How is this 3D rendering on the desktop done

Question

I read a topic on OpenGL.org where a guy made this: http://coreytabaka.com/programming/cube-demo/

He said to release the source code but he never did, does anyone how I could get the same idea?

Has to do with clearing the window with alpha but drawing on it as well.. just don't get how to get OpenGL setup like that. From there I can do my stuff but I'd like a base for this running in C++ with VisualStudio,

Anybody has something like this laying around ? Or can show pieces of the code to get this kind of rendering done.

Answer 1

1. Render the 3d scene to a pbuffer.
2. Use a color key to blend the pbuffer to screen.