depth = 5;
if (bluramt > 0)
{
    var _finalblur = bluramt * scr_wave(0.8, 1.5, 1, 0);
    var blurshader = 16;
    var u_tex_size = shader_get_uniform(blurshader, "texture_size");
    var u_blur_radius = shader_get_uniform(blurshader, "blur_radius");
    if (!surface_exists(blursurf))
        blursurf = surface_create(640, 480);
    surface_set_target(blursurf);
    draw_clear(c_black);
    draw_surface(application_surface, 0, 0);
    surface_reset_target();
    shader_replace_simple_set_hook(blurshader);
    shader_set_uniform_f(u_tex_size, 640, 480);
    shader_set_uniform_f(u_blur_radius, floor(_finalblur));
    var _xx = scr_wave(-3, 3, 3, 0);
    var _yy = scr_wave(4, -4, 5, 0);
    draw_surface_ext(blursurf, camerax() + _xx, cameray() + _yy, 1, 1, 0, c_white, 0.75);
    draw_surface_ext(blursurf, camerax() - (_xx * 2), cameray() - (_yy * 2), 1, 1, 0, c_white, 0.15);
    shader_replace_simple_reset_hook();
}