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Difference in OpenGL and DirectX?

post #1 of 2
Thread Starter 
I know DirectX is a Microsoft thing but in terms of gaming and appearance and all that fun stuff what exactly is the difference?

Isn't OpenGL open-source?

Gonna go check out wikipedia while I wait for responses
    
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post #2 of 2
DirectX is a closed source direct 3D rendering API for windows.

OpenGL is an open source direct 3D rendering API for all OSes.
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