C++ 3D

I am using C++, and moving on to doing 3D things with it. I've some good experience with Java3D's API.

My question: OpenGL / DirectX / ???someothersuggesteions???

Leaning more so to OpenGL. I've heard a bit about Ogre3D too.

>>9
Sounds awesome o__o Watching a video on OpenCL now.

I used to write programs to do fractal computations, I can only imagine how it would run under openCL:
http://www.youtube.com/watch?v=IEWGTpsFtt8

.18 seconds, that's crazy. Though these guys are running much better hardware than I have, regardless, total codepr0n.

Now with this OpenCL business, it seems to deal mostly with C. Honestly I've never looked too deep into C code, and I may or may not remember a teacher/mentor of mine mentioning that the main difference was that C++ is object-orientated (and from playing with Java, I quite like objects). I'll correct myself if I'm wrong, but that's beside my point: Is it worth hopping over to C?