Crossfading scenes in OpenGL

Question

I would like to render two scenes in OpenGL, and then do a visual crossfade from one scene to the second. Can anyone suggest a starting point for learning how to do this?

Answer 1

The most pmajor thing you need to learn is how to do render-to-texture.

When you have both scenes in 2 textures it really is simple to crossfade between them. In fact its pretty simple to do all manor of interesting fade effects :)