Hi OrganicBytes, Parallels virtual machine (Windows, Linux and OS X) uses OpenGL version that Host OS have on board, but not higher than 2.1 In case you can't use an app that should work fine with OpenGL 2.1, most likely that OS X on your Mac is outdated. It can be easily checked by OpenGL Extensions Viewer. Please refer to this article to know more about Open GL support.
No, it's OpenGL 2.1 the software is using. It's works fine on my Mac OS X 10.11 but not in my instance of Mavericks in Parallels.