GEGL (Generic Graphics Library) is a graph based image processing
framework that will be used in all GIMP-3.0. With GEGL, the internal
processing is being done in 32bit floating point linear light RGBA. By
default the legacy 8bit code paths are still used, but a curious user can
turn on the use of GEGL for the color operations with this option.
In addition to porting color operations to GEGL, an experimental GEGL
Operation tool has been added, found in the Tools menu. It enables
applying GEGL operations to an image and it gives on-canvas previews of
Please note that GIMP remains 8-bits until GEGL
covers the whole application.
8.5.1. Activating the option
You can access this option from the image menubar through
Clicking on this item toggles the use of GEGL.