Does OpenGL contain software rendering libraries which will get automatically invoked in absence of hardware accelerator? What is the extent of functionalities which can be simulated in software this...

Thanks for guidance.

The third option seems more appropriate. I want to take advantage of the underlying hardware to the best possible extent. But it does not appear to be as simple as 'if ......

My product is targeted for multiple platforms - desktop as well as hand held devices. I am targeting Intel I7, Atom, OMAP3730 processors. The graphic support for them vary. Intel I7 ones will support...

thanks for the reply. I will evaluate the approach of having multiple paths based on opengl version but I would certainly be more interested in solution / feasibility for ' write once and read on any...

How can a program developed a version of OpenGL be made to work with lower versions as well?
For e.g. can program developed using open gl 3.0 also run on machine with driver for 2.0