OpenGL Version is not getting printed

Question

I need to know if my OpenGL version can handle shaders. But when I try to print the version of OpenGL, it doedn't print anything.

cout<<glGetString(GL_VERSION)<<endl;

What is wrong here?

You need to have a valid OpenGL context at the time of calling glGetString(); See also: http://www.opengl.org/discussion_boards/showthread.php/149571-glGetString(GL_VERSION)-return-Null-argh-! — Vertexwahn, Oct 10 '13 at 11:27
I don't know about OpenGL context. I'm using Arch Linux. Can you give me any resource to know what that is? — Praneeth Peiris, Oct 10 '13 at 11:51
I would advice you to read about OpenGL, before you start trying to make a program using OpenGL. — vallentin, Oct 10 '13 at 12:57
Okay found it. The output is `2.1 Mesa 9.2.1` . Does this version support GLSL proogramming? — Praneeth Peiris, Oct 10 '13 at 13:16
http://stackoverflow.com/questions/12184506/why-does-glgetstringgl-version-return-null-zero — Ciro Santilli OurBigBook.com, Nov 02 '15 at 15:57

score 4 · Accepted Answer · answered Oct 10 '13 at 13:16

4

Start from here: http://open.gl/context (learn about context creation, getting a basic, modern OGL program running)

Use a debugger.

answered Oct 10 '13 at 13:16

Preet Kukreti

1 Answers1