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OpenGL is a graphics standard and API which targets the desktop and workstation markets. It is designed to be easy to accelerate with dedicated computer hardware, and hence most implementations give greatly improved performance over traditional software rendering. Currently, OpenGL is used for applications like CAD software and computer games. It is also cross-platform. The OpenGL standard is controlled by the Khronos group, which also controls OpenGL ES.

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What version of OpenGL should I code for, given compatibility and performance considerations?

OpenGL 3, which introduced FBOs, VAOs and other things, was released in July 11, 2008, almost 5 years ago. … As OpenGL 3 required a similar graphics card, it is generally safe to assume most DirectX 10 cards can run at least OpenGL 3. …
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