From Direct3d to OpenGL

Question

I currently rewrite an old Visual Basic application in java, a large part of the work involves replacing Direct3d with jogl.
Since I have no experience in dealing with Direct3d and only minimal experience using Opengl, I am stuck on finding appropriate replacements for the api calls.

Are there any good guides/tutorials or references?

Edit:
Additional information:

• Direct3D version 8

Answer 1

I'd also recommend going through the OpenGL Red Book and investing some time in typing in some samples and playing with them. OpenGL Red Book deals with using GL in C, so I recommend you go through it in C or C++ before going to JOGL.

You don't have to play with everything, but making a few examples work in C++ would be great before you go on.

Otherwise, if you don't have the time or interest or will to study GL, just follow NeHe tutorials as mentioned in other answer, but take a peek every now and then into the Red Book for additional explanations.

Answer 2

The NeHe tutorials are a pretty good intro. They start here. Having Direct3D experience, you'll probably buzz through some of them pretty quickly.

Answer 3

I suppose you could try and browse through the code of this D3D -> OpenGL wrapper library: http://sourceforge.net/projects/dxglwrap (using it as a reference I mean)

You can browse through it here: http://dxglwrap.cvs.sourceforge.net/dxglwrap/