surface_set_target(surface_room_original)
draw_set_blend_mode(3)
draw_sprite_ext(spr_mask_clock_transition, mask_image_index, 0, 0, (surface_get_width(application_surface) / 320), (surface_get_height(application_surface) / 240), 0, c_white, 1)
draw_set_blend_mode(0)
surface_reset_target()
draw_surface_ext(surface_room_original, 0, 0, (320 / surface_get_width(application_surface)), (240 / surface_get_height(application_surface)), 0, c_white, 1)