* 'extra_params' is an optional object that can have the following fields:
*
* 'archive_location_filter':
* Filter function that will run for each archive path.
*
* 'unsupported_webgl_callback':
* Function that is called if WebGL is not supported.
*
* 'engine_arguments':
* List of arguments (strings) that will be passed to the engine.
*
* 'persistent_storage':
* Boolean toggling the usage of persistent storage.
*
* 'custom_heap_size':
* Number of bytes specifying the memory heap size.
*
* 'disable_context_menu':
* Disables the right-click context menu on the canvas element if true.
*
* 'retry_time':
* Pause before retry file loading after error.
*
* 'retry_count':
* How many attempts we do when trying to download a file.
*
* 'can_not_download_file_callback':
* Function that is called if you can't download file after 'retry_count' attempts.
and, in your engine_template.html, modify this section to add your extra params:
Please repor with results! We’re happy to update the defaults if it helps. Also if anyone want to take a stab at the loader code itself we can integrate the changes as well.