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Suppose that I want to stick to OpenGL 3.3 support, should I use function names with EXT suffix? Example: TextureParameteriEXT( ) vs TextureParameteri( ) The main difference is EXT suffix in function names. So I would like to know how can I test 3.3 compatibility without having to purchase 3.3 class graphic card? To put it simple, my dev hardware is too powerful compare to what I plan to support, and thus not sure how to test my code.ĮDIT: On a related note, there is EXT_direct_state_access extension, and DSA is in the OpenGL 4.5 core profile. The problem here is that both of my dev machines have hardware support for 4.5, which means that everything works, including those features that requires OpenGL 4.x. It says that "OpengGL 3.1 is required", however there is according to this document which seems to also state that the extension is not available in 3.3. However I would like to use certain extesntions, and want to make sure they all require OpenGL version 3.3 or lower before I use them. I'm having concern about my code which was developed with OpenGL 3.3 hardware level support in mind.
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