A $600 bounty came around a while back within the AROS (AROS Research Operating System) community to port Gallium3D and the Nouveau driver to this operating system that is a free software implementation of the AmigaOS 3.1 APIs. This bounty was successful in getting an OpenGL subsystem running on this free AmigaOS alternative via Mesa and Gallium3D and now a 2D architecture is also being implemented atop Gallium3D -- it sounds familiar to how the X.Org developers are implementing the Xorg state tracker to accelerate EXA and X-Video.
The ported Nouveau support extends from the GeForce 1 series GPUs up through the GeForce 9 series and includes automatic mode-setting using DDC, among other features. The AROS with the Nouveau graphics support is already available in the AROS nightly builds.
This AROS Nouveau-Gallium3D news can be read about at
AmigaWorld.net. The bounty can be found at
Power2People. Beyond Linux and the usual other operating systems, Haiku OS also
hopes to use Gallium3D.