Didn’t test on a Mac, I am on a Windows machine in this moment with NVidia GPU.
@neilcsmith I realized that GLSL is like Java (write once, test anywhere). But I think is something related to Processing itself, as if I compile the same identical shader in WebGL it compiles on any OS/GPU combination. Might be how Three.js handles the compilation? Or the compiler in that case acts differently?
@hamoid I replied in the other topic (actually there was a documentation, not sure if that was very recent actually)