It might be possible to copy the rendering context from one thread to the other.Originally posted by marcus256:
"A rendering context can be current to only one thread at a time. You cannot make a rendering context current to multiple threads."
By definition, "being current" would mean that all you have to do is make sure that you don't make the same RC be current (wglMakeCurrent) in both threads.
It might work, but I have never done this.