The patched wine allows to run any D3D9 applications with nearly no CPU overhead, which provides a smother gaming experience and increased FPS. To achieve a low CPU overhead a new library, called d3d9-nine.dll, talks directly to the graphics driver. You must "activate" that library to be used instead of the wine default d3d9.dll.

• A Gallium-based graphics driver (this means using Mesa, with llvmpipe, nouveau, r600, or radeonsi). The AMD and NVIDIA closed source drivers are not supported.
• The Gallium nine state tracker (this means using Mesa), usually provided by mesa-libd3d / mesa.
• A X11 compatible desktop environment
• D3D9 applications, like Windows games

A detailed explanation can be found in the Branch-description page:

Branch-description

If you are looking for pre-build packages, have a look at the Releases page:

Releases

If you want to use an Ubuntu PPA, please see the Installing-from-PPA page:

Installing-from-PPA

If you are looking for how to build wine addon packages, have a look at the Creating-wine-addon-packages page:

Creating-wine-addon-packages

Please report bugs on https://github.com/iXit/Mesa-3D/issues