Manually instantiating Glide using a different class (use with this Gist - https://gist.github.com/alchemydigital/2e3a2b7261e36003e42f). Basically the same as the manual setup in the docs, except with a different Server class - http://glide.thephpleague.com/config/the-server/.

gistfile1.php

<?php
// Set image source
$source = new League\Flysystem\Filesystem(
    new League\Flysystem\Adapter\Local('path/to/source/folder')
);

// Set image cache
$cache = new League\Flysystem\Filesystem(
    new League\Flysystem\Adapter\Local('path/to/cache/folder')
);

// Set image manager
$imageManager = new Intervention\Image\ImageManager([
    'driver' => 'imagick',
]);

// Set manipulators
$manipulators = [
    new League\Glide\Api\Manipulator\Orientation(),
    new League\Glide\Api\Manipulator\Rectangle(),
    new League\Glide\Api\Manipulator\Size(2000*2000),
    new League\Glide\Api\Manipulator\Brightness(),
    new League\Glide\Api\Manipulator\Contrast(),
    new League\Glide\Api\Manipulator\Gamma(),
    new League\Glide\Api\Manipulator\Sharpen(),
    new League\Glide\Api\Manipulator\Filter(),
    new League\Glide\Api\Manipulator\Blur(),
    new League\Glide\Api\Manipulator\Pixelate(),
    new League\Glide\Api\Manipulator\Output(),
];

// Set API
$api = new League\Glide\Api\Api($imageManager, $manipulators);

// Setup Glide server
$server = new Your\App\Namespace\Server($source, $cache, $api);