What's a Game Developers Conference without some sweet new tools for developers to sink their teeth into? Khronos Group, the association behind OpenGL, has today announced the fourth generation of its cross-platform API spec, which takes up the mantle of offering a viable competitor to Microsoft's DirectX 11. The latest release includes two new shader stages for offloading geometry tessellation from the CPU to the GPU, as well as tighter integration with OpenCL to allow the graphics card to take up yet more duties off th