So previously I've worked with directx in c#. I then moved on to Opentk (OpenGL toolkit for c#). Now I'm trying to modify the gcc4 engine to work with OpenGL rather than directx. The problem I'm finding is that OpenGL unlike Opentk only contains the d3d part of direct x. Basically, I'm on the hunt for libraries to fill in the gaps.

I found some libraries, such as glfw and glm. Unfortunately glm (afaik) is lacking many functions that I would have considered neccessities, such as a matrix.setposition or vec3.length

So essentially, I'm here to ask if anyone has some pointers to speed up the process of replacing directx.

Please note, I am trying to keep everything multiplatform.

Thanks great book btw mr mike and Rez

At first I didn't realise glfw covered input as it does, so that's fine.

Math wise however, I'm curious as to what library you use.