OpenGL or Direct3D for a new Windows game project? Or something else?

Question

I\'m starting a hobby game project on Windows that will make heavy use of 3D graphics effects. It will most likely be written in C++.

Should I use OpenGL or Direct3D for

Answer 1

I really agree with those telling you to learn Ogre3D. You said you'd use C++, so Ogre3D is a great choice. XNA uses C# and you'd have to learn the differences between it and C++, apart from learning the very XNA. Also XNA is neither Open Source nor cross platform, so if you wanna have a wider knowledge about game development, I'd suggest first learning SDL, and then Ogre3D.