Create Event:

• execute code:

  if instance_number(object_index) > 1 then instance_destroy()
  if !variable_global_exists('pscale') global.pscale = true
  // find if there's "job" to do here as such:
  exists = global.pscale
  if (exists) {
      screen = surface_create(view_wview, view_hview)
      // fallback if surfaces are not supported:
      if (!surface_exists(screen)) exists = false
  }
  // nothing to do here for a reason:
  if (!exists) {
      instance_destroy()
      exit
  }
  // find scaling parameters:
  scale_x = view_wport / view_wview
  scale_y = view_hport / view_hview
  // create min-depth helper instance:
  scale_inst = instance_create(x, y, obj_pscale2)
  scale_inst.scale_x = scale_x
  scale_inst.scale_y = scale_y
  scale_inst.scale_inst = id
  

Destroy Event:

• execute code:

  // don't forget to clean-up:
  surface_free(screen)
  

Draw Event:

• execute code:

  d3d_transform_set_identity()
  // If you are porting this example back to GM6/GM7, uncomment code below.
  // For some reason things work differently there.
  /*
  d3d_transform_add_translation(-view_xview, -view_yview, 0)
  surface_set_target(screen)
  if background_showcolor draw_clear(background_color)
  */
  

Draw Event:

• execute code:

  /* this object serves for drawing surface
     with game graphics to screen, scaled. */
  // reset drawing target and draw scaled surface:
  surface_reset_target()
  d3d_transform_set_identity()
  // if main scaling instance is gone, destroy this one too:
  if (!instance_exists(scale_inst)) {
      instance_destroy()
  } else {
      draw_surface_ext(scale_inst.screen, 0, 0, scale_x, scale_y, 0, c_white, 1)
      surface_set_target(scale_inst.screen)
  }