function scr_marker_fogblend(arg0, arg1, arg2, arg3 = 1, arg4 = 32768, arg5 = 1, arg6 = 1, arg7 = 0, arg8 = 0, arg9 = 16777215, arg10 = depth, arg11 = false, arg12 = -1, arg13 = 1)
{
    var thismarker = instance_create(arg0, arg1, obj_marker_fogblend);
    with (thismarker)
    {
        depth = arg10;
        sprite_index = arg2;
        image_speed = arg7;
        image_xscale = arg5;
        image_yscale = arg6;
        image_index = arg8;
        image_blend = arg9;
        image_alpha = arg13;
        if (arg11)
            scr_depth_alt();
        blend = arg3;
        color = arg4;
    }
    if (arg12 > 0)
        scr_doom(thismarker, arg12);
    return thismarker;
}

function scr_afterimage_fogblend(arg0 = 1, arg1 = 32768, arg2 = 30)
{
    var _fogblend = instance_create(x, y, obj_marker_fogblend);
    _fogblend.sprite_index = sprite_index;
    _fogblend.image_alpha = image_alpha;
    _fogblend.image_angle = image_angle;
    _fogblend.image_blend = image_blend;
    _fogblend.image_index = image_index;
    _fogblend.image_speed = image_speed;
    _fogblend.image_xscale = image_xscale;
    _fogblend.image_yscale = image_yscale;
    _fogblend.mask_index = mask_index;
    _fogblend.blend = arg0;
    _fogblend.color = arg1;
    with (_fogblend)
        scr_lerpvar("image_alpha", image_alpha, 0, arg2);
    scr_doom(_fogblend, arg2 + 1);
    return _fogblend;
}