Brought up several times in our forums and elsewhere over the past few days has been VMware's Gallium3D driver that they use for guest 3D acceleration on their proprietary virtualization platform.
Compared to Oracle's VM VirtualBox graphics acceleration support that is quite slow for OpenGL and often unreliable or the limited attempts at OpenGL QEMU acceleration, VMware has a rather nice acceleration architecture built atop Gallium3D. Using Gallium3D at the heart of their graphics driver implementation across platforms shouldn't be surprising though since they bought out Tungsten Graphics in late 2008 and its these Mesa / Gallium3D drivers now developing VMware's graphics stack.
a non-profit public service built on providing help via live interaction with developers and hobbyists experienced with the OpenGL API as well as other areas of development.
The OpenGL graphics system is a software interface to graphics hardware. (The GL stands for Graphics Library.) It allows you to create interactive programs that produce color images of moving three-dimensional objects.
As complements to the core set of OpenGL functions, the OpenGL Utility Library (GLU) and the OpenGL Extension to the X Window System[tm] (GLX) provide useful supporting features.
devoted to game / 3D graphics programming with DirectX / OpenGL using C++. Contains downloadable source code for several small and very specific sample programs that I think will be very helpful to anyone trying to learn both 2D and 3D game programming.