xlibosmesa4 6.8.2-10.4 (ia64 binary) in ubuntu hoary

 Mesa is a 3D graphics library which presents an API intended to be compatible
 with OpenGL. X.Org maintains its own version of the Mesa library (which is
 regularly resynchronized with the official one) to permit development of the
 X.Org X server's Direct Rendering Infrastructure (DRI), which makes the 3D
 acceleration features of many modern video cards available to X client
 programmers.
 .
 The off-screen rendering library (OSMesa) is an extension to Mesa, not an
 implementation of any OpenGL standard; therefore, it is packaged separately,
 so that any OpenGL-conformant library may be installed on a Debian system,
 and OpenGL-based programs may depend on any of them. The OSMesa library,
 however, specifically depends on the Mesa library.