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I queried my opengl version using glGetString(GL_VERSION) and it returned 3.3.0. As far as I know, 3.3 does have the GL_TEXTURE_RECTANGLE flag. However I’m unable to find it in my gl.h header nor does my compiler(VC++) recognize the flag. All my other openGL calls seem to run fine. Any ideas?
Unfortunately, Visual Studio does not ship with up-to-date OpenGL support. Check out GLEW for a solution to this problem.