OpenGL driver DLL doesn't represent the version we might need. For example:
- nvoglv32.dll (31.0.15.2756) is DLL version and 4.6.0 NVIDIA 527.56 is GL_VERSION. The version we need is 527.56.
- atioglxx.dll (6.14.10.13474) is DLL version and 4.5.13474 Compatibility Profile Context 22.19.163.1792 is GL_VERSION. The version we need is 22.19.163.1792.
Sometimes those versions match. But in each case GL_VERSION is enough for us because it contains a version which we might refer for a user. Also the DLL version is Windows only.