bsp never hat proprietry restrictions.
But you needed licenses to use the bsp compiler
but that is long time past now ... Valves as IDs bsp compiler can be used now, Hammer 3.4 is even a +- official tool for the torque engine with the official OK from valve ...
the usage of the format never was prprietry ... otherwise DBP and B3D would support it
But you needed licenses to use the bsp compiler
but that is long time past now ... Valves as IDs bsp compiler can be used now, Hammer 3.4 is even a +- official tool for the torque engine with the official OK from valve ...
the usage of the format never was prprietry ... otherwise DBP and B3D would support it