In short: OpenGL is faster than DirectX. As for why OpenGL is faster than DirectX/Direct3D, the simple answer is that OpenGL seems to have a smoother, more efficient pipeline.

The graphics library, an alternative to Microsoft's DirectX, gets new features designed to add razzle-dazzle to PC games.

OpenGL galvanizes game graphics The graphics library, an alternative to Microsoft's DirectX, gets new features designed to add razzle-dazzle to PC games.

Valve will be speaking about its Linux/OpenGL advancements at SIGGRAPH 2012 next week. SIGGRAPH is where we usually hear about the latest OpenGL and DirectX news, too -- so stay tuned!

NVIDIA Developer Toolkitには、以下が含まれます。 * SDK 10：最新GPUに対応した、DirectX 10、OpenGL、CUDAによる全く新しいコードサンプルです。

The broad industry support Apple is building around OpenCL will help increase the critical mass behind OpenGL, the 2D and 3D graphics language Apple uses extensively in Mac OS X.

2010年からOpenGLがロケットの如く加速し，DirectXを引き離しているということを冗談めかして示したOpenGLのロードマップ ...

OpenGL and DirectX most likely will be following AMD Mantle API's footsteps by providing low-level access for video cards.

Over at this years GDC some slides where shown demonstrating that DirectX and OpenGL will start offering low-level access in order to reduce draw overhead.

Hey!Lemme first say that I did a search and couldn't find anything on this, so be kind :-)Which video mode should I use Software, OpenGL, or DirectX? A little background...I've been fighting the ...

id Software co-founder John Carmack built his popular game engines around the cross-platform OpenGL API. It therefore may be a surprise to learn that he considers Microsoft's ...

First person shooter godfather John Carmack has revealed that he now prefers DirectX to OpenGL, saying that 'inertia' is the main reason why id Software has stuck by the cross-platform 3D graphics ...