How to Rotate a Vertex by a Quaternion in GLSL
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Recently at SIGGRAPH 2009, Khronos and the ARB announced OpenGL 3.2 and GLSL 1.50. We have continued to increment 3D graphics capability on a 6 month schedule. OpenGL 3.2 adds a few larger pieces of functionality along with many smaller tweaks, while still being compatible with most modern installed GPUs. If you have a 1 or 2 year old GPU, chances are a driver update will bring you OpenGL 3.2.