// Filename: textureReloadRequest.cxx
// Created by:  drose (12Aug08)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University.  All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license.  You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////

#include "textureReloadRequest.h"
#include "textureContext.h"

TypeHandle TextureReloadRequest::_type_handle;

////////////////////////////////////////////////////////////////////
//     Function: TextureReloadRequest::do_task
//       Access: Protected, Virtual
//  Description: Performs the task: that is, loads the one model.
////////////////////////////////////////////////////////////////////
AsyncTask::DoneStatus TextureReloadRequest::
do_task() {
  // Don't reload the texture if it doesn't need it.
  if (_texture->was_image_modified(_pgo)) {
    double delay = async_load_delay;
    if (delay != 0.0) {
      Thread::sleep(delay);
    }
    
    if (_texture->was_image_modified(_pgo)) {
      if (_allow_compressed) {
        _texture->get_ram_image();
      } else {
        _texture->get_uncompressed_ram_image();
      }

      // Now that we've loaded the texture, we should ensure it
      // actually gets prepared--even if it's no longer visible in the
      // frame--or it may become a kind of a leak (if the texture is
      // never rendered again on this GSG, we'll just end up carrying
      // the texture memory in RAM forever, instead of dumping it as
      // soon as it gets prepared).
      _texture->prepare(_pgo);
    }
  }
  _is_ready = true;

  // Don't continue the task; we're done.
  return DS_done;
}