Sets the draw order for script draw commands.
Examples from decompiled scripts:
GRAPHICS::SET_SCRIPT_GFX_DRAW_ORDER(7);
GRAPHICS::DRAW_RECT(0.5, 0.5, 3.0, 3.0, v_4, v_5, v_6, a_0._f172, 0);
GRAPHICS::SET_SCRIPT_GFX_DRAW_ORDER(1);
GRAPHICS::DRAW_RECT(0.5, 0.5, 1.5, 1.5, 0, 0, 0, 255, 0);