You can use this function, it takes the index of the driver you wish to use.
Also, the following functions can be used to obtain information about the driver(s)
Blitz3DSDK.SetGfxDriver(driver_index);
Also, the following functions can be used to obtain information about the driver(s)
Blitz3DSDK.GfxDriver3D(driver_index); Blitz3DSDK.GfxDriverCaps3D(); Blitz3DSDK.GfxDriverName(driver_index);