If I choose standard OpenGL, it exits the game.
If I choose "3dfx OpenGL", it exits and re-enters the game, as if trying to change the game mode, but when it re-enters, it's in Software Rendering mode again.
If I choose "3dfx OpenGL", it exits and re-enters the game, as if trying to change the game mode, but when it re-enters, it's in Software Rendering mode again.