Can anyone tell me how to start learning OpenGL? I have small knowledge of C++. Can I write OpenGL programs in C++? If yes, what are the required things to do? Please tell the steps to follow, as if you are saying to a kid. I'm very new to this concept :(
I'd start with Nehe's tutorials. They cover the basics and are all in C++.
If you want something slightly more high level you could look at the Ogre Rendering engine
To learn more about OpenGL itself, have a look at the OpenGL redbook.
And GLUT provides some useful methods to make the usage of OpenGL easier.
I also suggest the OpenGL redbook: link, it's the main reference document.
About the language OpenGL works with every language, the only thing that differs is how you create an OpenGL context and put it fullscreen or in a window.. for this I would suggest an API capable of wrapping these functionalities (and also other ones, like mouse handling)..
They are not mandatory to program in opengl but they help a lot..
Have a look at the official OpenGL website. It provides a wiki including a getting started section, and a link list to third party material.
In any case you should think about which OpenGL version you want to target. If you start with the famous NeHe tutorials, you will most probably end up with OpenGL 2.1 and its fixed function pipeline or hard-wired shader variables, display lists and similar concepts that are not available in the OpenGL 3.2 core profile. On the other hand, no OpenGL 3.2 tutorials have gained this level of reputation, so I can't recommend a specific tutorial.
I'd recommend using QtOpenGL http://qt.nokia.com/doc/4.5/qtopengl.html or SDL http://www.libsdl.org/.
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For the love God, please make it portable, it's pointless to code using OpenGL yet make a program that only runs on windows.
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Just start from 2D then shift to 3d. its very easy. In openGL i think we have to remember somany functions especially, GLUT commands.