var _man = 126;
if (!instance_exists(_man))
{
    scr_debug_print("CASTLEREFLECT MANAGER MISSING. DESTROYING.");
    instance_destroy();
    exit;
}
if (is_culled)
    exit;
generate_tiles();
var ys = scr_platswap_yscale();
var _final_alpha = 0.5 * image_alpha * (1 - ys[0]);
if (_final_alpha <= 0)
    exit;
draw_set_blend_mode(bm_add);
var _has_ts = surface_exists(tilesurf);
var _has_os = surface_exists(_man.surf);
var _has_ms = surface_exists(_man.masking_surf);
if (_has_ts && _has_os && _has_ms)
{
    shader_replace_simple_set_hook(6);
    var _cx = camera_get_view_x(view_camera[0]);
    var _cy = camera_get_view_y(view_camera[0]);
    var _uvs = _man.surface_uvs;
    shader_set_uniform_f_array(u_bounds, [_cx / room_width, _cy / room_height, 640 / room_width, 480 / room_height]);
    var t_sampler = shader_get_sampler_index(shd_castlereflect_layerblend, "u_object_surface");
    texture_set_stage(t_sampler, surface_get_texture(_man.surf));
    var t_mask = shader_get_sampler_index(shd_castlereflect_layerblend, "u_mask_surface");
    texture_set_stage(t_mask, surface_get_texture(_man.masking_surf));
    shader_set_uniform_f_array(u_uvs, [_uvs[0], _uvs[1], _uvs[2] - _uvs[0], _uvs[3] - _uvs[1]]);
    var _uvs2 = texture_get_uvs(surface_get_texture(tilesurf));
    shader_set_uniform_f_array(u_uvs2, [_uvs2[0], _uvs2[1], _uvs2[2] - _uvs2[0], _uvs2[3] - _uvs2[1]]);
    var _uvs3 = texture_get_uvs(surface_get_texture(_man.masking_surf));
    shader_set_uniform_f_array(u_uvs3, [_uvs3[0], _uvs3[1], _uvs3[2] - _uvs3[0], _uvs3[3] - _uvs3[1]]);
    draw_surface_ext(tilesurf, x, y, 1, ys[1], 0, c_white, 1 - ((1 - _final_alpha) * (1 - _final_alpha)));
    shader_replace_simple_reset_hook();
}
else if (_has_ts && !_has_os)
{
    draw_surface_ext(tilesurf, x, y, 1, ys[1], 0, c_white, _final_alpha);
}
else if (_has_os && !_has_ts)
{
    draw_surface_part_ext(_man.surf, x - _man._cx, y - _man._cy, sprite_width, sprite_height, x, y, 1, ys[1], 16777215, _final_alpha);
}
draw_set_blend_mode(bm_normal);