WineD3D is the component of Wine that implements a replacement for Microsoft Direct3D. WineD3D works as a wrapper for Direct3D calls, and relies on OpenGL for the actual rendering job.

Although primarily designed for use in Wine, WineD3D can also be used on native Windows. This has a number of advantages over using Microsoft Direct3D:

This site provides pre-packaged builds of WineD3D.

Latest version (Installer): http://download.savannah.nongnu.org/releases/wined3d/latest/wined3d.exe
Latest version (CD image): http://download.savannah.nongnu.org/releases/wined3d/latest/wined3d.iso
Full directory (with older versions, patches...): http://download.savannah.nongnu.org/releases/wined3d
Project page at Savannah (source code, etc): http://savannah.nongnu.org/projects/wined3d