choosing opengl version

Core Library Questions

vlevenf

in Core Library Questions • 11 months ago

Hi, was wondering how to explicitly state which version of OpenGL I want to create a context for. I have 2 graphics cards on my machine, one is 3.2 compatible, the other is 3.3 but doesn't run my main monitors... so when I start OpenGL in processing it seems it wants to create a 3.3 context (guessing it is just picking the highest version my machine *apparently* supports) and of course leads to some "couldn't get context" error when I run the sketch. I was hoping there is some straightforward way to force a 3.2 context. Help?

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PhiLho

Re: choosing opengl version

11 months ago

If you were on Windows, I would say that perhaps you need a distinct graphics driver for each graphics card. Which might not be possible, eg. if the cards are of the same family. Perhaps some search can lead you to some hints in this direction.

vlevenf

Re: choosing opengl version

11 months ago

Thanks for your reply. I am on Windows 7 64bit. They are both AMD cards (I had tried to use AMD and Nvidia and they refused to play nicely together). I've tried to run them by distinct drivers in the past but wasn't successful. I've found a workaround - I read Processing 1.5 only supports OpenGL up to some earlier version, so I tried it and it works fine. Its good enough for my purposes anyway.

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