Distorted Android

 * At this moment the 'buffer' contains a) preprocessed object b) real object rendered 'on top' of

 * the preprocessed one.

 * Postprocess buffer. What this means exactly depends on the effect -

 * Only for use by the library itself.

 *

 * @y.exclude

   * Do we render the object directly to the final surface, and only postprocess and then blit its

   * 'halo', or do we render the object along with its halo to the intermediate framebuffer and

   * postprocess it as well?

   * Only for use by the library itself.

   *

   * @y.exclude