GEGL Porting Plan
=================

This file describes a detailed plan for how we will integrate GEGL
into GIMP. Please update it with your own ideas and findings.

Porting GIMP to GEGL will be a multi-stage process. On a high level,
the stages are:

Stages:
=======

 1. Implement GIMP's 8 bpc code with GEGL data structures
 2. Gradually port GIMP's 8 bpc code to 32 bpc
 3. Once the GIMP base layer (almost) only knows 32 bpc and GEGL, add
    goodies like adjustment layers and layer effects on top


First stage:
------------

 1. Kill Tile and TileManager
 2. Change PixelRegion::tiles : TileManager * to PixelRegion::gegl_buffer : GeglBuffer *
 3. Map PixelRegion::gegl_buffer of type RGBA float to PixelRegion::data of type RGBA u8
 4. Implement functions like scale_region() with GEGL (for the
    gegl_buffer case. For the data case, we can keep the old code)
 5. ???


Second stage:
-------------

 1. ???


Third stage:
------------

 1. ???