How to run Black Mesa via optirun?

Question

linux

Actually, optirun% command% is written in the game parameters, but when launched, the console returns an error:

[VGL] ERROR: VirtualGL attempted to load the real
[VGL]   glXCreatePbuffer function and got the fake one instead.
[VGL]   Something is terribly wrong.  Aborting before chaos ensues.

Actually where to dig then?

Answer 1

The internets say try primusrun instead of optirun. Does not help?