Summary: Mesa 3D is a collection of graphics libraries and drivers that implement hardware-accelerated OpenGL 3. It comes with its own software emulation fallback driver though. Besides OpenGL and OpenGL ES, it implements OpenVG and EGL, but also allows for Direct3D interfaces.
Summary: This build of the Mesa3D Graphics Library consits of Mesa, Gallium and llvmpipe. It provides a significant performance boost for systems with no OpenGL hardware acceleration. It can replace the OGL driver on your system - this can be set during setup or via the OpenGL Configuration control panel applet.