c++ - Multiple buffering in OpenGL on Windows

1. What is the most common way modern games perform triple buffering ?


2. What does the SwapBuffers exactly do in terms of OpenGL states ?


3. Is it possible to perform double and triple buffering independently of window system (for example, by manipulating with glDrawBuffer or by using FBO/PBO) ? If so, any hints ?


4. Does 3. even make sense in terms of performance and flexibility ?

Answer

This quote answers most of your questions:

You cannot control whether a driver does triple buffering. You could try to implement it yourself using a FBO. But if the driver is already doing triple buffering, your code will only turn it into quadruple buffering. Which is usually overkill.

http://www.opengl.org/wiki/Common_Mistakes#Triple_Buffering

What does the SwapBuffers exactly do in terms of OpenGL states ?

From what I understand, it doesn't really do anything other than flushing GL and swapping the buffers.