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Muftobration

OpenGL OpenGL 3 on a 2.1 device

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I have searched, but nobody seems to be asking this question, nor have I found an answer. Is it possible to run a program containing OpenGL 3 code on a machine that only supports up to 2.1? I would be most interested in some sort of software that wraps around the program and simulates any calls that the hardware cannot handle.

I'm doing some OpenGL 3 development on my X201 and the intel graphics cannot correctly run many of the examples in the OpenGL SuperBible, 5th edition (see attached screen shot, which is supposed to depict a sphere). These examples work correctly on my GTX 460. If it were possible to get a small expresscard slot graphics adapter that provided support for OpenGL 3, that would be excellent, but I don't think such a device exists (besides the ViDock, which is not practical on the go).

OpenGL21failure.png

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If your driver doesn;t support it then you can't do it. The software option is not really an option - the only real software implementation is Mesa3D, that only goes up to OpenGL 2.1, and in any event if any parts of the fragment pipeline get software emulated you typically end up with less that 1 frame per second.

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