[Pharo-project] gl/cl interop

Hi, I'm new to Pharo & interested in doing some OpenCL + OpenGL for visualization. Looking around I'm confused by the differences between the various OpenGL libs and Alien vs FFI vs NativeBoost. Years ago I did some OpenGL-based GPGPU work in Squeak (OpenCobalt), but that's all out of date I think. For interop I need to get hold of the current gl context (e.g.glxGetCurrentContext), but according to other threads here that's not so easy in Squeak or Pharo. I tried NativeBoost but it didn't have a Linux implementation. What's the best way to proceed ?