and natives-macos.
Displaying a window with GLFW instead of LWJGL 2 is a bit different. The updated code to use lwjgl-glfw and lwjgl-opengl to display a triangle with a small texture is shown below:
If you download the two files, you can run the code as follows:
It should show a triangle like this:
Any feedback, comments, and suggestions are welcome.