Question: I am creating a mobile app using Unity. I would like to place a photo which fills the screen and then place some 3D objects on top of this photo. The photo is created during runtime and is saved to the persistance data folder.
What is the best method to achieve this? The options I see are Raw Image/Image/Sprite. However, I have been unable to achieve the above mentioned goal using either of these component types.

Answer: 
Finally I have figured it out and got the final solution after reading many many articles and documents.

Here is my code

```
/**
 * Add ACF thumbnail columns to Linen Category custom taxonomy
 */
function add_thumbnail_columns($columns) {
    $columns['linen_thumbnail'] = __('Thumbnail');
    // Enable the single line of code below if you want the Thumbnail at the end.
    //return $columns;

    // Code below will make the Thumbnail in the front.
    // Code start
    $new = array();
    foreach($columns as $key => $value) {
        if ($key=='name') // Put the Thumbnail column before the Name column
            $new['linen_thumbnail'] = 'Thumbnail';
        $new[$key] = $value;
    }
    return $new;
    // Code end
}
add_filter('manage_edit-linen_category_columns', 'add_thumbnail_columns');

/**
 * Output ACF thumbnail content in Linen Category custom taxonomy columns
 */
function thumbnail_columns_content($content, $column_name, $term_id) {
    if ('linen_thumbnail' == $column_name) {
        $term = get_term($term_id);
        $linen_thumbnail_var = get_field('cat_thumb', $term);
        $content = '<img src="'.$linen_thumbnail_var['url'].'" width="60" />';
        }
    return $content;
}
add_filter('manage_linen_category_custom_column' , 'thumbnail_columns_content' , 10 , 3);

```

Reference:

* [Plugin API/Filter Reference/manage $taxonomy id columns | WordPress
Document](https://codex.wordpress.org/Plugin_API/Filter_Reference/manage_$taxonomy_id_columns)
* [Function Reference/get term | WordPress Document](https://codex.wordpress.org/Function_Reference/get_term)
* [Adding fields to a taxonomy term | ACF Document](https://www.advancedcustomfields.com/resources/adding-fields-taxonomy-term/)
* [Image | ACF Document](https://www.advancedcustomfields.com/resources/image/)
* [WordPress Sortable Admin Columns for Custom Posts | Acticle](https://www.ractoon.com/2016/11/wordpress-custom-sortable-admin-columns-for-custom-posts/)
* [Change the order of columns for a custom post type on the admin list
page | StackExchange](https://wordpress.stackexchange.com/questions/101728/change-the-order-of-columns-for-a-custom-post-type-on-the-admin-list-page)
Try to change from: 

```
$linen_thumbnail_var = get_field('cat_thumb', $term);

```

to

```
$linen_thumbnail_var = get_field('cat_thumb', $term->taxonomy . '_' . $term->term_id);

```

This will help you.